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<!DOCTYPE html> | |
<meta charset="utf-8"> | |
<style> | |
body { | |
font-family: "Helvetica Neue", Helvetica, Arial, sans-serif; | |
margin: auto; | |
position: relative; | |
width: 960px; | |
} | |
text { | |
font: 10px sans-serif; | |
} | |
.axis path, | |
.axis line { | |
fill: none; | |
stroke: #000; | |
shape-rendering: crispEdges; | |
} | |
form { | |
position: absolute; | |
right: 10px; | |
top: 10px; | |
} | |
</style> | |
<form> | |
<label><input type="radio" name="mode" value="grouped"> Grouped</label> | |
<label><input type="radio" name="mode" value="stacked" checked> Stacked</label> | |
</form> | |
<script src="http://d3js.org/d3.v3.min.js"></script> | |
<script> | |
var n = 4, // number of layers | |
m = 58, // number of samples per layer | |
stack = d3.layout.stack(), | |
layers = stack(d3.range(n).map(function() { return bumpLayer(m, .1); })), | |
yGroupMax = d3.max(layers, function(layer) { return d3.max(layer, function(d) { return d.y; }); }), | |
yStackMax = d3.max(layers, function(layer) { return d3.max(layer, function(d) { return d.y0 + d.y; }); }); | |
var margin = {top: 40, right: 10, bottom: 20, left: 10}, | |
width = 960 - margin.left - margin.right, | |
height = 500 - margin.top - margin.bottom; | |
var x = d3.scale.ordinal() | |
.domain(d3.range(m)) | |
.rangeRoundBands([0, width], .08); | |
var y = d3.scale.linear() | |
.domain([0, yStackMax]) | |
.range([height, 0]); | |
var color = d3.scale.linear() | |
.domain([0, n - 1]) | |
.range(["#ED1651", "#6875FB"]); | |
var xAxis = d3.svg.axis() | |
.scale(x) | |
.tickSize(0) | |
.tickPadding(6) | |
.orient("bottom"); | |
var svg = d3.select("body").append("svg") | |
.attr("width", width + margin.left + margin.right) | |
.attr("height", height + margin.top + margin.bottom) | |
.append("g") | |
.attr("transform", "translate(" + margin.left + "," + margin.top + ")"); | |
var layer = svg.selectAll(".layer") | |
.data(layers) | |
.enter().append("g") | |
.attr("class", "layer") | |
.style("fill", function(d, i) { return color(i); }); | |
var rect = layer.selectAll("rect") | |
.data(function(d) { return d; }) | |
.enter().append("rect") | |
.attr("x", function(d) { return x(d.x); }) | |
.attr("y", height) | |
.attr("width", x.rangeBand()) | |
.attr("height", 0); | |
rect.transition() | |
.delay(function(d, i) { return i * 10; }) | |
.attr("y", function(d) { return y(d.y0 + d.y); }) | |
.attr("height", function(d) { return y(d.y0) - y(d.y0 + d.y); }); | |
svg.append("g") | |
.attr("class", "x axis") | |
.attr("transform", "translate(0," + height + ")") | |
.call(xAxis); | |
d3.selectAll("input").on("change", change); | |
var timeout = setTimeout(function() { | |
d3.select("input[value=\"grouped\"]").property("checked", true).each(change); | |
}, 2000); | |
function change() { | |
clearTimeout(timeout); | |
if (this.value === "grouped") transitionGrouped(); | |
else transitionStacked(); | |
} | |
function transitionGrouped() { | |
y.domain([0, yGroupMax]); | |
rect.transition() | |
.duration(500) | |
.delay(function(d, i) { return i * 10; }) | |
.attr("x", function(d, i, j) { return x(d.x) + x.rangeBand() / n * j; }) | |
.attr("width", x.rangeBand() / n) | |
.transition() | |
.attr("y", function(d) { return y(d.y); }) | |
.attr("height", function(d) { return height - y(d.y); }); | |
} | |
function transitionStacked() { | |
y.domain([0, yStackMax]); | |
rect.transition() | |
.duration(500) | |
.delay(function(d, i) { return i * 10; }) | |
.attr("y", function(d) { return y(d.y0 + d.y); }) | |
.attr("height", function(d) { return y(d.y0) - y(d.y0 + d.y); }) | |
.transition() | |
.attr("x", function(d) { return x(d.x); }) | |
.attr("width", x.rangeBand()); | |
} | |
// Inspired by Lee Byron's test data generator. | |
function bumpLayer(n, o) { | |
function bump(a) { | |
var x = 1 / (.1 + Math.random()), | |
y = 2 * Math.random() - .5, | |
z = 10 / (.1 + Math.random()); | |
for (var i = 0; i < n; i++) { | |
var w = (i / n - y) * z; | |
a[i] += x * Math.exp(-w * w); | |
} | |
} | |
var a = [], i; | |
for (i = 0; i < n; ++i) a[i] = o + o * Math.random(); | |
for (i = 0; i < 5; ++i) bump(a); | |
return a.map(function(d, i) { return {x: i, y: Math.max(0, d)}; }); | |
} | |
</script> |
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