source: Dev/trunk/d3/examples/partition/partition-sunburst-zoom.html @ 76

Last change on this file since 76 was 76, checked in by fpvanagthoven, 14 years ago

d3

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1<!DOCTYPE html>
2<html>
3  <head>
4    <meta http-equiv="Content-Type" content="text/html;charset=utf-8">
5    <title>Partition - Sunburst</title>
6    <script type="text/javascript" src="../../d3.js"></script>
7    <script type="text/javascript" src="../../d3.layout.js"></script>
8    <style type="text/css">
9
10path {
11  stroke: #fff;
12  fill-rule: evenodd;
13}
14
15    </style>
16  </head>
17  <body>
18    <div id="chart"></div>
19    <script type="text/javascript">
20
21var w = 960,
22    h = 700,
23    r = Math.min(w, h) / 2,
24    x = d3.scale.linear().range([0, 2 * Math.PI]),
25    y = d3.scale.sqrt().range([0, r]),
26    color = d3.scale.category20c();
27
28var vis = d3.select("#chart").append("svg:svg")
29    .attr("width", w)
30    .attr("height", h)
31  .append("svg:g")
32    .attr("transform", "translate(" + w / 2 + "," + h / 2 + ")");
33
34var partition = d3.layout.partition()
35    .value(function(d) { return d.size; });
36
37var arc = d3.svg.arc()
38    .startAngle(function(d) { return Math.max(0, Math.min(2 * Math.PI, x(d.x))); })
39    .endAngle(function(d) { return Math.max(0, Math.min(2 * Math.PI, x(d.x + d.dx))); })
40    .innerRadius(function(d) { return Math.max(0, y(d.y)); })
41    .outerRadius(function(d) { return Math.max(0, y(d.y + d.dy)); });
42
43d3.json("../data/flare.json", function(json) {
44  var path = vis.data([json]).selectAll("path")
45      .data(partition.nodes)
46    .enter().append("svg:path")
47      .attr("d", arc)
48      .style("fill", function(d) { return color((d.children ? d : d.parent).name); })
49      .on("click", click);
50
51  function click(d) {
52    path.transition()
53      .duration(750)
54      .attrTween("d", arcTween(d));
55  }
56});
57
58// Interpolate the scales!
59function arcTween(d) {
60  var xd = d3.interpolate(x.domain(), [d.x, d.x + d.dx]),
61      yd = d3.interpolate(y.domain(), [d.y, 1]),
62      yr = d3.interpolate(y.range(), [d.y ? 20 : 0, r]);
63  return function(d, i) {
64    return i
65        ? function(t) { return arc(d); }
66        : function(t) { x.domain(xd(t)); y.domain(yd(t)).range(yr(t)); return arc(d); };
67  };
68}
69
70    </script>
71  </body>
72</html>
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