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license: mit |
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<!DOCTYPE html> | |
<head> | |
<meta charset="utf-8"> | |
<script src="https://d3js.org/d3.v4.min.js"></script> | |
<style> | |
.area { | |
fill: none; | |
clip-path: url(#clip); | |
stroke: #444; | |
stroke-width: 2px; | |
} | |
.zoom { | |
cursor: move; | |
fill: none; | |
pointer-events: all; | |
} | |
body { margin:0;position:fixed;top:0;right:0;bottom:0;left:0; } | |
</style> | |
</head> | |
<body> | |
<svg width="960" height="500"></svg> | |
<script> | |
var dataJSON = { | |
"columns": [ | |
"date", | |
"value" | |
], | |
"values": [ | |
[ | |
"1986-06-02", | |
"0.40200000000000000000" | |
], | |
[ | |
"1986-06-03", | |
"0.39300000000000000000" | |
], | |
[ | |
"1986-06-04", | |
"0.37800000000000000000" | |
], | |
[ | |
"1986-06-05", | |
"0.39000000000000000000" | |
], | |
[ | |
"1986-06-06", | |
"0.38500000000000000000" | |
], | |
[ | |
"1986-06-09", | |
"0.37300000000000000000" | |
], | |
[ | |
"1986-06-10", | |
"0.36500000000000000000" | |
], | |
[ | |
"1986-06-11", | |
"0.38900000000000000000" | |
], | |
[ | |
"1986-06-12", | |
"0.39400000000000000000" | |
], | |
[ | |
"1986-06-13", | |
"0.39800000000000000000" | |
], | |
[ | |
"1986-06-16", | |
"0.37900000000000000000" | |
], | |
[ | |
"1986-06-17", | |
"0.37400000000000000000" | |
], | |
[ | |
"1986-06-18", | |
"0.37600000000000000000" | |
], | |
[ | |
"1986-06-19", | |
"0.38200000000000000000" | |
], | |
[ | |
"1986-06-20", | |
"0.36500000000000000000" | |
], | |
[ | |
"1986-06-23", | |
"0.36900000000000000000" | |
], | |
[ | |
"1986-06-24", | |
"0.36900000000000000000" | |
], | |
[ | |
"1986-06-25", | |
"0.37500000000000000000" | |
], | |
[ | |
"1986-06-26", | |
"0.37600000000000000000" | |
], | |
[ | |
"1986-06-27", | |
"0.37900000000000000000" | |
], | |
[ | |
"1986-06-30", | |
"0.37400000000000000000" | |
], | |
[ | |
"1986-07-01", | |
"0.36900000000000000000" | |
], | |
[ | |
"1986-07-02", | |
"0.35900000000000000000" | |
], | |
[ | |
"1986-07-03", | |
"0.34900000000000000000" | |
] | |
] | |
}; | |
var testData = []; | |
var parseDate = d3.timeParse("%Y-%m-%d"); | |
var parseDate2 = d3.timeParse("%b %Y"); | |
var formatDate = d3.timeFormat('%b %Y'); | |
dataJSON.values.forEach(function(d){ | |
var item = {}; | |
item['date'] = parseDate2(formatDate(parseDate(d[0]))); | |
item['price'] = d[1]; | |
testData.push(item); | |
}); | |
console.log(testData); | |
var svg = d3.select("svg") .attr("preserveAspectRatio", "xMinYMin meet") | |
.attr("viewBox", "0 0 400 250"); | |
var margin = {top: 20, right: 20, bottom: 110, left: 40}; | |
var margin2 = {top: 430, right: 20, bottom: 30, left: 40}; | |
var width = +svg.attr("width") - margin.left - margin.right; | |
var height = +svg.attr("height") - margin.top - margin.bottom; | |
var height2 = +svg.attr("height") - margin2.top - margin2.bottom; | |
var x = d3.scaleTime().range([0, width]), | |
x2 = d3.scaleTime().range([0, width]), | |
y = d3.scaleLinear().range([height, 0]), | |
y2 = d3.scaleLinear().range([height2, 0]); | |
var xAxis = d3.axisBottom(x), | |
xAxis2 = d3.axisBottom(x2), | |
yAxis = d3.axisLeft(y); | |
var brush = d3.brushX() | |
.extent([[0, 0], [width, height2]]) | |
.on("brush end", brushed); | |
var zoom = d3.zoom() | |
.scaleExtent([1, Infinity]) | |
.translateExtent([[0, 0], [width, height]]) | |
.extent([[0, 0], [width, height]]) | |
.on("zoom", zoomed); | |
var area = d3.line() | |
//.curve(d3.curveMonotoneX) | |
.x(function(d) { return x(d.date); }) | |
//.y0(height) | |
.y(function(d) { return y(d.price); }); | |
var area2 = d3.area() | |
.curve(d3.curveMonotoneX) | |
.x(function(d) { return x2(d.date); }) | |
.y0(height2) | |
.y1(function(d) { return y2(d.price); }); | |
svg.append("defs").append("clipPath") | |
.attr("id", "clip") | |
.append("rect") | |
.attr("width", width) | |
.attr("height", height); | |
var focus = svg.append("g") | |
.attr("class", "focus") | |
.attr("transform", "translate(" + margin.left + "," + margin.top + ")"); | |
var context = svg.append("g") | |
.attr("class", "context") | |
.attr("transform", "translate(" + margin2.left + "," + margin2.top + ")"); | |
x.domain(d3.extent(testData, function(d) { return d.date; })); | |
y.domain([0, d3.max(testData, function(d) { return d.price; })]); | |
x2.domain(x.domain()); | |
y2.domain(y.domain()); | |
focus.append("path") | |
.datum(testData) | |
.attr("class", "area") | |
.attr("d", area); | |
focus.append("g") | |
.attr("class", "axis axis--x") | |
.attr("transform", "translate(0," + height + ")") | |
.call(xAxis); | |
focus.append("g") | |
.attr("class", "axis axis--y") | |
.call(yAxis); | |
context.append("path") | |
.datum(testData) | |
.attr("class", "area") | |
.attr("d", area2); | |
context.append("g") | |
.attr("class", "axis axis--x") | |
.attr("transform", "translate(0," + height2 + ")") | |
.call(xAxis2); | |
context.append("g") | |
.attr("class", "brush") | |
.call(brush) | |
.call(brush.move, x.range()); | |
svg.append("rect") | |
.attr("class", "zoom") | |
.attr("width", width) | |
.attr("height", height) | |
.attr("transform", "translate(" + margin.left + "," + margin.top + ")") | |
.call(zoom); | |
function brushed() { | |
if (d3.event.sourceEvent && d3.event.sourceEvent.type === "zoom") return; // ignore brush-by-zoom | |
var s = d3.event.selection || x2.range(); | |
x.domain(s.map(x2.invert, x2)); | |
focus.select(".area").attr("d", area); | |
focus.select(".axis--x").call(xAxis); | |
svg.select(".zoom").call(zoom.transform, d3.zoomIdentity | |
.scale(width / (s[1] - s[0])) | |
.translate(-s[0], 0)); | |
} | |
function zoomed() { | |
if (d3.event.sourceEvent && d3.event.sourceEvent.type === "brush") return; // ignore zoom-by-brush | |
var t = d3.event.transform; | |
x.domain(t.rescaleX(x2).domain()); | |
focus.select(".area").attr("d", area); | |
focus.select(".axis--x").call(xAxis); | |
context.select(".brush").call(brush.move, x.range().map(t.invertX, t)); | |
} | |
function type(d) { | |
d.date = parseDate(d.date); | |
d.price = +d.price; | |
return d; | |
} | |
</script> | |
</body> |
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