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benjchristensen/d3.v2.patched.js

Created June 5, 2012 16:54
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Issue 655 Example (Patch)
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readme.mkd
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d3.v2.patched.js
// patched version of d3.v2.js
// bug report that this patches is at https://github.com/mbostock/d3/issues/655
(function(){if (!Date.now) Date.now = function() {
return +new Date;
};
try {
document.createElement("div").style.setProperty("opacity", 0, "");
} catch (error) {
var d3_style_prototype = CSSStyleDeclaration.prototype,
d3_style_setProperty = d3_style_prototype.setProperty;
d3_style_prototype.setProperty = function(name, value, priority) {
d3_style_setProperty.call(this, name, value + "", priority);
};
}
d3 = {version: "2.9.1"}; // semver
function d3_class(ctor, properties) {
try {
for (var key in properties) {
Object.defineProperty(ctor.prototype, key, {
value: properties[key],
enumerable: false
});
}
} catch (e) {
ctor.prototype = properties;
}
}
var d3_array = d3_arraySlice; // conversion for NodeLists
function d3_arrayCopy(pseudoarray) {
var i = -1, n = pseudoarray.length, array = [];
while (++i < n) array.push(pseudoarray[i]);
return array;
}
function d3_arraySlice(pseudoarray) {
return Array.prototype.slice.call(pseudoarray);
}
try {
d3_array(document.documentElement.childNodes)[0].nodeType;
} catch(e) {
d3_array = d3_arrayCopy;
}
var d3_arraySubclass = [].__proto__?
// Until ECMAScript supports array subclassing, prototype injection works well.
function(array, prototype) {
array.__proto__ = prototype;
}:
// And if your browser doesn't support __proto__, we'll use direct extension.
function(array, prototype) {
for (var property in prototype) array[property] = prototype[property];
};
d3.map = function(object) {
var map = new d3_Map;
for (var key in object) map.set(key, object[key]);
return map;
};
function d3_Map() {}
d3_class(d3_Map, {
has: function(key) {
return d3_map_prefix + key in this;
},
get: function(key) {
return this[d3_map_prefix + key];
},
set: function(key, value) {
return this[d3_map_prefix + key] = value;
},
remove: function(key) {
key = d3_map_prefix + key;
return key in this && delete this[key];
},
keys: function() {
var keys = [];
this.forEach(function(key) { keys.push(key); });
return keys;
},
values: function() {
var values = [];
this.forEach(function(key, value) { values.push(value); });
return values;
},
entries: function() {
var entries = [];
this.forEach(function(key, value) { entries.push({key: key, value: value}); });
return entries;
},
forEach: function(f) {
for (var key in this) {
if (key.charCodeAt(0) === d3_map_prefixCode) {
f.call(this, key.substring(1), this[key]);
}
}
}
});
var d3_map_prefix = "\0", // prevent collision with built-ins
d3_map_prefixCode = d3_map_prefix.charCodeAt(0);
function d3_identity(d) {
return d;
}
function d3_this() {
return this;
}
function d3_true() {
return true;
}
function d3_functor(v) {
return typeof v === "function" ? v : function() { return v; };
}
d3.functor = d3_functor;
// Copies a variable number of methods from source to target.
d3.rebind = function(target, source) {
var i = 1, n = arguments.length, method;
while (++i < n) target[method = arguments[i]] = d3_rebind(target, source, source[method]);
return target;
};
// Method is assumed to be a standard D3 getter-setter:
// If passed with no arguments, gets the value.
// If passed with arguments, sets the value and returns the target.
function d3_rebind(target, source, method) {
return function() {
var value = method.apply(source, arguments);
return arguments.length ? target : value;
};
}
d3.ascending = function(a, b) {
return a < b ? -1 : a > b ? 1 : a >= b ? 0 : NaN;
};
d3.descending = function(a, b) {
return b < a ? -1 : b > a ? 1 : b >= a ? 0 : NaN;
};
d3.mean = function(array, f) {
var n = array.length,
a,
m = 0,
i = -1,
j = 0;
if (arguments.length === 1) {
while (++i < n) if (d3_number(a = array[i])) m += (a - m) / ++j;
} else {
while (++i < n) if (d3_number(a = f.call(array, array[i], i))) m += (a - m) / ++j;
}
return j ? m : undefined;
};
d3.median = function(array, f) {
if (arguments.length > 1) array = array.map(f);
array = array.filter(d3_number);
return array.length ? d3.quantile(array.sort(d3.ascending), .5) : undefined;
};
d3.min = function(array, f) {
var i = -1,
n = array.length,
a,
b;
if (arguments.length === 1) {
while (++i < n && ((a = array[i]) == null || a != a)) a = undefined;
while (++i < n) if ((b = array[i]) != null && a > b) a = b;
} else {
while (++i < n && ((a = f.call(array, array[i], i)) == null || a != a)) a = undefined;
while (++i < n) if ((b = f.call(array, array[i], i)) != null && a > b) a = b;
}
return a;
};
d3.max = function(array, f) {
var i = -1,
n = array.length,
a,
b;
if (arguments.length === 1) {
while (++i < n && ((a = array[i]) == null || a != a)) a = undefined;
while (++i < n) if ((b = array[i]) != null && b > a) a = b;
} else {
while (++i < n && ((a = f.call(array, array[i], i)) == null || a != a)) a = undefined;
while (++i < n) if ((b = f.call(array, array[i], i)) != null && b > a) a = b;
}
return a;
};
d3.extent = function(array, f) {
var i = -1,
n = array.length,
a,
b,
c;
if (arguments.length === 1) {
while (++i < n && ((a = c = array[i]) == null || a != a)) a = c = undefined;
while (++i < n) if ((b = array[i]) != null) {
if (a > b) a = b;
if (c < b) c = b;
}
} else {
while (++i < n && ((a = c = f.call(array, array[i], i)) == null || a != a)) a = undefined;
while (++i < n) if ((b = f.call(array, array[i], i)) != null) {
if (a > b) a = b;
if (c < b) c = b;
}
}
return [a, c];
};
d3.random = {
normal: function(mean, deviation) {
if (arguments.length < 2) deviation = 1;
if (arguments.length < 1) mean = 0;
return function() {
var x, y, r;
do {
x = Math.random() * 2 - 1;
y = Math.random() * 2 - 1;
r = x * x + y * y;
} while (!r || r > 1);
return mean + deviation * x * Math.sqrt(-2 * Math.log(r) / r);
};
}
};
function d3_number(x) {
return x != null && !isNaN(x);
}
d3.sum = function(array, f) {
var s = 0,
n = array.length,
a,
i = -1;
if (arguments.length === 1) {
while (++i < n) if (!isNaN(a = +array[i])) s += a;
} else {
while (++i < n) if (!isNaN(a = +f.call(array, array[i], i))) s += a;
}
return s;
};
// R-7 per <http://en.wikipedia.org/wiki/Quantile>
d3.quantile = function(values, p) {
var H = (values.length - 1) * p + 1,
h = Math.floor(H),
v = values[h - 1],
e = H - h;
return e ? v + e * (values[h] - v) : v;
};
d3.transpose = function(matrix) {
return d3.zip.apply(d3, matrix);
};
d3.zip = function() {
if (!(n = arguments.length)) return [];
for (var i = -1, m = d3.min(arguments, d3_zipLength), zips = new Array(m); ++i < m;) {
for (var j = -1, n, zip = zips[i] = new Array(n); ++j < n;) {
zip[j] = arguments[j][i];
}
}
return zips;
};
function d3_zipLength(d) {
return d.length;
}
d3.bisector = function(f) {
return {
left: function(a, x, lo, hi) {
if (arguments.length < 3) lo = 0;
if (arguments.length < 4) hi = a.length;
while (lo < hi) {
var mid = lo + hi >> 1;
if (f.call(a, a[mid], mid) < x) lo = mid + 1;
else hi = mid;
}
return lo;
},
right: function(a, x, lo, hi) {
if (arguments.length < 3) lo = 0;
if (arguments.length < 4) hi = a.length;
while (lo < hi) {
var mid = lo + hi >> 1;
if (x < f.call(a, a[mid], mid)) hi = mid;
else lo = mid + 1;
}
return lo;
}
};
};
var d3_bisector = d3.bisector(function(d) { return d; });
d3.bisectLeft = d3_bisector.left;
d3.bisect = d3.bisectRight = d3_bisector.right;
d3.first = function(array, f) {
var i = 0,
n = array.length,
a = array[0],
b;
if (arguments.length === 1) f = d3.ascending;
while (++i < n) {
if (f.call(array, a, b = array[i]) > 0) {
a = b;
}
}
return a;
};
d3.last = function(array, f) {
var i = 0,
n = array.length,
a = array[0],
b;
if (arguments.length === 1) f = d3.ascending;
while (++i < n) {
if (f.call(array, a, b = array[i]) <= 0) {
a = b;
}
}
return a;
};
d3.nest = function() {
var nest = {},
keys = [],
sortKeys = [],
sortValues,
rollup;
function map(array, depth) {
if (depth >= keys.length) return rollup
? rollup.call(nest, array) : (sortValues
? array.sort(sortValues)
: array);
var i = -1,
n = array.length,
key = keys[depth++],
keyValue,
object,
valuesByKey = new d3_Map,
values,
o = {};
while (++i < n) {
if (values = valuesByKey.get(keyValue = key(object = array[i]))) {
values.push(object);
} else {
valuesByKey.set(keyValue, [object]);
}
}
valuesByKey.forEach(function(keyValue) {
o[keyValue] = map(valuesByKey.get(keyValue), depth);
});
return o;
}
function entries(map, depth) {
if (depth >= keys.length) return map;
var a = [],
sortKey = sortKeys[depth++],
key;
for (key in map) {
a.push({key: key, values: entries(map[key], depth)});
}
if (sortKey) a.sort(function(a, b) {
return sortKey(a.key, b.key);
});
return a;
}
nest.map = function(array) {
return map(array, 0);
};
nest.entries = function(array) {
return entries(map(array, 0), 0);
};
nest.key = function(d) {
keys.push(d);
return nest;
};
// Specifies the order for the most-recently specified key.
// Note: only applies to entries. Map keys are unordered!
nest.sortKeys = function(order) {
sortKeys[keys.length - 1] = order;
return nest;
};
// Specifies the order for leaf values.
// Applies to both maps and entries array.
nest.sortValues = function(order) {
sortValues = order;
return nest;
};
nest.rollup = function(f) {
rollup = f;
return nest;
};
return nest;
};
d3.keys = function(map) {
var keys = [];
for (var key in map) keys.push(key);
return keys;
};
d3.values = function(map) {
var values = [];
for (var key in map) values.push(map[key]);
return values;
};
d3.entries = function(map) {
var entries = [];
for (var key in map) entries.push({key: key, value: map[key]});
return entries;
};
d3.permute = function(array, indexes) {
var permutes = [],
i = -1,
n = indexes.length;
while (++i < n) permutes[i] = array[indexes[i]];
return permutes;
};
d3.merge = function(arrays) {
return Array.prototype.concat.apply([], arrays);
};
d3.split = function(array, f) {
var arrays = [],
values = [],
value,
i = -1,
n = array.length;
if (arguments.length < 2) f = d3_splitter;
while (++i < n) {
if (f.call(values, value = array[i], i)) {
values = [];
} else {
if (!values.length) arrays.push(values);
values.push(value);
}
}
return arrays;
};
function d3_splitter(d) {
return d == null;
}
function d3_collapse(s) {
return s.replace(/(^\s+)|(\s+$)/g, "").replace(/\s+/g, " ");
}
d3.range = function(start, stop, step) {
if (arguments.length < 3) {
step = 1;
if (arguments.length < 2) {
stop = start;
start = 0;
}
}
if ((stop - start) / step === Infinity) throw new Error("infinite range");
var range = [],
k = d3_range_integerScale(Math.abs(step)),
i = -1,
j;
start *= k, stop *= k, step *= k;
if (step < 0) while ((j = start + step * ++i) > stop) range.push(j / k);
else while ((j = start + step * ++i) < stop) range.push(j / k);
return range;
};
function d3_range_integerScale(x) {
var k = 1;
while (x * k % 1) k *= 10;
return k;
}
d3.requote = function(s) {
return s.replace(d3_requote_re, "\\$&");
};
var d3_requote_re = /[\\\^\$\*\+\?\|\[\]\(\)\.\{\}]/g;
d3.round = function(x, n) {
return n
? Math.round(x * (n = Math.pow(10, n))) / n
: Math.round(x);
};
d3.xhr = function(url, mime, callback) {
var req = new XMLHttpRequest;
if (arguments.length < 3) callback = mime, mime = null;
else if (mime && req.overrideMimeType) req.overrideMimeType(mime);
req.open("GET", url, true);
if (mime) req.setRequestHeader("Accept", mime);
req.onreadystatechange = function() {
if (req.readyState === 4) {
var s = req.status;
callback(s >= 200 && s < 300 || s === 304 ? req : null);
}
};
req.send(null);
};
d3.text = function(url, mime, callback) {
function ready(req) {
callback(req && req.responseText);
}
if (arguments.length < 3) {
callback = mime;
mime = null;
}
d3.xhr(url, mime, ready);
};
d3.json = function(url, callback) {
d3.text(url, "application/json", function(text) {
callback(text ? JSON.parse(text) : null);
});
};
d3.html = function(url, callback) {
d3.text(url, "text/html", function(text) {
if (text != null) { // Treat empty string as valid HTML.
var range = document.createRange();
range.selectNode(document.body);
text = range.createContextualFragment(text);
}
callback(text);
});
};
d3.xml = function(url, mime, callback) {
function ready(req) {
callback(req && req.responseXML);
}
if (arguments.length < 3) {
callback = mime;
mime = null;
}
d3.xhr(url, mime, ready);
};
var d3_nsPrefix = {
svg: "http://www.w3.org/2000/svg",
xhtml: "http://www.w3.org/1999/xhtml",
xlink: "http://www.w3.org/1999/xlink",
xml: "http://www.w3.org/XML/1998/namespace",
xmlns: "http://www.w3.org/2000/xmlns/"
};
d3.ns = {
prefix: d3_nsPrefix,
qualify: function(name) {
var i = name.indexOf(":"),
prefix = name;
if (i >= 0) {
prefix = name.substring(0, i);
name = name.substring(i + 1);
}
return d3_nsPrefix.hasOwnProperty(prefix)
? {space: d3_nsPrefix[prefix], local: name}
: name;
}
};
d3.dispatch = function() {
var dispatch = new d3_dispatch,
i = -1,
n = arguments.length;
while (++i < n) dispatch[arguments[i]] = d3_dispatch_event(dispatch);
return dispatch;
};
function d3_dispatch() {}
d3_dispatch.prototype.on = function(type, listener) {
var i = type.indexOf("."),
name = "";
// Extract optional namespace, e.g., "click.foo"
if (i > 0) {
name = type.substring(i + 1);
type = type.substring(0, i);
}
return arguments.length < 2
? this[type].on(name)
: this[type].on(name, listener);
};
function d3_dispatch_event(dispatch) {
var listeners = [],
listenerByName = new d3_Map;
function event() {
var z = listeners, // defensive reference
i = -1,
n = z.length,
l;
while (++i < n) if (l = z[i].on) l.apply(this, arguments);
return dispatch;
}
event.on = function(name, listener) {
var l = listenerByName.get(name),
i;
// return the current listener, if any
if (arguments.length < 2) return l && l.on;
// remove the old listener, if any (with copy-on-write)
if (l) {
l.on = null;
listeners = listeners.slice(0, i = listeners.indexOf(l)).concat(listeners.slice(i + 1));
listenerByName.remove(name);
}
// add the new listener, if any
if (listener) listeners.push(listenerByName.set(name, {on: listener}));
return dispatch;
};
return event;
}
// TODO align
d3.format = function(specifier) {
var match = d3_format_re.exec(specifier),
fill = match[1] || " ",
sign = match[3] || "",
zfill = match[5],
width = +match[6],
comma = match[7],
precision = match[8],
type = match[9],
scale = 1,
suffix = "",
integer = false;
if (precision) precision = +precision.substring(1);
if (zfill) {
fill = "0"; // TODO align = "=";
if (comma) width -= Math.floor((width - 1) / 4);
}
switch (type) {
case "n": comma = true; type = "g"; break;
case "%": scale = 100; suffix = "%"; type = "f"; break;
case "p": scale = 100; suffix = "%"; type = "r"; break;
case "d": integer = true; precision = 0; break;
case "s": scale = -1; type = "r"; break;
}
// If no precision is specified for r, fallback to general notation.
if (type == "r" && !precision) type = "g";
type = d3_format_types.get(type) || d3_format_typeDefault;
return function(value) {
// Return the empty string for floats formatted as ints.
if (integer && (value % 1)) return "";
// Convert negative to positive, and record the sign prefix.
var negative = (value < 0) && (value = -value) ? "\u2212" : sign;
// Apply the scale, computing it from the value's exponent for si format.
if (scale < 0) {
var prefix = d3.formatPrefix(value, precision);
value *= prefix.scale;
suffix = prefix.symbol;
} else {
value *= scale;
}
// Convert to the desired precision.
value = type(value, precision);
// If the fill character is 0, the sign and group is applied after the fill.
if (zfill) {
var length = value.length + negative.length;
if (length < width) value = new Array(width - length + 1).join(fill) + value;
if (comma) value = d3_format_group(value);
value = negative + value;
}
// Otherwise (e.g., space-filling), the sign and group is applied before.
else {
if (comma) value = d3_format_group(value);
value = negative + value;
var length = value.length;
if (length < width) value = new Array(width - length + 1).join(fill) + value;
}
return value + suffix;
};
};
// [[fill]align][sign][#][0][width][,][.precision][type]
var d3_format_re = /(?:([^{])?([<>=^]))?([+\- ])?(#)?(0)?([0-9]+)?(,)?(\.[0-9]+)?([a-zA-Z%])?/;
var d3_format_types = d3.map({
g: function(x, p) { return x.toPrecision(p); },
e: function(x, p) { return x.toExponential(p); },
f: function(x, p) { return x.toFixed(p); },
r: function(x, p) { return d3.round(x, p = d3_format_precision(x, p)).toFixed(Math.max(0, Math.min(20, p))); }
});
function d3_format_precision(x, p) {
return p - (x ? 1 + Math.floor(Math.log(x + Math.pow(10, 1 + Math.floor(Math.log(x) / Math.LN10) - p)) / Math.LN10) : 1);
}
function d3_format_typeDefault(x) {
return x + "";
}
// Apply comma grouping for thousands.
function d3_format_group(value) {
var i = value.lastIndexOf("."),
f = i >= 0 ? value.substring(i) : (i = value.length, ""),
t = [];
while (i > 0) t.push(value.substring(i -= 3, i + 3));
return t.reverse().join(",") + f;
}
var d3_formatPrefixes = ["y","z","a","f","p","n","μ","m","","k","M","G","T","P","E","Z","Y"].map(d3_formatPrefix);
d3.formatPrefix = function(value, precision) {
var i = 0;
if (value) {
if (value < 0) value *= -1;
if (precision) value = d3.round(value, d3_format_precision(value, precision));
i = 1 + Math.floor(1e-12 + Math.log(value) / Math.LN10);
i = Math.max(-24, Math.min(24, Math.floor((i <= 0 ? i + 1 : i - 1) / 3) * 3));
}
return d3_formatPrefixes[8 + i / 3];
};
function d3_formatPrefix(d, i) {
return {
scale: Math.pow(10, (8 - i) * 3),
symbol: d
};
}
/*
* TERMS OF USE - EASING EQUATIONS
*
* Open source under the BSD License.
*
* Copyright 2001 Robert Penner
* All rights reserved.
*
* Redistribution and use in source and binary forms, with or without
* modification, are permitted provided that the following conditions are met:
*
* - Redistributions of source code must retain the above copyright notice, this
* list of conditions and the following disclaimer.
*
* - Redistributions in binary form must reproduce the above copyright notice,
* this list of conditions and the following disclaimer in the documentation
* and/or other materials provided with the distribution.
*
* - Neither the name of the author nor the names of contributors may be used to
* endorse or promote products derived from this software without specific
* prior written permission.
*
* THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS"
* AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
* ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER OR CONTRIBUTORS BE
* LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
* CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
* SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
* INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
* CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
* ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
* POSSIBILITY OF SUCH DAMAGE.
*/
var d3_ease_quad = d3_ease_poly(2),
d3_ease_cubic = d3_ease_poly(3),
d3_ease_default = function() { return d3_ease_identity; };
var d3_ease = d3.map({
linear: d3_ease_default,
poly: d3_ease_poly,
quad: function() { return d3_ease_quad; },
cubic: function() { return d3_ease_cubic; },
sin: function() { return d3_ease_sin; },
exp: function() { return d3_ease_exp; },
circle: function() { return d3_ease_circle; },
elastic: d3_ease_elastic,
back: d3_ease_back,
bounce: function() { return d3_ease_bounce; }
});
var d3_ease_mode = d3.map({
"in": d3_ease_identity,
"out": d3_ease_reverse,
"in-out": d3_ease_reflect,
"out-in": function(f) { return d3_ease_reflect(d3_ease_reverse(f)); }
});
d3.ease = function(name) {
var i = name.indexOf("-"),
t = i >= 0 ? name.substring(0, i) : name,
m = i >= 0 ? name.substring(i + 1) : "in";
t = d3_ease.get(t) || d3_ease_default;
m = d3_ease_mode.get(m) || d3_ease_identity;
return d3_ease_clamp(m(t.apply(null, Array.prototype.slice.call(arguments, 1))));
};
function d3_ease_clamp(f) {
return function(t) {
return t <= 0 ? 0 : t >= 1 ? 1 : f(t);
};
}
function d3_ease_reverse(f) {
return function(t) {
return 1 - f(1 - t);
};
}
function d3_ease_reflect(f) {
return function(t) {
return .5 * (t < .5 ? f(2 * t) : (2 - f(2 - 2 * t)));
};
}
function d3_ease_identity(t) {
return t;
}
function d3_ease_poly(e) {
return function(t) {
return Math.pow(t, e);
};
}
function d3_ease_sin(t) {
return 1 - Math.cos(t * Math.PI / 2);
}
function d3_ease_exp(t) {
return Math.pow(2, 10 * (t - 1));
}
function d3_ease_circle(t) {
return 1 - Math.sqrt(1 - t * t);
}
function d3_ease_elastic(a, p) {
var s;
if (arguments.length < 2) p = 0.45;
if (arguments.length < 1) { a = 1; s = p / 4; }
else s = p / (2 * Math.PI) * Math.asin(1 / a);
return function(t) {
return 1 + a * Math.pow(2, 10 * -t) * Math.sin((t - s) * 2 * Math.PI / p);
};
}
function d3_ease_back(s) {
if (!s) s = 1.70158;
return function(t) {
return t * t * ((s + 1) * t - s);
};
}
function d3_ease_bounce(t) {
return t < 1 / 2.75 ? 7.5625 * t * t
: t < 2 / 2.75 ? 7.5625 * (t -= 1.5 / 2.75) * t + .75
: t < 2.5 / 2.75 ? 7.5625 * (t -= 2.25 / 2.75) * t + .9375
: 7.5625 * (t -= 2.625 / 2.75) * t + .984375;
}
d3.event = null;
function d3_eventCancel() {
d3.event.stopPropagation();
d3.event.preventDefault();
}
function d3_eventSource() {
var e = d3.event, s;
while (s = e.sourceEvent) e = s;
return e;
}
// Like d3.dispatch, but for custom events abstracting native UI events. These
// events have a target component (such as a brush), a target element (such as
// the svg:g element containing the brush) and the standard arguments `d` (the
// target element's data) and `i` (the selection index of the target element).
function d3_eventDispatch(target) {
var dispatch = new d3_dispatch,
i = 0,
n = arguments.length;
while (++i < n) dispatch[arguments[i]] = d3_dispatch_event(dispatch);
// Creates a dispatch context for the specified `thiz` (typically, the target
// DOM element that received the source event) and `argumentz` (typically, the
// data `d` and index `i` of the target element). The returned function can be
// used to dispatch an event to any registered listeners; the function takes a
// single argument as input, being the event to dispatch. The event must have
// a "type" attribute which corresponds to a type registered in the
// constructor. This context will automatically populate the "sourceEvent" and
// "target" attributes of the event, as well as setting the `d3.event` global
// for the duration of the notification.
dispatch.of = function(thiz, argumentz) {
return function(e1) {
try {
var e0 =
e1.sourceEvent = d3.event;
e1.target = target;
d3.event = e1;
dispatch[e1.type].apply(thiz, argumentz);
} finally {
d3.event = e0;
}
};
};
return dispatch;
}
d3.interpolate = function(a, b) {
var i = d3.interpolators.length, f;
while (--i >= 0 && !(f = d3.interpolators[i](a, b)));
return f;
};
d3.interpolateNumber = function(a, b) {
b -= a;
return function(t) { return a + b * t; };
};
d3.interpolateRound = function(a, b) {
b -= a;
return function(t) { return Math.round(a + b * t); };
};
d3.interpolateString = function(a, b) {
var m, // current match
i, // current index
j, // current index (for coallescing)
s0 = 0, // start index of current string prefix
s1 = 0, // end index of current string prefix
s = [], // string constants and placeholders
q = [], // number interpolators
n, // q.length
o;
// Reset our regular expression!
d3_interpolate_number.lastIndex = 0;
// Find all numbers in b.
for (i = 0; m = d3_interpolate_number.exec(b); ++i) {
if (m.index) s.push(b.substring(s0, s1 = m.index));
q.push({i: s.length, x: m[0]});
s.push(null);
s0 = d3_interpolate_number.lastIndex;
}
if (s0 < b.length) s.push(b.substring(s0));
// Find all numbers in a.
for (i = 0, n = q.length; (m = d3_interpolate_number.exec(a)) && i < n; ++i) {
o = q[i];
if (o.x == m[0]) { // The numbers match, so coallesce.
if (o.i) {
if (s[o.i + 1] == null) { // This match is followed by another number.
s[o.i - 1] += o.x;
s.splice(o.i, 1);
for (j = i + 1; j < n; ++j) q[j].i--;
} else { // This match is followed by a string, so coallesce twice.
s[o.i - 1] += o.x + s[o.i + 1];
s.splice(o.i, 2);
for (j = i + 1; j < n; ++j) q[j].i -= 2;
}
} else {
if (s[o.i + 1] == null) { // This match is followed by another number.
s[o.i] = o.x;
} else { // This match is followed by a string, so coallesce twice.
s[o.i] = o.x + s[o.i + 1];
s.splice(o.i + 1, 1);
for (j = i + 1; j < n; ++j) q[j].i--;
}
}
q.splice(i, 1);
n--;
i--;
} else {
o.x = d3.interpolateNumber(parseFloat(m[0]), parseFloat(o.x));
}
}
// Remove any numbers in b not found in a.
while (i < n) {
o = q.pop();
if (s[o.i + 1] == null) { // This match is followed by another number.
s[o.i] = o.x;
} else { // This match is followed by a string, so coallesce twice.
s[o.i] = o.x + s[o.i + 1];
s.splice(o.i + 1, 1);
}
n--;
}
// Special optimization for only a single match.
if (s.length === 1) {
return s[0] == null ? q[0].x : function() { return b; };
}
// Otherwise, interpolate each of the numbers and rejoin the string.
return function(t) {
for (i = 0; i < n; ++i) s[(o = q[i]).i] = o.x(t);
return s.join("");
};
};
d3.interpolateTransform = function(a, b) {
var s = [], // string constants and placeholders
q = [], // number interpolators
n,
A = d3.transform(a),
B = d3.transform(b),
ta = A.translate,
tb = B.translate,
ra = A.rotate,
rb = B.rotate,
wa = A.skew,
wb = B.skew,
ka = A.scale,
kb = B.scale;
if (ta[0] != tb[0] || ta[1] != tb[1]) {
s.push("translate(", null, ",", null, ")");
q.push({i: 1, x: d3.interpolateNumber(ta[0], tb[0])}, {i: 3, x: d3.interpolateNumber(ta[1], tb[1])});
} else if (tb[0] || tb[1]) {
s.push("translate(" + tb + ")");
} else {
s.push("");
}
if (ra != rb) {
q.push({i: s.push(s.pop() + "rotate(", null, ")") - 2, x: d3.interpolateNumber(ra, rb)});
} else if (rb) {
s.push(s.pop() + "rotate(" + rb + ")");
}
if (wa != wb) {
q.push({i: s.push(s.pop() + "skewX(", null, ")") - 2, x: d3.interpolateNumber(wa, wb)});
} else if (wb) {
s.push(s.pop() + "skewX(" + wb + ")");
}
if (ka[0] != kb[0] || ka[1] != kb[1]) {
n = s.push(s.pop() + "scale(", null, ",", null, ")");
q.push({i: n - 4, x: d3.interpolateNumber(ka[0], kb[0])}, {i: n - 2, x: d3.interpolateNumber(ka[1], kb[1])});
} else if (kb[0] != 1 || kb[1] != 1) {
s.push(s.pop() + "scale(" + kb + ")");
}
n = q.length;
return function(t) {
var i = -1, o;
while (++i < n) s[(o = q[i]).i] = o.x(t);
return s.join("");
};
};
d3.interpolateRgb = function(a, b) {
a = d3.rgb(a);
b = d3.rgb(b);
var ar = a.r,
ag = a.g,
ab = a.b,
br = b.r - ar,
bg = b.g - ag,
bb = b.b - ab;
return function(t) {
return "#"
+ d3_rgb_hex(Math.round(ar + br * t))
+ d3_rgb_hex(Math.round(ag + bg * t))
+ d3_rgb_hex(Math.round(ab + bb * t));
};
};
// interpolates HSL space, but outputs RGB string (for compatibility)
d3.interpolateHsl = function(a, b) {
a = d3.hsl(a);
b = d3.hsl(b);
var h0 = a.h,
s0 = a.s,
l0 = a.l,
h1 = b.h - h0,
s1 = b.s - s0,
l1 = b.l - l0;
return function(t) {
return d3_hsl_rgb(h0 + h1 * t, s0 + s1 * t, l0 + l1 * t).toString();
};
};
d3.interpolateArray = function(a, b) {
var x = [],
c = [],
na = a.length,
nb = b.length,
n0 = Math.min(a.length, b.length),
i;
for (i = 0; i < n0; ++i) x.push(d3.interpolate(a[i], b[i]));
for (; i < na; ++i) c[i] = a[i];
for (; i < nb; ++i) c[i] = b[i];
return function(t) {
for (i = 0; i < n0; ++i) c[i] = x[i](t);
return c;
};
};
d3.interpolateObject = function(a, b) {
var i = {},
c = {},
k;
for (k in a) {
if (k in b) {
i[k] = d3_interpolateByName(k)(a[k], b[k]);
} else {
c[k] = a[k];
}
}
for (k in b) {
if (!(k in a)) {
c[k] = b[k];
}
}
return function(t) {
for (k in i) c[k] = i[k](t);
return c;
};
}
var d3_interpolate_number = /[-+]?(?:\d+\.?\d*|\.?\d+)(?:[eE][-+]?\d+)?/g;
function d3_interpolateByName(n) {
return n == "transform"
? d3.interpolateTransform
: d3.interpolate;
}
d3.interpolators = [
d3.interpolateObject,
function(a, b) { return (b instanceof Array) && d3.interpolateArray(a, b); },
function(a, b) { return (typeof a === "string" || typeof b === "string") && d3.interpolateString(a + "", b + ""); },
function(a, b) { return (typeof b === "string" ? d3_rgb_names.has(b) || /^(#|rgb\(|hsl\()/.test(b) : b instanceof d3_Rgb || b instanceof d3_Hsl) && d3.interpolateRgb(a, b); },
function(a, b) { return !isNaN(a = +a) && !isNaN(b = +b) && d3.interpolateNumber(a, b); }
];
function d3_uninterpolateNumber(a, b) {
b = b - (a = +a) ? 1 / (b - a) : 0;
return function(x) { return (x - a) * b; };
}
function d3_uninterpolateClamp(a, b) {
b = b - (a = +a) ? 1 / (b - a) : 0;
return function(x) { return Math.max(0, Math.min(1, (x - a) * b)); };
}
d3.rgb = function(r, g, b) {
return arguments.length === 1
? (r instanceof d3_Rgb ? d3_rgb(r.r, r.g, r.b)
: d3_rgb_parse("" + r, d3_rgb, d3_hsl_rgb))
: d3_rgb(~~r, ~~g, ~~b);
};
function d3_rgb(r, g, b) {
return new d3_Rgb(r, g, b);
}
function d3_Rgb(r, g, b) {
this.r = r;
this.g = g;
this.b = b;
}
d3_Rgb.prototype.brighter = function(k) {
k = Math.pow(0.7, arguments.length ? k : 1);
var r = this.r,
g = this.g,
b = this.b,
i = 30;
if (!r && !g && !b) return d3_rgb(i, i, i);
if (r && r < i) r = i;
if (g && g < i) g = i;
if (b && b < i) b = i;
return d3_rgb(
Math.min(255, Math.floor(r / k)),
Math.min(255, Math.floor(g / k)),
Math.min(255, Math.floor(b / k)));
};
d3_Rgb.prototype.darker = function(k) {
k = Math.pow(0.7, arguments.length ? k : 1);
return d3_rgb(
Math.floor(k * this.r),
Math.floor(k * this.g),
Math.floor(k * this.b));
};
d3_Rgb.prototype.hsl = function() {
return d3_rgb_hsl(this.r, this.g, this.b);
};
d3_Rgb.prototype.toString = function() {
return "#" + d3_rgb_hex(this.r) + d3_rgb_hex(this.g) + d3_rgb_hex(this.b);
};
function d3_rgb_hex(v) {
return v < 0x10
? "0" + Math.max(0, v).toString(16)
: Math.min(255, v).toString(16);
}
function d3_rgb_parse(format, rgb, hsl) {
var r = 0, // red channel; int in [0, 255]
g = 0, // green channel; int in [0, 255]
b = 0, // blue channel; int in [0, 255]
m1, // CSS color specification match
m2, // CSS color specification type (e.g., rgb)
name;
/* Handle hsl, rgb. */
m1 = /([a-z]+)\((.*)\)/i.exec(format);
if (m1) {
m2 = m1[2].split(",");
switch (m1[1]) {
case "hsl": {
return hsl(
parseFloat(m2[0]), // degrees
parseFloat(m2[1]) / 100, // percentage
parseFloat(m2[2]) / 100 // percentage
);
}
case "rgb": {
return rgb(
d3_rgb_parseNumber(m2[0]),
d3_rgb_parseNumber(m2[1]),
d3_rgb_parseNumber(m2[2])
);
}
}
}
/* Named colors. */
if (name = d3_rgb_names.get(format)) return rgb(name.r, name.g, name.b);
/* Hexadecimal colors: #rgb and #rrggbb. */
if (format != null && format.charAt(0) === "#") {
if (format.length === 4) {
r = format.charAt(1); r += r;
g = format.charAt(2); g += g;
b = format.charAt(3); b += b;
} else if (format.length === 7) {
r = format.substring(1, 3);
g = format.substring(3, 5);
b = format.substring(5, 7);
}
r = parseInt(r, 16);
g = parseInt(g, 16);
b = parseInt(b, 16);
}
return rgb(r, g, b);
}
function d3_rgb_hsl(r, g, b) {
var min = Math.min(r /= 255, g /= 255, b /= 255),
max = Math.max(r, g, b),
d = max - min,
h,
s,
l = (max + min) / 2;
if (d) {
s = l < .5 ? d / (max + min) : d / (2 - max - min);
if (r == max) h = (g - b) / d + (g < b ? 6 : 0);
else if (g == max) h = (b - r) / d + 2;
else h = (r - g) / d + 4;
h *= 60;
} else {
s = h = 0;
}
return d3_hsl(h, s, l);
}
function d3_rgb_parseNumber(c) { // either integer or percentage
var f = parseFloat(c);
return c.charAt(c.length - 1) === "%" ? Math.round(f * 2.55) : f;
}
var d3_rgb_names = d3.map({
aliceblue: "#f0f8ff",
antiquewhite: "#faebd7",
aqua: "#00ffff",
aquamarine: "#7fffd4",
azure: "#f0ffff",
beige: "#f5f5dc",
bisque: "#ffe4c4",
black: "#000000",
blanchedalmond: "#ffebcd",
blue: "#0000ff",
blueviolet: "#8a2be2",
brown: "#a52a2a",
burlywood: "#deb887",
cadetblue: "#5f9ea0",
chartreuse: "#7fff00",
chocolate: "#d2691e",
coral: "#ff7f50",
cornflowerblue: "#6495ed",
cornsilk: "#fff8dc",
crimson: "#dc143c",
cyan: "#00ffff",
darkblue: "#00008b",
darkcyan: "#008b8b",
darkgoldenrod: "#b8860b",
darkgray: "#a9a9a9",
darkgreen: "#006400",
darkgrey: "#a9a9a9",
darkkhaki: "#bdb76b",
darkmagenta: "#8b008b",
darkolivegreen: "#556b2f",
darkorange: "#ff8c00",
darkorchid: "#9932cc",
darkred: "#8b0000",
darksalmon: "#e9967a",
darkseagreen: "#8fbc8f",
darkslateblue: "#483d8b",
darkslategray: "#2f4f4f",
darkslategrey: "#2f4f4f",
darkturquoise: "#00ced1",
darkviolet: "#9400d3",
deeppink: "#ff1493",
deepskyblue: "#00bfff",
dimgray: "#696969",
dimgrey: "#696969",
dodgerblue: "#1e90ff",
firebrick: "#b22222",
floralwhite: "#fffaf0",
forestgreen: "#228b22",
fuchsia: "#ff00ff",
gainsboro: "#dcdcdc",
ghostwhite: "#f8f8ff",
gold: "#ffd700",
goldenrod: "#daa520",
gray: "#808080",
green: "#008000",
greenyellow: "#adff2f",
grey: "#808080",
honeydew: "#f0fff0",
hotpink: "#ff69b4",
indianred: "#cd5c5c",
indigo: "#4b0082",
ivory: "#fffff0",
khaki: "#f0e68c",
lavender: "#e6e6fa",
lavenderblush: "#fff0f5",
lawngreen: "#7cfc00",
lemonchiffon: "#fffacd",
lightblue: "#add8e6",
lightcoral: "#f08080",
lightcyan: "#e0ffff",
lightgoldenrodyellow: "#fafad2",
lightgray: "#d3d3d3",
lightgreen: "#90ee90",
lightgrey: "#d3d3d3",
lightpink: "#ffb6c1",
lightsalmon: "#ffa07a",
lightseagreen: "#20b2aa",
lightskyblue: "#87cefa",
lightslategray: "#778899",
lightslategrey: "#778899",
lightsteelblue: "#b0c4de",
lightyellow: "#ffffe0",
lime: "#00ff00",
limegreen: "#32cd32",
linen: "#faf0e6",
magenta: "#ff00ff",
maroon: "#800000",
mediumaquamarine: "#66cdaa",
mediumblue: "#0000cd",
mediumorchid: "#ba55d3",
mediumpurple: "#9370db",
mediumseagreen: "#3cb371",
mediumslateblue: "#7b68ee",
mediumspringgreen: "#00fa9a",
mediumturquoise: "#48d1cc",
mediumvioletred: "#c71585",
midnightblue: "#191970",
mintcream: "#f5fffa",
mistyrose: "#ffe4e1",
moccasin: "#ffe4b5",
navajowhite: "#ffdead",
navy: "#000080",
oldlace: "#fdf5e6",
olive: "#808000",
olivedrab: "#6b8e23",
orange: "#ffa500",
orangered: "#ff4500",
orchid: "#da70d6",
palegoldenrod: "#eee8aa",
palegreen: "#98fb98",
paleturquoise: "#afeeee",
palevioletred: "#db7093",
papayawhip: "#ffefd5",
peachpuff: "#ffdab9",
peru: "#cd853f",
pink: "#ffc0cb",
plum: "#dda0dd",
powderblue: "#b0e0e6",
purple: "#800080",
red: "#ff0000",
rosybrown: "#bc8f8f",
royalblue: "#4169e1",
saddlebrown: "#8b4513",
salmon: "#fa8072",
sandybrown: "#f4a460",
seagreen: "#2e8b57",
seashell: "#fff5ee",
sienna: "#a0522d",
silver: "#c0c0c0",
skyblue: "#87ceeb",
slateblue: "#6a5acd",
slategray: "#708090",
slategrey: "#708090",
snow: "#fffafa",
springgreen: "#00ff7f",
steelblue: "#4682b4",
tan: "#d2b48c",
teal: "#008080",
thistle: "#d8bfd8",
tomato: "#ff6347",
turquoise: "#40e0d0",
violet: "#ee82ee",
wheat: "#f5deb3",
white: "#ffffff",
whitesmoke: "#f5f5f5",
yellow: "#ffff00",
yellowgreen: "#9acd32"
});
d3_rgb_names.forEach(function(key, value) {
d3_rgb_names.set(key, d3_rgb_parse(value, d3_rgb, d3_hsl_rgb));
});
d3.hsl = function(h, s, l) {
return arguments.length === 1
? (h instanceof d3_Hsl ? d3_hsl(h.h, h.s, h.l)
: d3_rgb_parse("" + h, d3_rgb_hsl, d3_hsl))
: d3_hsl(+h, +s, +l);
};
function d3_hsl(h, s, l) {
return new d3_Hsl(h, s, l);
}
function d3_Hsl(h, s, l) {
this.h = h;
this.s = s;
this.l = l;
}
d3_Hsl.prototype.brighter = function(k) {
k = Math.pow(0.7, arguments.length ? k : 1);
return d3_hsl(this.h, this.s, this.l / k);
};
d3_Hsl.prototype.darker = function(k) {
k = Math.pow(0.7, arguments.length ? k : 1);
return d3_hsl(this.h, this.s, k * this.l);
};
d3_Hsl.prototype.rgb = function() {
return d3_hsl_rgb(this.h, this.s, this.l);
};
d3_Hsl.prototype.toString = function() {
return this.rgb().toString();
};
function d3_hsl_rgb(h, s, l) {
var m1,
m2;
/* Some simple corrections for h, s and l. */
h = h % 360; if (h < 0) h += 360;
s = s < 0 ? 0 : s > 1 ? 1 : s;
l = l < 0 ? 0 : l > 1 ? 1 : l;
/* From FvD 13.37, CSS Color Module Level 3 */
m2 = l <= .5 ? l * (1 + s) : l + s - l * s;
m1 = 2 * l - m2;
function v(h) {
if (h > 360) h -= 360;
else if (h < 0) h += 360;
if (h < 60) return m1 + (m2 - m1) * h / 60;
if (h < 180) return m2;
if (h < 240) return m1 + (m2 - m1) * (240 - h) / 60;
return m1;
}
function vv(h) {
return Math.round(v(h) * 255);
}
return d3_rgb(vv(h + 120), vv(h), vv(h - 120));
}
function d3_selection(groups) {
d3_arraySubclass(groups, d3_selectionPrototype);
return groups;
}
var d3_select = function(s, n) { return n.querySelector(s); },
d3_selectAll = function(s, n) { return n.querySelectorAll(s); },
d3_selectRoot = document.documentElement,
d3_selectMatcher = d3_selectRoot.matchesSelector || d3_selectRoot.webkitMatchesSelector || d3_selectRoot.mozMatchesSelector || d3_selectRoot.msMatchesSelector || d3_selectRoot.oMatchesSelector,
d3_selectMatches = function(n, s) { return d3_selectMatcher.call(n, s); };
// Prefer Sizzle, if available.
if (typeof Sizzle === "function") {
d3_select = function(s, n) { return Sizzle(s, n)[0]; };
d3_selectAll = function(s, n) { return Sizzle.uniqueSort(Sizzle(s, n)); };
d3_selectMatches = Sizzle.matchesSelector;
}
var d3_selectionPrototype = [];
d3.selection = function() {
return d3_selectionRoot;
};
d3.selection.prototype = d3_selectionPrototype;
d3_selectionPrototype.select = function(selector) {
var subgroups = [],
subgroup,
subnode,
group,
node;
if (typeof selector !== "function") selector = d3_selection_selector(selector);
for (var j = -1, m = this.length; ++j < m;) {
subgroups.push(subgroup = []);
subgroup.parentNode = (group = this[j]).parentNode;
for (var i = -1, n = group.length; ++i < n;) {
if (node = group[i]) {
subgroup.push(subnode = selector.call(node, node.__data__, i));
if (subnode && "__data__" in node) subnode.__data__ = node.__data__;
} else {
subgroup.push(null);
}
}
}
return d3_selection(subgroups);
};
function d3_selection_selector(selector) {
return function() {
return d3_select(selector, this);
};
}
d3_selectionPrototype.selectAll = function(selector) {
var subgroups = [],
subgroup,
node;
if (typeof selector !== "function") selector = d3_selection_selectorAll(selector);
for (var j = -1, m = this.length; ++j < m;) {
for (var group = this[j], i = -1, n = group.length; ++i < n;) {
if (node = group[i]) {
subgroups.push(subgroup = d3_array(selector.call(node, node.__data__, i)));
subgroup.parentNode = node;
}
}
}
return d3_selection(subgroups);
};
function d3_selection_selectorAll(selector) {
return function() {
return d3_selectAll(selector, this);
};
}
d3_selectionPrototype.attr = function(name, value) {
name = d3.ns.qualify(name);
// If no value is specified, return the first value.
if (arguments.length < 2) {
var node = this.node();
return name.local
? node.getAttributeNS(name.space, name.local)
: node.getAttribute(name);
}
function attrNull() {
this.removeAttribute(name);
}
function attrNullNS() {
this.removeAttributeNS(name.space, name.local);
}
function attrConstant() {
this.setAttribute(name, value);
}
function attrConstantNS() {
this.setAttributeNS(name.space, name.local, value);
}
function attrFunction() {
var x = value.apply(this, arguments);
if (x == null) this.removeAttribute(name);
else this.setAttribute(name, x);
}
function attrFunctionNS() {
var x = value.apply(this, arguments);
if (x == null) this.removeAttributeNS(name.space, name.local);
else this.setAttributeNS(name.space, name.local, x);
}
return this.each(value == null
? (name.local ? attrNullNS : attrNull) : (typeof value === "function"
? (name.local ? attrFunctionNS : attrFunction)
: (name.local ? attrConstantNS : attrConstant)));
};
d3_selectionPrototype.classed = function(name, value) {
var names = name.split(d3_selection_classedWhitespace),
n = names.length,
i = -1;
if (arguments.length > 1) {
while (++i < n) d3_selection_classed.call(this, names[i], value);
return this;
} else {
while (++i < n) if (!d3_selection_classed.call(this, names[i])) return false;
return true;
}
};
var d3_selection_classedWhitespace = /\s+/g;
function d3_selection_classed(name, value) {
var re = new RegExp("(^|\\s+)" + d3.requote(name) + "(\\s+|$)", "g");
// If no value is specified, return the first value.
if (arguments.length < 2) {
var node = this.node();
if (c = node.classList) return c.contains(name);
var c = node.className;
re.lastIndex = 0;
return re.test(c.baseVal != null ? c.baseVal : c);
}
function classedAdd() {
if (c = this.classList) return c.add(name);
var c = this.className,
cb = c.baseVal != null,
cv = cb ? c.baseVal : c;
re.lastIndex = 0;
if (!re.test(cv)) {
cv = d3_collapse(cv + " " + name);
if (cb) c.baseVal = cv;
else this.className = cv;
}
}
function classedRemove() {
if (c = this.classList) return c.remove(name);
var c = this.className,
cb = c.baseVal != null,
cv = cb ? c.baseVal : c;
cv = d3_collapse(cv.replace(re, " "));
if (cb) c.baseVal = cv;
else this.className = cv;
}
function classedFunction() {
(value.apply(this, arguments)
? classedAdd
: classedRemove).call(this);
}
return this.each(typeof value === "function"
? classedFunction : value
? classedAdd
: classedRemove);
}
d3_selectionPrototype.style = function(name, value, priority) {
if (arguments.length < 3) priority = "";
// If no value is specified, return the first value.
if (arguments.length < 2) return window
.getComputedStyle(this.node(), null)
.getPropertyValue(name);
function styleNull() {
this.style.removeProperty(name);
}
function styleConstant() {
this.style.setProperty(name, value, priority);
}
function styleFunction() {
var x = value.apply(this, arguments);
if (x == null) this.style.removeProperty(name);
else this.style.setProperty(name, x, priority);
}
return this.each(value == null
? styleNull : (typeof value === "function"
? styleFunction : styleConstant));
};
d3_selectionPrototype.property = function(name, value) {
// If no value is specified, return the first value.
if (arguments.length < 2) return this.node()[name];
function propertyNull() {
delete this[name];
}
function propertyConstant() {
this[name] = value;
}
function propertyFunction() {
var x = value.apply(this, arguments);
if (x == null) delete this[name];
else this[name] = x;
}
return this.each(value == null
? propertyNull : (typeof value === "function"
? propertyFunction : propertyConstant));
};
d3_selectionPrototype.text = function(value) {
return arguments.length < 1
? this.node().textContent : this.each(typeof value === "function"
? function() { var v = value.apply(this, arguments); this.textContent = v == null ? "" : v; } : value == null
? function() { this.textContent = ""; }
: function() { this.textContent = value; });
};
d3_selectionPrototype.html = function(value) {
return arguments.length < 1
? this.node().innerHTML : this.each(typeof value === "function"
? function() { var v = value.apply(this, arguments); this.innerHTML = v == null ? "" : v; } : value == null
? function() { this.innerHTML = ""; }
: function() { this.innerHTML = value; });
};
// TODO append(node)?
// TODO append(function)?
d3_selectionPrototype.append = function(name) {
name = d3.ns.qualify(name);
function append() {
return this.appendChild(document.createElementNS(this.namespaceURI, name));
}
function appendNS() {
return this.appendChild(document.createElementNS(name.space, name.local));
}
return this.select(name.local ? appendNS : append);
};
// TODO insert(node, function)?
// TODO insert(function, string)?
// TODO insert(function, function)?
d3_selectionPrototype.insert = function(name, before) {
name = d3.ns.qualify(name);
function insert() {
return this.insertBefore(
document.createElementNS(this.namespaceURI, name),
d3_select(before, this));
}
function insertNS() {
return this.insertBefore(
document.createElementNS(name.space, name.local),
d3_select(before, this));
}
return this.select(name.local ? insertNS : insert);
};
// TODO remove(selector)?
// TODO remove(node)?
// TODO remove(function)?
d3_selectionPrototype.remove = function() {
return this.each(function() {
var parent = this.parentNode;
if (parent) parent.removeChild(this);
});
};
d3_selectionPrototype.data = function(value, key) {
var i = -1,
n = this.length,
group,
node;
// If no value is specified, return the first value.
if (!arguments.length) {
value = new Array(n = (group = this[0]).length);
while (++i < n) {
if (node = group[i]) {
value[i] = node.__data__;
}
}
return value;
}
function bind(group, groupData) {
var i,
n = group.length,
m = groupData.length,
n0 = Math.min(n, m),
n1 = Math.max(n, m),
updateNodes = [],
enterNodes = [],
exitNodes = [],
node,
nodeData;
if (key) {
var nodeByKeyValue = new d3_Map,
keyValues = [],
keyValue,
j = groupData.length;
for (i = -1; ++i < n;) {
keyValue = key.call(node = group[i], node.__data__, i);
if (nodeByKeyValue.has(keyValue)) {
exitNodes[j++] = node; // duplicate key
} else {
nodeByKeyValue.set(keyValue, node);
}
keyValues.push(keyValue);
}
for (i = -1; ++i < m;) {
keyValue = key.call(groupData, nodeData = groupData[i], i)
if (nodeByKeyValue.has(keyValue)) {
updateNodes[i] = node = nodeByKeyValue.get(keyValue);
node.__data__ = nodeData;
enterNodes[i] = exitNodes[i] = null;
} else {
enterNodes[i] = d3_selection_dataNode(nodeData);
updateNodes[i] = exitNodes[i] = null;
}
nodeByKeyValue.remove(keyValue);
}
for (i = -1; ++i < n;) {
if (nodeByKeyValue.has(keyValues[i])) {
exitNodes[i] = group[i];
}
}
} else {
for (i = -1; ++i < n0;) {
node = group[i];
nodeData = groupData[i];
if (node) {
node.__data__ = nodeData;
updateNodes[i] = node;
enterNodes[i] = exitNodes[i] = null;
} else {
enterNodes[i] = d3_selection_dataNode(nodeData);
updateNodes[i] = exitNodes[i] = null;
}
}
for (; i < m; ++i) {
enterNodes[i] = d3_selection_dataNode(groupData[i]);
updateNodes[i] = exitNodes[i] = null;
}
for (; i < n1; ++i) {
exitNodes[i] = group[i];
enterNodes[i] = updateNodes[i] = null;
}
}
enterNodes.update
= updateNodes;
enterNodes.parentNode
= updateNodes.parentNode
= exitNodes.parentNode
= group.parentNode;
enter.push(enterNodes);
update.push(updateNodes);
exit.push(exitNodes);
}
var enter = d3_selection_enter([]),
update = d3_selection([]),
exit = d3_selection([]);
if (typeof value === "function") {
while (++i < n) {
bind(group = this[i], value.call(group, group.parentNode.__data__, i));
}
} else {
while (++i < n) {
bind(group = this[i], value);
}
}
update.enter = function() { return enter; };
update.exit = function() { return exit; };
return update;
};
function d3_selection_dataNode(data) {
return {__data__: data};
}
d3_selectionPrototype.datum =
d3_selectionPrototype.map = function(value) {
return arguments.length < 1
? this.property("__data__")
: this.property("__data__", value);
};
d3_selectionPrototype.filter = function(filter) {
var subgroups = [],
subgroup,
group,
node;
if (typeof filter !== "function") filter = d3_selection_filter(filter);
for (var j = 0, m = this.length; j < m; j++) {
subgroups.push(subgroup = []);
subgroup.parentNode = (group = this[j]).parentNode;
for (var i = 0, n = group.length; i < n; i++) {
if ((node = group[i]) && filter.call(node, node.__data__, i)) {
subgroup.push(node);
}
}
}
return d3_selection(subgroups);
};
function d3_selection_filter(selector) {
return function() {
return d3_selectMatches(this, selector);
};
}
d3_selectionPrototype.order = function() {
for (var j = -1, m = this.length; ++j < m;) {
for (var group = this[j], i = group.length - 1, next = group[i], node; --i >= 0;) {
if (node = group[i]) {
if (next && next !== node.nextSibling) next.parentNode.insertBefore(node, next);
next = node;
}
}
}
return this;
};
d3_selectionPrototype.sort = function(comparator) {
comparator = d3_selection_sortComparator.apply(this, arguments);
for (var j = -1, m = this.length; ++j < m;) this[j].sort(comparator);
return this.order();
};
function d3_selection_sortComparator(comparator) {
if (!arguments.length) comparator = d3.ascending;
return function(a, b) {
return comparator(a && a.__data__, b && b.__data__);
};
}
// type can be namespaced, e.g., "click.foo"
// listener can be null for removal
d3_selectionPrototype.on = function(type, listener, capture) {
if (arguments.length < 3) capture = false;
// parse the type specifier
var name = "__on" + type, i = type.indexOf(".");
if (i > 0) type = type.substring(0, i);
// if called with only one argument, return the current listener
if (arguments.length < 2) return (i = this.node()[name]) && i._;
// remove the old event listener, and add the new event listener
return this.each(function(d, i) {
var node = this,
o = node[name];
// remove the old listener, if any (using the previously-set capture)
if (o) {
node.removeEventListener(type, o, o.$);
delete node[name];
}
// add the new listener, if any (remembering the capture flag)
if (listener) {
node.addEventListener(type, node[name] = l, l.$ = capture);
l._ = listener; // stash the unwrapped listener for get
}
// wrapped event listener that preserves i
function l(e) {
var o = d3.event; // Events can be reentrant (e.g., focus).
d3.event = e;
try {
listener.call(node, node.__data__, i);
} finally {
d3.event = o;
}
}
});
};
d3_selectionPrototype.each = function(callback) {
for (var j = -1, m = this.length; ++j < m;) {
for (var group = this[j], i = -1, n = group.length; ++i < n;) {
var node = group[i];
if (node) callback.call(node, node.__data__, i, j);
}
}
return this;
};
//
// Note: assigning to the arguments array simultaneously changes the value of
// the corresponding argument!
//
// TODO The `this` argument probably shouldn't be the first argument to the
// callback, anyway, since it's redundant. However, that will require a major
// version bump due to backwards compatibility, so I'm not changing it right
// away.
//
d3_selectionPrototype.call = function(callback) {
callback.apply(this, (arguments[0] = this, arguments));
return this;
};
d3_selectionPrototype.empty = function() {
return !this.node();
};
d3_selectionPrototype.node = function(callback) {
for (var j = 0, m = this.length; j < m; j++) {
for (var group = this[j], i = 0, n = group.length; i < n; i++) {
var node = group[i];
if (node) return node;
}
}
return null;
};
d3_selectionPrototype.transition = function() {
var subgroups = [],
subgroup,
node;
for (var j = -1, m = this.length; ++j < m;) {
subgroups.push(subgroup = []);
for (var group = this[j], i = -1, n = group.length; ++i < n;) {
subgroup.push((node = group[i]) ? {node: node, delay: d3_transitionDelay, duration: d3_transitionDuration} : null);
}
}
return d3_transition(subgroups, d3_transitionId || ++d3_transitionNextId, Date.now());
};
var d3_selectionRoot = d3_selection([[document]]);
d3_selectionRoot[0].parentNode = d3_selectRoot;
// TODO fast singleton implementation!
// TODO select(function)
d3.select = function(selector) {
return typeof selector === "string"
? d3_selectionRoot.select(selector)
: d3_selection([[selector]]); // assume node
};
// TODO selectAll(function)
d3.selectAll = function(selector) {
return typeof selector === "string"
? d3_selectionRoot.selectAll(selector)
: d3_selection([d3_array(selector)]); // assume node[]
};
function d3_selection_enter(selection) {
d3_arraySubclass(selection, d3_selection_enterPrototype);
return selection;
}
var d3_selection_enterPrototype = [];
d3.selection.enter = d3_selection_enter;
d3.selection.enter.prototype = d3_selection_enterPrototype;
d3_selection_enterPrototype.append = d3_selectionPrototype.append;
d3_selection_enterPrototype.insert = d3_selectionPrototype.insert;
d3_selection_enterPrototype.empty = d3_selectionPrototype.empty;
d3_selection_enterPrototype.node = d3_selectionPrototype.node;
d3_selection_enterPrototype.select = function(selector) {
var subgroups = [],
subgroup,
subnode,
upgroup,
group,
node;
for (var j = -1, m = this.length; ++j < m;) {
upgroup = (group = this[j]).update;
subgroups.push(subgroup = []);
subgroup.parentNode = group.parentNode;
for (var i = -1, n = group.length; ++i < n;) {
if (node = group[i]) {
subgroup.push(upgroup[i] = subnode = selector.call(group.parentNode, node.__data__, i));
subnode.__data__ = node.__data__;
} else {
subgroup.push(null);
}
}
}
return d3_selection(subgroups);
};
function d3_transition(groups, id, time) {
d3_arraySubclass(groups, d3_transitionPrototype);
var tweens = new d3_Map,
event = d3.dispatch("start", "end"),
ease = d3_transitionEase;
groups.id = id;
groups.time = time;
groups.tween = function(name, tween) {
if (arguments.length < 2) return tweens.get(name);
if (tween == null) tweens.remove(name);
else tweens.set(name, tween);
return groups;
};
groups.ease = function(value) {
if (!arguments.length) return ease;
ease = typeof value === "function" ? value : d3.ease.apply(d3, arguments);
return groups;
};
groups.each = function(type, listener) {
if (arguments.length < 2) return d3_transition_each.call(groups, type);
event.on(type, listener);
return groups;
};
d3.timer(function(elapsed) {
groups.each(function(d, i, j) {
var tweened = [],
node = this,
delay = groups[j][i].delay,
duration = groups[j][i].duration,
lock = node.__transition__ || (node.__transition__ = {active: 0, count: 0});
++lock.count;
delay <= elapsed ? start(elapsed) : d3.timer(start, delay, time);
function start(elapsed) {
if (lock.active > id) return stop();
lock.active = id;
tweens.forEach(function(key, value) {
if (value = value.call(node, d, i)) {
tweened.push(value);
}
});
event.start.call(node, d, i);
if (!tick(elapsed)) d3.timer(tick, 0, time);
return 1;
}
function tick(elapsed) {
if (lock.active !== id) return stop();
var t = (elapsed - delay) / duration,
e = ease(t),
n = tweened.length;
while (n > 0) {
tweened[--n].call(node, e);
}
if (t >= 1) {
stop();
d3_transitionId = id;
event.end.call(node, d, i);
d3_transitionId = 0;
return 1;
}
}
function stop() {
if (!--lock.count) delete node.__transition__;
return 1;
}
});
return 1;
}, 0, time);
return groups;
}
var d3_transitionRemove = {};
function d3_transitionNull(d, i, a) {
return a != "" && d3_transitionRemove;
}
function d3_transitionTween(name, b) {
var interpolate = d3_interpolateByName(name);
function transitionFunction(d, i, a) {
var v = b.call(this, d, i);
return v == null
? a != "" && d3_transitionRemove
: a != v && interpolate(a, v);
}
function transitionString(d, i, a) {
return a != b && interpolate(a, b);
}
return typeof b === "function" ? transitionFunction
: b == null ? d3_transitionNull
: (b += "", transitionString);
}
var d3_transitionPrototype = [],
d3_transitionNextId = 0,
d3_transitionId = 0,
d3_transitionDefaultDelay = 0,
d3_transitionDefaultDuration = 250,
d3_transitionDefaultEase = d3.ease("cubic-in-out"),
d3_transitionDelay = d3_transitionDefaultDelay,
d3_transitionDuration = d3_transitionDefaultDuration,
d3_transitionEase = d3_transitionDefaultEase;
d3_transitionPrototype.call = d3_selectionPrototype.call;
d3.transition = function(selection) {
return arguments.length
? (d3_transitionId ? selection.transition() : selection)
: d3_selectionRoot.transition();
};
d3.transition.prototype = d3_transitionPrototype;
d3_transitionPrototype.select = function(selector) {
var subgroups = [],
subgroup,
subnode,
node;
if (typeof selector !== "function") selector = d3_selection_selector(selector);
for (var j = -1, m = this.length; ++j < m;) {
subgroups.push(subgroup = []);
for (var group = this[j], i = -1, n = group.length; ++i < n;) {
if ((node = group[i]) && (subnode = selector.call(node.node, node.node.__data__, i))) {
if ("__data__" in node.node) subnode.__data__ = node.node.__data__;
subgroup.push({node: subnode, delay: node.delay, duration: node.duration});
} else {
subgroup.push(null);
}
}
}
return d3_transition(subgroups, this.id, this.time).ease(this.ease());
};
d3_transitionPrototype.selectAll = function(selector) {
var subgroups = [],
subgroup,
subnodes,
node;
if (typeof selector !== "function") selector = d3_selection_selectorAll(selector);
for (var j = -1, m = this.length; ++j < m;) {
for (var group = this[j], i = -1, n = group.length; ++i < n;) {
if (node = group[i]) {
subnodes = selector.call(node.node, node.node.__data__, i);
subgroups.push(subgroup = []);
for (var k = -1, o = subnodes.length; ++k < o;) {
subgroup.push({node: subnodes[k], delay: node.delay, duration: node.duration});
}
}
}
}
return d3_transition(subgroups, this.id, this.time).ease(this.ease());
};
d3_transitionPrototype.attr = function(name, value) {
return this.attrTween(name, d3_transitionTween(name, value));
};
d3_transitionPrototype.attrTween = function(nameNS, tween) {
var name = d3.ns.qualify(nameNS);
function attrTween(d, i) {
var f = tween.call(this, d, i, this.getAttribute(name));
return f === d3_transitionRemove
? (this.removeAttribute(name), null)
: f && function(t) { this.setAttribute(name, f(t)); };
}
function attrTweenNS(d, i) {
var f = tween.call(this, d, i, this.getAttributeNS(name.space, name.local));
return f === d3_transitionRemove
? (this.removeAttributeNS(name.space, name.local), null)
: f && function(t) { this.setAttributeNS(name.space, name.local, f(t)); };
}
return this.tween("attr." + nameNS, name.local ? attrTweenNS : attrTween);
};
d3_transitionPrototype.style = function(name, value, priority) {
if (arguments.length < 3) priority = "";
return this.styleTween(name, d3_transitionTween(name, value), priority);
};
d3_transitionPrototype.styleTween = function(name, tween, priority) {
if (arguments.length < 3) priority = "";
return this.tween("style." + name, function(d, i) {
var f = tween.call(this, d, i, window.getComputedStyle(this, null).getPropertyValue(name));
return f === d3_transitionRemove
? (this.style.removeProperty(name), null)
: f && function(t) { this.style.setProperty(name, f(t), priority); };
});
};
d3_transitionPrototype.text = function(value) {
return this.tween("text", function(d, i) {
this.textContent = typeof value === "function"
? value.call(this, d, i)
: value;
});
};
d3_transitionPrototype.remove = function() {
return this.each("end.transition", function() {
var p;
if (!this.__transition__ && (p = this.parentNode)) p.removeChild(this);
});
};
d3_transitionPrototype.delay = function(value) {
var groups = this;
return groups.each(typeof value === "function"
? function(d, i, j) { groups[j][i].delay = value.apply(this, arguments) | 0; }
: (value = value | 0, function(d, i, j) { groups[j][i].delay = value; }));
};
d3_transitionPrototype.duration = function(value) {
var groups = this;
return groups.each(typeof value === "function"
? function(d, i, j) { groups[j][i].duration = Math.max(1, value.apply(this, arguments) | 0); }
: (value = Math.max(1, value | 0), function(d, i, j) { groups[j][i].duration = value; }));
};
function d3_transition_each(callback) {
var id = d3_transitionId,
ease = d3_transitionEase,
delay = d3_transitionDelay,
duration = d3_transitionDuration;
d3_transitionId = this.id;
d3_transitionEase = this.ease();
for (var j = 0, m = this.length; j < m; j++) {
for (var group = this[j], i = 0, n = group.length; i < n; i++) {
var node = group[i];
if (node) {
d3_transitionDelay = this[j][i].delay;
d3_transitionDuration = this[j][i].duration;
callback.call(node = node.node, node.__data__, i, j);
}
}
}
d3_transitionId = id;
d3_transitionEase = ease;
d3_transitionDelay = delay;
d3_transitionDuration = duration;
return this;
}
d3_transitionPrototype.transition = function() {
return this.select(d3_this);
};
var d3_timer_queue = null,
d3_timer_interval, // is an interval (or frame) active?
d3_timer_timeout; // is a timeout active?
// The timer will continue to fire until callback returns true.
d3.timer = function(callback, delay, then) {
var found = false,
t0,
t1 = d3_timer_queue;
if (arguments.length < 3) {
if (arguments.length < 2) delay = 0;
else if (!isFinite(delay)) return;
then = Date.now();
}
// See if the callback's already in the queue.
while (t1) {
if (t1.callback === callback) {
t1.then = then;
t1.delay = delay;
found = true;
break;
}
t0 = t1;
t1 = t1.next;
}
// Otherwise, add the callback to the queue.
if (!found) d3_timer_queue = {
callback: callback,
then: then,
delay: delay,
next: d3_timer_queue
};
// Start animatin'!
if (!d3_timer_interval) {
d3_timer_timeout = clearTimeout(d3_timer_timeout);
d3_timer_interval = 1;
d3_timer_frame(d3_timer_step);
}
}
function d3_timer_step() {
var elapsed,
now = Date.now(),
t1 = d3_timer_queue;
while (t1) {
elapsed = now - t1.then;
if (elapsed >= t1.delay) t1.flush = t1.callback(elapsed);
t1 = t1.next;
}
var delay = d3_timer_flush() - now;
if (delay > 24) {
if (isFinite(delay)) {
clearTimeout(d3_timer_timeout);
d3_timer_timeout = setTimeout(d3_timer_step, delay);
}
d3_timer_interval = 0;
} else {
d3_timer_interval = 1;
d3_timer_frame(d3_timer_step);
}
}
d3.timer.flush = function() {
var elapsed,
now = Date.now(),
t1 = d3_timer_queue;
while (t1) {
elapsed = now - t1.then;
if (!t1.delay) t1.flush = t1.callback(elapsed);
t1 = t1.next;
}
d3_timer_flush();
};
// Flush after callbacks, to avoid concurrent queue modification.
function d3_timer_flush() {
var t0 = null,
t1 = d3_timer_queue,
then = Infinity;
while (t1) {
if (t1.flush) {
t1 = t0 ? t0.next = t1.next : d3_timer_queue = t1.next;
} else {
then = Math.min(then, t1.then + t1.delay);
t1 = (t0 = t1).next;
}
}
return then;
}
var d3_timer_frame = window.requestAnimationFrame
|| window.webkitRequestAnimationFrame
|| window.mozRequestAnimationFrame
|| window.oRequestAnimationFrame
|| window.msRequestAnimationFrame
|| function(callback) { setTimeout(callback, 17); };
d3.transform = function(string) {
var g = document.createElementNS(d3.ns.prefix.svg, "g"),
identity = {a: 1, b: 0, c: 0, d: 1, e: 0, f: 0};
return (d3.transform = function(string) {
g.setAttribute("transform", string);
var t = g.transform.baseVal.consolidate();
return new d3_transform(t ? t.matrix : identity);
})(string);
};
// Compute x-scale and normalize the first row.
// Compute shear and make second row orthogonal to first.
// Compute y-scale and normalize the second row.
// Finally, compute the rotation.
function d3_transform(m) {
var r0 = [m.a, m.b],
r1 = [m.c, m.d],
kx = d3_transformNormalize(r0),
kz = d3_transformDot(r0, r1),
ky = d3_transformNormalize(d3_transformCombine(r1, r0, -kz)) || 0;
if (r0[0] * r1[1] < r1[0] * r0[1]) {
r0[0] *= -1;
r0[1] *= -1;
kx *= -1;
kz *= -1;
}
this.rotate = (kx ? Math.atan2(r0[1], r0[0]) : Math.atan2(-r1[0], r1[1])) * d3_transformDegrees;
this.translate = [m.e, m.f];
this.scale = [kx, ky];
this.skew = ky ? Math.atan2(kz, ky) * d3_transformDegrees : 0;
};
d3_transform.prototype.toString = function() {
return "translate(" + this.translate
+ ")rotate(" + this.rotate
+ ")skewX(" + this.skew
+ ")scale(" + this.scale
+ ")";
};
function d3_transformDot(a, b) {
return a[0] * b[0] + a[1] * b[1];
}
function d3_transformNormalize(a) {
var k = Math.sqrt(d3_transformDot(a, a));
if (k) {
a[0] /= k;
a[1] /= k;
}
return k;
}
function d3_transformCombine(a, b, k) {
a[0] += k * b[0];
a[1] += k * b[1];
return a;
}
var d3_transformDegrees = 180 / Math.PI;
d3.mouse = function(container) {
return d3_mousePoint(container, d3_eventSource());
};
// https://bugs.webkit.org/show_bug.cgi?id=44083
var d3_mouse_bug44083 = /WebKit/.test(navigator.userAgent) ? -1 : 0;
function d3_mousePoint(container, e) {
var svg = container.ownerSVGElement || container;
if (svg.createSVGPoint) {
var point = svg.createSVGPoint();
if ((d3_mouse_bug44083 < 0) && (window.scrollX || window.scrollY)) {
svg = d3.select(document.body)
.append("svg")
.style("position", "absolute")
.style("top", 0)
.style("left", 0);
var ctm = svg[0][0].getScreenCTM();
d3_mouse_bug44083 = !(ctm.f || ctm.e);
svg.remove();
}
if (d3_mouse_bug44083) {
point.x = e.pageX;
point.y = e.pageY;
} else {
point.x = e.clientX;
point.y = e.clientY;
}
point = point.matrixTransform(container.getScreenCTM().inverse());
return [point.x, point.y];
}
var rect = container.getBoundingClientRect();
return [e.clientX - rect.left - container.clientLeft, e.clientY - rect.top - container.clientTop];
};
d3.touches = function(container, touches) {
if (arguments.length < 2) touches = d3_eventSource().touches;
return touches ? d3_array(touches).map(function(touch) {
var point = d3_mousePoint(container, touch);
point.identifier = touch.identifier;
return point;
}) : [];
};
function d3_noop() {}
d3.scale = {};
function d3_scaleExtent(domain) {
var start = domain[0], stop = domain[domain.length - 1];
return start < stop ? [start, stop] : [stop, start];
}
function d3_scaleRange(scale) {
return scale.rangeExtent ? scale.rangeExtent() : d3_scaleExtent(scale.range());
}
function d3_scale_nice(domain, nice) {
var i0 = 0,
i1 = domain.length - 1,
x0 = domain[i0],
x1 = domain[i1],
dx;
if (x1 < x0) {
dx = i0; i0 = i1; i1 = dx;
dx = x0; x0 = x1; x1 = dx;
}
if (dx = x1 - x0) {
nice = nice(dx);
domain[i0] = nice.floor(x0);
domain[i1] = nice.ceil(x1);
}
return domain;
}
function d3_scale_niceDefault() {
return Math;
}
d3.scale.linear = function() {
return d3_scale_linear([0, 1], [0, 1], d3.interpolate, false);
};
function d3_scale_linear(domain, range, interpolate, clamp) {
var output,
input;
function rescale() {
var linear = Math.min(domain.length, range.length) > 2 ? d3_scale_polylinear : d3_scale_bilinear,
uninterpolate = clamp ? d3_uninterpolateClamp : d3_uninterpolateNumber;
output = linear(domain, range, uninterpolate, interpolate);
input = linear(range, domain, uninterpolate, d3.interpolate);
return scale;
}
function scale(x) {
return output(x);
}
// Note: requires range is coercible to number!
scale.invert = function(y) {
return input(y);
};
scale.domain = function(x) {
if (!arguments.length) return domain;
domain = x.map(Number);
return rescale();
};
scale.range = function(x) {
if (!arguments.length) return range;
range = x;
return rescale();
};
scale.rangeRound = function(x) {
return scale.range(x).interpolate(d3.interpolateRound);
};
scale.clamp = function(x) {
if (!arguments.length) return clamp;
clamp = x;
return rescale();
};
scale.interpolate = function(x) {
if (!arguments.length) return interpolate;
interpolate = x;
return rescale();
};
scale.ticks = function(m) {
return d3_scale_linearTicks(domain, m);
};
scale.tickFormat = function(m) {
return d3_scale_linearTickFormat(domain, m);
};
scale.nice = function() {
d3_scale_nice(domain, d3_scale_linearNice);
return rescale();
};
scale.copy = function() {
return d3_scale_linear(domain, range, interpolate, clamp);
};
return rescale();
}
function d3_scale_linearRebind(scale, linear) {
return d3.rebind(scale, linear, "range", "rangeRound", "interpolate", "clamp");
}
function d3_scale_linearNice(dx) {
dx = Math.pow(10, Math.round(Math.log(dx) / Math.LN10) - 1);
return {
floor: function(x) { return Math.floor(x / dx) * dx; },
ceil: function(x) { return Math.ceil(x / dx) * dx; }
};
}
function d3_scale_linearTickRange(domain, m) {
var extent = d3_scaleExtent(domain),
span = extent[1] - extent[0],
step = Math.pow(10, Math.floor(Math.log(span / m) / Math.LN10)),
err = m / span * step;
// Filter ticks to get closer to the desired count.
if (err <= .15) step *= 10;
else if (err <= .35) step *= 5;
else if (err <= .75) step *= 2;
// Round start and stop values to step interval.
extent[0] = Math.ceil(extent[0] / step) * step;
extent[1] = Math.floor(extent[1] / step) * step + step * .5; // inclusive
extent[2] = step;
return extent;
}
function d3_scale_linearTicks(domain, m) {
return d3.range.apply(d3, d3_scale_linearTickRange(domain, m));
}
function d3_scale_linearTickFormat(domain, m) {
return d3.format(",." + Math.max(0, -Math.floor(Math.log(d3_scale_linearTickRange(domain, m)[2]) / Math.LN10 + .01)) + "f");
}
function d3_scale_bilinear(domain, range, uninterpolate, interpolate) {
var u = uninterpolate(domain[0], domain[1]),
i = interpolate(range[0], range[1]);
return function(x) {
return i(u(x));
};
}
function d3_scale_polylinear(domain, range, uninterpolate, interpolate) {
var u = [],
i = [],
j = 0,
k = Math.min(domain.length, range.length) - 1;
// Handle descending domains.
if (domain[k] < domain[0]) {
domain = domain.slice().reverse();
range = range.slice().reverse();
}
while (++j <= k) {
u.push(uninterpolate(domain[j - 1], domain[j]));
i.push(interpolate(range[j - 1], range[j]));
}
return function(x) {
var j = d3.bisect(domain, x, 1, k) - 1;
return i[j](u[j](x));
};
}
d3.scale.log = function() {
return d3_scale_log(d3.scale.linear(), d3_scale_logp);
};
function d3_scale_log(linear, log) {
var pow = log.pow;
function scale(x) {
return linear(log(x));
}
scale.invert = function(x) {
return pow(linear.invert(x));
};
scale.domain = function(x) {
if (!arguments.length) return linear.domain().map(pow);
log = x[0] < 0 ? d3_scale_logn : d3_scale_logp;
pow = log.pow;
linear.domain(x.map(log));
return scale;
};
scale.nice = function() {
linear.domain(d3_scale_nice(linear.domain(), d3_scale_niceDefault));
return scale;
};
scale.ticks = function() {
var extent = d3_scaleExtent(linear.domain()),
ticks = [];
if (extent.every(isFinite)) {
var i = Math.floor(extent[0]),
j = Math.ceil(extent[1]),
u = pow(extent[0]),
v = pow(extent[1]);
if (log === d3_scale_logn) {
ticks.push(pow(i));
for (; i++ < j;) for (var k = 9; k > 0; k--) ticks.push(pow(i) * k);
} else {
for (; i < j; i++) for (var k = 1; k < 10; k++) ticks.push(pow(i) * k);
ticks.push(pow(i));
}
for (i = 0; ticks[i] < u; i++) {} // strip small values
for (j = ticks.length; ticks[j - 1] > v; j--) {} // strip big values
ticks = ticks.slice(i, j);
}
return ticks;
};
scale.tickFormat = function(n, format) {
if (arguments.length < 2) format = d3_scale_logFormat;
if (arguments.length < 1) return format;
var k = n / scale.ticks().length,
f = log === d3_scale_logn ? (e = -1e-12, Math.floor) : (e = 1e-12, Math.ceil),
e;
return function(d) {
// see https://github.com/mbostock/d3/issues/655
//return d / pow(f(log(d) + e)) < k ? format(d) : "";
return d / pow(f(log(d) + e)) == 0.1 ? format(d) : "";
};
};
scale.copy = function() {
return d3_scale_log(linear.copy(), log);
};
return d3_scale_linearRebind(scale, linear);
}
var d3_scale_logFormat = d3.format(".0e");
function d3_scale_logp(x) {
return Math.log(x < 0 ? 0 : x) / Math.LN10;
}
function d3_scale_logn(x) {
return -Math.log(x > 0 ? 0 : -x) / Math.LN10;
}
d3_scale_logp.pow = function(x) {
return Math.pow(10, x);
};
d3_scale_logn.pow = function(x) {
return -Math.pow(10, -x);
};
d3.scale.pow = function() {
return d3_scale_pow(d3.scale.linear(), 1);
};
function d3_scale_pow(linear, exponent) {
var powp = d3_scale_powPow(exponent),
powb = d3_scale_powPow(1 / exponent);
function scale(x) {
return linear(powp(x));
}
scale.invert = function(x) {
return powb(linear.invert(x));
};
scale.domain = function(x) {
if (!arguments.length) return linear.domain().map(powb);
linear.domain(x.map(powp));
return scale;
};
scale.ticks = function(m) {
return d3_scale_linearTicks(scale.domain(), m);
};
scale.tickFormat = function(m) {
return d3_scale_linearTickFormat(scale.domain(), m);
};
scale.nice = function() {
return scale.domain(d3_scale_nice(scale.domain(), d3_scale_linearNice));
};
scale.exponent = function(x) {
if (!arguments.length) return exponent;
var domain = scale.domain();
powp = d3_scale_powPow(exponent = x);
powb = d3_scale_powPow(1 / exponent);
return scale.domain(domain);
};
scale.copy = function() {
return d3_scale_pow(linear.copy(), exponent);
};
return d3_scale_linearRebind(scale, linear);
}
function d3_scale_powPow(e) {
return function(x) {
return x < 0 ? -Math.pow(-x, e) : Math.pow(x, e);
};
}
d3.scale.sqrt = function() {
return d3.scale.pow().exponent(.5);
};
d3.scale.ordinal = function() {
return d3_scale_ordinal([], {t: "range", x: []});
};
function d3_scale_ordinal(domain, ranger) {
var index,
range,
rangeBand;
function scale(x) {
return range[((index.get(x) || index.set(x, domain.push(x))) - 1) % range.length];
}
function steps(start, step) {
return d3.range(domain.length).map(function(i) { return start + step * i; });
}
scale.domain = function(x) {
if (!arguments.length) return domain;
domain = [];
index = new d3_Map;
var i = -1, n = x.length, xi;
while (++i < n) if (!index.has(xi = x[i])) index.set(xi, domain.push(xi));
return scale[ranger.t](ranger.x, ranger.p);
};
scale.range = function(x) {
if (!arguments.length) return range;
range = x;
rangeBand = 0;
ranger = {t: "range", x: x};
return scale;
};
scale.rangePoints = function(x, padding) {
if (arguments.length < 2) padding = 0;
var start = x[0],
stop = x[1],
step = (stop - start) / (domain.length - 1 + padding);
range = steps(domain.length < 2 ? (start + stop) / 2 : start + step * padding / 2, step);
rangeBand = 0;
ranger = {t: "rangePoints", x: x, p: padding};
return scale;
};
scale.rangeBands = function(x, padding) {
if (arguments.length < 2) padding = 0;
var reverse = x[1] < x[0],
start = x[reverse - 0],
stop = x[1 - reverse],
step = (stop - start) / (domain.length + padding);
range = steps(start + step * padding, step);
if (reverse) range.reverse();
rangeBand = step * (1 - padding);
ranger = {t: "rangeBands", x: x, p: padding};
return scale;
};
scale.rangeRoundBands = function(x, padding) {
if (arguments.length < 2) padding = 0;
var reverse = x[1] < x[0],
start = x[reverse - 0],
stop = x[1 - reverse],
step = Math.floor((stop - start) / (domain.length + padding)),
error = stop - start - (domain.length - padding) * step;
range = steps(start + Math.round(error / 2), step);
if (reverse) range.reverse();
rangeBand = Math.round(step * (1 - padding));
ranger = {t: "rangeRoundBands", x: x, p: padding};
return scale;
};
scale.rangeBand = function() {
return rangeBand;
};
scale.rangeExtent = function() {
return d3_scaleExtent(ranger.x);
};
scale.copy = function() {
return d3_scale_ordinal(domain, ranger);
};
return scale.domain(domain);
}
/*
* This product includes color specifications and designs developed by Cynthia
* Brewer (http://colorbrewer.org/). See lib/colorbrewer for more information.
*/
d3.scale.category10 = function() {
return d3.scale.ordinal().range(d3_category10);
};
d3.scale.category20 = function() {
return d3.scale.ordinal().range(d3_category20);
};
d3.scale.category20b = function() {
return d3.scale.ordinal().range(d3_category20b);
};
d3.scale.category20c = function() {
return d3.scale.ordinal().range(d3_category20c);
};
var d3_category10 = [
"#1f77b4", "#ff7f0e", "#2ca02c", "#d62728", "#9467bd",
"#8c564b", "#e377c2", "#7f7f7f", "#bcbd22", "#17becf"
];
var d3_category20 = [
"#1f77b4", "#aec7e8",
"#ff7f0e", "#ffbb78",
"#2ca02c", "#98df8a",
"#d62728", "#ff9896",
"#9467bd", "#c5b0d5",
"#8c564b", "#c49c94",
"#e377c2", "#f7b6d2",
"#7f7f7f", "#c7c7c7",
"#bcbd22", "#dbdb8d",
"#17becf", "#9edae5"
];
var d3_category20b = [
"#393b79", "#5254a3", "#6b6ecf", "#9c9ede",
"#637939", "#8ca252", "#b5cf6b", "#cedb9c",
"#8c6d31", "#bd9e39", "#e7ba52", "#e7cb94",
"#843c39", "#ad494a", "#d6616b", "#e7969c",
"#7b4173", "#a55194", "#ce6dbd", "#de9ed6"
];
var d3_category20c = [
"#3182bd", "#6baed6", "#9ecae1", "#c6dbef",
"#e6550d", "#fd8d3c", "#fdae6b", "#fdd0a2",
"#31a354", "#74c476", "#a1d99b", "#c7e9c0",
"#756bb1", "#9e9ac8", "#bcbddc", "#dadaeb",
"#636363", "#969696", "#bdbdbd", "#d9d9d9"
];
d3.scale.quantile = function() {
return d3_scale_quantile([], []);
};
function d3_scale_quantile(domain, range) {
var thresholds;
function rescale() {
var k = 0,
n = domain.length,
q = range.length;
thresholds = [];
while (++k < q) thresholds[k - 1] = d3.quantile(domain, k / q);
return scale;
}
function scale(x) {
if (isNaN(x = +x)) return NaN;
return range[d3.bisect(thresholds, x)];
}
scale.domain = function(x) {
if (!arguments.length) return domain;
domain = x.filter(function(d) { return !isNaN(d); }).sort(d3.ascending);
return rescale();
};
scale.range = function(x) {
if (!arguments.length) return range;
range = x;
return rescale();
};
scale.quantiles = function() {
return thresholds;
};
scale.copy = function() {
return d3_scale_quantile(domain, range); // copy on write!
};
return rescale();
}
d3.scale.quantize = function() {
return d3_scale_quantize(0, 1, [0, 1]);
};
function d3_scale_quantize(x0, x1, range) {
var kx, i;
function scale(x) {
return range[Math.max(0, Math.min(i, Math.floor(kx * (x - x0))))];
}
function rescale() {
kx = range.length / (x1 - x0);
i = range.length - 1;
return scale;
}
scale.domain = function(x) {
if (!arguments.length) return [x0, x1];
x0 = +x[0];
x1 = +x[x.length - 1];
return rescale();
};
scale.range = function(x) {
if (!arguments.length) return range;
range = x;
return rescale();
};
scale.copy = function() {
return d3_scale_quantize(x0, x1, range); // copy on write
};
return rescale();
}
d3.scale.identity = function() {
return d3_scale_identity([0, 1]);
};
function d3_scale_identity(domain) {
function identity(x) { return +x; }
identity.invert = identity;
identity.domain = identity.range = function(x) {
if (!arguments.length) return domain;
domain = x.map(identity);
return identity;
};
identity.ticks = function(m) {
return d3_scale_linearTicks(domain, m);
};
identity.tickFormat = function(m) {
return d3_scale_linearTickFormat(domain, m);
};
identity.copy = function() {
return d3_scale_identity(domain);
};
return identity;
}
d3.svg = {};
d3.svg.arc = function() {
var innerRadius = d3_svg_arcInnerRadius,
outerRadius = d3_svg_arcOuterRadius,
startAngle = d3_svg_arcStartAngle,
endAngle = d3_svg_arcEndAngle;
function arc() {
var r0 = innerRadius.apply(this, arguments),
r1 = outerRadius.apply(this, arguments),
a0 = startAngle.apply(this, arguments) + d3_svg_arcOffset,
a1 = endAngle.apply(this, arguments) + d3_svg_arcOffset,
da = (a1 < a0 && (da = a0, a0 = a1, a1 = da), a1 - a0),
df = da < Math.PI ? "0" : "1",
c0 = Math.cos(a0),
s0 = Math.sin(a0),
c1 = Math.cos(a1),
s1 = Math.sin(a1);
return da >= d3_svg_arcMax
? (r0
? "M0," + r1
+ "A" + r1 + "," + r1 + " 0 1,1 0," + (-r1)
+ "A" + r1 + "," + r1 + " 0 1,1 0," + r1
+ "M0," + r0
+ "A" + r0 + "," + r0 + " 0 1,0 0," + (-r0)
+ "A" + r0 + "," + r0 + " 0 1,0 0," + r0
+ "Z"
: "M0," + r1
+ "A" + r1 + "," + r1 + " 0 1,1 0," + (-r1)
+ "A" + r1 + "," + r1 + " 0 1,1 0," + r1
+ "Z")
: (r0
? "M" + r1 * c0 + "," + r1 * s0
+ "A" + r1 + "," + r1 + " 0 " + df + ",1 " + r1 * c1 + "," + r1 * s1
+ "L" + r0 * c1 + "," + r0 * s1
+ "A" + r0 + "," + r0 + " 0 " + df + ",0 " + r0 * c0 + "," + r0 * s0
+ "Z"
: "M" + r1 * c0 + "," + r1 * s0
+ "A" + r1 + "," + r1 + " 0 " + df + ",1 " + r1 * c1 + "," + r1 * s1
+ "L0,0"
+ "Z");
}
arc.innerRadius = function(v) {
if (!arguments.length) return innerRadius;
innerRadius = d3_functor(v);
return arc;
};
arc.outerRadius = function(v) {
if (!arguments.length) return outerRadius;
outerRadius = d3_functor(v);
return arc;
};
arc.startAngle = function(v) {
if (!arguments.length) return startAngle;
startAngle = d3_functor(v);
return arc;
};
arc.endAngle = function(v) {
if (!arguments.length) return endAngle;
endAngle = d3_functor(v);
return arc;
};
arc.centroid = function() {
var r = (innerRadius.apply(this, arguments)
+ outerRadius.apply(this, arguments)) / 2,
a = (startAngle.apply(this, arguments)
+ endAngle.apply(this, arguments)) / 2 + d3_svg_arcOffset;
return [Math.cos(a) * r, Math.sin(a) * r];
};
return arc;
};
var d3_svg_arcOffset = -Math.PI / 2,
d3_svg_arcMax = 2 * Math.PI - 1e-6;
function d3_svg_arcInnerRadius(d) {
return d.innerRadius;
}
function d3_svg_arcOuterRadius(d) {
return d.outerRadius;
}
function d3_svg_arcStartAngle(d) {
return d.startAngle;
}
function d3_svg_arcEndAngle(d) {
return d.endAngle;
}
function d3_svg_line(projection) {
var x = d3_svg_lineX,
y = d3_svg_lineY,
defined = d3_true,
interpolate = d3_svg_lineInterpolatorDefault,
interpolator = d3_svg_lineLinear,
tension = .7;
function line(data) {
var segments = [],
points = [],
i = -1,
n = data.length,
d,
fx = d3_functor(x),
fy = d3_functor(y);
function segment() {
segments.push("M", interpolator(projection(points), tension));
}
while (++i < n) {
if (defined.call(this, d = data[i], i)) {
points.push([+fx.call(this, d, i), +fy.call(this, d, i)]);
} else if (points.length) {
segment();
points = [];
}
}
if (points.length) segment();
return segments.length ? segments.join("") : null;
}
line.x = function(_) {
if (!arguments.length) return x;
x = _;
return line;
};
line.y = function(_) {
if (!arguments.length) return y;
y = _;
return line;
};
line.defined = function(_) {
if (!arguments.length) return defined;
defined = _;
return line;
};
line.interpolate = function(_) {
if (!arguments.length) return interpolate;
if (!d3_svg_lineInterpolators.has(_ += "")) _ = d3_svg_lineInterpolatorDefault;
interpolator = d3_svg_lineInterpolators.get(interpolate = _);
return line;
};
line.tension = function(_) {
if (!arguments.length) return tension;
tension = _;
return line;
};
return line;
}
d3.svg.line = function() {
return d3_svg_line(d3_identity);
};
// The default `x` property, which references d[0].
function d3_svg_lineX(d) {
return d[0];
}
// The default `y` property, which references d[1].
function d3_svg_lineY(d) {
return d[1];
}
var d3_svg_lineInterpolatorDefault = "linear";
// The various interpolators supported by the `line` class.
var d3_svg_lineInterpolators = d3.map({
"linear": d3_svg_lineLinear,
"step-before": d3_svg_lineStepBefore,
"step-after": d3_svg_lineStepAfter,
"basis": d3_svg_lineBasis,
"basis-open": d3_svg_lineBasisOpen,
"basis-closed": d3_svg_lineBasisClosed,
"bundle": d3_svg_lineBundle,
"cardinal": d3_svg_lineCardinal,
"cardinal-open": d3_svg_lineCardinalOpen,
"cardinal-closed": d3_svg_lineCardinalClosed,
"monotone": d3_svg_lineMonotone
});
// Linear interpolation; generates "L" commands.
function d3_svg_lineLinear(points) {
var i = 0,
n = points.length,
p = points[0],
path = [p[0], ",", p[1]];
while (++i < n) path.push("L", (p = points[i])[0], ",", p[1]);
return path.join("");
}
// Step interpolation; generates "H" and "V" commands.
function d3_svg_lineStepBefore(points) {
var i = 0,
n = points.length,
p = points[0],
path = [p[0], ",", p[1]];
while (++i < n) path.push("V", (p = points[i])[1], "H", p[0]);
return path.join("");
}
// Step interpolation; generates "H" and "V" commands.
function d3_svg_lineStepAfter(points) {
var i = 0,
n = points.length,
p = points[0],
path = [p[0], ",", p[1]];
while (++i < n) path.push("H", (p = points[i])[0], "V", p[1]);
return path.join("");
}
// Open cardinal spline interpolation; generates "C" commands.
function d3_svg_lineCardinalOpen(points, tension) {
return points.length < 4
? d3_svg_lineLinear(points)
: points[1] + d3_svg_lineHermite(points.slice(1, points.length - 1),
d3_svg_lineCardinalTangents(points, tension));
}
// Closed cardinal spline interpolation; generates "C" commands.
function d3_svg_lineCardinalClosed(points, tension) {
return points.length < 3
? d3_svg_lineLinear(points)
: points[0] + d3_svg_lineHermite((points.push(points[0]), points),
d3_svg_lineCardinalTangents([points[points.length - 2]]
.concat(points, [points[1]]), tension));
}
// Cardinal spline interpolation; generates "C" commands.
function d3_svg_lineCardinal(points, tension, closed) {
return points.length < 3
? d3_svg_lineLinear(points)
: points[0] + d3_svg_lineHermite(points,
d3_svg_lineCardinalTangents(points, tension));
}
// Hermite spline construction; generates "C" commands.
function d3_svg_lineHermite(points, tangents) {
if (tangents.length < 1
|| (points.length != tangents.length
&& points.length != tangents.length + 2)) {
return d3_svg_lineLinear(points);
}
var quad = points.length != tangents.length,
path = "",
p0 = points[0],
p = points[1],
t0 = tangents[0],
t = t0,
pi = 1;
if (quad) {
path += "Q" + (p[0] - t0[0] * 2 / 3) + "," + (p[1] - t0[1] * 2 / 3)
+ "," + p[0] + "," + p[1];
p0 = points[1];
pi = 2;
}
if (tangents.length > 1) {
t = tangents[1];
p = points[pi];
pi++;
path += "C" + (p0[0] + t0[0]) + "," + (p0[1] + t0[1])
+ "," + (p[0] - t[0]) + "," + (p[1] - t[1])
+ "," + p[0] + "," + p[1];
for (var i = 2; i < tangents.length; i++, pi++) {
p = points[pi];
t = tangents[i];
path += "S" + (p[0] - t[0]) + "," + (p[1] - t[1])
+ "," + p[0] + "," + p[1];
}
}
if (quad) {
var lp = points[pi];
path += "Q" + (p[0] + t[0] * 2 / 3) + "," + (p[1] + t[1] * 2 / 3)
+ "," + lp[0] + "," + lp[1];
}
return path;
}
// Generates tangents for a cardinal spline.
function d3_svg_lineCardinalTangents(points, tension) {
var tangents = [],
a = (1 - tension) / 2,
p0,
p1 = points[0],
p2 = points[1],
i = 1,
n = points.length;
while (++i < n) {
p0 = p1;
p1 = p2;
p2 = points[i];
tangents.push([a * (p2[0] - p0[0]), a * (p2[1] - p0[1])]);
}
return tangents;
}
// B-spline interpolation; generates "C" commands.
function d3_svg_lineBasis(points) {
if (points.length < 3) return d3_svg_lineLinear(points);
var i = 1,
n = points.length,
pi = points[0],
x0 = pi[0],
y0 = pi[1],
px = [x0, x0, x0, (pi = points[1])[0]],
py = [y0, y0, y0, pi[1]],
path = [x0, ",", y0];
d3_svg_lineBasisBezier(path, px, py);
while (++i < n) {
pi = points[i];
px.shift(); px.push(pi[0]);
py.shift(); py.push(pi[1]);
d3_svg_lineBasisBezier(path, px, py);
}
i = -1;
while (++i < 2) {
px.shift(); px.push(pi[0]);
py.shift(); py.push(pi[1]);
d3_svg_lineBasisBezier(path, px, py);
}
return path.join("");
}
// Open B-spline interpolation; generates "C" commands.
function d3_svg_lineBasisOpen(points) {
if (points.length < 4) return d3_svg_lineLinear(points);
var path = [],
i = -1,
n = points.length,
pi,
px = [0],
py = [0];
while (++i < 3) {
pi = points[i];
px.push(pi[0]);
py.push(pi[1]);
}
path.push(d3_svg_lineDot4(d3_svg_lineBasisBezier3, px)
+ "," + d3_svg_lineDot4(d3_svg_lineBasisBezier3, py));
--i; while (++i < n) {
pi = points[i];
px.shift(); px.push(pi[0]);
py.shift(); py.push(pi[1]);
d3_svg_lineBasisBezier(path, px, py);
}
return path.join("");
}
// Closed B-spline interpolation; generates "C" commands.
function d3_svg_lineBasisClosed(points) {
var path,
i = -1,
n = points.length,
m = n + 4,
pi,
px = [],
py = [];
while (++i < 4) {
pi = points[i % n];
px.push(pi[0]);
py.push(pi[1]);
}
path = [
d3_svg_lineDot4(d3_svg_lineBasisBezier3, px), ",",
d3_svg_lineDot4(d3_svg_lineBasisBezier3, py)
];
--i; while (++i < m) {
pi = points[i % n];
px.shift(); px.push(pi[0]);
py.shift(); py.push(pi[1]);
d3_svg_lineBasisBezier(path, px, py);
}
return path.join("");
}
function d3_svg_lineBundle(points, tension) {
var n = points.length - 1,
x0 = points[0][0],
y0 = points[0][1],
dx = points[n][0] - x0,
dy = points[n][1] - y0,
i = -1,
p,
t;
while (++i <= n) {
p = points[i];
t = i / n;
p[0] = tension * p[0] + (1 - tension) * (x0 + t * dx);
p[1] = tension * p[1] + (1 - tension) * (y0 + t * dy);
}
return d3_svg_lineBasis(points);
}
// Returns the dot product of the given four-element vectors.
function d3_svg_lineDot4(a, b) {
return a[0] * b[0] + a[1] * b[1] + a[2] * b[2] + a[3] * b[3];
}
// Matrix to transform basis (b-spline) control points to bezier
// control points. Derived from FvD 11.2.8.
var d3_svg_lineBasisBezier1 = [0, 2/3, 1/3, 0],
d3_svg_lineBasisBezier2 = [0, 1/3, 2/3, 0],
d3_svg_lineBasisBezier3 = [0, 1/6, 2/3, 1/6];
// Pushes a "C" Bézier curve onto the specified path array, given the
// two specified four-element arrays which define the control points.
function d3_svg_lineBasisBezier(path, x, y) {
path.push(
"C", d3_svg_lineDot4(d3_svg_lineBasisBezier1, x),
",", d3_svg_lineDot4(d3_svg_lineBasisBezier1, y),
",", d3_svg_lineDot4(d3_svg_lineBasisBezier2, x),
",", d3_svg_lineDot4(d3_svg_lineBasisBezier2, y),
",", d3_svg_lineDot4(d3_svg_lineBasisBezier3, x),
",", d3_svg_lineDot4(d3_svg_lineBasisBezier3, y));
}
// Computes the slope from points p0 to p1.
function d3_svg_lineSlope(p0, p1) {
return (p1[1] - p0[1]) / (p1[0] - p0[0]);
}
// Compute three-point differences for the given points.
// http://en.wikipedia.org/wiki/Cubic_Hermite_spline#Finite_difference
function d3_svg_lineFiniteDifferences(points) {
var i = 0,
j = points.length - 1,
m = [],
p0 = points[0],
p1 = points[1],
d = m[0] = d3_svg_lineSlope(p0, p1);
while (++i < j) {
m[i] = d + (d = d3_svg_lineSlope(p0 = p1, p1 = points[i + 1]));
}
m[i] = d;
return m;
}
// Interpolates the given points using Fritsch-Carlson Monotone cubic Hermite
// interpolation. Returns an array of tangent vectors. For details, see
// http://en.wikipedia.org/wiki/Monotone_cubic_interpolation
function d3_svg_lineMonotoneTangents(points) {
var tangents = [],
d,
a,
b,
s,
m = d3_svg_lineFiniteDifferences(points),
i = -1,
j = points.length - 1;
// The first two steps are done by computing finite-differences:
// 1. Compute the slopes of the secant lines between successive points.
// 2. Initialize the tangents at every point as the average of the secants.
// Then, for each segment…
while (++i < j) {
d = d3_svg_lineSlope(points[i], points[i + 1]);
// 3. If two successive yk = y{k + 1} are equal (i.e., d is zero), then set
// mk = m{k + 1} = 0 as the spline connecting these points must be flat to
// preserve monotonicity. Ignore step 4 and 5 for those k.
if (Math.abs(d) < 1e-6) {
m[i] = m[i + 1] = 0;
} else {
// 4. Let ak = mk / dk and bk = m{k + 1} / dk.
a = m[i] / d;
b = m[i + 1] / d;
// 5. Prevent overshoot and ensure monotonicity by restricting the
// magnitude of vector <ak, bk> to a circle of radius 3.
s = a * a + b * b;
if (s > 9) {
s = d * 3 / Math.sqrt(s);
m[i] = s * a;
m[i + 1] = s * b;
}
}
}
// Compute the normalized tangent vector from the slopes. Note that if x is
// not monotonic, it's possible that the slope will be infinite, so we protect
// against NaN by setting the coordinate to zero.
i = -1; while (++i <= j) {
s = (points[Math.min(j, i + 1)][0] - points[Math.max(0, i - 1)][0]) / (6 * (1 + m[i] * m[i]));
tangents.push([s || 0, m[i] * s || 0]);
}
return tangents;
}
function d3_svg_lineMonotone(points) {
return points.length < 3
? d3_svg_lineLinear(points)
: points[0] + d3_svg_lineHermite(points, d3_svg_lineMonotoneTangents(points));
}
d3.svg.line.radial = function() {
var line = d3_svg_line(d3_svg_lineRadial);
line.radius = line.x, delete line.x;
line.angle = line.y, delete line.y;
return line;
};
function d3_svg_lineRadial(points) {
var point,
i = -1,
n = points.length,
r,
a;
while (++i < n) {
point = points[i];
r = point[0];
a = point[1] + d3_svg_arcOffset;
point[0] = r * Math.cos(a);
point[1] = r * Math.sin(a);
}
return points;
}
function d3_svg_area(projection) {
var x0 = d3_svg_lineX,
x1 = d3_svg_lineX,
y0 = 0,
y1 = d3_svg_lineY,
defined = d3_true,
interpolate = d3_svg_lineInterpolatorDefault,
i0 = d3_svg_lineLinear,
i1 = d3_svg_lineLinear,
L = "L",
tension = .7;
function area(data) {
var segments = [],
points0 = [],
points1 = [],
i = -1,
n = data.length,
d,
fx0 = d3_functor(x0),
fy0 = d3_functor(y0),
fx1 = x0 === x1 ? function() { return x; } : d3_functor(x1),
fy1 = y0 === y1 ? function() { return y; } : d3_functor(y1),
x,
y;
function segment() {
segments.push("M", i0(projection(points1), tension),
L, i1(projection(points0.reverse()), tension),
"Z");
}
while (++i < n) {
if (defined.call(this, d = data[i], i)) {
points0.push([x = +fx0.call(this, d, i), y = +fy0.call(this, d, i)]);
points1.push([+fx1.call(this, d, i), +fy1.call(this, d, i)]);
} else if (points0.length) {
segment();
points0 = [];
points1 = [];
}
}
if (points0.length) segment();
return segments.length ? segments.join("") : null;
}
area.x = function(_) {
if (!arguments.length) return x1;
x0 = x1 = _;
return area;
};
area.x0 = function(_) {
if (!arguments.length) return x0;
x0 = _;
return area;
};
area.x1 = function(_) {
if (!arguments.length) return x1;
x1 = _;
return area;
};
area.y = function(_) {
if (!arguments.length) return y1;
y0 = y1 = _;
return area;
};
area.y0 = function(_) {
if (!arguments.length) return y0;
y0 = _;
return area;
};
area.y1 = function(_) {
if (!arguments.length) return y1;
y1 = _;
return area;
};
area.defined = function(_) {
if (!arguments.length) return defined;
defined = _;
return area;
};
area.interpolate = function(_) {
if (!arguments.length) return interpolate;
if (!d3_svg_lineInterpolators.has(_ += "")) _ = d3_svg_lineInterpolatorDefault;
i0 = d3_svg_lineInterpolators.get(interpolate = _);
i1 = i0.reverse || i0;
L = /-closed$/.test(_) ? "M" : "L";
return area;
};
area.tension = function(_) {
if (!arguments.length) return tension;
tension = _;
return area;
};
return area;
}
d3_svg_lineStepBefore.reverse = d3_svg_lineStepAfter;
d3_svg_lineStepAfter.reverse = d3_svg_lineStepBefore;
d3.svg.area = function() {
return d3_svg_area(Object);
};
d3.svg.area.radial = function() {
var area = d3_svg_area(d3_svg_lineRadial);
area.radius = area.x, delete area.x;
area.innerRadius = area.x0, delete area.x0;
area.outerRadius = area.x1, delete area.x1;
area.angle = area.y, delete area.y;
area.startAngle = area.y0, delete area.y0;
area.endAngle = area.y1, delete area.y1;
return area;
};
d3.svg.chord = function() {
var source = d3_svg_chordSource,
target = d3_svg_chordTarget,
radius = d3_svg_chordRadius,
startAngle = d3_svg_arcStartAngle,
endAngle = d3_svg_arcEndAngle;
// TODO Allow control point to be customized.
function chord(d, i) {
var s = subgroup(this, source, d, i),
t = subgroup(this, target, d, i);
return "M" + s.p0
+ arc(s.r, s.p1, s.a1 - s.a0) + (equals(s, t)
? curve(s.r, s.p1, s.r, s.p0)
: curve(s.r, s.p1, t.r, t.p0)
+ arc(t.r, t.p1, t.a1 - t.a0)
+ curve(t.r, t.p1, s.r, s.p0))
+ "Z";
}
function subgroup(self, f, d, i) {
var subgroup = f.call(self, d, i),
r = radius.call(self, subgroup, i),
a0 = startAngle.call(self, subgroup, i) + d3_svg_arcOffset,
a1 = endAngle.call(self, subgroup, i) + d3_svg_arcOffset;
return {
r: r,
a0: a0,
a1: a1,
p0: [r * Math.cos(a0), r * Math.sin(a0)],
p1: [r * Math.cos(a1), r * Math.sin(a1)]
};
}
function equals(a, b) {
return a.a0 == b.a0 && a.a1 == b.a1;
}
function arc(r, p, a) {
return "A" + r + "," + r + " 0 " + +(a > Math.PI) + ",1 " + p;
}
function curve(r0, p0, r1, p1) {
return "Q 0,0 " + p1;
}
chord.radius = function(v) {
if (!arguments.length) return radius;
radius = d3_functor(v);
return chord;
};
chord.source = function(v) {
if (!arguments.length) return source;
source = d3_functor(v);
return chord;
};
chord.target = function(v) {
if (!arguments.length) return target;
target = d3_functor(v);
return chord;
};
chord.startAngle = function(v) {
if (!arguments.length) return startAngle;
startAngle = d3_functor(v);
return chord;
};
chord.endAngle = function(v) {
if (!arguments.length) return endAngle;
endAngle = d3_functor(v);
return chord;
};
return chord;
};
function d3_svg_chordSource(d) {
return d.source;
}
function d3_svg_chordTarget(d) {
return d.target;
}
function d3_svg_chordRadius(d) {
return d.radius;
}
function d3_svg_chordStartAngle(d) {
return d.startAngle;
}
function d3_svg_chordEndAngle(d) {
return d.endAngle;
}
d3.svg.diagonal = function() {
var source = d3_svg_chordSource,
target = d3_svg_chordTarget,
projection = d3_svg_diagonalProjection;
function diagonal(d, i) {
var p0 = source.call(this, d, i),
p3 = target.call(this, d, i),
m = (p0.y + p3.y) / 2,
p = [p0, {x: p0.x, y: m}, {x: p3.x, y: m}, p3];
p = p.map(projection);
return "M" + p[0] + "C" + p[1] + " " + p[2] + " " + p[3];
}
diagonal.source = function(x) {
if (!arguments.length) return source;
source = d3_functor(x);
return diagonal;
};
diagonal.target = function(x) {
if (!arguments.length) return target;
target = d3_functor(x);
return diagonal;
};
diagonal.projection = function(x) {
if (!arguments.length) return projection;
projection = x;
return diagonal;
};
return diagonal;
};
function d3_svg_diagonalProjection(d) {
return [d.x, d.y];
}
d3.svg.diagonal.radial = function() {
var diagonal = d3.svg.diagonal(),
projection = d3_svg_diagonalProjection,
projection_ = diagonal.projection;
diagonal.projection = function(x) {
return arguments.length
? projection_(d3_svg_diagonalRadialProjection(projection = x))
: projection;
};
return diagonal;
};
function d3_svg_diagonalRadialProjection(projection) {
return function() {
var d = projection.apply(this, arguments),
r = d[0],
a = d[1] + d3_svg_arcOffset;
return [r * Math.cos(a), r * Math.sin(a)];
};
}
d3.svg.mouse = d3.mouse;
d3.svg.touches = d3.touches;
d3.svg.symbol = function() {
var type = d3_svg_symbolType,
size = d3_svg_symbolSize;
function symbol(d, i) {
return (d3_svg_symbols.get(type.call(this, d, i))
|| d3_svg_symbolCircle)
(size.call(this, d, i));
}
symbol.type = function(x) {
if (!arguments.length) return type;
type = d3_functor(x);
return symbol;
};
// size of symbol in square pixels
symbol.size = function(x) {
if (!arguments.length) return size;
size = d3_functor(x);
return symbol;
};
return symbol;
};
function d3_svg_symbolSize() {
return 64;
}
function d3_svg_symbolType() {
return "circle";
}
function d3_svg_symbolCircle(size) {
var r = Math.sqrt(size / Math.PI);
return "M0," + r
+ "A" + r + "," + r + " 0 1,1 0," + (-r)
+ "A" + r + "," + r + " 0 1,1 0," + r
+ "Z";
}
// TODO cross-diagonal?
var d3_svg_symbols = d3.map({
"circle": d3_svg_symbolCircle,
"cross": function(size) {
var r = Math.sqrt(size / 5) / 2;
return "M" + -3 * r + "," + -r
+ "H" + -r
+ "V" + -3 * r
+ "H" + r
+ "V" + -r
+ "H" + 3 * r
+ "V" + r
+ "H" + r
+ "V" + 3 * r
+ "H" + -r
+ "V" + r
+ "H" + -3 * r
+ "Z";
},
"diamond": function(size) {
var ry = Math.sqrt(size / (2 * d3_svg_symbolTan30)),
rx = ry * d3_svg_symbolTan30;
return "M0," + -ry
+ "L" + rx + ",0"
+ " 0," + ry
+ " " + -rx + ",0"
+ "Z";
},
"square": function(size) {
var r = Math.sqrt(size) / 2;
return "M" + -r + "," + -r
+ "L" + r + "," + -r
+ " " + r + "," + r
+ " " + -r + "," + r
+ "Z";
},
"triangle-down": function(size) {
var rx = Math.sqrt(size / d3_svg_symbolSqrt3),
ry = rx * d3_svg_symbolSqrt3 / 2;
return "M0," + ry
+ "L" + rx +"," + -ry
+ " " + -rx + "," + -ry
+ "Z";
},
"triangle-up": function(size) {
var rx = Math.sqrt(size / d3_svg_symbolSqrt3),
ry = rx * d3_svg_symbolSqrt3 / 2;
return "M0," + -ry
+ "L" + rx +"," + ry
+ " " + -rx + "," + ry
+ "Z";
}
});
d3.svg.symbolTypes = d3_svg_symbols.keys();
var d3_svg_symbolSqrt3 = Math.sqrt(3),
d3_svg_symbolTan30 = Math.tan(30 * Math.PI / 180);
d3.svg.axis = function() {
var scale = d3.scale.linear(),
orient = "bottom",
tickMajorSize = 6,
tickMinorSize = 6,
tickEndSize = 6,
tickPadding = 3,
tickArguments_ = [10],
tickValues = null,
tickFormat_,
tickSubdivide = 0;
function axis(g) {
g.each(function() {
var g = d3.select(this);
// Ticks, or domain values for ordinal scales.
var ticks = tickValues == null ? (scale.ticks ? scale.ticks.apply(scale, tickArguments_) : scale.domain()) : tickValues,
tickFormat = tickFormat_ == null ? (scale.tickFormat ? scale.tickFormat.apply(scale, tickArguments_) : String) : tickFormat_;
// Minor ticks.
var subticks = d3_svg_axisSubdivide(scale, ticks, tickSubdivide),
subtick = g.selectAll(".minor").data(subticks, String),
subtickEnter = subtick.enter().insert("line", "g").attr("class", "tick minor").style("opacity", 1e-6),
subtickExit = d3.transition(subtick.exit()).style("opacity", 1e-6).remove(),
subtickUpdate = d3.transition(subtick).style("opacity", 1);
// Major ticks.
var tick = g.selectAll("g").data(ticks, String),
tickEnter = tick.enter().insert("g", "path").style("opacity", 1e-6),
tickExit = d3.transition(tick.exit()).style("opacity", 1e-6).remove(),
tickUpdate = d3.transition(tick).style("opacity", 1),
tickTransform;
// Domain.
var range = d3_scaleRange(scale),
path = g.selectAll(".domain").data([0]),
pathEnter = path.enter().append("path").attr("class", "domain"),
pathUpdate = d3.transition(path);
// Stash a snapshot of the new scale, and retrieve the old snapshot.
var scale1 = scale.copy(),
scale0 = this.__chart__ || scale1;
this.__chart__ = scale1;
tickEnter.append("line").attr("class", "tick");
tickEnter.append("text");
tickUpdate.select("text").text(tickFormat);
switch (orient) {
case "bottom": {
tickTransform = d3_svg_axisX;
subtickEnter.attr("y2", tickMinorSize);
subtickUpdate.attr("x2", 0).attr("y2", tickMinorSize);
tickEnter.select("line").attr("y2", tickMajorSize);
tickEnter.select("text").attr("y", Math.max(tickMajorSize, 0) + tickPadding);
tickUpdate.select("line").attr("x2", 0).attr("y2", tickMajorSize);
tickUpdate.select("text").attr("x", 0).attr("y", Math.max(tickMajorSize, 0) + tickPadding).attr("dy", ".71em").attr("text-anchor", "middle");
pathUpdate.attr("d", "M" + range[0] + "," + tickEndSize + "V0H" + range[1] + "V" + tickEndSize);
break;
}
case "top": {
tickTransform = d3_svg_axisX;
subtickEnter.attr("y2", -tickMinorSize);
subtickUpdate.attr("x2", 0).attr("y2", -tickMinorSize);
tickEnter.select("line").attr("y2", -tickMajorSize);
tickEnter.select("text").attr("y", -(Math.max(tickMajorSize, 0) + tickPadding));
tickUpdate.select("line").attr("x2", 0).attr("y2", -tickMajorSize);
tickUpdate.select("text").attr("x", 0).attr("y", -(Math.max(tickMajorSize, 0) + tickPadding)).attr("dy", "0em").attr("text-anchor", "middle");
pathUpdate.attr("d", "M" + range[0] + "," + -tickEndSize + "V0H" + range[1] + "V" + -tickEndSize);
break;
}
case "left": {
tickTransform = d3_svg_axisY;
subtickEnter.attr("x2", -tickMinorSize);
subtickUpdate.attr("x2", -tickMinorSize).attr("y2", 0);
tickEnter.select("line").attr("x2", -tickMajorSize);
tickEnter.select("text").attr("x", -(Math.max(tickMajorSize, 0) + tickPadding));
tickUpdate.select("line").attr("x2", -tickMajorSize).attr("y2", 0);
tickUpdate.select("text").attr("x", -(Math.max(tickMajorSize, 0) + tickPadding)).attr("y", 0).attr("dy", ".32em").attr("text-anchor", "end");
pathUpdate.attr("d", "M" + -tickEndSize + "," + range[0] + "H0V" + range[1] + "H" + -tickEndSize);
break;
}
case "right": {
tickTransform = d3_svg_axisY;
subtickEnter.attr("x2", tickMinorSize);
subtickUpdate.attr("x2", tickMinorSize).attr("y2", 0);
tickEnter.select("line").attr("x2", tickMajorSize);
tickEnter.select("text").attr("x", Math.max(tickMajorSize, 0) + tickPadding);
tickUpdate.select("line").attr("x2", tickMajorSize).attr("y2", 0);
tickUpdate.select("text").attr("x", Math.max(tickMajorSize, 0) + tickPadding).attr("y", 0).attr("dy", ".32em").attr("text-anchor", "start");
pathUpdate.attr("d", "M" + tickEndSize + "," + range[0] + "H0V" + range[1] + "H" + tickEndSize);
break;
}
}
// For quantitative scales:
// - enter new ticks from the old scale
// - exit old ticks to the new scale
if (scale.ticks) {
tickEnter.call(tickTransform, scale0);
tickUpdate.call(tickTransform, scale1);
tickExit.call(tickTransform, scale1);
subtickEnter.call(tickTransform, scale0);
subtickUpdate.call(tickTransform, scale1);
subtickExit.call(tickTransform, scale1);
}
// For ordinal scales:
// - any entering ticks are undefined in the old scale
// - any exiting ticks are undefined in the new scale
// Therefore, we only need to transition updating ticks.
else {
var dx = scale1.rangeBand() / 2, x = function(d) { return scale1(d) + dx; };
tickEnter.call(tickTransform, x);
tickUpdate.call(tickTransform, x);
}
});
}
axis.scale = function(x) {
if (!arguments.length) return scale;
scale = x;
return axis;
};
axis.orient = function(x) {
if (!arguments.length) return orient;
orient = x;
return axis;
};
axis.ticks = function() {
if (!arguments.length) return tickArguments_;
tickArguments_ = arguments;
return axis;
};
axis.tickValues = function(x) {
if (!arguments.length) return tickValues;
tickValues = x;
return axis;
};
axis.tickFormat = function(x) {
if (!arguments.length) return tickFormat_;
tickFormat_ = x;
return axis;
};
axis.tickSize = function(x, y, z) {
if (!arguments.length) return tickMajorSize;
var n = arguments.length - 1;
tickMajorSize = +x;
tickMinorSize = n > 1 ? +y : tickMajorSize;
tickEndSize = n > 0 ? +arguments[n] : tickMajorSize;
return axis;
};
axis.tickPadding = function(x) {
if (!arguments.length) return tickPadding;
tickPadding = +x;
return axis;
};
axis.tickSubdivide = function(x) {
if (!arguments.length) return tickSubdivide;
tickSubdivide = +x;
return axis;
};
return axis;
};
function d3_svg_axisX(selection, x) {
selection.attr("transform", function(d) { return "translate(" + x(d) + ",0)"; });
}
function d3_svg_axisY(selection, y) {
selection.attr("transform", function(d) { return "translate(0," + y(d) + ")"; });
}
function d3_svg_axisSubdivide(scale, ticks, m) {
subticks = [];
if (m && ticks.length > 1) {
var extent = d3_scaleExtent(scale.domain()),
subticks,
i = -1,
n = ticks.length,
d = (ticks[1] - ticks[0]) / ++m,
j,
v;
while (++i < n) {
for (j = m; --j > 0;) {
if ((v = +ticks[i] - j * d) >= extent[0]) {
subticks.push(v);
}
}
}
for (--i, j = 0; ++j < m && (v = +ticks[i] + j * d) < extent[1];) {
subticks.push(v);
}
}
return subticks;
}
d3.svg.brush = function() {
var event = d3_eventDispatch(brush, "brushstart", "brush", "brushend"),
x = null, // x-scale, optional
y = null, // y-scale, optional
resizes = d3_svg_brushResizes[0],
extent = [[0, 0], [0, 0]], // [x0, y0], [x1, y1], in pixels (integers)
extentDomain; // the extent in data space, lazily created
function brush(g) {
g.each(function() {
var g = d3.select(this),
bg = g.selectAll(".background").data([0]),
fg = g.selectAll(".extent").data([0]),
tz = g.selectAll(".resize").data(resizes, String),
e;
// Prepare the brush container for events.
g
.style("pointer-events", "all")
.on("mousedown.brush", brushstart)
.on("touchstart.brush", brushstart);
// An invisible, mouseable area for starting a new brush.
bg.enter().append("rect")
.attr("class", "background")
.style("visibility", "hidden")
.style("cursor", "crosshair");
// The visible brush extent; style this as you like!
fg.enter().append("rect")
.attr("class", "extent")
.style("cursor", "move");
// More invisible rects for resizing the extent.
tz.enter().append("g")
.attr("class", function(d) { return "resize " + d; })
.style("cursor", function(d) { return d3_svg_brushCursor[d]; })
.append("rect")
.attr("x", function(d) { return /[ew]$/.test(d) ? -3 : null; })
.attr("y", function(d) { return /^[ns]/.test(d) ? -3 : null; })
.attr("width", 6)
.attr("height", 6)
.style("visibility", "hidden");
// Show or hide the resizers.
tz.style("display", brush.empty() ? "none" : null);
// Remove any superfluous resizers.
tz.exit().remove();
// Initialize the background to fill the defined range.
// If the range isn't defined, you can post-process.
if (x) {
e = d3_scaleRange(x);
bg.attr("x", e[0]).attr("width", e[1] - e[0]);
redrawX(g);
}
if (y) {
e = d3_scaleRange(y);
bg.attr("y", e[0]).attr("height", e[1] - e[0]);
redrawY(g);
}
redraw(g);
});
}
function redraw(g) {
g.selectAll(".resize").attr("transform", function(d) {
return "translate(" + extent[+/e$/.test(d)][0] + "," + extent[+/^s/.test(d)][1] + ")";
});
}
function redrawX(g) {
g.select(".extent").attr("x", extent[0][0]);
g.selectAll(".extent,.n>rect,.s>rect").attr("width", extent[1][0] - extent[0][0]);
}
function redrawY(g) {
g.select(".extent").attr("y", extent[0][1]);
g.selectAll(".extent,.e>rect,.w>rect").attr("height", extent[1][1] - extent[0][1]);
}
function brushstart() {
var target = this,
eventTarget = d3.select(d3.event.target),
event_ = event.of(target, arguments),
g = d3.select(target),
resizing = eventTarget.datum(),
resizingX = !/^(n|s)$/.test(resizing) && x,
resizingY = !/^(e|w)$/.test(resizing) && y,
dragging = eventTarget.classed("extent"),
center,
origin = mouse(),
offset;
var w = d3.select(window)
.on("mousemove.brush", brushmove)
.on("mouseup.brush", brushend)
.on("touchmove.brush", brushmove)
.on("touchend.brush", brushend)
.on("keydown.brush", keydown)
.on("keyup.brush", keyup);
// If the extent was clicked on, drag rather than brush;
// store the point between the mouse and extent origin instead.
if (dragging) {
origin[0] = extent[0][0] - origin[0];
origin[1] = extent[0][1] - origin[1];
}
// If a resizer was clicked on, record which side is to be resized.
// Also, set the origin to the opposite side.
else if (resizing) {
var ex = +/w$/.test(resizing),
ey = +/^n/.test(resizing);
offset = [extent[1 - ex][0] - origin[0], extent[1 - ey][1] - origin[1]];
origin[0] = extent[ex][0];
origin[1] = extent[ey][1];
}
// If the ALT key is down when starting a brush, the center is at the mouse.
else if (d3.event.altKey) center = origin.slice();
// Propagate the active cursor to the body for the drag duration.
g.style("pointer-events", "none").selectAll(".resize").style("display", null);
d3.select("body").style("cursor", eventTarget.style("cursor"));
// Notify listeners.
event_({type: "brushstart"});
brushmove();
d3_eventCancel();
function mouse() {
var touches = d3.event.changedTouches;
return touches ? d3.touches(target, touches)[0] : d3.mouse(target);
}
function keydown() {
if (d3.event.keyCode == 32) {
if (!dragging) {
center = null;
origin[0] -= extent[1][0];
origin[1] -= extent[1][1];
dragging = 2;
}
d3_eventCancel();
}
}
function keyup() {
if (d3.event.keyCode == 32 && dragging == 2) {
origin[0] += extent[1][0];
origin[1] += extent[1][1];
dragging = 0;
d3_eventCancel();
}
}
function brushmove() {
var point = mouse(),
moved = false;
// Preserve the offset for thick resizers.
if (offset) {
point[0] += offset[0];
point[1] += offset[1];
}
if (!dragging) {
// If needed, determine the center from the current extent.
if (d3.event.altKey) {
if (!center) center = [(extent[0][0] + extent[1][0]) / 2, (extent[0][1] + extent[1][1]) / 2];
// Update the origin, for when the ALT key is released.
origin[0] = extent[+(point[0] < center[0])][0];
origin[1] = extent[+(point[1] < center[1])][1];
}
// When the ALT key is released, we clear the center.
else center = null;
}
// Update the brush extent for each dimension.
if (resizingX && move1(point, x, 0)) {
redrawX(g);
moved = true;
}
if (resizingY && move1(point, y, 1)) {
redrawY(g);
moved = true;
}
// Final redraw and notify listeners.
if (moved) {
redraw(g);
event_({type: "brush", mode: dragging ? "move" : "resize"});
}
}
function move1(point, scale, i) {
var range = d3_scaleRange(scale),
r0 = range[0],
r1 = range[1],
position = origin[i],
size = extent[1][i] - extent[0][i],
min,
max;
// When dragging, reduce the range by the extent size and position.
if (dragging) {
r0 -= position;
r1 -= size + position;
}
// Clamp the point so that the extent fits within the range extent.
min = Math.max(r0, Math.min(r1, point[i]));
// Compute the new extent bounds.
if (dragging) {
max = (min += position) + size;
} else {
// If the ALT key is pressed, then preserve the center of the extent.
if (center) position = Math.max(r0, Math.min(r1, 2 * center[i] - min));
// Compute the min and max of the position and point.
if (position < min) {
max = min;
min = position;
} else {
max = position;
}
}
// Update the stored bounds.
if (extent[0][i] !== min || extent[1][i] !== max) {
extentDomain = null;
extent[0][i] = min;
extent[1][i] = max;
return true;
}
}
function brushend() {
brushmove();
// reset the cursor styles
g.style("pointer-events", "all").selectAll(".resize").style("display", brush.empty() ? "none" : null);
d3.select("body").style("cursor", null);
w .on("mousemove.brush", null)
.on("mouseup.brush", null)
.on("touchmove.brush", null)
.on("touchend.brush", null)
.on("keydown.brush", null)
.on("keyup.brush", null);
event_({type: "brushend"});
d3_eventCancel();
}
}
brush.x = function(z) {
if (!arguments.length) return x;
x = z;
resizes = d3_svg_brushResizes[!x << 1 | !y]; // fore!
return brush;
};
brush.y = function(z) {
if (!arguments.length) return y;
y = z;
resizes = d3_svg_brushResizes[!x << 1 | !y]; // fore!
return brush;
};
brush.extent = function(z) {
var x0, x1, y0, y1, t;
// Invert the pixel extent to data-space.
if (!arguments.length) {
z = extentDomain || extent;
if (x) {
x0 = z[0][0], x1 = z[1][0];
if (!extentDomain) {
x0 = extent[0][0], x1 = extent[1][0];
if (x.invert) x0 = x.invert(x0), x1 = x.invert(x1);
if (x1 < x0) t = x0, x0 = x1, x1 = t;
}
}
if (y) {
y0 = z[0][1], y1 = z[1][1];
if (!extentDomain) {
y0 = extent[0][1], y1 = extent[1][1];
if (y.invert) y0 = y.invert(y0), y1 = y.invert(y1);
if (y1 < y0) t = y0, y0 = y1, y1 = t;
}
}
return x && y ? [[x0, y0], [x1, y1]] : x ? [x0, x1] : y && [y0, y1];
}
// Scale the data-space extent to pixels.
extentDomain = [[0, 0], [0, 0]];
if (x) {
x0 = z[0], x1 = z[1];
if (y) x0 = x0[0], x1 = x1[0];
extentDomain[0][0] = x0, extentDomain[1][0] = x1;
if (x.invert) x0 = x(x0), x1 = x(x1);
if (x1 < x0) t = x0, x0 = x1, x1 = t;
extent[0][0] = x0 | 0, extent[1][0] = x1 | 0;
}
if (y) {
y0 = z[0], y1 = z[1];
if (x) y0 = y0[1], y1 = y1[1];
extentDomain[0][1] = y0, extentDomain[1][1] = y1;
if (y.invert) y0 = y(y0), y1 = y(y1);
if (y1 < y0) t = y0, y0 = y1, y1 = t;
extent[0][1] = y0 | 0, extent[1][1] = y1 | 0;
}
return brush;
};
brush.clear = function() {
extentDomain = null;
extent[0][0] =
extent[0][1] =
extent[1][0] =
extent[1][1] = 0;
return brush;
};
brush.empty = function() {
return (x && extent[0][0] === extent[1][0])
|| (y && extent[0][1] === extent[1][1]);
};
return d3.rebind(brush, event, "on");
};
var d3_svg_brushCursor = {
n: "ns-resize",
e: "ew-resize",
s: "ns-resize",
w: "ew-resize",
nw: "nwse-resize",
ne: "nesw-resize",
se: "nwse-resize",
sw: "nesw-resize"
};
var d3_svg_brushResizes = [
["n", "e", "s", "w", "nw", "ne", "se", "sw"],
["e", "w"],
["n", "s"],
[]
];
d3.behavior = {};
// TODO Track touch points by identifier.
d3.behavior.drag = function() {
var event = d3_eventDispatch(drag, "drag", "dragstart", "dragend"),
origin = null;
function drag() {
this.on("mousedown.drag", mousedown)
.on("touchstart.drag", mousedown);
}
function mousedown() {
var target = this,
event_ = event.of(target, arguments),
eventTarget = d3.event.target,
offset,
origin_ = point(),
moved = 0;
var w = d3.select(window)
.on("mousemove.drag", dragmove)
.on("touchmove.drag", dragmove)
.on("mouseup.drag", dragend, true)
.on("touchend.drag", dragend, true);
if (origin) {
offset = origin.apply(target, arguments);
offset = [offset.x - origin_[0], offset.y - origin_[1]];
} else {
offset = [0, 0];
}
d3_eventCancel();
event_({type: "dragstart"});
function point() {
var p = target.parentNode,
t = d3.event.changedTouches;
return t ? d3.touches(p, t)[0] : d3.mouse(p);
}
function dragmove() {
if (!target.parentNode) return dragend(); // target removed from DOM
var p = point(),
dx = p[0] - origin_[0],
dy = p[1] - origin_[1];
moved |= dx | dy;
origin_ = p;
d3_eventCancel();
event_({type: "drag", x: p[0] + offset[0], y: p[1] + offset[1], dx: dx, dy: dy});
}
function dragend() {
event_({type: "dragend"});
// if moved, prevent the mouseup (and possibly click) from propagating
if (moved) {
d3_eventCancel();
if (d3.event.target === eventTarget) w.on("click.drag", click, true);
}
w .on("mousemove.drag", null)
.on("touchmove.drag", null)
.on("mouseup.drag", null)
.on("touchend.drag", null);
}
// prevent the subsequent click from propagating (e.g., for anchors)
function click() {
d3_eventCancel();
w.on("click.drag", null);
}
}
drag.origin = function(x) {
if (!arguments.length) return origin;
origin = x;
return drag;
};
return d3.rebind(drag, event, "on");
};
d3.behavior.zoom = function() {
var translate = [0, 0],
translate0, // translate when we started zooming (to avoid drift)
scale = 1,
scale0, // scale when we started touching
scaleExtent = d3_behavior_zoomInfinity,
event = d3_eventDispatch(zoom, "zoom"),
x0,
x1,
y0,
y1,
touchtime; // time of last touchstart (to detect double-tap)
function zoom() {
this
.on("mousedown.zoom", mousedown)
.on("mousewheel.zoom", mousewheel)
.on("mousemove.zoom", mousemove)
.on("DOMMouseScroll.zoom", mousewheel)
.on("dblclick.zoom", dblclick)
.on("touchstart.zoom", touchstart)
.on("touchmove.zoom", touchmove)
.on("touchend.zoom", touchstart);
}
zoom.translate = function(x) {
if (!arguments.length) return translate;
translate = x.map(Number);
return zoom;
};
zoom.scale = function(x) {
if (!arguments.length) return scale;
scale = +x;
return zoom;
};
zoom.scaleExtent = function(x) {
if (!arguments.length) return scaleExtent;
scaleExtent = x == null ? d3_behavior_zoomInfinity : x.map(Number);
return zoom;
};
zoom.x = function(z) {
if (!arguments.length) return x1;
x1 = z;
x0 = z.copy();
return zoom;
};
zoom.y = function(z) {
if (!arguments.length) return y1;
y1 = z;
y0 = z.copy();
return zoom;
};
function location(p) {
return [(p[0] - translate[0]) / scale, (p[1] - translate[1]) / scale];
}
function point(l) {
return [l[0] * scale + translate[0], l[1] * scale + translate[1]];
}
function scaleTo(s) {
scale = Math.max(scaleExtent[0], Math.min(scaleExtent[1], s));
}
function translateTo(p, l) {
l = point(l);
translate[0] += p[0] - l[0];
translate[1] += p[1] - l[1];
}
function dispatch(event) {
if (x1) x1.domain(x0.range().map(function(x) { return (x - translate[0]) / scale; }).map(x0.invert));
if (y1) y1.domain(y0.range().map(function(y) { return (y - translate[1]) / scale; }).map(y0.invert));
d3.event.preventDefault();
event({type: "zoom", scale: scale, translate: translate});
}
function mousedown() {
var target = this,
event_ = event.of(target, arguments),
eventTarget = d3.event.target,
moved = 0,
w = d3.select(window).on("mousemove.zoom", mousemove).on("mouseup.zoom", mouseup),
l = location(d3.mouse(target));
window.focus();
d3_eventCancel();
function mousemove() {
moved = 1;
translateTo(d3.mouse(target), l);
dispatch(event_);
}
function mouseup() {
if (moved) d3_eventCancel();
w.on("mousemove.zoom", null).on("mouseup.zoom", null);
if (moved && d3.event.target === eventTarget) w.on("click.zoom", click, true);
}
function click() {
d3_eventCancel();
w.on("click.zoom", null);
}
}
function mousewheel() {
if (!translate0) translate0 = location(d3.mouse(this));
scaleTo(Math.pow(2, d3_behavior_zoomDelta() * .002) * scale);
translateTo(d3.mouse(this), translate0);
dispatch(event.of(this, arguments));
}
function mousemove() {
translate0 = null;
}
function dblclick() {
var p = d3.mouse(this), l = location(p);
scaleTo(d3.event.shiftKey ? scale / 2 : scale * 2);
translateTo(p, l);
dispatch(event.of(this, arguments));
}
function touchstart() {
var touches = d3.touches(this),
now = Date.now();
scale0 = scale;
translate0 = {};
touches.forEach(function(t) { translate0[t.identifier] = location(t); });
d3_eventCancel();
if ((touches.length === 1) && (now - touchtime < 500)) { // dbltap
var p = touches[0], l = location(touches[0]);
scaleTo(scale * 2);
translateTo(p, l);
dispatch(event.of(this, arguments));
}
touchtime = now;
}
function touchmove() {
var touches = d3.touches(this),
p0 = touches[0],
l0 = translate0[p0.identifier];
if (p1 = touches[1]) {
var p1, l1 = translate0[p1.identifier];
p0 = [(p0[0] + p1[0]) / 2, (p0[1] + p1[1]) / 2];
l0 = [(l0[0] + l1[0]) / 2, (l0[1] + l1[1]) / 2];
scaleTo(d3.event.scale * scale0);
}
translateTo(p0, l0);
dispatch(event.of(this, arguments));
}
return d3.rebind(zoom, event, "on");
};
var d3_behavior_zoomDiv, // for interpreting mousewheel events
d3_behavior_zoomInfinity = [0, Infinity]; // default scale extent
function d3_behavior_zoomDelta() {
// mousewheel events are totally broken!
// https://bugs.webkit.org/show_bug.cgi?id=40441
// not only that, but Chrome and Safari differ in re. to acceleration!
if (!d3_behavior_zoomDiv) {
d3_behavior_zoomDiv = d3.select("body").append("div")
.style("visibility", "hidden")
.style("top", 0)
.style("height", 0)
.style("width", 0)
.style("overflow-y", "scroll")
.append("div")
.style("height", "2000px")
.node().parentNode;
}
var e = d3.event, delta;
try {
d3_behavior_zoomDiv.scrollTop = 1000;
d3_behavior_zoomDiv.dispatchEvent(e);
delta = 1000 - d3_behavior_zoomDiv.scrollTop;
} catch (error) {
delta = e.wheelDelta || (-e.detail * 5);
}
return delta;
}
d3.layout = {};
// Implements hierarchical edge bundling using Holten's algorithm. For each
// input link, a path is computed that travels through the tree, up the parent
// hierarchy to the least common ancestor, and then back down to the destination
// node. Each path is simply an array of nodes.
d3.layout.bundle = function() {
return function(links) {
var paths = [],
i = -1,
n = links.length;
while (++i < n) paths.push(d3_layout_bundlePath(links[i]));
return paths;
};
};
function d3_layout_bundlePath(link) {
var start = link.source,
end = link.target,
lca = d3_layout_bundleLeastCommonAncestor(start, end),
points = [start];
while (start !== lca) {
start = start.parent;
points.push(start);
}
var k = points.length;
while (end !== lca) {
points.splice(k, 0, end);
end = end.parent;
}
return points;
}
function d3_layout_bundleAncestors(node) {
var ancestors = [],
parent = node.parent;
while (parent != null) {
ancestors.push(node);
node = parent;
parent = parent.parent;
}
ancestors.push(node);
return ancestors;
}
function d3_layout_bundleLeastCommonAncestor(a, b) {
if (a === b) return a;
var aNodes = d3_layout_bundleAncestors(a),
bNodes = d3_layout_bundleAncestors(b),
aNode = aNodes.pop(),
bNode = bNodes.pop(),
sharedNode = null;
while (aNode === bNode) {
sharedNode = aNode;
aNode = aNodes.pop();
bNode = bNodes.pop();
}
return sharedNode;
}
d3.layout.chord = function() {
var chord = {},
chords,
groups,
matrix,
n,
padding = 0,
sortGroups,
sortSubgroups,
sortChords;
function relayout() {
var subgroups = {},
groupSums = [],
groupIndex = d3.range(n),
subgroupIndex = [],
k,
x,
x0,
i,
j;
chords = [];
groups = [];
// Compute the sum.
k = 0, i = -1; while (++i < n) {
x = 0, j = -1; while (++j < n) {
x += matrix[i][j];
}
groupSums.push(x);
subgroupIndex.push(d3.range(n));
k += x;
}
// Sort groups…
if (sortGroups) {
groupIndex.sort(function(a, b) {
return sortGroups(groupSums[a], groupSums[b]);
});
}
// Sort subgroups…
if (sortSubgroups) {
subgroupIndex.forEach(function(d, i) {
d.sort(function(a, b) {
return sortSubgroups(matrix[i][a], matrix[i][b]);
});
});
}
// Convert the sum to scaling factor for [0, 2pi].
// TODO Allow start and end angle to be specified.
// TODO Allow padding to be specified as percentage?
k = (2 * Math.PI - padding * n) / k;
// Compute the start and end angle for each group and subgroup.
// Note: Opera has a bug reordering object literal properties!
x = 0, i = -1; while (++i < n) {
x0 = x, j = -1; while (++j < n) {
var di = groupIndex[i],
dj = subgroupIndex[di][j],
v = matrix[di][dj],
a0 = x,
a1 = x += v * k;
subgroups[di + "-" + dj] = {
index: di,
subindex: dj,
startAngle: a0,
endAngle: a1,
value: v
};
}
groups[di] = {
index: di,
startAngle: x0,
endAngle: x,
value: (x - x0) / k
};
x += padding;
}
// Generate chords for each (non-empty) subgroup-subgroup link.
i = -1; while (++i < n) {
j = i - 1; while (++j < n) {
var source = subgroups[i + "-" + j],
target = subgroups[j + "-" + i];
if (source.value || target.value) {
chords.push(source.value < target.value
? {source: target, target: source}
: {source: source, target: target});
}
}
}
if (sortChords) resort();
}
function resort() {
chords.sort(function(a, b) {
return sortChords(
(a.source.value + a.target.value) / 2,
(b.source.value + b.target.value) / 2);
});
}
chord.matrix = function(x) {
if (!arguments.length) return matrix;
n = (matrix = x) && matrix.length;
chords = groups = null;
return chord;
};
chord.padding = function(x) {
if (!arguments.length) return padding;
padding = x;
chords = groups = null;
return chord;
};
chord.sortGroups = function(x) {
if (!arguments.length) return sortGroups;
sortGroups = x;
chords = groups = null;
return chord;
};
chord.sortSubgroups = function(x) {
if (!arguments.length) return sortSubgroups;
sortSubgroups = x;
chords = null;
return chord;
};
chord.sortChords = function(x) {
if (!arguments.length) return sortChords;
sortChords = x;
if (chords) resort();
return chord;
};
chord.chords = function() {
if (!chords) relayout();
return chords;
};
chord.groups = function() {
if (!groups) relayout();
return groups;
};
return chord;
};
// A rudimentary force layout using Gauss-Seidel.
d3.layout.force = function() {
var force = {},
event = d3.dispatch("start", "tick", "end"),
size = [1, 1],
drag,
alpha,
friction = .9,
linkDistance = d3_layout_forceLinkDistance,
linkStrength = d3_layout_forceLinkStrength,
charge = -30,
gravity = .1,
theta = .8,
interval,
nodes = [],
links = [],
distances,
strengths,
charges;
function repulse(node) {
return function(quad, x1, y1, x2, y2) {
if (quad.point !== node) {
var dx = quad.cx - node.x,
dy = quad.cy - node.y,
dn = 1 / Math.sqrt(dx * dx + dy * dy);
/* Barnes-Hut criterion. */
if ((x2 - x1) * dn < theta) {
var k = quad.charge * dn * dn;
node.px -= dx * k;
node.py -= dy * k;
return true;
}
if (quad.point && isFinite(dn)) {
var k = quad.pointCharge * dn * dn;
node.px -= dx * k;
node.py -= dy * k;
}
}
return !quad.charge;
};
}
force.tick = function() {
// simulated annealing, basically
if ((alpha *= .99) < .005) {
event.end({type: "end", alpha: alpha = 0});
return true;
}
var n = nodes.length,
m = links.length,
q,
i, // current index
o, // current object
s, // current source
t, // current target
l, // current distance
k, // current force
x, // x-distance
y; // y-distance
// gauss-seidel relaxation for links
for (i = 0; i < m; ++i) {
o = links[i];
s = o.source;
t = o.target;
x = t.x - s.x;
y = t.y - s.y;
if (l = (x * x + y * y)) {
l = alpha * strengths[i] * ((l = Math.sqrt(l)) - distances[i]) / l;
x *= l;
y *= l;
t.x -= x * (k = s.weight / (t.weight + s.weight));
t.y -= y * k;
s.x += x * (k = 1 - k);
s.y += y * k;
}
}
// apply gravity forces
if (k = alpha * gravity) {
x = size[0] / 2;
y = size[1] / 2;
i = -1; if (k) while (++i < n) {
o = nodes[i];
o.x += (x - o.x) * k;
o.y += (y - o.y) * k;
}
}
// compute quadtree center of mass and apply charge forces
if (charge) {
d3_layout_forceAccumulate(q = d3.geom.quadtree(nodes), alpha, charges);
i = -1; while (++i < n) {
if (!(o = nodes[i]).fixed) {
q.visit(repulse(o));
}
}
}
// position verlet integration
i = -1; while (++i < n) {
o = nodes[i];
if (o.fixed) {
o.x = o.px;
o.y = o.py;
} else {
o.x -= (o.px - (o.px = o.x)) * friction;
o.y -= (o.py - (o.py = o.y)) * friction;
}
}
event.tick({type: "tick", alpha: alpha});
};
force.nodes = function(x) {
if (!arguments.length) return nodes;
nodes = x;
return force;
};
force.links = function(x) {
if (!arguments.length) return links;
links = x;
return force;
};
force.size = function(x) {
if (!arguments.length) return size;
size = x;
return force;
};
force.linkDistance = function(x) {
if (!arguments.length) return linkDistance;
linkDistance = d3_functor(x);
return force;
};
// For backwards-compatibility.
force.distance = force.linkDistance;
force.linkStrength = function(x) {
if (!arguments.length) return linkStrength;
linkStrength = d3_functor(x);
return force;
};
force.friction = function(x) {
if (!arguments.length) return friction;
friction = x;
return force;
};
force.charge = function(x) {
if (!arguments.length) return charge;
charge = typeof x === "function" ? x : +x;
return force;
};
force.gravity = function(x) {
if (!arguments.length) return gravity;
gravity = x;
return force;
};
force.theta = function(x) {
if (!arguments.length) return theta;
theta = x;
return force;
};
force.alpha = function(x) {
if (!arguments.length) return alpha;
if (alpha) { // if we're already running
if (x > 0) alpha = x; // we might keep it hot
else alpha = 0; // or, next tick will dispatch "end"
} else if (x > 0) { // otherwise, fire it up!
event.start({type: "start", alpha: alpha = x});
d3.timer(force.tick);
}
return force;
};
force.start = function() {
var i,
j,
n = nodes.length,
m = links.length,
w = size[0],
h = size[1],
neighbors,
o;
for (i = 0; i < n; ++i) {
(o = nodes[i]).index = i;
o.weight = 0;
}
distances = [];
strengths = [];
for (i = 0; i < m; ++i) {
o = links[i];
if (typeof o.source == "number") o.source = nodes[o.source];
if (typeof o.target == "number") o.target = nodes[o.target];
distances[i] = linkDistance.call(this, o, i);
strengths[i] = linkStrength.call(this, o, i);
++o.source.weight;
++o.target.weight;
}
for (i = 0; i < n; ++i) {
o = nodes[i];
if (isNaN(o.x)) o.x = position("x", w);
if (isNaN(o.y)) o.y = position("y", h);
if (isNaN(o.px)) o.px = o.x;
if (isNaN(o.py)) o.py = o.y;
}
charges = [];
if (typeof charge === "function") {
for (i = 0; i < n; ++i) {
charges[i] = +charge.call(this, nodes[i], i);
}
} else {
for (i = 0; i < n; ++i) {
charges[i] = charge;
}
}
// initialize node position based on first neighbor
function position(dimension, size) {
var neighbors = neighbor(i),
j = -1,
m = neighbors.length,
x;
while (++j < m) if (!isNaN(x = neighbors[j][dimension])) return x;
return Math.random() * size;
}
// initialize neighbors lazily
function neighbor() {
if (!neighbors) {
neighbors = [];
for (j = 0; j < n; ++j) {
neighbors[j] = [];
}
for (j = 0; j < m; ++j) {
var o = links[j];
neighbors[o.source.index].push(o.target);
neighbors[o.target.index].push(o.source);
}
}
return neighbors[i];
}
return force.resume();
};
force.resume = function() {
return force.alpha(.1);
};
force.stop = function() {
return force.alpha(0);
};
// use `node.call(force.drag)` to make nodes draggable
force.drag = function() {
if (!drag) drag = d3.behavior.drag()
.origin(d3_identity)
.on("dragstart", dragstart)
.on("drag", d3_layout_forceDrag)
.on("dragend", d3_layout_forceDragEnd);
this.on("mouseover.force", d3_layout_forceDragOver)
.on("mouseout.force", d3_layout_forceDragOut)
.call(drag);
};
function dragstart(d) {
d3_layout_forceDragOver(d3_layout_forceDragNode = d);
d3_layout_forceDragForce = force;
}
return d3.rebind(force, event, "on");
};
var d3_layout_forceDragForce,
d3_layout_forceDragNode;
function d3_layout_forceDragOver(d) {
d.fixed |= 2;
}
function d3_layout_forceDragOut(d) {
if (d !== d3_layout_forceDragNode) d.fixed &= 1;
}
function d3_layout_forceDragEnd() {
d3_layout_forceDragNode.fixed &= 1;
d3_layout_forceDragForce = d3_layout_forceDragNode = null;
}
function d3_layout_forceDrag() {
d3_layout_forceDragNode.px = d3.event.x;
d3_layout_forceDragNode.py = d3.event.y;
d3_layout_forceDragForce.resume(); // restart annealing
}
function d3_layout_forceAccumulate(quad, alpha, charges) {
var cx = 0,
cy = 0;
quad.charge = 0;
if (!quad.leaf) {
var nodes = quad.nodes,
n = nodes.length,
i = -1,
c;
while (++i < n) {
c = nodes[i];
if (c == null) continue;
d3_layout_forceAccumulate(c, alpha, charges);
quad.charge += c.charge;
cx += c.charge * c.cx;
cy += c.charge * c.cy;
}
}
if (quad.point) {
// jitter internal nodes that are coincident
if (!quad.leaf) {
quad.point.x += Math.random() - .5;
quad.point.y += Math.random() - .5;
}
var k = alpha * charges[quad.point.index];
quad.charge += quad.pointCharge = k;
cx += k * quad.point.x;
cy += k * quad.point.y;
}
quad.cx = cx / quad.charge;
quad.cy = cy / quad.charge;
}
function d3_layout_forceLinkDistance(link) {
return 20;
}
function d3_layout_forceLinkStrength(link) {
return 1;
}
d3.layout.partition = function() {
var hierarchy = d3.layout.hierarchy(),
size = [1, 1]; // width, height
function position(node, x, dx, dy) {
var children = node.children;
node.x = x;
node.y = node.depth * dy;
node.dx = dx;
node.dy = dy;
if (children && (n = children.length)) {
var i = -1,
n,
c,
d;
dx = node.value ? dx / node.value : 0;
while (++i < n) {
position(c = children[i], x, d = c.value * dx, dy);
x += d;
}
}
}
function depth(node) {
var children = node.children,
d = 0;
if (children && (n = children.length)) {
var i = -1,
n;
while (++i < n) d = Math.max(d, depth(children[i]));
}
return 1 + d;
}
function partition(d, i) {
var nodes = hierarchy.call(this, d, i);
position(nodes[0], 0, size[0], size[1] / depth(nodes[0]));
return nodes;
}
partition.size = function(x) {
if (!arguments.length) return size;
size = x;
return partition;
};
return d3_layout_hierarchyRebind(partition, hierarchy);
};
d3.layout.pie = function() {
var value = Number,
sort = d3_layout_pieSortByValue,
startAngle = 0,
endAngle = 2 * Math.PI;
function pie(data, i) {
// Compute the numeric values for each data element.
var values = data.map(function(d, i) { return +value.call(pie, d, i); });
// Compute the start angle.
var a = +(typeof startAngle === "function"
? startAngle.apply(this, arguments)
: startAngle);
// Compute the angular scale factor: from value to radians.
var k = ((typeof endAngle === "function"
? endAngle.apply(this, arguments)
: endAngle) - startAngle)
/ d3.sum(values);
// Optionally sort the data.
var index = d3.range(data.length);
if (sort != null) index.sort(sort === d3_layout_pieSortByValue
? function(i, j) { return values[j] - values[i]; }
: function(i, j) { return sort(data[i], data[j]); });
// Compute the arcs!
// They are stored in the original data's order.
var arcs = [];
index.forEach(function(i) {
arcs[i] = {
data: data[i],
value: d = values[i],
startAngle: a,
endAngle: a += d * k
};
});
return arcs;
}
/**
* Specifies the value function *x*, which returns a nonnegative numeric value
* for each datum. The default value function is `Number`. The value function
* is passed two arguments: the current datum and the current index.
*/
pie.value = function(x) {
if (!arguments.length) return value;
value = x;
return pie;
};
/**
* Specifies a sort comparison operator *x*. The comparator is passed two data
* elements from the data array, a and b; it returns a negative value if a is
* less than b, a positive value if a is greater than b, and zero if a equals
* b.
*/
pie.sort = function(x) {
if (!arguments.length) return sort;
sort = x;
return pie;
};
/**
* Specifies the overall start angle of the pie chart. Defaults to 0. The
* start angle can be specified either as a constant or as a function; in the
* case of a function, it is evaluated once per array (as opposed to per
* element).
*/
pie.startAngle = function(x) {
if (!arguments.length) return startAngle;
startAngle = x;
return pie;
};
/**
* Specifies the overall end angle of the pie chart. Defaults to 2Ï€. The
* end angle can be specified either as a constant or as a function; in the
* case of a function, it is evaluated once per array (as opposed to per
* element).
*/
pie.endAngle = function(x) {
if (!arguments.length) return endAngle;
endAngle = x;
return pie;
};
return pie;
};
var d3_layout_pieSortByValue = {};
// data is two-dimensional array of x,y; we populate y0
d3.layout.stack = function() {
var values = d3_identity,
order = d3_layout_stackOrderDefault,
offset = d3_layout_stackOffsetZero,
out = d3_layout_stackOut,
x = d3_layout_stackX,
y = d3_layout_stackY;
function stack(data, index) {
// Convert series to canonical two-dimensional representation.
var series = data.map(function(d, i) {
return values.call(stack, d, i);
});
// Convert each series to canonical [[x,y]] representation.
var points = series.map(function(d, i) {
return d.map(function(v, i) {
return [x.call(stack, v, i), y.call(stack, v, i)];
});
});
// Compute the order of series, and permute them.
var orders = order.call(stack, points, index);
series = d3.permute(series, orders);
points = d3.permute(points, orders);
// Compute the baseline…
var offsets = offset.call(stack, points, index);
// And propagate it to other series.
var n = series.length,
m = series[0].length,
i,
j,
o;
for (j = 0; j < m; ++j) {
out.call(stack, series[0][j], o = offsets[j], points[0][j][1]);
for (i = 1; i < n; ++i) {
out.call(stack, series[i][j], o += points[i - 1][j][1], points[i][j][1]);
}
}
return data;
}
stack.values = function(x) {
if (!arguments.length) return values;
values = x;
return stack;
};
stack.order = function(x) {
if (!arguments.length) return order;
order = typeof x === "function" ? x : d3_layout_stackOrders.get(x) || d3_layout_stackOrderDefault;
return stack;
};
stack.offset = function(x) {
if (!arguments.length) return offset;
offset = typeof x === "function" ? x : d3_layout_stackOffsets.get(x) || d3_layout_stackOffsetZero;
return stack;
};
stack.x = function(z) {
if (!arguments.length) return x;
x = z;
return stack;
};
stack.y = function(z) {
if (!arguments.length) return y;
y = z;
return stack;
};
stack.out = function(z) {
if (!arguments.length) return out;
out = z;
return stack;
};
return stack;
}
function d3_layout_stackX(d) {
return d.x;
}
function d3_layout_stackY(d) {
return d.y;
}
function d3_layout_stackOut(d, y0, y) {
d.y0 = y0;
d.y = y;
}
var d3_layout_stackOrders = d3.map({
"inside-out": function(data) {
var n = data.length,
i,
j,
max = data.map(d3_layout_stackMaxIndex),
sums = data.map(d3_layout_stackReduceSum),
index = d3.range(n).sort(function(a, b) { return max[a] - max[b]; }),
top = 0,
bottom = 0,
tops = [],
bottoms = [];
for (i = 0; i < n; ++i) {
j = index[i];
if (top < bottom) {
top += sums[j];
tops.push(j);
} else {
bottom += sums[j];
bottoms.push(j);
}
}
return bottoms.reverse().concat(tops);
},
"reverse": function(data) {
return d3.range(data.length).reverse();
},
"default": d3_layout_stackOrderDefault
});
var d3_layout_stackOffsets = d3.map({
"silhouette": function(data) {
var n = data.length,
m = data[0].length,
sums = [],
max = 0,
i,
j,
o,
y0 = [];
for (j = 0; j < m; ++j) {
for (i = 0, o = 0; i < n; i++) o += data[i][j][1];
if (o > max) max = o;
sums.push(o);
}
for (j = 0; j < m; ++j) {
y0[j] = (max - sums[j]) / 2;
}
return y0;
},
"wiggle": function(data) {
var n = data.length,
x = data[0],
m = x.length,
max = 0,
i,
j,
k,
s1,
s2,
s3,
dx,
o,
o0,
y0 = [];
y0[0] = o = o0 = 0;
for (j = 1; j < m; ++j) {
for (i = 0, s1 = 0; i < n; ++i) s1 += data[i][j][1];
for (i = 0, s2 = 0, dx = x[j][0] - x[j - 1][0]; i < n; ++i) {
for (k = 0, s3 = (data[i][j][1] - data[i][j - 1][1]) / (2 * dx); k < i; ++k) {
s3 += (data[k][j][1] - data[k][j - 1][1]) / dx;
}
s2 += s3 * data[i][j][1];
}
y0[j] = o -= s1 ? s2 / s1 * dx : 0;
if (o < o0) o0 = o;
}
for (j = 0; j < m; ++j) y0[j] -= o0;
return y0;
},
"expand": function(data) {
var n = data.length,
m = data[0].length,
k = 1 / n,
i,
j,
o,
y0 = [];
for (j = 0; j < m; ++j) {
for (i = 0, o = 0; i < n; i++) o += data[i][j][1];
if (o) for (i = 0; i < n; i++) data[i][j][1] /= o;
else for (i = 0; i < n; i++) data[i][j][1] = k;
}
for (j = 0; j < m; ++j) y0[j] = 0;
return y0;
},
"zero": d3_layout_stackOffsetZero
});
function d3_layout_stackOrderDefault(data) {
return d3.range(data.length);
}
function d3_layout_stackOffsetZero(data) {
var j = -1,
m = data[0].length,
y0 = [];
while (++j < m) y0[j] = 0;
return y0;
}
function d3_layout_stackMaxIndex(array) {
var i = 1,
j = 0,
v = array[0][1],
k,
n = array.length;
for (; i < n; ++i) {
if ((k = array[i][1]) > v) {
j = i;
v = k;
}
}
return j;
}
function d3_layout_stackReduceSum(d) {
return d.reduce(d3_layout_stackSum, 0);
}
function d3_layout_stackSum(p, d) {
return p + d[1];
}
d3.layout.histogram = function() {
var frequency = true,
valuer = Number,
ranger = d3_layout_histogramRange,
binner = d3_layout_histogramBinSturges;
function histogram(data, i) {
var bins = [],
values = data.map(valuer, this),
range = ranger.call(this, values, i),
thresholds = binner.call(this, range, values, i),
bin,
i = -1,
n = values.length,
m = thresholds.length - 1,
k = frequency ? 1 : 1 / n,
x;
// Initialize the bins.
while (++i < m) {
bin = bins[i] = [];
bin.dx = thresholds[i + 1] - (bin.x = thresholds[i]);
bin.y = 0;
}
// Fill the bins, ignoring values outside the range.
if (m > 0) {
i = -1; while(++i < n) {
x = values[i];
if ((x >= range[0]) && (x <= range[1])) {
bin = bins[d3.bisect(thresholds, x, 1, m) - 1];
bin.y += k;
bin.push(data[i]);
}
}
}
return bins;
}
// Specifies how to extract a value from the associated data. The default
// value function is `Number`, which is equivalent to the identity function.
histogram.value = function(x) {
if (!arguments.length) return valuer;
valuer = x;
return histogram;
};
// Specifies the range of the histogram. Values outside the specified range
// will be ignored. The argument `x` may be specified either as a two-element
// array representing the minimum and maximum value of the range, or as a
// function that returns the range given the array of values and the current
// index `i`. The default range is the extent (minimum and maximum) of the
// values.
histogram.range = function(x) {
if (!arguments.length) return ranger;
ranger = d3_functor(x);
return histogram;
};
// Specifies how to bin values in the histogram. The argument `x` may be
// specified as a number, in which case the range of values will be split
// uniformly into the given number of bins. Or, `x` may be an array of
// threshold values, defining the bins; the specified array must contain the
// rightmost (upper) value, thus specifying n + 1 values for n bins. Or, `x`
// may be a function which is evaluated, being passed the range, the array of
// values, and the current index `i`, returning an array of thresholds. The
// default bin function will divide the values into uniform bins using
// Sturges' formula.
histogram.bins = function(x) {
if (!arguments.length) return binner;
binner = typeof x === "number"
? function(range) { return d3_layout_histogramBinFixed(range, x); }
: d3_functor(x);
return histogram;
};
// Specifies whether the histogram's `y` value is a count (frequency) or a
// probability (density). The default value is true.
histogram.frequency = function(x) {
if (!arguments.length) return frequency;
frequency = !!x;
return histogram;
};
return histogram;
};
function d3_layout_histogramBinSturges(range, values) {
return d3_layout_histogramBinFixed(range, Math.ceil(Math.log(values.length) / Math.LN2 + 1));
}
function d3_layout_histogramBinFixed(range, n) {
var x = -1,
b = +range[0],
m = (range[1] - b) / n,
f = [];
while (++x <= n) f[x] = m * x + b;
return f;
}
function d3_layout_histogramRange(values) {
return [d3.min(values), d3.max(values)];
}
d3.layout.hierarchy = function() {
var sort = d3_layout_hierarchySort,
children = d3_layout_hierarchyChildren,
value = d3_layout_hierarchyValue;
// Recursively compute the node depth and value.
// Also converts the data representation into a standard hierarchy structure.
function recurse(data, depth, nodes) {
var childs = children.call(hierarchy, data, depth),
node = d3_layout_hierarchyInline ? data : {data: data};
node.depth = depth;
nodes.push(node);
if (childs && (n = childs.length)) {
var i = -1,
n,
c = node.children = [],
v = 0,
j = depth + 1;
while (++i < n) {
d = recurse(childs[i], j, nodes);
d.parent = node;
c.push(d);
v += d.value;
}
if (sort) c.sort(sort);
if (value) node.value = v;
} else if (value) {
node.value = +value.call(hierarchy, data, depth) || 0;
}
return node;
}
// Recursively re-evaluates the node value.
function revalue(node, depth) {
var children = node.children,
v = 0;
if (children && (n = children.length)) {
var i = -1,
n,
j = depth + 1;
while (++i < n) v += revalue(children[i], j);
} else if (value) {
v = +value.call(hierarchy, d3_layout_hierarchyInline ? node : node.data, depth) || 0;
}
if (value) node.value = v;
return v;
}
function hierarchy(d) {
var nodes = [];
recurse(d, 0, nodes);
return nodes;
}
hierarchy.sort = function(x) {
if (!arguments.length) return sort;
sort = x;
return hierarchy;
};
hierarchy.children = function(x) {
if (!arguments.length) return children;
children = x;
return hierarchy;
};
hierarchy.value = function(x) {
if (!arguments.length) return value;
value = x;
return hierarchy;
};
// Re-evaluates the `value` property for the specified hierarchy.
hierarchy.revalue = function(root) {
revalue(root, 0);
return root;
};
return hierarchy;
};
// A method assignment helper for hierarchy subclasses.
function d3_layout_hierarchyRebind(object, hierarchy) {
d3.rebind(object, hierarchy, "sort", "children", "value");
// Add an alias for links, for convenience.
object.links = d3_layout_hierarchyLinks;
// If the new API is used, enabling inlining.
object.nodes = function(d) {
d3_layout_hierarchyInline = true;
return (object.nodes = object)(d);
};
return object;
}
function d3_layout_hierarchyChildren(d) {
return d.children;
}
function d3_layout_hierarchyValue(d) {
return d.value;
}
function d3_layout_hierarchySort(a, b) {
return b.value - a.value;
}
// Returns an array source+target objects for the specified nodes.
function d3_layout_hierarchyLinks(nodes) {
return d3.merge(nodes.map(function(parent) {
return (parent.children || []).map(function(child) {
return {source: parent, target: child};
});
}));
}
// For backwards-compatibility, don't enable inlining by default.
var d3_layout_hierarchyInline = false;
d3.layout.pack = function() {
var hierarchy = d3.layout.hierarchy().sort(d3_layout_packSort),
size = [1, 1];
function pack(d, i) {
var nodes = hierarchy.call(this, d, i),
root = nodes[0];
// Recursively compute the layout.
root.x = 0;
root.y = 0;
d3_layout_packTree(root);
// Scale the layout to fit the requested size.
var w = size[0],
h = size[1],
k = 1 / Math.max(2 * root.r / w, 2 * root.r / h);
d3_layout_packTransform(root, w / 2, h / 2, k);
return nodes;
}
pack.size = function(x) {
if (!arguments.length) return size;
size = x;
return pack;
};
return d3_layout_hierarchyRebind(pack, hierarchy);
};
function d3_layout_packSort(a, b) {
return a.value - b.value;
}
function d3_layout_packInsert(a, b) {
var c = a._pack_next;
a._pack_next = b;
b._pack_prev = a;
b._pack_next = c;
c._pack_prev = b;
}
function d3_layout_packSplice(a, b) {
a._pack_next = b;
b._pack_prev = a;
}
function d3_layout_packIntersects(a, b) {
var dx = b.x - a.x,
dy = b.y - a.y,
dr = a.r + b.r;
return dr * dr - dx * dx - dy * dy > .001; // within epsilon
}
function d3_layout_packCircle(nodes) {
var xMin = Infinity,
xMax = -Infinity,
yMin = Infinity,
yMax = -Infinity,
n = nodes.length,
a, b, c, j, k;
function bound(node) {
xMin = Math.min(node.x - node.r, xMin);
xMax = Math.max(node.x + node.r, xMax);
yMin = Math.min(node.y - node.r, yMin);
yMax = Math.max(node.y + node.r, yMax);
}
// Create node links.
nodes.forEach(d3_layout_packLink);
// Create first node.
a = nodes[0];
a.x = -a.r;
a.y = 0;
bound(a);
// Create second node.
if (n > 1) {
b = nodes[1];
b.x = b.r;
b.y = 0;
bound(b);
// Create third node and build chain.
if (n > 2) {
c = nodes[2];
d3_layout_packPlace(a, b, c);
bound(c);
d3_layout_packInsert(a, c);
a._pack_prev = c;
d3_layout_packInsert(c, b);
b = a._pack_next;
// Now iterate through the rest.
for (var i = 3; i < n; i++) {
d3_layout_packPlace(a, b, c = nodes[i]);
// Search for the closest intersection.
var isect = 0, s1 = 1, s2 = 1;
for (j = b._pack_next; j !== b; j = j._pack_next, s1++) {
if (d3_layout_packIntersects(j, c)) {
isect = 1;
break;
}
}
if (isect == 1) {
for (k = a._pack_prev; k !== j._pack_prev; k = k._pack_prev, s2++) {
if (d3_layout_packIntersects(k, c)) {
break;
}
}
}
// Update node chain.
if (isect) {
if (s1 < s2 || (s1 == s2 && b.r < a.r)) d3_layout_packSplice(a, b = j);
else d3_layout_packSplice(a = k, b);
i--;
} else {
d3_layout_packInsert(a, c);
b = c;
bound(c);
}
}
}
}
// Re-center the circles and return the encompassing radius.
var cx = (xMin + xMax) / 2,
cy = (yMin + yMax) / 2,
cr = 0;
for (var i = 0; i < n; i++) {
var node = nodes[i];
node.x -= cx;
node.y -= cy;
cr = Math.max(cr, node.r + Math.sqrt(node.x * node.x + node.y * node.y));
}
// Remove node links.
nodes.forEach(d3_layout_packUnlink);
return cr;
}
function d3_layout_packLink(node) {
node._pack_next = node._pack_prev = node;
}
function d3_layout_packUnlink(node) {
delete node._pack_next;
delete node._pack_prev;
}
function d3_layout_packTree(node) {
var children = node.children;
if (children && children.length) {
children.forEach(d3_layout_packTree);
node.r = d3_layout_packCircle(children);
} else {
node.r = Math.sqrt(node.value);
}
}
function d3_layout_packTransform(node, x, y, k) {
var children = node.children;
node.x = (x += k * node.x);
node.y = (y += k * node.y);
node.r *= k;
if (children) {
var i = -1, n = children.length;
while (++i < n) d3_layout_packTransform(children[i], x, y, k);
}
}
function d3_layout_packPlace(a, b, c) {
var db = a.r + c.r,
dx = b.x - a.x,
dy = b.y - a.y;
if (db && (dx || dy)) {
var da = b.r + c.r,
dc = Math.sqrt(dx * dx + dy * dy),
cos = Math.max(-1, Math.min(1, (db * db + dc * dc - da * da) / (2 * db * dc))),
theta = Math.acos(cos),
x = cos * (db /= dc),
y = Math.sin(theta) * db;
c.x = a.x + x * dx + y * dy;
c.y = a.y + x * dy - y * dx;
} else {
c.x = a.x + db;
c.y = a.y;
}
}
// Implements a hierarchical layout using the cluster (or dendrogram)
// algorithm.
d3.layout.cluster = function() {
var hierarchy = d3.layout.hierarchy().sort(null).value(null),
separation = d3_layout_treeSeparation,
size = [1, 1]; // width, height
function cluster(d, i) {
var nodes = hierarchy.call(this, d, i),
root = nodes[0],
previousNode,
x = 0,
kx,
ky;
// First walk, computing the initial x & y values.
d3_layout_treeVisitAfter(root, function(node) {
var children = node.children;
if (children && children.length) {
node.x = d3_layout_clusterX(children);
node.y = d3_layout_clusterY(children);
} else {
node.x = previousNode ? x += separation(node, previousNode) : 0;
node.y = 0;
previousNode = node;
}
});
// Compute the left-most, right-most, and depth-most nodes for extents.
var left = d3_layout_clusterLeft(root),
right = d3_layout_clusterRight(root),
x0 = left.x - separation(left, right) / 2,
x1 = right.x + separation(right, left) / 2;
// Second walk, normalizing x & y to the desired size.
d3_layout_treeVisitAfter(root, function(node) {
node.x = (node.x - x0) / (x1 - x0) * size[0];
node.y = (1 - (root.y ? node.y / root.y : 1)) * size[1];
});
return nodes;
}
cluster.separation = function(x) {
if (!arguments.length) return separation;
separation = x;
return cluster;
};
cluster.size = function(x) {
if (!arguments.length) return size;
size = x;
return cluster;
};
return d3_layout_hierarchyRebind(cluster, hierarchy);
};
function d3_layout_clusterY(children) {
return 1 + d3.max(children, function(child) {
return child.y;
});
}
function d3_layout_clusterX(children) {
return children.reduce(function(x, child) {
return x + child.x;
}, 0) / children.length;
}
function d3_layout_clusterLeft(node) {
var children = node.children;
return children && children.length ? d3_layout_clusterLeft(children[0]) : node;
}
function d3_layout_clusterRight(node) {
var children = node.children, n;
return children && (n = children.length) ? d3_layout_clusterRight(children[n - 1]) : node;
}
// Node-link tree diagram using the Reingold-Tilford "tidy" algorithm
d3.layout.tree = function() {
var hierarchy = d3.layout.hierarchy().sort(null).value(null),
separation = d3_layout_treeSeparation,
size = [1, 1]; // width, height
function tree(d, i) {
var nodes = hierarchy.call(this, d, i),
root = nodes[0];
function firstWalk(node, previousSibling) {
var children = node.children,
layout = node._tree;
if (children && (n = children.length)) {
var n,
firstChild = children[0],
previousChild,
ancestor = firstChild,
child,
i = -1;
while (++i < n) {
child = children[i];
firstWalk(child, previousChild);
ancestor = apportion(child, previousChild, ancestor);
previousChild = child;
}
d3_layout_treeShift(node);
var midpoint = .5 * (firstChild._tree.prelim + child._tree.prelim);
if (previousSibling) {
layout.prelim = previousSibling._tree.prelim + separation(node, previousSibling);
layout.mod = layout.prelim - midpoint;
} else {
layout.prelim = midpoint;
}
} else {
if (previousSibling) {
layout.prelim = previousSibling._tree.prelim + separation(node, previousSibling);
}
}
}
function secondWalk(node, x) {
node.x = node._tree.prelim + x;
var children = node.children;
if (children && (n = children.length)) {
var i = -1,
n;
x += node._tree.mod;
while (++i < n) {
secondWalk(children[i], x);
}
}
}
function apportion(node, previousSibling, ancestor) {
if (previousSibling) {
var vip = node,
vop = node,
vim = previousSibling,
vom = node.parent.children[0],
sip = vip._tree.mod,
sop = vop._tree.mod,
sim = vim._tree.mod,
som = vom._tree.mod,
shift;
while (vim = d3_layout_treeRight(vim), vip = d3_layout_treeLeft(vip), vim && vip) {
vom = d3_layout_treeLeft(vom);
vop = d3_layout_treeRight(vop);
vop._tree.ancestor = node;
shift = vim._tree.prelim + sim - vip._tree.prelim - sip + separation(vim, vip);
if (shift > 0) {
d3_layout_treeMove(d3_layout_treeAncestor(vim, node, ancestor), node, shift);
sip += shift;
sop += shift;
}
sim += vim._tree.mod;
sip += vip._tree.mod;
som += vom._tree.mod;
sop += vop._tree.mod;
}
if (vim && !d3_layout_treeRight(vop)) {
vop._tree.thread = vim;
vop._tree.mod += sim - sop;
}
if (vip && !d3_layout_treeLeft(vom)) {
vom._tree.thread = vip;
vom._tree.mod += sip - som;
ancestor = node;
}
}
return ancestor;
}
// Initialize temporary layout variables.
d3_layout_treeVisitAfter(root, function(node, previousSibling) {
node._tree = {
ancestor: node,
prelim: 0,
mod: 0,
change: 0,
shift: 0,
number: previousSibling ? previousSibling._tree.number + 1 : 0
};
});
// Compute the layout using Buchheim et al.'s algorithm.
firstWalk(root);
secondWalk(root, -root._tree.prelim);
// Compute the left-most, right-most, and depth-most nodes for extents.
var left = d3_layout_treeSearch(root, d3_layout_treeLeftmost),
right = d3_layout_treeSearch(root, d3_layout_treeRightmost),
deep = d3_layout_treeSearch(root, d3_layout_treeDeepest),
x0 = left.x - separation(left, right) / 2,
x1 = right.x + separation(right, left) / 2,
y1 = deep.depth || 1;
// Clear temporary layout variables; transform x and y.
d3_layout_treeVisitAfter(root, function(node) {
node.x = (node.x - x0) / (x1 - x0) * size[0];
node.y = node.depth / y1 * size[1];
delete node._tree;
});
return nodes;
}
tree.separation = function(x) {
if (!arguments.length) return separation;
separation = x;
return tree;
};
tree.size = function(x) {
if (!arguments.length) return size;
size = x;
return tree;
};
return d3_layout_hierarchyRebind(tree, hierarchy);
};
function d3_layout_treeSeparation(a, b) {
return a.parent == b.parent ? 1 : 2;
}
// function d3_layout_treeSeparationRadial(a, b) {
// return (a.parent == b.parent ? 1 : 2) / a.depth;
// }
function d3_layout_treeLeft(node) {
var children = node.children;
return children && children.length ? children[0] : node._tree.thread;
}
function d3_layout_treeRight(node) {
var children = node.children,
n;
return children && (n = children.length) ? children[n - 1] : node._tree.thread;
}
function d3_layout_treeSearch(node, compare) {
var children = node.children;
if (children && (n = children.length)) {
var child,
n,
i = -1;
while (++i < n) {
if (compare(child = d3_layout_treeSearch(children[i], compare), node) > 0) {
node = child;
}
}
}
return node;
}
function d3_layout_treeRightmost(a, b) {
return a.x - b.x;
}
function d3_layout_treeLeftmost(a, b) {
return b.x - a.x;
}
function d3_layout_treeDeepest(a, b) {
return a.depth - b.depth;
}
function d3_layout_treeVisitAfter(node, callback) {
function visit(node, previousSibling) {
var children = node.children;
if (children && (n = children.length)) {
var child,
previousChild = null,
i = -1,
n;
while (++i < n) {
child = children[i];
visit(child, previousChild);
previousChild = child;
}
}
callback(node, previousSibling);
}
visit(node, null);
}
function d3_layout_treeShift(node) {
var shift = 0,
change = 0,
children = node.children,
i = children.length,
child;
while (--i >= 0) {
child = children[i]._tree;
child.prelim += shift;
child.mod += shift;
shift += child.shift + (change += child.change);
}
}
function d3_layout_treeMove(ancestor, node, shift) {
ancestor = ancestor._tree;
node = node._tree;
var change = shift / (node.number - ancestor.number);
ancestor.change += change;
node.change -= change;
node.shift += shift;
node.prelim += shift;
node.mod += shift;
}
function d3_layout_treeAncestor(vim, node, ancestor) {
return vim._tree.ancestor.parent == node.parent
? vim._tree.ancestor
: ancestor;
}
// Squarified Treemaps by Mark Bruls, Kees Huizing, and Jarke J. van Wijk
// Modified to support a target aspect ratio by Jeff Heer
d3.layout.treemap = function() {
var hierarchy = d3.layout.hierarchy(),
round = Math.round,
size = [1, 1], // width, height
padding = null,
pad = d3_layout_treemapPadNull,
sticky = false,
stickies,
ratio = 0.5 * (1 + Math.sqrt(5)); // golden ratio
// Compute the area for each child based on value & scale.
function scale(children, k) {
var i = -1,
n = children.length,
child,
area;
while (++i < n) {
area = (child = children[i]).value * (k < 0 ? 0 : k);
child.area = isNaN(area) || area <= 0 ? 0 : area;
}
}
// Recursively arranges the specified node's children into squarified rows.
function squarify(node) {
var children = node.children;
if (children && children.length) {
var rect = pad(node),
row = [],
remaining = children.slice(), // copy-on-write
child,
best = Infinity, // the best row score so far
score, // the current row score
u = Math.min(rect.dx, rect.dy), // initial orientation
n;
scale(remaining, rect.dx * rect.dy / node.value);
row.area = 0;
while ((n = remaining.length) > 0) {
row.push(child = remaining[n - 1]);
row.area += child.area;
if ((score = worst(row, u)) <= best) { // continue with this orientation
remaining.pop();
best = score;
} else { // abort, and try a different orientation
row.area -= row.pop().area;
position(row, u, rect, false);
u = Math.min(rect.dx, rect.dy);
row.length = row.area = 0;
best = Infinity;
}
}
if (row.length) {
position(row, u, rect, true);
row.length = row.area = 0;
}
children.forEach(squarify);
}
}
// Recursively resizes the specified node's children into existing rows.
// Preserves the existing layout!
function stickify(node) {
var children = node.children;
if (children && children.length) {
var rect = pad(node),
remaining = children.slice(), // copy-on-write
child,
row = [];
scale(remaining, rect.dx * rect.dy / node.value);
row.area = 0;
while (child = remaining.pop()) {
row.push(child);
row.area += child.area;
if (child.z != null) {
position(row, child.z ? rect.dx : rect.dy, rect, !remaining.length);
row.length = row.area = 0;
}
}
children.forEach(stickify);
}
}
// Computes the score for the specified row, as the worst aspect ratio.
function worst(row, u) {
var s = row.area,
r,
rmax = 0,
rmin = Infinity,
i = -1,
n = row.length;
while (++i < n) {
if (!(r = row[i].area)) continue;
if (r < rmin) rmin = r;
if (r > rmax) rmax = r;
}
s *= s;
u *= u;
return s
? Math.max((u * rmax * ratio) / s, s / (u * rmin * ratio))
: Infinity;
}
// Positions the specified row of nodes. Modifies `rect`.
function position(row, u, rect, flush) {
var i = -1,
n = row.length,
x = rect.x,
y = rect.y,
v = u ? round(row.area / u) : 0,
o;
if (u == rect.dx) { // horizontal subdivision
if (flush || v > rect.dy) v = rect.dy; // over+underflow
while (++i < n) {
o = row[i];
o.x = x;
o.y = y;
o.dy = v;
x += o.dx = Math.min(rect.x + rect.dx - x, v ? round(o.area / v) : 0);
}
o.z = true;
o.dx += rect.x + rect.dx - x; // rounding error
rect.y += v;
rect.dy -= v;
} else { // vertical subdivision
if (flush || v > rect.dx) v = rect.dx; // over+underflow
while (++i < n) {
o = row[i];
o.x = x;
o.y = y;
o.dx = v;
y += o.dy = Math.min(rect.y + rect.dy - y, v ? round(o.area / v) : 0);
}
o.z = false;
o.dy += rect.y + rect.dy - y; // rounding error
rect.x += v;
rect.dx -= v;
}
}
function treemap(d) {
var nodes = stickies || hierarchy(d),
root = nodes[0];
root.x = 0;
root.y = 0;
root.dx = size[0];
root.dy = size[1];
if (stickies) hierarchy.revalue(root);
scale([root], root.dx * root.dy / root.value);
(stickies ? stickify : squarify)(root);
if (sticky) stickies = nodes;
return nodes;
}
treemap.size = function(x) {
if (!arguments.length) return size;
size = x;
return treemap;
};
treemap.padding = function(x) {
if (!arguments.length) return padding;
function padFunction(node) {
var p = x.call(treemap, node, node.depth);
return p == null
? d3_layout_treemapPadNull(node)
: d3_layout_treemapPad(node, typeof p === "number" ? [p, p, p, p] : p);
}
function padConstant(node) {
return d3_layout_treemapPad(node, x);
}
var type;
pad = (padding = x) == null ? d3_layout_treemapPadNull
: (type = typeof x) === "function" ? padFunction
: type === "number" ? (x = [x, x, x, x], padConstant)
: padConstant;
return treemap;
};
treemap.round = function(x) {
if (!arguments.length) return round != Number;
round = x ? Math.round : Number;
return treemap;
};
treemap.sticky = function(x) {
if (!arguments.length) return sticky;
sticky = x;
stickies = null;
return treemap;
};
treemap.ratio = function(x) {
if (!arguments.length) return ratio;
ratio = x;
return treemap;
};
return d3_layout_hierarchyRebind(treemap, hierarchy);
};
function d3_layout_treemapPadNull(node) {
return {x: node.x, y: node.y, dx: node.dx, dy: node.dy};
}
function d3_layout_treemapPad(node, padding) {
var x = node.x + padding[3],
y = node.y + padding[0],
dx = node.dx - padding[1] - padding[3],
dy = node.dy - padding[0] - padding[2];
if (dx < 0) { x += dx / 2; dx = 0; }
if (dy < 0) { y += dy / 2; dy = 0; }
return {x: x, y: y, dx: dx, dy: dy};
}
d3.csv = function(url, callback) {
d3.text(url, "text/csv", function(text) {
callback(text && d3.csv.parse(text));
});
};
d3.csv.parse = function(text) {
var header;
return d3.csv.parseRows(text, function(row, i) {
if (i) {
var o = {}, j = -1, m = header.length;
while (++j < m) o[header[j]] = row[j];
return o;
} else {
header = row;
return null;
}
});
};
d3.csv.parseRows = function(text, f) {
var EOL = {}, // sentinel value for end-of-line
EOF = {}, // sentinel value for end-of-file
rows = [], // output rows
re = /\r\n|[,\r\n]/g, // field separator regex
n = 0, // the current line number
t, // the current token
eol; // is the current token followed by EOL?
re.lastIndex = 0; // work-around bug in FF 3.6
/** @private Returns the next token. */
function token() {
if (re.lastIndex >= text.length) return EOF; // special case: end of file
if (eol) { eol = false; return EOL; } // special case: end of line
// special case: quotes
var j = re.lastIndex;
if (text.charCodeAt(j) === 34) {
var i = j;
while (i++ < text.length) {
if (text.charCodeAt(i) === 34) {
if (text.charCodeAt(i + 1) !== 34) break;
i++;
}
}
re.lastIndex = i + 2;
var c = text.charCodeAt(i + 1);
if (c === 13) {
eol = true;
if (text.charCodeAt(i + 2) === 10) re.lastIndex++;
} else if (c === 10) {
eol = true;
}
return text.substring(j + 1, i).replace(/""/g, "\"");
}
// common case
var m = re.exec(text);
if (m) {
eol = m[0].charCodeAt(0) !== 44;
return text.substring(j, m.index);
}
re.lastIndex = text.length;
return text.substring(j);
}
while ((t = token()) !== EOF) {
var a = [];
while ((t !== EOL) && (t !== EOF)) {
a.push(t);
t = token();
}
if (f && !(a = f(a, n++))) continue;
rows.push(a);
}
return rows;
};
d3.csv.format = function(rows) {
return rows.map(d3_csv_formatRow).join("\n");
};
function d3_csv_formatRow(row) {
return row.map(d3_csv_formatValue).join(",");
}
function d3_csv_formatValue(text) {
return /[",\n]/.test(text)
? "\"" + text.replace(/\"/g, "\"\"") + "\""
: text;
}
d3.geo = {};
var d3_geo_radians = Math.PI / 180;
// TODO clip input coordinates on opposite hemisphere
d3.geo.azimuthal = function() {
var mode = "orthographic", // or stereographic, gnomonic, equidistant or equalarea
origin,
scale = 200,
translate = [480, 250],
x0,
y0,
cy0,
sy0;
function azimuthal(coordinates) {
var x1 = coordinates[0] * d3_geo_radians - x0,
y1 = coordinates[1] * d3_geo_radians,
cx1 = Math.cos(x1),
sx1 = Math.sin(x1),
cy1 = Math.cos(y1),
sy1 = Math.sin(y1),
cc = mode !== "orthographic" ? sy0 * sy1 + cy0 * cy1 * cx1 : null,
c,
k = mode === "stereographic" ? 1 / (1 + cc)
: mode === "gnomonic" ? 1 / cc
: mode === "equidistant" ? (c = Math.acos(cc), c ? c / Math.sin(c) : 0)
: mode === "equalarea" ? Math.sqrt(2 / (1 + cc))
: 1,
x = k * cy1 * sx1,
y = k * (sy0 * cy1 * cx1 - cy0 * sy1);
return [
scale * x + translate[0],
scale * y + translate[1]
];
}
azimuthal.invert = function(coordinates) {
var x = (coordinates[0] - translate[0]) / scale,
y = (coordinates[1] - translate[1]) / scale,
p = Math.sqrt(x * x + y * y),
c = mode === "stereographic" ? 2 * Math.atan(p)
: mode === "gnomonic" ? Math.atan(p)
: mode === "equidistant" ? p
: mode === "equalarea" ? 2 * Math.asin(.5 * p)
: Math.asin(p),
sc = Math.sin(c),
cc = Math.cos(c);
return [
(x0 + Math.atan2(x * sc, p * cy0 * cc + y * sy0 * sc)) / d3_geo_radians,
Math.asin(cc * sy0 - (p ? (y * sc * cy0) / p : 0)) / d3_geo_radians
];
};
azimuthal.mode = function(x) {
if (!arguments.length) return mode;
mode = x + "";
return azimuthal;
};
azimuthal.origin = function(x) {
if (!arguments.length) return origin;
origin = x;
x0 = origin[0] * d3_geo_radians;
y0 = origin[1] * d3_geo_radians;
cy0 = Math.cos(y0);
sy0 = Math.sin(y0);
return azimuthal;
};
azimuthal.scale = function(x) {
if (!arguments.length) return scale;
scale = +x;
return azimuthal;
};
azimuthal.translate = function(x) {
if (!arguments.length) return translate;
translate = [+x[0], +x[1]];
return azimuthal;
};
return azimuthal.origin([0, 0]);
};
// Derived from Tom Carden's Albers implementation for Protovis.
// http://gist.github.com/476238
// http://mathworld.wolfram.com/AlbersEqual-AreaConicProjection.html
d3.geo.albers = function() {
var origin = [-98, 38],
parallels = [29.5, 45.5],
scale = 1000,
translate = [480, 250],
lng0, // d3_geo_radians * origin[0]
n,
C,
p0;
function albers(coordinates) {
var t = n * (d3_geo_radians * coordinates[0] - lng0),
p = Math.sqrt(C - 2 * n * Math.sin(d3_geo_radians * coordinates[1])) / n;
return [
scale * p * Math.sin(t) + translate[0],
scale * (p * Math.cos(t) - p0) + translate[1]
];
}
albers.invert = function(coordinates) {
var x = (coordinates[0] - translate[0]) / scale,
y = (coordinates[1] - translate[1]) / scale,
p0y = p0 + y,
t = Math.atan2(x, p0y),
p = Math.sqrt(x * x + p0y * p0y);
return [
(lng0 + t / n) / d3_geo_radians,
Math.asin((C - p * p * n * n) / (2 * n)) / d3_geo_radians
];
};
function reload() {
var phi1 = d3_geo_radians * parallels[0],
phi2 = d3_geo_radians * parallels[1],
lat0 = d3_geo_radians * origin[1],
s = Math.sin(phi1),
c = Math.cos(phi1);
lng0 = d3_geo_radians * origin[0];
n = .5 * (s + Math.sin(phi2));
C = c * c + 2 * n * s;
p0 = Math.sqrt(C - 2 * n * Math.sin(lat0)) / n;
return albers;
}
albers.origin = function(x) {
if (!arguments.length) return origin;
origin = [+x[0], +x[1]];
return reload();
};
albers.parallels = function(x) {
if (!arguments.length) return parallels;
parallels = [+x[0], +x[1]];
return reload();
};
albers.scale = function(x) {
if (!arguments.length) return scale;
scale = +x;
return albers;
};
albers.translate = function(x) {
if (!arguments.length) return translate;
translate = [+x[0], +x[1]];
return albers;
};
return reload();
};
// A composite projection for the United States, 960x500. The set of standard
// parallels for each region comes from USGS, which is published here:
// http://egsc.usgs.gov/isb/pubs/MapProjections/projections.html#albers
// TODO allow the composite projection to be rescaled?
d3.geo.albersUsa = function() {
var lower48 = d3.geo.albers();
var alaska = d3.geo.albers()
.origin([-160, 60])
.parallels([55, 65]);
var hawaii = d3.geo.albers()
.origin([-160, 20])
.parallels([8, 18]);
var puertoRico = d3.geo.albers()
.origin([-60, 10])
.parallels([8, 18]);
function albersUsa(coordinates) {
var lon = coordinates[0],
lat = coordinates[1];
return (lat > 50 ? alaska
: lon < -140 ? hawaii
: lat < 21 ? puertoRico
: lower48)(coordinates);
}
albersUsa.scale = function(x) {
if (!arguments.length) return lower48.scale();
lower48.scale(x);
alaska.scale(x * .6);
hawaii.scale(x);
puertoRico.scale(x * 1.5);
return albersUsa.translate(lower48.translate());
};
albersUsa.translate = function(x) {
if (!arguments.length) return lower48.translate();
var dz = lower48.scale() / 1000,
dx = x[0],
dy = x[1];
lower48.translate(x);
alaska.translate([dx - 400 * dz, dy + 170 * dz]);
hawaii.translate([dx - 190 * dz, dy + 200 * dz]);
puertoRico.translate([dx + 580 * dz, dy + 430 * dz]);
return albersUsa;
};
return albersUsa.scale(lower48.scale());
};
d3.geo.bonne = function() {
var scale = 200,
translate = [480, 250],
x0, // origin longitude in radians
y0, // origin latitude in radians
y1, // parallel latitude in radians
c1; // cot(y1)
function bonne(coordinates) {
var x = coordinates[0] * d3_geo_radians - x0,
y = coordinates[1] * d3_geo_radians - y0;
if (y1) {
var p = c1 + y1 - y, E = x * Math.cos(y) / p;
x = p * Math.sin(E);
y = p * Math.cos(E) - c1;
} else {
x *= Math.cos(y);
y *= -1;
}
return [
scale * x + translate[0],
scale * y + translate[1]
];
}
bonne.invert = function(coordinates) {
var x = (coordinates[0] - translate[0]) / scale,
y = (coordinates[1] - translate[1]) / scale;
if (y1) {
var c = c1 + y, p = Math.sqrt(x * x + c * c);
y = c1 + y1 - p;
x = x0 + p * Math.atan2(x, c) / Math.cos(y);
} else {
y *= -1;
x /= Math.cos(y);
}
return [
x / d3_geo_radians,
y / d3_geo_radians
];
};
// 90° for Werner, 0° for Sinusoidal
bonne.parallel = function(x) {
if (!arguments.length) return y1 / d3_geo_radians;
c1 = 1 / Math.tan(y1 = x * d3_geo_radians);
return bonne;
};
bonne.origin = function(x) {
if (!arguments.length) return [x0 / d3_geo_radians, y0 / d3_geo_radians];
x0 = x[0] * d3_geo_radians;
y0 = x[1] * d3_geo_radians;
return bonne;
};
bonne.scale = function(x) {
if (!arguments.length) return scale;
scale = +x;
return bonne;
};
bonne.translate = function(x) {
if (!arguments.length) return translate;
translate = [+x[0], +x[1]];
return bonne;
};
return bonne.origin([0, 0]).parallel(45);
};
d3.geo.equirectangular = function() {
var scale = 500,
translate = [480, 250];
function equirectangular(coordinates) {
var x = coordinates[0] / 360,
y = -coordinates[1] / 360;
return [
scale * x + translate[0],
scale * y + translate[1]
];
}
equirectangular.invert = function(coordinates) {
var x = (coordinates[0] - translate[0]) / scale,
y = (coordinates[1] - translate[1]) / scale;
return [
360 * x,
-360 * y
];
};
equirectangular.scale = function(x) {
if (!arguments.length) return scale;
scale = +x;
return equirectangular;
};
equirectangular.translate = function(x) {
if (!arguments.length) return translate;
translate = [+x[0], +x[1]];
return equirectangular;
};
return equirectangular;
};
d3.geo.mercator = function() {
var scale = 500,
translate = [480, 250];
function mercator(coordinates) {
var x = coordinates[0] / 360,
y = -(Math.log(Math.tan(Math.PI / 4 + coordinates[1] * d3_geo_radians / 2)) / d3_geo_radians) / 360;
return [
scale * x + translate[0],
scale * Math.max(-.5, Math.min(.5, y)) + translate[1]
];
}
mercator.invert = function(coordinates) {
var x = (coordinates[0] - translate[0]) / scale,
y = (coordinates[1] - translate[1]) / scale;
return [
360 * x,
2 * Math.atan(Math.exp(-360 * y * d3_geo_radians)) / d3_geo_radians - 90
];
};
mercator.scale = function(x) {
if (!arguments.length) return scale;
scale = +x;
return mercator;
};
mercator.translate = function(x) {
if (!arguments.length) return translate;
translate = [+x[0], +x[1]];
return mercator;
};
return mercator;
};
function d3_geo_type(types, defaultValue) {
return function(object) {
return object && types.hasOwnProperty(object.type) ? types[object.type](object) : defaultValue;
};
}
/**
* Returns a function that, given a GeoJSON object (e.g., a feature), returns
* the corresponding SVG path. The function can be customized by overriding the
* projection. Point features are mapped to circles with a default radius of
* 4.5px; the radius can be specified either as a constant or a function that
* is evaluated per object.
*/
d3.geo.path = function() {
var pointRadius = 4.5,
pointCircle = d3_path_circle(pointRadius),
projection = d3.geo.albersUsa();
function path(d, i) {
if (typeof pointRadius === "function") {
pointCircle = d3_path_circle(pointRadius.apply(this, arguments));
}
return pathType(d) || null;
}
function project(coordinates) {
return projection(coordinates).join(",");
}
var pathType = d3_geo_type({
FeatureCollection: function(o) {
var path = [],
features = o.features,
i = -1, // features.index
n = features.length;
while (++i < n) path.push(pathType(features[i].geometry));
return path.join("");
},
Feature: function(o) {
return pathType(o.geometry);
},
Point: function(o) {
return "M" + project(o.coordinates) + pointCircle;
},
MultiPoint: function(o) {
var path = [],
coordinates = o.coordinates,
i = -1, // coordinates.index
n = coordinates.length;
while (++i < n) path.push("M", project(coordinates[i]), pointCircle);
return path.join("");
},
LineString: function(o) {
var path = ["M"],
coordinates = o.coordinates,
i = -1, // coordinates.index
n = coordinates.length;
while (++i < n) path.push(project(coordinates[i]), "L");
path.pop();
return path.join("");
},
MultiLineString: function(o) {
var path = [],
coordinates = o.coordinates,
i = -1, // coordinates.index
n = coordinates.length,
subcoordinates, // coordinates[i]
j, // subcoordinates.index
m; // subcoordinates.length
while (++i < n) {
subcoordinates = coordinates[i];
j = -1;
m = subcoordinates.length;
path.push("M");
while (++j < m) path.push(project(subcoordinates[j]), "L");
path.pop();
}
return path.join("");
},
Polygon: function(o) {
var path = [],
coordinates = o.coordinates,
i = -1, // coordinates.index
n = coordinates.length,
subcoordinates, // coordinates[i]
j, // subcoordinates.index
m; // subcoordinates.length
while (++i < n) {
subcoordinates = coordinates[i];
j = -1;
if ((m = subcoordinates.length - 1) > 0) {
path.push("M");
while (++j < m) path.push(project(subcoordinates[j]), "L");
path[path.length - 1] = "Z";
}
}
return path.join("");
},
MultiPolygon: function(o) {
var path = [],
coordinates = o.coordinates,
i = -1, // coordinates index
n = coordinates.length,
subcoordinates, // coordinates[i]
j, // subcoordinates index
m, // subcoordinates.length
subsubcoordinates, // subcoordinates[j]
k, // subsubcoordinates index
p; // subsubcoordinates.length
while (++i < n) {
subcoordinates = coordinates[i];
j = -1;
m = subcoordinates.length;
while (++j < m) {
subsubcoordinates = subcoordinates[j];
k = -1;
if ((p = subsubcoordinates.length - 1) > 0) {
path.push("M");
while (++k < p) path.push(project(subsubcoordinates[k]), "L");
path[path.length - 1] = "Z";
}
}
}
return path.join("");
},
GeometryCollection: function(o) {
var path = [],
geometries = o.geometries,
i = -1, // geometries index
n = geometries.length;
while (++i < n) path.push(pathType(geometries[i]));
return path.join("");
}
});
var areaType = path.area = d3_geo_type({
FeatureCollection: function(o) {
var area = 0,
features = o.features,
i = -1, // features.index
n = features.length;
while (++i < n) area += areaType(features[i]);
return area;
},
Feature: function(o) {
return areaType(o.geometry);
},
Polygon: function(o) {
return polygonArea(o.coordinates);
},
MultiPolygon: function(o) {
var sum = 0,
coordinates = o.coordinates,
i = -1, // coordinates index
n = coordinates.length;
while (++i < n) sum += polygonArea(coordinates[i]);
return sum;
},
GeometryCollection: function(o) {
var sum = 0,
geometries = o.geometries,
i = -1, // geometries index
n = geometries.length;
while (++i < n) sum += areaType(geometries[i]);
return sum;
}
}, 0);
function polygonArea(coordinates) {
var sum = area(coordinates[0]), // exterior ring
i = 0, // coordinates.index
n = coordinates.length;
while (++i < n) sum -= area(coordinates[i]); // holes
return sum;
}
function polygonCentroid(coordinates) {
var polygon = d3.geom.polygon(coordinates[0].map(projection)), // exterior ring
area = polygon.area(),
centroid = polygon.centroid(area < 0 ? (area *= -1, 1) : -1),
x = centroid[0],
y = centroid[1],
z = area,
i = 0, // coordinates index
n = coordinates.length;
while (++i < n) {
polygon = d3.geom.polygon(coordinates[i].map(projection)); // holes
area = polygon.area();
centroid = polygon.centroid(area < 0 ? (area *= -1, 1) : -1);
x -= centroid[0];
y -= centroid[1];
z -= area;
}
return [x, y, 6 * z]; // weighted centroid
}
var centroidType = path.centroid = d3_geo_type({
// TODO FeatureCollection
// TODO Point
// TODO MultiPoint
// TODO LineString
// TODO MultiLineString
// TODO GeometryCollection
Feature: function(o) {
return centroidType(o.geometry);
},
Polygon: function(o) {
var centroid = polygonCentroid(o.coordinates);
return [centroid[0] / centroid[2], centroid[1] / centroid[2]];
},
MultiPolygon: function(o) {
var area = 0,
coordinates = o.coordinates,
centroid,
x = 0,
y = 0,
z = 0,
i = -1, // coordinates index
n = coordinates.length;
while (++i < n) {
centroid = polygonCentroid(coordinates[i]);
x += centroid[0];
y += centroid[1];
z += centroid[2];
}
return [x / z, y / z];
}
});
function area(coordinates) {
return Math.abs(d3.geom.polygon(coordinates.map(projection)).area());
}
path.projection = function(x) {
projection = x;
return path;
};
path.pointRadius = function(x) {
if (typeof x === "function") pointRadius = x;
else {
pointRadius = +x;
pointCircle = d3_path_circle(pointRadius);
}
return path;
};
return path;
};
function d3_path_circle(radius) {
return "m0," + radius
+ "a" + radius + "," + radius + " 0 1,1 0," + (-2 * radius)
+ "a" + radius + "," + radius + " 0 1,1 0," + (+2 * radius)
+ "z";
}
/**
* Given a GeoJSON object, returns the corresponding bounding box. The bounding
* box is represented by a two-dimensional array: [[left, bottom], [right,
* top]], where left is the minimum longitude, bottom is the minimum latitude,
* right is maximum longitude, and top is the maximum latitude.
*/
d3.geo.bounds = function(feature) {
var left = Infinity,
bottom = Infinity,
right = -Infinity,
top = -Infinity;
d3_geo_bounds(feature, function(x, y) {
if (x < left) left = x;
if (x > right) right = x;
if (y < bottom) bottom = y;
if (y > top) top = y;
});
return [[left, bottom], [right, top]];
};
function d3_geo_bounds(o, f) {
if (d3_geo_boundsTypes.hasOwnProperty(o.type)) d3_geo_boundsTypes[o.type](o, f);
}
var d3_geo_boundsTypes = {
Feature: d3_geo_boundsFeature,
FeatureCollection: d3_geo_boundsFeatureCollection,
GeometryCollection: d3_geo_boundsGeometryCollection,
LineString: d3_geo_boundsLineString,
MultiLineString: d3_geo_boundsMultiLineString,
MultiPoint: d3_geo_boundsLineString,
MultiPolygon: d3_geo_boundsMultiPolygon,
Point: d3_geo_boundsPoint,
Polygon: d3_geo_boundsPolygon
};
function d3_geo_boundsFeature(o, f) {
d3_geo_bounds(o.geometry, f);
}
function d3_geo_boundsFeatureCollection(o, f) {
for (var a = o.features, i = 0, n = a.length; i < n; i++) {
d3_geo_bounds(a[i].geometry, f);
}
}
function d3_geo_boundsGeometryCollection(o, f) {
for (var a = o.geometries, i = 0, n = a.length; i < n; i++) {
d3_geo_bounds(a[i], f);
}
}
function d3_geo_boundsLineString(o, f) {
for (var a = o.coordinates, i = 0, n = a.length; i < n; i++) {
f.apply(null, a[i]);
}
}
function d3_geo_boundsMultiLineString(o, f) {
for (var a = o.coordinates, i = 0, n = a.length; i < n; i++) {
for (var b = a[i], j = 0, m = b.length; j < m; j++) {
f.apply(null, b[j]);
}
}
}
function d3_geo_boundsMultiPolygon(o, f) {
for (var a = o.coordinates, i = 0, n = a.length; i < n; i++) {
for (var b = a[i][0], j = 0, m = b.length; j < m; j++) {
f.apply(null, b[j]);
}
}
}
function d3_geo_boundsPoint(o, f) {
f.apply(null, o.coordinates);
}
function d3_geo_boundsPolygon(o, f) {
for (var a = o.coordinates[0], i = 0, n = a.length; i < n; i++) {
f.apply(null, a[i]);
}
}
// TODO breakAtDateLine?
d3.geo.circle = function() {
var origin = [0, 0],
degrees = 90 - 1e-2,
radians = degrees * d3_geo_radians,
arc = d3.geo.greatArc().target(d3_identity);
function circle() {
// TODO render a circle as a Polygon
}
function visible(point) {
return arc.distance(point) < radians;
}
circle.clip = function(d) {
arc.source(typeof origin === "function" ? origin.apply(this, arguments) : origin);
return clipType(d);
};
var clipType = d3_geo_type({
FeatureCollection: function(o) {
var features = o.features.map(clipType).filter(d3_identity);
return features && (o = Object.create(o), o.features = features, o);
},
Feature: function(o) {
var geometry = clipType(o.geometry);
return geometry && (o = Object.create(o), o.geometry = geometry, o);
},
Point: function(o) {
return visible(o.coordinates) && o;
},
MultiPoint: function(o) {
var coordinates = o.coordinates.filter(visible);
return coordinates.length && {
type: o.type,
coordinates: coordinates
};
},
LineString: function(o) {
var coordinates = clip(o.coordinates);
return coordinates.length && (o = Object.create(o), o.coordinates = coordinates, o);
},
MultiLineString: function(o) {
var coordinates = o.coordinates.map(clip).filter(function(d) { return d.length; });
return coordinates.length && (o = Object.create(o), o.coordinates = coordinates, o);
},
Polygon: function(o) {
var coordinates = o.coordinates.map(clip);
return coordinates[0].length && (o = Object.create(o), o.coordinates = coordinates, o);
},
MultiPolygon: function(o) {
var coordinates = o.coordinates.map(function(d) { return d.map(clip); }).filter(function(d) { return d[0].length; });
return coordinates.length && (o = Object.create(o), o.coordinates = coordinates, o);
},
GeometryCollection: function(o) {
var geometries = o.geometries.map(clipType).filter(d3_identity);
return geometries.length && (o = Object.create(o), o.geometries = geometries, o);
}
});
function clip(coordinates) {
var i = -1,
n = coordinates.length,
clipped = [],
p0,
p1,
p2,
d0,
d1;
while (++i < n) {
d1 = arc.distance(p2 = coordinates[i]);
if (d1 < radians) {
if (p1) clipped.push(d3_geo_greatArcInterpolate(p1, p2)((d0 - radians) / (d0 - d1)));
clipped.push(p2);
p0 = p1 = null;
} else {
p1 = p2;
if (!p0 && clipped.length) {
clipped.push(d3_geo_greatArcInterpolate(clipped[clipped.length - 1], p1)((radians - d0) / (d1 - d0)));
p0 = p1;
}
}
d0 = d1;
}
if (p1 && clipped.length) {
d1 = arc.distance(p2 = clipped[0]);
clipped.push(d3_geo_greatArcInterpolate(p1, p2)((d0 - radians) / (d0 - d1)));
}
return resample(clipped);
}
// Resample coordinates, creating great arcs between each.
function resample(coordinates) {
var i = 0,
n = coordinates.length,
j,
m,
resampled = n ? [coordinates[0]] : coordinates,
resamples,
origin = arc.source();
while (++i < n) {
resamples = arc.source(coordinates[i - 1])(coordinates[i]).coordinates;
for (j = 0, m = resamples.length; ++j < m;) resampled.push(resamples[j]);
}
arc.source(origin);
return resampled;
}
circle.origin = function(x) {
if (!arguments.length) return origin;
origin = x;
return circle;
};
circle.angle = function(x) {
if (!arguments.length) return degrees;
radians = (degrees = +x) * d3_geo_radians;
return circle;
};
// Precision is specified in degrees.
circle.precision = function(x) {
if (!arguments.length) return arc.precision();
arc.precision(x);
return circle;
};
return circle;
}
d3.geo.greatArc = function() {
var source = d3_geo_greatArcSource,
target = d3_geo_greatArcTarget,
precision = 6 * d3_geo_radians;
function greatArc() {
var a = typeof source === "function" ? source.apply(this, arguments) : source,
b = typeof target === "function" ? target.apply(this, arguments) : target,
i = d3_geo_greatArcInterpolate(a, b),
dt = precision / i.d,
t = 0,
coordinates = [a];
while ((t += dt) < 1) coordinates.push(i(t));
coordinates.push(b);
return {
type: "LineString",
coordinates: coordinates
};
}
// Length returned in radians; multiply by radius for distance.
greatArc.distance = function() {
var a = typeof source === "function" ? source.apply(this, arguments) : source,
b = typeof target === "function" ? target.apply(this, arguments) : target;
return d3_geo_greatArcInterpolate(a, b).d;
};
greatArc.source = function(x) {
if (!arguments.length) return source;
source = x;
return greatArc;
};
greatArc.target = function(x) {
if (!arguments.length) return target;
target = x;
return greatArc;
};
// Precision is specified in degrees.
greatArc.precision = function(x) {
if (!arguments.length) return precision / d3_geo_radians;
precision = x * d3_geo_radians;
return greatArc;
};
return greatArc;
};
function d3_geo_greatArcSource(d) {
return d.source;
}
function d3_geo_greatArcTarget(d) {
return d.target;
}
function d3_geo_greatArcInterpolate(a, b) {
var x0 = a[0] * d3_geo_radians, cx0 = Math.cos(x0), sx0 = Math.sin(x0),
y0 = a[1] * d3_geo_radians, cy0 = Math.cos(y0), sy0 = Math.sin(y0),
x1 = b[0] * d3_geo_radians, cx1 = Math.cos(x1), sx1 = Math.sin(x1),
y1 = b[1] * d3_geo_radians, cy1 = Math.cos(y1), sy1 = Math.sin(y1),
d = interpolate.d = Math.acos(Math.max(-1, Math.min(1, sy0 * sy1 + cy0 * cy1 * Math.cos(x1 - x0)))),
sd = Math.sin(d);
// From http://williams.best.vwh.net/avform.htm#Intermediate
function interpolate(t) {
var A = Math.sin(d - (t *= d)) / sd,
B = Math.sin(t) / sd,
x = A * cy0 * cx0 + B * cy1 * cx1,
y = A * cy0 * sx0 + B * cy1 * sx1,
z = A * sy0 + B * sy1;
return [
Math.atan2(y, x) / d3_geo_radians,
Math.atan2(z, Math.sqrt(x * x + y * y)) / d3_geo_radians
];
}
return interpolate;
}
d3.geo.greatCircle = d3.geo.circle;
d3.geom = {};
/**
* Computes a contour for a given input grid function using the <a
* href="http://en.wikipedia.org/wiki/Marching_squares">marching
* squares</a> algorithm. Returns the contour polygon as an array of points.
*
* @param grid a two-input function(x, y) that returns true for values
* inside the contour and false for values outside the contour.
* @param start an optional starting point [x, y] on the grid.
* @returns polygon [[x1, y1], [x2, y2], …]
*/
d3.geom.contour = function(grid, start) {
var s = start || d3_geom_contourStart(grid), // starting point
c = [], // contour polygon
x = s[0], // current x position
y = s[1], // current y position
dx = 0, // next x direction
dy = 0, // next y direction
pdx = NaN, // previous x direction
pdy = NaN, // previous y direction
i = 0;
do {
// determine marching squares index
i = 0;
if (grid(x-1, y-1)) i += 1;
if (grid(x, y-1)) i += 2;
if (grid(x-1, y )) i += 4;
if (grid(x, y )) i += 8;
// determine next direction
if (i === 6) {
dx = pdy === -1 ? -1 : 1;
dy = 0;
} else if (i === 9) {
dx = 0;
dy = pdx === 1 ? -1 : 1;
} else {
dx = d3_geom_contourDx[i];
dy = d3_geom_contourDy[i];
}
// update contour polygon
if (dx != pdx && dy != pdy) {
c.push([x, y]);
pdx = dx;
pdy = dy;
}
x += dx;
y += dy;
} while (s[0] != x || s[1] != y);
return c;
};
// lookup tables for marching directions
var d3_geom_contourDx = [1, 0, 1, 1,-1, 0,-1, 1,0, 0,0,0,-1, 0,-1,NaN],
d3_geom_contourDy = [0,-1, 0, 0, 0,-1, 0, 0,1,-1,1,1, 0,-1, 0,NaN];
function d3_geom_contourStart(grid) {
var x = 0,
y = 0;
// search for a starting point; begin at origin
// and proceed along outward-expanding diagonals
while (true) {
if (grid(x,y)) {
return [x,y];
}
if (x === 0) {
x = y + 1;
y = 0;
} else {
x = x - 1;
y = y + 1;
}
}
}
/**
* Computes the 2D convex hull of a set of points using Graham's scanning
* algorithm. The algorithm has been implemented as described in Cormen,
* Leiserson, and Rivest's Introduction to Algorithms. The running time of
* this algorithm is O(n log n), where n is the number of input points.
*
* @param vertices [[x1, y1], [x2, y2], …]
* @returns polygon [[x1, y1], [x2, y2], …]
*/
d3.geom.hull = function(vertices) {
if (vertices.length < 3) return [];
var len = vertices.length,
plen = len - 1,
points = [],
stack = [],
i, j, h = 0, x1, y1, x2, y2, u, v, a, sp;
// find the starting ref point: leftmost point with the minimum y coord
for (i=1; i<len; ++i) {
if (vertices[i][1] < vertices[h][1]) {
h = i;
} else if (vertices[i][1] == vertices[h][1]) {
h = (vertices[i][0] < vertices[h][0] ? i : h);
}
}
// calculate polar angles from ref point and sort
for (i=0; i<len; ++i) {
if (i === h) continue;
y1 = vertices[i][1] - vertices[h][1];
x1 = vertices[i][0] - vertices[h][0];
points.push({angle: Math.atan2(y1, x1), index: i});
}
points.sort(function(a, b) { return a.angle - b.angle; });
// toss out duplicate angles
a = points[0].angle;
v = points[0].index;
u = 0;
for (i=1; i<plen; ++i) {
j = points[i].index;
if (a == points[i].angle) {
// keep angle for point most distant from the reference
x1 = vertices[v][0] - vertices[h][0];
y1 = vertices[v][1] - vertices[h][1];
x2 = vertices[j][0] - vertices[h][0];
y2 = vertices[j][1] - vertices[h][1];
if ((x1*x1 + y1*y1) >= (x2*x2 + y2*y2)) {
points[i].index = -1;
} else {
points[u].index = -1;
a = points[i].angle;
u = i;
v = j;
}
} else {
a = points[i].angle;
u = i;
v = j;
}
}
// initialize the stack
stack.push(h);
for (i=0, j=0; i<2; ++j) {
if (points[j].index !== -1) {
stack.push(points[j].index);
i++;
}
}
sp = stack.length;
// do graham's scan
for (; j<plen; ++j) {
if (points[j].index === -1) continue; // skip tossed out points
while (!d3_geom_hullCCW(stack[sp-2], stack[sp-1], points[j].index, vertices)) {
--sp;
}
stack[sp++] = points[j].index;
}
// construct the hull
var poly = [];
for (i=0; i<sp; ++i) {
poly.push(vertices[stack[i]]);
}
return poly;
}
// are three points in counter-clockwise order?
function d3_geom_hullCCW(i1, i2, i3, v) {
var t, a, b, c, d, e, f;
t = v[i1]; a = t[0]; b = t[1];
t = v[i2]; c = t[0]; d = t[1];
t = v[i3]; e = t[0]; f = t[1];
return ((f-b)*(c-a) - (d-b)*(e-a)) > 0;
}
// Note: requires coordinates to be counterclockwise and convex!
d3.geom.polygon = function(coordinates) {
coordinates.area = function() {
var i = 0,
n = coordinates.length,
a = coordinates[n - 1][0] * coordinates[0][1],
b = coordinates[n - 1][1] * coordinates[0][0];
while (++i < n) {
a += coordinates[i - 1][0] * coordinates[i][1];
b += coordinates[i - 1][1] * coordinates[i][0];
}
return (b - a) * .5;
};
coordinates.centroid = function(k) {
var i = -1,
n = coordinates.length,
x = 0,
y = 0,
a,
b = coordinates[n - 1],
c;
if (!arguments.length) k = -1 / (6 * coordinates.area());
while (++i < n) {
a = b;
b = coordinates[i];
c = a[0] * b[1] - b[0] * a[1];
x += (a[0] + b[0]) * c;
y += (a[1] + b[1]) * c;
}
return [x * k, y * k];
};
// The Sutherland-Hodgman clipping algorithm.
coordinates.clip = function(subject) {
var input,
i = -1,
n = coordinates.length,
j,
m,
a = coordinates[n - 1],
b,
c,
d;
while (++i < n) {
input = subject.slice();
subject.length = 0;
b = coordinates[i];
c = input[(m = input.length) - 1];
j = -1;
while (++j < m) {
d = input[j];
if (d3_geom_polygonInside(d, a, b)) {
if (!d3_geom_polygonInside(c, a, b)) {
subject.push(d3_geom_polygonIntersect(c, d, a, b));
}
subject.push(d);
} else if (d3_geom_polygonInside(c, a, b)) {
subject.push(d3_geom_polygonIntersect(c, d, a, b));
}
c = d;
}
a = b;
}
return subject;
};
return coordinates;
};
function d3_geom_polygonInside(p, a, b) {
return (b[0] - a[0]) * (p[1] - a[1]) < (b[1] - a[1]) * (p[0] - a[0]);
}
// Intersect two infinite lines cd and ab.
function d3_geom_polygonIntersect(c, d, a, b) {
var x1 = c[0], x2 = d[0], x3 = a[0], x4 = b[0],
y1 = c[1], y2 = d[1], y3 = a[1], y4 = b[1],
x13 = x1 - x3,
x21 = x2 - x1,
x43 = x4 - x3,
y13 = y1 - y3,
y21 = y2 - y1,
y43 = y4 - y3,
ua = (x43 * y13 - y43 * x13) / (y43 * x21 - x43 * y21);
return [x1 + ua * x21, y1 + ua * y21];
}
// Adapted from Nicolas Garcia Belmonte's JIT implementation:
// http://blog.thejit.org/2010/02/12/voronoi-tessellation/
// http://blog.thejit.org/assets/voronoijs/voronoi.js
// See lib/jit/LICENSE for details.
// Notes:
//
// This implementation does not clip the returned polygons, so if you want to
// clip them to a particular shape you will need to do that either in SVG or by
// post-processing with d3.geom.polygon's clip method.
//
// If any vertices are coincident or have NaN positions, the behavior of this
// method is undefined. Most likely invalid polygons will be returned. You
// should filter invalid points, and consolidate coincident points, before
// computing the tessellation.
/**
* @param vertices [[x1, y1], [x2, y2], …]
* @returns polygons [[[x1, y1], [x2, y2], …], …]
*/
d3.geom.voronoi = function(vertices) {
var polygons = vertices.map(function() { return []; });
d3_voronoi_tessellate(vertices, function(e) {
var s1,
s2,
x1,
x2,
y1,
y2;
if (e.a === 1 && e.b >= 0) {
s1 = e.ep.r;
s2 = e.ep.l;
} else {
s1 = e.ep.l;
s2 = e.ep.r;
}
if (e.a === 1) {
y1 = s1 ? s1.y : -1e6;
x1 = e.c - e.b * y1;
y2 = s2 ? s2.y : 1e6;
x2 = e.c - e.b * y2;
} else {
x1 = s1 ? s1.x : -1e6;
y1 = e.c - e.a * x1;
x2 = s2 ? s2.x : 1e6;
y2 = e.c - e.a * x2;
}
var v1 = [x1, y1],
v2 = [x2, y2];
polygons[e.region.l.index].push(v1, v2);
polygons[e.region.r.index].push(v1, v2);
});
// Reconnect the polygon segments into counterclockwise loops.
return polygons.map(function(polygon, i) {
var cx = vertices[i][0],
cy = vertices[i][1];
polygon.forEach(function(v) {
v.angle = Math.atan2(v[0] - cx, v[1] - cy);
});
return polygon.sort(function(a, b) {
return a.angle - b.angle;
}).filter(function(d, i) {
return !i || (d.angle - polygon[i - 1].angle > 1e-10);
});
});
};
var d3_voronoi_opposite = {"l": "r", "r": "l"};
function d3_voronoi_tessellate(vertices, callback) {
var Sites = {
list: vertices
.map(function(v, i) {
return {
index: i,
x: v[0],
y: v[1]
};
})
.sort(function(a, b) {
return a.y < b.y ? -1
: a.y > b.y ? 1
: a.x < b.x ? -1
: a.x > b.x ? 1
: 0;
}),
bottomSite: null
};
var EdgeList = {
list: [],
leftEnd: null,
rightEnd: null,
init: function() {
EdgeList.leftEnd = EdgeList.createHalfEdge(null, "l");
EdgeList.rightEnd = EdgeList.createHalfEdge(null, "l");
EdgeList.leftEnd.r = EdgeList.rightEnd;
EdgeList.rightEnd.l = EdgeList.leftEnd;
EdgeList.list.unshift(EdgeList.leftEnd, EdgeList.rightEnd);
},
createHalfEdge: function(edge, side) {
return {
edge: edge,
side: side,
vertex: null,
"l": null,
"r": null
};
},
insert: function(lb, he) {
he.l = lb;
he.r = lb.r;
lb.r.l = he;
lb.r = he;
},
leftBound: function(p) {
var he = EdgeList.leftEnd;
do {
he = he.r;
} while (he != EdgeList.rightEnd && Geom.rightOf(he, p));
he = he.l;
return he;
},
del: function(he) {
he.l.r = he.r;
he.r.l = he.l;
he.edge = null;
},
right: function(he) {
return he.r;
},
left: function(he) {
return he.l;
},
leftRegion: function(he) {
return he.edge == null
? Sites.bottomSite
: he.edge.region[he.side];
},
rightRegion: function(he) {
return he.edge == null
? Sites.bottomSite
: he.edge.region[d3_voronoi_opposite[he.side]];
}
};
var Geom = {
bisect: function(s1, s2) {
var newEdge = {
region: {"l": s1, "r": s2},
ep: {"l": null, "r": null}
};
var dx = s2.x - s1.x,
dy = s2.y - s1.y,
adx = dx > 0 ? dx : -dx,
ady = dy > 0 ? dy : -dy;
newEdge.c = s1.x * dx + s1.y * dy
+ (dx * dx + dy * dy) * .5;
if (adx > ady) {
newEdge.a = 1;
newEdge.b = dy / dx;
newEdge.c /= dx;
} else {
newEdge.b = 1;
newEdge.a = dx / dy;
newEdge.c /= dy;
}
return newEdge;
},
intersect: function(el1, el2) {
var e1 = el1.edge,
e2 = el2.edge;
if (!e1 || !e2 || (e1.region.r == e2.region.r)) {
return null;
}
var d = (e1.a * e2.b) - (e1.b * e2.a);
if (Math.abs(d) < 1e-10) {
return null;
}
var xint = (e1.c * e2.b - e2.c * e1.b) / d,
yint = (e2.c * e1.a - e1.c * e2.a) / d,
e1r = e1.region.r,
e2r = e2.region.r,
el,
e;
if ((e1r.y < e2r.y) ||
(e1r.y == e2r.y && e1r.x < e2r.x)) {
el = el1;
e = e1;
} else {
el = el2;
e = e2;
}
var rightOfSite = (xint >= e.region.r.x);
if ((rightOfSite && (el.side === "l")) ||
(!rightOfSite && (el.side === "r"))) {
return null;
}
return {
x: xint,
y: yint
};
},
rightOf: function(he, p) {
var e = he.edge,
topsite = e.region.r,
rightOfSite = (p.x > topsite.x);
if (rightOfSite && (he.side === "l")) {
return 1;
}
if (!rightOfSite && (he.side === "r")) {
return 0;
}
if (e.a === 1) {
var dyp = p.y - topsite.y,
dxp = p.x - topsite.x,
fast = 0,
above = 0;
if ((!rightOfSite && (e.b < 0)) ||
(rightOfSite && (e.b >= 0))) {
above = fast = (dyp >= e.b * dxp);
} else {
above = ((p.x + p.y * e.b) > e.c);
if (e.b < 0) {
above = !above;
}
if (!above) {
fast = 1;
}
}
if (!fast) {
var dxs = topsite.x - e.region.l.x;
above = (e.b * (dxp * dxp - dyp * dyp)) <
(dxs * dyp * (1 + 2 * dxp / dxs + e.b * e.b));
if (e.b < 0) {
above = !above;
}
}
} else /* e.b == 1 */ {
var yl = e.c - e.a * p.x,
t1 = p.y - yl,
t2 = p.x - topsite.x,
t3 = yl - topsite.y;
above = (t1 * t1) > (t2 * t2 + t3 * t3);
}
return he.side === "l" ? above : !above;
},
endPoint: function(edge, side, site) {
edge.ep[side] = site;
if (!edge.ep[d3_voronoi_opposite[side]]) return;
callback(edge);
},
distance: function(s, t) {
var dx = s.x - t.x,
dy = s.y - t.y;
return Math.sqrt(dx * dx + dy * dy);
}
};
var EventQueue = {
list: [],
insert: function(he, site, offset) {
he.vertex = site;
he.ystar = site.y + offset;
for (var i=0, list=EventQueue.list, l=list.length; i<l; i++) {
var next = list[i];
if (he.ystar > next.ystar ||
(he.ystar == next.ystar &&
site.x > next.vertex.x)) {
continue;
} else {
break;
}
}
list.splice(i, 0, he);
},
del: function(he) {
for (var i=0, ls=EventQueue.list, l=ls.length; i<l && (ls[i] != he); ++i) {}
ls.splice(i, 1);
},
empty: function() { return EventQueue.list.length === 0; },
nextEvent: function(he) {
for (var i=0, ls=EventQueue.list, l=ls.length; i<l; ++i) {
if (ls[i] == he) return ls[i+1];
}
return null;
},
min: function() {
var elem = EventQueue.list[0];
return {
x: elem.vertex.x,
y: elem.ystar
};
},
extractMin: function() {
return EventQueue.list.shift();
}
};
EdgeList.init();
Sites.bottomSite = Sites.list.shift();
var newSite = Sites.list.shift(), newIntStar;
var lbnd, rbnd, llbnd, rrbnd, bisector;
var bot, top, temp, p, v;
var e, pm;
while (true) {
if (!EventQueue.empty()) {
newIntStar = EventQueue.min();
}
if (newSite && (EventQueue.empty()
|| newSite.y < newIntStar.y
|| (newSite.y == newIntStar.y
&& newSite.x < newIntStar.x))) { //new site is smallest
lbnd = EdgeList.leftBound(newSite);
rbnd = EdgeList.right(lbnd);
bot = EdgeList.rightRegion(lbnd);
e = Geom.bisect(bot, newSite);
bisector = EdgeList.createHalfEdge(e, "l");
EdgeList.insert(lbnd, bisector);
p = Geom.intersect(lbnd, bisector);
if (p) {
EventQueue.del(lbnd);
EventQueue.insert(lbnd, p, Geom.distance(p, newSite));
}
lbnd = bisector;
bisector = EdgeList.createHalfEdge(e, "r");
EdgeList.insert(lbnd, bisector);
p = Geom.intersect(bisector, rbnd);
if (p) {
EventQueue.insert(bisector, p, Geom.distance(p, newSite));
}
newSite = Sites.list.shift();
} else if (!EventQueue.empty()) { //intersection is smallest
lbnd = EventQueue.extractMin();
llbnd = EdgeList.left(lbnd);
rbnd = EdgeList.right(lbnd);
rrbnd = EdgeList.right(rbnd);
bot = EdgeList.leftRegion(lbnd);
top = EdgeList.rightRegion(rbnd);
v = lbnd.vertex;
Geom.endPoint(lbnd.edge, lbnd.side, v);
Geom.endPoint(rbnd.edge, rbnd.side, v);
EdgeList.del(lbnd);
EventQueue.del(rbnd);
EdgeList.del(rbnd);
pm = "l";
if (bot.y > top.y) {
temp = bot;
bot = top;
top = temp;
pm = "r";
}
e = Geom.bisect(bot, top);
bisector = EdgeList.createHalfEdge(e, pm);
EdgeList.insert(llbnd, bisector);
Geom.endPoint(e, d3_voronoi_opposite[pm], v);
p = Geom.intersect(llbnd, bisector);
if (p) {
EventQueue.del(llbnd);
EventQueue.insert(llbnd, p, Geom.distance(p, bot));
}
p = Geom.intersect(bisector, rrbnd);
if (p) {
EventQueue.insert(bisector, p, Geom.distance(p, bot));
}
} else {
break;
}
}//end while
for (lbnd = EdgeList.right(EdgeList.leftEnd);
lbnd != EdgeList.rightEnd;
lbnd = EdgeList.right(lbnd)) {
callback(lbnd.edge);
}
}
/**
* @param vertices [[x1, y1], [x2, y2], …]
* @returns triangles [[[x1, y1], [x2, y2], [x3, y3]], …]
*/
d3.geom.delaunay = function(vertices) {
var edges = vertices.map(function() { return []; }),
triangles = [];
// Use the Voronoi tessellation to determine Delaunay edges.
d3_voronoi_tessellate(vertices, function(e) {
edges[e.region.l.index].push(vertices[e.region.r.index]);
});
// Reconnect the edges into counterclockwise triangles.
edges.forEach(function(edge, i) {
var v = vertices[i],
cx = v[0],
cy = v[1];
edge.forEach(function(v) {
v.angle = Math.atan2(v[0] - cx, v[1] - cy);
});
edge.sort(function(a, b) {
return a.angle - b.angle;
});
for (var j = 0, m = edge.length - 1; j < m; j++) {
triangles.push([v, edge[j], edge[j + 1]]);
}
});
return triangles;
};
// Constructs a new quadtree for the specified array of points. A quadtree is a
// two-dimensional recursive spatial subdivision. This implementation uses
// square partitions, dividing each square into four equally-sized squares. Each
// point exists in a unique node; if multiple points are in the same position,
// some points may be stored on internal nodes rather than leaf nodes. Quadtrees
// can be used to accelerate various spatial operations, such as the Barnes-Hut
// approximation for computing n-body forces, or collision detection.
d3.geom.quadtree = function(points, x1, y1, x2, y2) {
var p,
i = -1,
n = points.length;
// Type conversion for deprecated API.
if (n && isNaN(points[0].x)) points = points.map(d3_geom_quadtreePoint);
// Allow bounds to be specified explicitly.
if (arguments.length < 5) {
if (arguments.length === 3) {
y2 = x2 = y1;
y1 = x1;
} else {
x1 = y1 = Infinity;
x2 = y2 = -Infinity;
// Compute bounds.
while (++i < n) {
p = points[i];
if (p.x < x1) x1 = p.x;
if (p.y < y1) y1 = p.y;
if (p.x > x2) x2 = p.x;
if (p.y > y2) y2 = p.y;
}
// Squarify the bounds.
var dx = x2 - x1,
dy = y2 - y1;
if (dx > dy) y2 = y1 + dx;
else x2 = x1 + dy;
}
}
// Recursively inserts the specified point p at the node n or one of its
// descendants. The bounds are defined by [x1, x2] and [y1, y2].
function insert(n, p, x1, y1, x2, y2) {
if (isNaN(p.x) || isNaN(p.y)) return; // ignore invalid points
if (n.leaf) {
var v = n.point;
if (v) {
// If the point at this leaf node is at the same position as the new
// point we are adding, we leave the point associated with the
// internal node while adding the new point to a child node. This
// avoids infinite recursion.
if ((Math.abs(v.x - p.x) + Math.abs(v.y - p.y)) < .01) {
insertChild(n, p, x1, y1, x2, y2);
} else {
n.point = null;
insertChild(n, v, x1, y1, x2, y2);
insertChild(n, p, x1, y1, x2, y2);
}
} else {
n.point = p;
}
} else {
insertChild(n, p, x1, y1, x2, y2);
}
}
// Recursively inserts the specified point p into a descendant of node n. The
// bounds are defined by [x1, x2] and [y1, y2].
function insertChild(n, p, x1, y1, x2, y2) {
// Compute the split point, and the quadrant in which to insert p.
var sx = (x1 + x2) * .5,
sy = (y1 + y2) * .5,
right = p.x >= sx,
bottom = p.y >= sy,
i = (bottom << 1) + right;
// Recursively insert into the child node.
n.leaf = false;
n = n.nodes[i] || (n.nodes[i] = d3_geom_quadtreeNode());
// Update the bounds as we recurse.
if (right) x1 = sx; else x2 = sx;
if (bottom) y1 = sy; else y2 = sy;
insert(n, p, x1, y1, x2, y2);
}
// Create the root node.
var root = d3_geom_quadtreeNode();
root.add = function(p) {
insert(root, p, x1, y1, x2, y2);
};
root.visit = function(f) {
d3_geom_quadtreeVisit(f, root, x1, y1, x2, y2);
};
// Insert all points.
points.forEach(root.add);
return root;
};
function d3_geom_quadtreeNode() {
return {
leaf: true,
nodes: [],
point: null
};
}
function d3_geom_quadtreeVisit(f, node, x1, y1, x2, y2) {
if (!f(node, x1, y1, x2, y2)) {
var sx = (x1 + x2) * .5,
sy = (y1 + y2) * .5,
children = node.nodes;
if (children[0]) d3_geom_quadtreeVisit(f, children[0], x1, y1, sx, sy);
if (children[1]) d3_geom_quadtreeVisit(f, children[1], sx, y1, x2, sy);
if (children[2]) d3_geom_quadtreeVisit(f, children[2], x1, sy, sx, y2);
if (children[3]) d3_geom_quadtreeVisit(f, children[3], sx, sy, x2, y2);
}
}
function d3_geom_quadtreePoint(p) {
return {
x: p[0],
y: p[1]
};
}
d3.time = {};
var d3_time = Date;
function d3_time_utc() {
this._ = new Date(arguments.length > 1
? Date.UTC.apply(this, arguments)
: arguments[0]);
}
d3_time_utc.prototype = {
getDate: function() { return this._.getUTCDate(); },
getDay: function() { return this._.getUTCDay(); },
getFullYear: function() { return this._.getUTCFullYear(); },
getHours: function() { return this._.getUTCHours(); },
getMilliseconds: function() { return this._.getUTCMilliseconds(); },
getMinutes: function() { return this._.getUTCMinutes(); },
getMonth: function() { return this._.getUTCMonth(); },
getSeconds: function() { return this._.getUTCSeconds(); },
getTime: function() { return this._.getTime(); },
getTimezoneOffset: function() { return 0; },
valueOf: function() { return this._.valueOf(); },
setDate: function() { d3_time_prototype.setUTCDate.apply(this._, arguments); },
setDay: function() { d3_time_prototype.setUTCDay.apply(this._, arguments); },
setFullYear: function() { d3_time_prototype.setUTCFullYear.apply(this._, arguments); },
setHours: function() { d3_time_prototype.setUTCHours.apply(this._, arguments); },
setMilliseconds: function() { d3_time_prototype.setUTCMilliseconds.apply(this._, arguments); },
setMinutes: function() { d3_time_prototype.setUTCMinutes.apply(this._, arguments); },
setMonth: function() { d3_time_prototype.setUTCMonth.apply(this._, arguments); },
setSeconds: function() { d3_time_prototype.setUTCSeconds.apply(this._, arguments); },
setTime: function() { d3_time_prototype.setTime.apply(this._, arguments); }
};
var d3_time_prototype = Date.prototype;
d3.time.format = function(template) {
var n = template.length;
function format(date) {
var string = [],
i = -1,
j = 0,
c,
f;
while (++i < n) {
if (template.charCodeAt(i) == 37) {
string.push(
template.substring(j, i),
(f = d3_time_formats[c = template.charAt(++i)])
? f(date) : c);
j = i + 1;
}
}
string.push(template.substring(j, i));
return string.join("");
}
format.parse = function(string) {
var d = {y: 1900, m: 0, d: 1, H: 0, M: 0, S: 0, L: 0},
i = d3_time_parse(d, template, string, 0);
if (i != string.length) return null;
// The am-pm flag is 0 for AM, and 1 for PM.
if ("p" in d) d.H = d.H % 12 + d.p * 12;
var date = new d3_time();
date.setFullYear(d.y, d.m, d.d);
date.setHours(d.H, d.M, d.S, d.L);
return date;
};
format.toString = function() {
return template;
};
return format;
};
function d3_time_parse(date, template, string, j) {
var c,
p,
i = 0,
n = template.length,
m = string.length;
while (i < n) {
if (j >= m) return -1;
c = template.charCodeAt(i++);
if (c == 37) {
p = d3_time_parsers[template.charAt(i++)];
if (!p || ((j = p(date, string, j)) < 0)) return -1;
} else if (c != string.charCodeAt(j++)) {
return -1;
}
}
return j;
}
var d3_time_zfill2 = d3.format("02d"),
d3_time_zfill3 = d3.format("03d"),
d3_time_zfill4 = d3.format("04d"),
d3_time_sfill2 = d3.format("2d");
var d3_time_formats = {
a: function(d) { return d3_time_weekdays[d.getDay()].substring(0, 3); },
A: function(d) { return d3_time_weekdays[d.getDay()]; },
b: function(d) { return d3_time_months[d.getMonth()].substring(0, 3); },
B: function(d) { return d3_time_months[d.getMonth()]; },
c: d3.time.format("%a %b %e %H:%M:%S %Y"),
d: function(d) { return d3_time_zfill2(d.getDate()); },
e: function(d) { return d3_time_sfill2(d.getDate()); },
H: function(d) { return d3_time_zfill2(d.getHours()); },
I: function(d) { return d3_time_zfill2(d.getHours() % 12 || 12); },
j: function(d) { return d3_time_zfill3(1 + d3.time.dayOfYear(d)); },
L: function(d) { return d3_time_zfill3(d.getMilliseconds()); },
m: function(d) { return d3_time_zfill2(d.getMonth() + 1); },
M: function(d) { return d3_time_zfill2(d.getMinutes()); },
p: function(d) { return d.getHours() >= 12 ? "PM" : "AM"; },
S: function(d) { return d3_time_zfill2(d.getSeconds()); },
U: function(d) { return d3_time_zfill2(d3.time.sundayOfYear(d)); },
w: function(d) { return d.getDay(); },
W: function(d) { return d3_time_zfill2(d3.time.mondayOfYear(d)); },
x: d3.time.format("%m/%d/%y"),
X: d3.time.format("%H:%M:%S"),
y: function(d) { return d3_time_zfill2(d.getFullYear() % 100); },
Y: function(d) { return d3_time_zfill4(d.getFullYear() % 10000); },
Z: d3_time_zone,
"%": function(d) { return "%"; }
};
var d3_time_parsers = {
a: d3_time_parseWeekdayAbbrev,
A: d3_time_parseWeekday,
b: d3_time_parseMonthAbbrev,
B: d3_time_parseMonth,
c: d3_time_parseLocaleFull,
d: d3_time_parseDay,
e: d3_time_parseDay,
H: d3_time_parseHour24,
I: d3_time_parseHour24,
// j: function(d, s, i) { /*TODO day of year [001,366] */ return i; },
L: d3_time_parseMilliseconds,
m: d3_time_parseMonthNumber,
M: d3_time_parseMinutes,
p: d3_time_parseAmPm,
S: d3_time_parseSeconds,
// U: function(d, s, i) { /*TODO week number (sunday) [00,53] */ return i; },
// w: function(d, s, i) { /*TODO weekday [0,6] */ return i; },
// W: function(d, s, i) { /*TODO week number (monday) [00,53] */ return i; },
x: d3_time_parseLocaleDate,
X: d3_time_parseLocaleTime,
y: d3_time_parseYear,
Y: d3_time_parseFullYear
// ,
// Z: function(d, s, i) { /*TODO time zone */ return i; },
// "%": function(d, s, i) { /*TODO literal % */ return i; }
};
// Note: weekday is validated, but does not set the date.
function d3_time_parseWeekdayAbbrev(date, string, i) {
return d3_time_weekdayAbbrevRe.test(string.substring(i, i += 3)) ? i : -1;
}
// Note: weekday is validated, but does not set the date.
function d3_time_parseWeekday(date, string, i) {
d3_time_weekdayRe.lastIndex = 0;
var n = d3_time_weekdayRe.exec(string.substring(i, i + 10));
return n ? i += n[0].length : -1;
}
var d3_time_weekdayAbbrevRe = /^(?:sun|mon|tue|wed|thu|fri|sat)/i,
d3_time_weekdayRe = /^(?:Sunday|Monday|Tuesday|Wednesday|Thursday|Friday|Saturday)/i,
d3_time_weekdays = ["Sunday", "Monday", "Tuesday", "Wednesday", "Thursday", "Friday", "Saturday"];
function d3_time_parseMonthAbbrev(date, string, i) {
var n = d3_time_monthAbbrevLookup.get(string.substring(i, i += 3).toLowerCase());
return n == null ? -1 : (date.m = n, i);
}
var d3_time_monthAbbrevLookup = d3.map({
jan: 0,
feb: 1,
mar: 2,
apr: 3,
may: 4,
jun: 5,
jul: 6,
aug: 7,
sep: 8,
oct: 9,
nov: 10,
dec: 11
});
function d3_time_parseMonth(date, string, i) {
d3_time_monthRe.lastIndex = 0;
var n = d3_time_monthRe.exec(string.substring(i, i + 12));
return n ? (date.m = d3_time_monthLookup.get(n[0].toLowerCase()), i += n[0].length) : -1;
}
var d3_time_monthRe = /^(?:January|February|March|April|May|June|July|August|September|October|November|December)/ig;
var d3_time_monthLookup = d3.map({
january: 0,
february: 1,
march: 2,
april: 3,
may: 4,
june: 5,
july: 6,
august: 7,
september: 8,
october: 9,
november: 10,
december: 11
});
var d3_time_months = [
"January",
"February",
"March",
"April",
"May",
"June",
"July",
"August",
"September",
"October",
"November",
"December"
];
function d3_time_parseLocaleFull(date, string, i) {
return d3_time_parse(date, d3_time_formats.c.toString(), string, i);
}
function d3_time_parseLocaleDate(date, string, i) {
return d3_time_parse(date, d3_time_formats.x.toString(), string, i);
}
function d3_time_parseLocaleTime(date, string, i) {
return d3_time_parse(date, d3_time_formats.X.toString(), string, i);
}
function d3_time_parseFullYear(date, string, i) {
d3_time_numberRe.lastIndex = 0;
var n = d3_time_numberRe.exec(string.substring(i, i + 4));
return n ? (date.y = +n[0], i += n[0].length) : -1;
}
function d3_time_parseYear(date, string, i) {
d3_time_numberRe.lastIndex = 0;
var n = d3_time_numberRe.exec(string.substring(i, i + 2));
return n ? (date.y = d3_time_century() + +n[0], i += n[0].length) : -1;
}
function d3_time_century() {
return ~~(new Date().getFullYear() / 1000) * 1000;
}
function d3_time_parseMonthNumber(date, string, i) {
d3_time_numberRe.lastIndex = 0;
var n = d3_time_numberRe.exec(string.substring(i, i + 2));
return n ? (date.m = n[0] - 1, i += n[0].length) : -1;
}
function d3_time_parseDay(date, string, i) {
d3_time_numberRe.lastIndex = 0;
var n = d3_time_numberRe.exec(string.substring(i, i + 2));
return n ? (date.d = +n[0], i += n[0].length) : -1;
}
// Note: we don't validate that the hour is in the range [0,23] or [1,12].
function d3_time_parseHour24(date, string, i) {
d3_time_numberRe.lastIndex = 0;
var n = d3_time_numberRe.exec(string.substring(i, i + 2));
return n ? (date.H = +n[0], i += n[0].length) : -1;
}
function d3_time_parseMinutes(date, string, i) {
d3_time_numberRe.lastIndex = 0;
var n = d3_time_numberRe.exec(string.substring(i, i + 2));
return n ? (date.M = +n[0], i += n[0].length) : -1;
}
function d3_time_parseSeconds(date, string, i) {
d3_time_numberRe.lastIndex = 0;
var n = d3_time_numberRe.exec(string.substring(i, i + 2));
return n ? (date.S = +n[0], i += n[0].length) : -1;
}
function d3_time_parseMilliseconds(date, string, i) {
d3_time_numberRe.lastIndex = 0;
var n = d3_time_numberRe.exec(string.substring(i, i + 3));
return n ? (date.L = +n[0], i += n[0].length) : -1;
}
// Note: we don't look at the next directive.
var d3_time_numberRe = /\s*\d+/;
function d3_time_parseAmPm(date, string, i) {
var n = d3_time_amPmLookup.get(string.substring(i, i += 2).toLowerCase());
return n == null ? -1 : (date.p = n, i);
}
var d3_time_amPmLookup = d3.map({
am: 0,
pm: 1
});
// TODO table of time zone offset names?
function d3_time_zone(d) {
var z = d.getTimezoneOffset(),
zs = z > 0 ? "-" : "+",
zh = ~~(Math.abs(z) / 60),
zm = Math.abs(z) % 60;
return zs + d3_time_zfill2(zh) + d3_time_zfill2(zm);
}
d3.time.format.utc = function(template) {
var local = d3.time.format(template);
function format(date) {
try {
d3_time = d3_time_utc;
var utc = new d3_time();
utc._ = date;
return local(utc);
} finally {
d3_time = Date;
}
}
format.parse = function(string) {
try {
d3_time = d3_time_utc;
var date = local.parse(string);
return date && date._;
} finally {
d3_time = Date;
}
};
format.toString = local.toString;
return format;
};
var d3_time_formatIso = d3.time.format.utc("%Y-%m-%dT%H:%M:%S.%LZ");
d3.time.format.iso = Date.prototype.toISOString ? d3_time_formatIsoNative : d3_time_formatIso;
function d3_time_formatIsoNative(date) {
return date.toISOString();
}
d3_time_formatIsoNative.parse = function(string) {
return new Date(string);
};
d3_time_formatIsoNative.toString = d3_time_formatIso.toString;
function d3_time_interval(local, step, number) {
function round(date) {
var d0 = local(date), d1 = offset(d0, 1);
return date - d0 < d1 - date ? d0 : d1;
}
function ceil(date) {
step(date = local(new d3_time(date - 1)), 1);
return date;
}
function offset(date, k) {
step(date = new d3_time(+date), k);
return date;
}
function range(t0, t1, dt) {
var time = ceil(t0), times = [];
if (dt > 1) {
while (time < t1) {
if (!(number(time) % dt)) times.push(new Date(+time));
step(time, 1);
}
} else {
while (time < t1) times.push(new Date(+time)), step(time, 1);
}
return times;
}
function range_utc(t0, t1, dt) {
try {
d3_time = d3_time_utc;
var utc = new d3_time_utc();
utc._ = t0;
return range(utc, t1, dt);
} finally {
d3_time = Date;
}
}
local.floor = local;
local.round = round;
local.ceil = ceil;
local.offset = offset;
local.range = range;
var utc = local.utc = d3_time_interval_utc(local);
utc.floor = utc;
utc.round = d3_time_interval_utc(round);
utc.ceil = d3_time_interval_utc(ceil);
utc.offset = d3_time_interval_utc(offset);
utc.range = range_utc;
return local;
}
function d3_time_interval_utc(method) {
return function(date, k) {
try {
d3_time = d3_time_utc;
var utc = new d3_time_utc();
utc._ = date;
return method(utc, k)._;
} finally {
d3_time = Date;
}
};
}
d3.time.second = d3_time_interval(function(date) {
return new d3_time(Math.floor(date / 1e3) * 1e3);
}, function(date, offset) {
date.setTime(date.getTime() + Math.floor(offset) * 1e3); // DST breaks setSeconds
}, function(date) {
return date.getSeconds();
});
d3.time.seconds = d3.time.second.range;
d3.time.seconds.utc = d3.time.second.utc.range;
d3.time.minute = d3_time_interval(function(date) {
return new d3_time(Math.floor(date / 6e4) * 6e4);
}, function(date, offset) {
date.setTime(date.getTime() + Math.floor(offset) * 6e4); // DST breaks setMinutes
}, function(date) {
return date.getMinutes();
});
d3.time.minutes = d3.time.minute.range;
d3.time.minutes.utc = d3.time.minute.utc.range;
d3.time.hour = d3_time_interval(function(date) {
var timezone = date.getTimezoneOffset() / 60;
return new d3_time((Math.floor(date / 36e5 - timezone) + timezone) * 36e5);
}, function(date, offset) {
date.setTime(date.getTime() + Math.floor(offset) * 36e5); // DST breaks setHours
}, function(date) {
return date.getHours();
});
d3.time.hours = d3.time.hour.range;
d3.time.hours.utc = d3.time.hour.utc.range;
d3.time.day = d3_time_interval(function(date) {
return new d3_time(date.getFullYear(), date.getMonth(), date.getDate());
}, function(date, offset) {
date.setDate(date.getDate() + offset);
}, function(date) {
return date.getDate() - 1;
});
d3.time.days = d3.time.day.range;
d3.time.days.utc = d3.time.day.utc.range;
d3.time.dayOfYear = function(date) {
var year = d3.time.year(date);
return Math.floor((date - year) / 864e5 - (date.getTimezoneOffset() - year.getTimezoneOffset()) / 1440);
};
d3_time_weekdays.forEach(function(day, i) {
day = day.toLowerCase();
i = 7 - i;
var interval = d3.time[day] = d3_time_interval(function(date) {
(date = d3.time.day(date)).setDate(date.getDate() - (date.getDay() + i) % 7);
return date;
}, function(date, offset) {
date.setDate(date.getDate() + Math.floor(offset) * 7);
}, function(date) {
var day = d3.time.year(date).getDay();
return Math.floor((d3.time.dayOfYear(date) + (day + i) % 7) / 7) - (day !== i);
});
d3.time[day + "s"] = interval.range;
d3.time[day + "s"].utc = interval.utc.range;
d3.time[day + "OfYear"] = function(date) {
var day = d3.time.year(date).getDay();
return Math.floor((d3.time.dayOfYear(date) + (day + i) % 7) / 7);
};
});
d3.time.week = d3.time.sunday;
d3.time.weeks = d3.time.sunday.range;
d3.time.weeks.utc = d3.time.sunday.utc.range;
d3.time.weekOfYear = d3.time.sundayOfYear;
d3.time.month = d3_time_interval(function(date) {
return new d3_time(date.getFullYear(), date.getMonth(), 1);
}, function(date, offset) {
date.setMonth(date.getMonth() + offset);
}, function(date) {
return date.getMonth();
});
d3.time.months = d3.time.month.range;
d3.time.months.utc = d3.time.month.utc.range;
d3.time.year = d3_time_interval(function(date) {
return new d3_time(date.getFullYear(), 0, 1);
}, function(date, offset) {
date.setFullYear(date.getFullYear() + offset);
}, function(date) {
return date.getFullYear();
});
d3.time.years = d3.time.year.range;
d3.time.years.utc = d3.time.year.utc.range;
function d3_time_scale(linear, methods, format) {
function scale(x) {
return linear(x);
}
scale.invert = function(x) {
return d3_time_scaleDate(linear.invert(x));
};
scale.domain = function(x) {
if (!arguments.length) return linear.domain().map(d3_time_scaleDate);
linear.domain(x);
return scale;
};
scale.nice = function(m) {
var extent = d3_time_scaleExtent(scale.domain());
return scale.domain([m.floor(extent[0]), m.ceil(extent[1])]);
};
scale.ticks = function(m, k) {
var extent = d3_time_scaleExtent(scale.domain());
if (typeof m !== "function") {
var span = extent[1] - extent[0],
target = span / m,
i = d3.bisect(d3_time_scaleSteps, target);
if (i == d3_time_scaleSteps.length) return methods.year(extent, m);
if (!i) return linear.ticks(m).map(d3_time_scaleDate);
if (Math.log(target / d3_time_scaleSteps[i - 1]) < Math.log(d3_time_scaleSteps[i] / target)) --i;
m = methods[i];
k = m[1];
m = m[0].range;
}
return m(extent[0], new Date(+extent[1] + 1), k); // inclusive upper bound
};
scale.tickFormat = function() {
return format;
};
scale.copy = function() {
return d3_time_scale(linear.copy(), methods, format);
};
// TOOD expose d3_scale_linear_rebind?
return d3.rebind(scale, linear, "range", "rangeRound", "interpolate", "clamp");
}
// TODO expose d3_scaleExtent?
function d3_time_scaleExtent(domain) {
var start = domain[0], stop = domain[domain.length - 1];
return start < stop ? [start, stop] : [stop, start];
}
function d3_time_scaleDate(t) {
return new Date(t);
}
function d3_time_scaleFormat(formats) {
return function(date) {
var i = formats.length - 1, f = formats[i];
while (!f[1](date)) f = formats[--i];
return f[0](date);
};
}
function d3_time_scaleSetYear(y) {
var d = new Date(y, 0, 1);
d.setFullYear(y); // Y2K fail
return d;
}
function d3_time_scaleGetYear(d) {
var y = d.getFullYear(),
d0 = d3_time_scaleSetYear(y),
d1 = d3_time_scaleSetYear(y + 1);
return y + (d - d0) / (d1 - d0);
}
var d3_time_scaleSteps = [
1e3, // 1-second
5e3, // 5-second
15e3, // 15-second
3e4, // 30-second
6e4, // 1-minute
3e5, // 5-minute
9e5, // 15-minute
18e5, // 30-minute
36e5, // 1-hour
108e5, // 3-hour
216e5, // 6-hour
432e5, // 12-hour
864e5, // 1-day
1728e5, // 2-day
6048e5, // 1-week
2592e6, // 1-month
7776e6, // 3-month
31536e6 // 1-year
];
var d3_time_scaleLocalMethods = [
[d3.time.second, 1],
[d3.time.second, 5],
[d3.time.second, 15],
[d3.time.second, 30],
[d3.time.minute, 1],
[d3.time.minute, 5],
[d3.time.minute, 15],
[d3.time.minute, 30],
[d3.time.hour, 1],
[d3.time.hour, 3],
[d3.time.hour, 6],
[d3.time.hour, 12],
[d3.time.day, 1],
[d3.time.day, 2],
[d3.time.week, 1],
[d3.time.month, 1],
[d3.time.month, 3],
[d3.time.year, 1]
];
var d3_time_scaleLocalFormats = [
[d3.time.format("%Y"), function(d) { return true; }],
[d3.time.format("%B"), function(d) { return d.getMonth(); }],
[d3.time.format("%b %d"), function(d) { return d.getDate() != 1; }],
[d3.time.format("%a %d"), function(d) { return d.getDay() && d.getDate() != 1; }],
[d3.time.format("%I %p"), function(d) { return d.getHours(); }],
[d3.time.format("%I:%M"), function(d) { return d.getMinutes(); }],
[d3.time.format(":%S"), function(d) { return d.getSeconds(); }],
[d3.time.format(".%L"), function(d) { return d.getMilliseconds(); }]
];
var d3_time_scaleLinear = d3.scale.linear(),
d3_time_scaleLocalFormat = d3_time_scaleFormat(d3_time_scaleLocalFormats);
d3_time_scaleLocalMethods.year = function(extent, m) {
return d3_time_scaleLinear.domain(extent.map(d3_time_scaleGetYear)).ticks(m).map(d3_time_scaleSetYear);
};
d3.time.scale = function() {
return d3_time_scale(d3.scale.linear(), d3_time_scaleLocalMethods, d3_time_scaleLocalFormat);
};
var d3_time_scaleUTCMethods = d3_time_scaleLocalMethods.map(function(m) {
return [m[0].utc, m[1]];
});
var d3_time_scaleUTCFormats = [
[d3.time.format.utc("%Y"), function(d) { return true; }],
[d3.time.format.utc("%B"), function(d) { return d.getUTCMonth(); }],
[d3.time.format.utc("%b %d"), function(d) { return d.getUTCDate() != 1; }],
[d3.time.format.utc("%a %d"), function(d) { return d.getUTCDay() && d.getUTCDate() != 1; }],
[d3.time.format.utc("%I %p"), function(d) { return d.getUTCHours(); }],
[d3.time.format.utc("%I:%M"), function(d) { return d.getUTCMinutes(); }],
[d3.time.format.utc(":%S"), function(d) { return d.getUTCSeconds(); }],
[d3.time.format.utc(".%L"), function(d) { return d.getUTCMilliseconds(); }]
];
var d3_time_scaleUTCFormat = d3_time_scaleFormat(d3_time_scaleUTCFormats);
function d3_time_scaleUTCSetYear(y) {
var d = new Date(Date.UTC(y, 0, 1));
d.setUTCFullYear(y); // Y2K fail
return d;
}
function d3_time_scaleUTCGetYear(d) {
var y = d.getUTCFullYear(),
d0 = d3_time_scaleUTCSetYear(y),
d1 = d3_time_scaleUTCSetYear(y + 1);
return y + (d - d0) / (d1 - d0);
}
d3_time_scaleUTCMethods.year = function(extent, m) {
return d3_time_scaleLinear.domain(extent.map(d3_time_scaleUTCGetYear)).ticks(m).map(d3_time_scaleUTCSetYear);
};
d3.time.scale.utc = function() {
return d3_time_scale(d3.scale.linear(), d3_time_scaleUTCMethods, d3_time_scaleUTCFormat);
};
})();
Raw
index.html
<html>
<head>
<title>Interactive Line Graph</title>
<!--<script src="http://d3js.org/d3.v2.js"></script>-->
<script src="d3.v2.patched.js"></script>
<script src="http://code.jquery.com/jquery-1.7.2.min.js"></script>
<script src="sample_data.js"></script>
<script src="line-graph.js"></script>
<link rel="stylesheet" href="style.css" type="text/css">
<style>
body {
font-family: "Helvetica Neue", Helvetica;
}
p {
clear:both;
top: 20px;
}
div.aGraph {
clear:both;
margin-bottom: 30px;
}
</style>
</head>
<body>
<div id="graph1" class="aGraph" style="position:relative;width:100%;height:400px"></div>
<script>
/*
* Note how the 'data' object is added to here before rendering to provide decoration information.
* <p>
* This is purposefully done here instead of in data.js as an example of how data would come from a server
* and then have presentation information injected into it (rather than as separate arguments in another object)
* and passed into LineGraph.
*
* Also, CSS can be used to style colors etc, but this is also doable via the 'data' object so that the styling
* of different data points can be done in code which is often more natural for display names, legends, line colors etc
*/
// add presentation logic for 'data' object using optional data arguments
data["displayNames"] = ["Loss", "OutRestarts", "RetransSegs", "EstabResets", "InSegs", "OutSegs"];
data["colors"] = ["orange","purple", "red", "darkred", "#56ad0a", "#408000"];
data["scale"] = "log"
// create graph now that we've added presentation config
var l1 = new LineGraph({containerId: 'graph1', data: data});
</script>
</body>
</html>
Raw
line-graph.js
/**
* Create and draw a new line-graph.
*
* Arguments:
* containerId => id of container to insert SVG into [REQUIRED]
*
*/
function LineGraph(argsMap) {
/* *************************************************************** */
/* public methods */
/* *************************************************************** */
var self = this;
/**
* This allows appending new data points to the end of the lines and sliding them within the time window:
* - x-axis will slide to new range
* - new data will be added to the end of the lines
* - equivalent number of data points will be removed from beginning of lines
* - lines will be transitioned through horizontoal slide to show progression over time
*/
this.slideData = function(newData) {
// validate data
var tempData = processDataMap(newData);
//debug("Existing startTime: " + data.startTime + " endTime: " + data.endTime);
//debug("New startTime: " + tempData.startTime + " endTime: " + tempData.endTime);
// validate step is the same on each
if(tempData.step != newData.step) {
throw new Error("The step size on appended data must be the same as the existing data => " + data.step + " != " + tempData.step);
}
var numSteps = tempData.values[0].length;
tempData.values.forEach(function(dataArrays, i) {
var existingDataArrayForIndex = data.values[i];
dataArrays.forEach(function(v) {
// push each new value onto the existing data array
existingDataArrayForIndex.push(v);
// shift the front value off to compensate for what we just added
existingDataArrayForIndex.shift();
})
})
// shift domain by number of data elements we just added
// == numElements * step
data.startTime = new Date(data.startTime.getTime() + (data.step * numSteps));
data.endTime = tempData.endTime;
//debug("Updated startTime: " + data.startTime + " endTime: " + data.endTime);
/*
* The following transition implementation was learned from examples at http://bost.ocks.org/mike/path/
* In particular, view the HTML source for the last example on the page inside the tick() function.
*/
// redraw each of the lines
// Transitions are turned off on this since the small steps we're taking
// don't actually look good when animated and it uses unnecessary CPU
// The quick-steps look cleaner, and keep the axis/line in-sync instead of jittering
redrawAxes(false);
redrawLines(false);
// slide the lines left
graph.selectAll("g .lines path")
.attr("transform", "translate(-" + x(numSteps*data.step) + ")");
handleDataUpdate();
}
/**
* This does a full refresh of the data:
* - x-axis will slide to new range
* - lines will change in place
*
* This is not expected to be used much if at all.
*/
this.updateData = function(newData) {
// data is being replaced, not appended so we re-assign 'data'
data = processDataMap(newData);
// and then we rebind data.values to the lines
graph.selectAll("g .lines path").data(data.values)
// redraw (with transition)
redrawAxes(true);
// transition is 'false' for lines because the transition is really weird when the data significantly changes
// such as going from 700 points to 150 to 400
// and because of that we rebind the data anyways which doesn't work with transitions very well at all
redrawLines(false);
handleDataUpdate();
}
this.switchToPowerScale = function() {
yScale = 'pow';
redrawAxes(true);
redrawLines(true);
}
this.switchToLogScale = function() {
yScale = 'log';
redrawAxes(true);
redrawLines(true);
}
this.switchToLinearScale = function() {
yScale = 'linear';
redrawAxes(true);
redrawLines(true);
}
/* *************************************************************** */
/* private variables */
/* *************************************************************** */
// the div we insert the graph into
var containerId;
var container;
// functions we use to display and interact with the graphs and lines
var graph, x, y, xAxis, yAxisLeft, yAxisLeftDomainStart, maxYscale, linesGroup, linesGroupText, lines, lineFunction;
var yScale = 'pow'; // can be pow, log, linear
var scales = [['linear','Linear'], ['pow','Power'], ['log','Log']];
var hoverContainer, hoverLine, hoverLineXOffset, hoverLineYOffset, hoverLineGroup;
var legendFontSize = 12; // we can resize dynamically to make fit so we remember it here
// instance storage of data to be displayed
var data;
// define dimensions of graph
var margin = [-1, -1, -1, -1]; // margins (top, right, bottom, left)
var w, h; // width & height
var transitionDuration = 500;
var formatNumber = d3.format(",.0f") // for formatting integers
var tickFormatForLogScale = function(d) { return formatNumber(d) };
// used to track if the user is interacting via mouse/finger instead of trying to determine
// by analyzing various element class names to see if they are visible or not
var userCurrentlyInteracting = false;
var currentUserPositionX = -1;
/* *************************************************************** */
/* initialization and validation */
/* *************************************************************** */
var _init = function() {
// required variables that we'll throw an error on if we don't find
containerId = getRequiredVar(argsMap, 'containerId');
container = document.querySelector('#' + containerId);
// assign instance vars from dataMap
data = processDataMap(getRequiredVar(argsMap, 'data'));
/* set the default scale */
yScale = data.scale;
// margins with defaults
margin[0] = getOptionalVar(argsMap, 'marginTop', 20) // marginTop allows fitting the actions, date and top of axis labels
margin[1] = getOptionalVar(argsMap, 'marginRight', 20)
margin[2] = getOptionalVar(argsMap, 'marginBottom', 35) // marginBottom allows fitting the legend along the bottom
margin[3] = getOptionalVar(argsMap, 'marginLeft', 80) // marginLeft allows fitting the axis labels
initDimensions();
createGraph()
//debug("Initialization successful for container: " + containerId)
// window resize listener
// de-dupe logic from http://stackoverflow.com/questions/667426/javascript-resize-event-firing-multiple-times-while-dragging-the-resize-handle/668185#668185
var TO = false;
$(window).resize(function(){
if(TO !== false)
clearTimeout(TO);
TO = setTimeout(handleWindowResizeEvent, 200); //200 is time in miliseconds
});
}
/* *************************************************************** */
/* private methods */
/* *************************************************************** */
/*
* Return a validated data map
*
* Expects a map like this:
* {"start": 1335035400000, "end": 1335294600000, "step": 300000, "values": [[28,22,45,65,34], [45,23,23,45,65]]}
*/
var processDataMap = function(dataMap) {
// assign data values to plot over time
var dataValues = getRequiredVar(dataMap, 'values', "The data object must contain a 'values' value with a data array.")
var startTime = new Date(getRequiredVar(dataMap, 'start', "The data object must contain a 'start' value with the start time in milliseconds since epoch."))
var endTime = new Date(getRequiredVar(dataMap, 'end', "The data object must contain an 'end' value with the end time in milliseconds since epoch."))
var step = getRequiredVar(dataMap, 'step', "The data object must contain a 'step' value with the time in milliseconds between each data value.")
var names = getRequiredVar(dataMap, 'names', "The data object must contain a 'names' array with the same length as 'values' with a name for each data value array.")
var displayNames = getOptionalVar(dataMap, 'displayNames', names);
var colors = getOptionalVar(dataMap, 'colors', []);
var maxValues = [];
/* copy the dataValues array, do NOT assign the reference otherwise we modify the original source when we shift/push data */
var newDataValues = [];
dataValues.forEach(function (v, i) {
newDataValues[i] = v.slice(0);
maxValues[i] = d3.max(newDataValues[i])
})
if(colors.length == 0) {
displayNames.forEach(function (v, i) {
// set the default
colors[i] = "black";
})
}
return {
"values" : newDataValues,
"startTime" : startTime,
"endTime" : endTime,
"step" : step,
"names" : names,
"displayNames": displayNames,
"colors": colors,
"scale" : getOptionalVar(dataMap, 'scale', yScale),
"maxValues" : maxValues
}
}
var redrawAxes = function(withTransition) {
initY();
initX();
if(withTransition) {
// slide x-axis to updated location
graph.selectAll("g .x.axis").transition()
.duration(transitionDuration)
.ease("linear")
.call(xAxis)
// slide y-axis to updated location
graph.selectAll("g .y.axis").transition()
.duration(transitionDuration)
.ease("linear")
.call(yAxisLeft)
} else {
// slide x-axis to updated location
graph.selectAll("g .x.axis")
.call(xAxis)
// slide y-axis to updated location
graph.selectAll("g .y.axis")
.call(yAxisLeft)
}
}
var redrawLines = function(withTransition) {
if(withTransition) {
graph.selectAll("g .lines path")
.transition()
.duration(transitionDuration)
.ease("linear")
.attr("d", lineFunction)
.attr("transform", null);
} else {
graph.selectAll("g .lines path")
.attr("d", lineFunction)
.attr("transform", null);
}
}
/*
* Allow re-initializing the y function at any time.
* - it will properly determine what scale is being used based on last user choice (via public switchScale methods)
*/
var initY = function() {
maxYscale = calculateMaxY(data)
//debug("initY => maxYscale: " + maxYscale);
if(yScale == 'pow') {
y = d3.scale.pow().exponent(0.3).domain([0, maxYscale]).range([h, 0]).nice();
} else if(yScale == 'log') {
// we can't have 0 so will represent 0 with a very small number
// 0.1 works to represent 0, 0.01 breaks the tickFormatter
y = d3.scale.log().domain([0.1, maxYscale]).range([h, 0]).nice();
} else if(yScale == 'linear') {
y = d3.scale.linear().domain([0, maxYscale]).range([h, 0]).nice();
}
yAxisLeft = d3.svg.axis().scale(y).ticks(6, tickFormatForLogScale).orient("left");
}
/*
* Whenever we add/update data we want to re-calculate if the max Y scale has changed
*/
var calculateMaxY = function(data) {
// Y scale will fit values from 0-10 within pixels h-0 (Note the inverted domain for the y-scale: bigger is up!)
// we get the max of the max of values for the given index since we expect an array of arrays
//var maxY = d3.max(data.values, function(d) { return d3.max(d); });
// we can shortcut to data.maxValues since we've already calculated it in processDataMap
return d3.max(data.maxValues);
}
/*
* Allow re-initializing the x function at any time.
*/
var initX = function() {
// X scale starts at epoch time 1335035400000, ends at 1335294600000 with 300s increments
x = d3.time.scale().domain([data.startTime, data.endTime]).range([0, w]);
// create yAxis (with ticks)
xAxis = d3.svg.axis().scale(x).tickSize(-h).tickSubdivide(1);
// without ticks
//xAxis = d3.svg.axis().scale(x);
}
/**
* Creates the SVG elements and displays the line graph.
*
* Expects to be called once during instance initialization.
*/
var createGraph = function() {
// Add an SVG element with the desired dimensions and margin.
graph = d3.select("#" + containerId).append("svg:svg")
.attr("class", "line-graph")
.attr("width", w + margin[1] + margin[3])
.attr("height", h + margin[0] + margin[2])
.append("svg:g")
.attr("transform", "translate(" + margin[3] + "," + margin[0] + ")");
initX()
// Add the x-axis.
graph.append("svg:g")
.attr("class", "x axis")
.attr("transform", "translate(0," + h + ")")
.call(xAxis);
// y is all done in initY because we need to re-assign vars quite often to change scales
initY();
// Add the y-axis to the left
graph.append("svg:g")
.attr("class", "y axis")
.attr("transform", "translate(-10,0)")
.call(yAxisLeft);
// create line function used to plot our data
lineFunction = d3.svg.line()
// assign the X function to plot our line as we wish
.x(function(d,i) {
/*
* Our x value is defined by time and since our data doesn't have per-metric timestamps
* we calculate time as (startTime + the step between metrics * the index)
*
* We also reach out to the persisted 'data' object for time
* since the 'd' passed in here is one of the children, not the parent object
*/
var _x = x(data.startTime.getTime() + (data.step*i));
// verbose logging to show what's actually being done
//debug("Line X => index: " + i + " scale: " + _x)
// return the X coordinate where we want to plot this datapoint
return _x;
})
.y(function(d) {
if(yScale == 'log' && d < 0.1) {
// log scale can't have 0s, so we set it to the smallest value we set on y
d = 0.1;
}
var _y = y(d);
// verbose logging to show what's actually being done
//debug("Line Y => data: " + d + " scale: " + _y)
// return the Y coordinate where we want to plot this datapoint
return _y;
});
// append a group to contain all lines
lines = graph.append("svg:g")
.attr("class", "lines")
.selectAll("path")
.data(data.values); // bind the array of arrays
// persist this reference so we don't do the selector every mouse event
hoverContainer = container.querySelector('g .lines');
$(container).mouseleave(function(event) {
handleMouseOutGraph(event);
})
$(container).mousemove(function(event) {
handleMouseOverGraph(event);
})
// add a line group for each array of values (it will iterate the array of arrays bound to the data function above)
linesGroup = lines.enter().append("g")
.attr("class", function(d, i) {
return "line_group series_" + i;
});
// add path (the actual line) to line group
linesGroup.append("path")
.attr("class", function(d, i) {
//debug("Appending line [" + containerId + "]: " + i)
return "line series_" + i;
})
.attr("fill", "none")
.attr("stroke", function(d, i) {
return data.colors[i];
})
.attr("d", lineFunction) // use the 'lineFunction' to create the data points in the correct x,y axis
.on('mouseover', function(d, i) {
handleMouseOverLine(d, i);
});
// add line label to line group
linesGroupText = linesGroup.append("svg:text");
linesGroupText.attr("class", function(d, i) {
//debug("Appending line [" + containerId + "]: " + i)
return "line_label series_" + i;
})
.text(function(d, i) {
return "";
});
// add a 'hover' line that we'll show as a user moves their mouse (or finger)
// so we can use it to show detailed values of each line
hoverLineGroup = graph.append("svg:g")
.attr("class", "hover-line");
// add the line to the group
hoverLine = hoverLineGroup
.append("svg:line")
.attr("x1", 10).attr("x2", 10) // vertical line so same value on each
.attr("y1", 0).attr("y2", h); // top to bottom
// hide it by default
hoverLine.classed("hide", true);
createScaleButtons();
createDateLabel();
createLegend();
setValueLabelsToLatest();
}
/**
* Create a legend that displays the name of each line with appropriate color coding
* and allows for showing the current value when doing a mouseOver
*/
var createLegend = function() {
// append a group to contain all lines
var legendLabelGroup = graph.append("svg:g")
.attr("class", "legend-group")
.selectAll("g")
.data(data.displayNames)
.enter().append("g")
.attr("class", "legend-labels");
legendLabelGroup.append("svg:text")
.attr("class", "legend name")
.text(function(d, i) {
return d;
})
.attr("font-size", legendFontSize)
.attr("fill", function(d, i) {
// return the color for this row
return data.colors[i];
})
.attr("y", function(d, i) {
return h+28;
})
// put in placeholders with 0 width that we'll populate and resize dynamically
legendLabelGroup.append("svg:text")
.attr("class", "legend value")
.attr("font-size", legendFontSize)
.attr("fill", function(d, i) {
return data.colors[i];
})
.attr("y", function(d, i) {
return h+28;
})
// x values are not defined here since those get dynamically calculated when data is set in displayValueLabelsForPositionX()
}
/**
* Create scale buttons for switching the y-axis
*/
var createScaleButtons = function() {
var cumulativeWidth = 0;
// append a group to contain all lines
var buttonGroup = graph.append("svg:g")
.attr("class", "scale-button-group")
.selectAll("g")
.data(scales)
.enter().append("g")
.attr("class", "scale-buttons")
.append("svg:text")
.attr("class", "scale-button")
.text(function(d, i) {
return d[1];
})
.attr("font-size", "12") // this must be before "x" which dynamically determines width
.attr("fill", function(d) {
if(d[0] == yScale) {
return "black";
} else {
return "blue";
}
})
.classed("selected", function(d) {
if(d[0] == yScale) {
return true;
} else {
return false;
}
})
.attr("x", function(d, i) {
// return it at the width of previous labels (where the last one ends)
var returnX = cumulativeWidth;
// increment cumulative to include this one
cumulativeWidth += this.clientWidth+5;
return returnX;
})
.attr("y", -4)
.on('click', function(d, i) {
handleMouseClickScaleButton(this, d, i);
});
}
var handleMouseClickScaleButton = function(button, buttonData, index) {
if(index == 0) {
self.switchToLinearScale();
} else if(index == 1) {
self.switchToPowerScale();
} else if(index == 2) {
self.switchToLogScale();
}
// change text decoration
graph.selectAll('.scale-button')
.attr("fill", function(d) {
if(d[0] == yScale) {
return "black";
} else {
return "blue";
}
})
.classed("selected", function(d) {
if(d[0] == yScale) {
return true;
} else {
return false;
}
})
}
/**
* Create a data label
*/
var createDateLabel = function() {
var date = new Date(); // placeholder just so we can calculate a valid width
// create the date label to the left of the scaleButtons group
var buttonGroup = graph.append("svg:g")
.attr("class", "date-label-group")
.append("svg:text")
.attr("class", "date-label")
.attr("text-anchor", "end") // set at end so we can position at far right edge and add text from right to left
.attr("font-size", "10")
.attr("y", -4)
.attr("x", w)
.text(date.toDateString() + " " + date.toLocaleTimeString())
}
/**
* Called when a user mouses over a line.
*/
var handleMouseOverLine = function(lineData, index) {
//debug("MouseOver line [" + containerId + "] => " + index)
// user is interacting
userCurrentlyInteracting = true;
}
/**
* Called when a user mouses over the graph.
*/
var handleMouseOverGraph = function(event) {
var mouseX = event.pageX-hoverLineXOffset;
var mouseY = event.pageY-hoverLineYOffset;
//debug("MouseOver graph [" + containerId + "] => x: " + mouseX + " y: " + mouseY + " height: " + h + " event.clientY: " + event.clientY + " offsetY: " + event.offsetY + " pageY: " + event.pageY + " hoverLineYOffset: " + hoverLineYOffset)
if(mouseX >= 0 && mouseX <= w && mouseY >= 0 && mouseY <= h) {
// show the hover line
hoverLine.classed("hide", false);
// set position of hoverLine
hoverLine.attr("x1", mouseX).attr("x2", mouseX)
displayValueLabelsForPositionX(mouseX)
// user is interacting
userCurrentlyInteracting = true;
currentUserPositionX = mouseX;
} else {
// proactively act as if we've left the area since we're out of the bounds we want
handleMouseOutGraph(event)
}
}
var handleMouseOutGraph = function(event) {
// hide the hover-line
hoverLine.classed("hide", true);
setValueLabelsToLatest();
//debug("MouseOut graph [" + containerId + "] => " + mouseX + ", " + mouseY)
// user is no longer interacting
userCurrentlyInteracting = false;
currentUserPositionX = -1;
}
/* // if we need to support older browsers without pageX/pageY we can use this
var getMousePositionFromEvent = function(e, element) {
var posx = 0;
var posy = 0;
if (!e) var e = window.event;
if (e.pageX || e.pageY) {
posx = e.pageX;
posy = e.pageY;
}
else if (e.clientX || e.clientY) {
posx = e.clientX + document.body.scrollLeft
+ document.documentElement.scrollLeft;
posy = e.clientY + document.body.scrollTop
+ document.documentElement.scrollTop;
}
return {x: posx, y: posy};
}
*/
/*
* Handler for when data is updated.
*/
var handleDataUpdate = function() {
if(userCurrentlyInteracting) {
// user is interacting, so let's update values to wherever the mouse/finger is on the updated data
if(currentUserPositionX > -1) {
displayValueLabelsForPositionX(currentUserPositionX)
}
} else {
// the user is not interacting with the graph, so we'll update the labels to the latest
setValueLabelsToLatest();
}
}
/**
* Display the data values at position X in the legend value labels.
*/
var displayValueLabelsForPositionX = function(xPosition, withTransition) {
var animate = false;
if(withTransition != undefined) {
if(withTransition) {
animate = true;
}
}
var dateToShow;
var labelValueWidths = [];
graph.selectAll("text.legend.value")
.text(function(d, i) {
var valuesForX = getValueForPositionXFromData(xPosition, data.values[i]);
dateToShow = valuesForX.date;
return valuesForX.value;
})
.attr("x", function(d, i) {
labelValueWidths[i] = this.clientWidth;
})
// position label names
var cumulativeWidth = 0;
var labelNameEnd = [];
graph.selectAll("text.legend.name")
.attr("x", function(d, i) {
// return it at the width of previous labels (where the last one ends)
var returnX = cumulativeWidth;
// increment cumulative to include this one + the value label at this index
cumulativeWidth += this.clientWidth+4+labelValueWidths[i]+8;
// store where this ends
labelNameEnd[i] = returnX + this.clientWidth+5;
return returnX;
})
// remove last bit of padding from cumulativeWidth
cumulativeWidth = cumulativeWidth - 8;
if(cumulativeWidth > w) {
// decrease font-size to make fit
legendFontSize = legendFontSize-1;
//debug("making legend fit by decreasing font size to: " + legendFontSize)
graph.selectAll("text.legend.name")
.attr("font-size", legendFontSize);
graph.selectAll("text.legend.value")
.attr("font-size", legendFontSize);
// recursively call until we get ourselves fitting
displayValueLabelsForPositionX(xPosition);
return;
}
// position label values
graph.selectAll("text.legend.value")
.attr("x", function(d, i) {
return labelNameEnd[i];
})
// show the date
graph.select('text.date-label').text(dateToShow.toDateString() + " " + dateToShow.toLocaleTimeString())
// move the group of labels to the right side
if(animate) {
console.log("animate the transition")
graph.selectAll("g.legend-group g")
.transition()
.duration(transitionDuration)
.ease("linear")
.attr("transform", "translate(" + (w-cumulativeWidth) +",0)")
} else {
graph.selectAll("g.legend-group g")
.attr("transform", "translate(" + (w-cumulativeWidth) +",0)")
}
}
/**
* Set the value labels to whatever the latest data point is.
*/
var setValueLabelsToLatest = function(withTransition) {
displayValueLabelsForPositionX(w, withTransition);
}
/**
* Convert back from an X position on the graph to a data value from the given array (one of the lines)
* Return {value: value, date, date}
*/
var getValueForPositionXFromData = function(xPosition, d) {
// get the date on x-axis for the current location
var xValue = x.invert(xPosition);
// Calculate the value from this date by determining the 'index'
// within the data array that applies to this value
var index = (xValue.getTime() - data.startTime) / data.step;
if(index >= d.length) {
index = d.length-1;
}
// The date we're given is interpolated so we have to round off to get the nearest
// index in the data array for the xValue we're given.
// Once we have the index, we then retrieve the data from the d[] array
index = Math.round(index);
// bucketDate is the date rounded to the correct 'step' instead of interpolated
var bucketDate = new Date(data.startTime.getTime() + data.step * index);
var v = d[index];
return {value: Math.round(v), date: bucketDate};
}
/**
* Called when the window is resized to redraw graph accordingly.
*/
var handleWindowResizeEvent = function() {
//debug("Window Resize Event [" + containerId + "] => resizing graph")
initDimensions();
initX();
// reset width/height of SVG
d3.select("#" + containerId + " svg")
.attr("width", w + margin[1] + margin[3])
.attr("height", h + margin[0] + margin[2]);
// reset transform of x axis
graph.selectAll("g .x.axis")
.attr("transform", "translate(0," + h + ")");
// reset legendFontSize on window resize so it has a chance to re-calculate to a bigger size if it can now fit
legendFontSize = 12;
//debug("making legend fit by decreasing font size to: " + legendFontSize)
graph.selectAll("text.legend.name")
.attr("font-size", legendFontSize);
graph.selectAll("text.legend.value")
.attr("font-size", legendFontSize);
// move date label
graph.select('text.date-label')
.transition()
.duration(transitionDuration)
.ease("linear")
.attr("x", w)
// redraw everything
redrawAxes(true);
redrawLines(true);
// force legend to redraw
setValueLabelsToLatest(true);
}
/**
* Set height/width dimensions based on container.
*/
var initDimensions = function() {
// automatically size to the container using JQuery to get width/height
w = $("#" + containerId).width() - margin[1] - margin[3]; // width
h = $("#" + containerId).height() - margin[0] - margin[2]; // height
// make sure to use offset() and not position() as we want it relative to the document, not its parent
hoverLineXOffset = margin[3]+$(container).offset().left;
hoverLineYOffset = margin[0]+$(container).offset().top;
}
/**
* Return the value from argsMap for key or throw error if no value found
*/
var getRequiredVar = function(argsMap, key, message) {
if(!argsMap[key]) {
if(!message) {
throw new Error(key + " is required")
} else {
throw new Error(message)
}
} else {
return argsMap[key]
}
}
/**
* Return the value from argsMap for key or defaultValue if no value found
*/
var getOptionalVar = function(argsMap, key, defaultValue) {
if(!argsMap[key]) {
return defaultValue
} else {
return argsMap[key]
}
}
var error = function(message) {
console.log("ERROR: " + message)
}
var debug = function(message) {
console.log("DEBUG: " + message)
}
/* *************************************************************** */
/* execute init now that everything is defined */
/* *************************************************************** */
_init();
};
Raw
sample_data.js
/*
* sample data to plot over time
*/
var data = {"start":1337904120000,"end":1337990160000,"step":120000,"names":["tcpLoss","tcpOutRsts","tcpRetransSegs","tcpEstabResets","tcpInSegs","tcpOutSegs"],"values":[[18.7121272524272, 19.407714107605, 19.3277841133646, 13.5810933505499, 18.4365300643209, 16.679901628138, 22.7706084591238, 21.6890815752897, 20.4429130899286, 13.392022494336, 14.7903434466492, 21.9454504429186, 17.9283131035878, 26.3008473163018, 16.655770530425, 15.3941967416249, 20.6576092752736, 17.8501668932744, 22.31671028375, 18.127765502755, 14.8946831108562, 19.8750107850179, 21.7521487422449, 25.0938816616684, 24.0263774985188, 23.3835795704626, 22.0456621784964, 25.8898634804509, 23.6172994390702, 20.6075796977499, 21.4612787181434, 26.2610277350052, 25.1676721095174, 23.8697735861402, 24.7606369301268, 24.8569055481754, 31.2762305103566, 26.8152640687095, 26.3336882274355, 23.216709552853, 20.9972844628098, 25.0323567529978, 22.7063321136885, 24.515027303022, 30.6850326293777, 26.0276205142196, 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Raw
style.css
/*
* The CSS below is intended for the "global" styles of svg.line-graph, not specifics per graph such as color of lines
* which is expected to come from the data itself (even though it can be done via CSS as well if wanted)
*/
svg.line-graph text {
cursor: default;
}
svg.line-graph .hover-line {
stroke: #6E7B8B;
}
svg.line-graph .hide {
opacity: 0;
}
svg.line-graph .axis {
shape-rendering: crispEdges;
}
svg.line-graph .x.axis line {
stroke: #D3D3D3;
}
svg.line-graph .x.axis .minor {
stroke-opacity: .5;
}
svg.line-graph .x.axis path {
display: none;
}
svg.line-graph .x.axis text {
font-size: 10px;
}
svg.line-graph .y.axis line, .y.axis path {
fill: none;
stroke: #000;
}
svg.line-graph .y.axis text {
font-size: 12px;
}
svg.line-graph .scale-button:not(.selected):hover {
text-decoration: underline;
cursor: pointer !important;
}
svg.line-graph .date-label {
fill: #6E7B8B;
}
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