source: Dev/trunk/d3/examples/choropleth/choropleth-area.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    <script type="text/javascript" src="../../d3.js"></script>
6    <script type="text/javascript" src="../../d3.geo.js"></script>
7    <script type="text/javascript" src="../../d3.geom.js"></script>
8    <script type="text/javascript" src="../../d3.behavior.js"></script>
9    <style type="text/css">
10
11svg {
12  background: #eee;
13  width: 960px;
14  height: 500px;
15}
16
17    </style>
18  </head>
19  <body>
20    <script type="text/javascript">
21
22var svg = d3.select("body")
23  .append("svg:svg")
24    .call(d3.behavior.zoom()
25    .on("zoom", redraw))
26  .append("svg:g");
27
28var counties = svg.append("svg:g")
29    .attr("id", "counties");
30
31var path = d3.geo.path();
32
33var fill = d3.scale.log()
34    .domain([10, 500])
35    .range(["brown", "steelblue"]);
36
37d3.json("../data/us-counties.json", function(json) {
38  counties.selectAll("path")
39      .data(json.features)
40    .enter().append("svg:path")
41      .attr("d", path)
42      .attr("fill", function(d) { return fill(path.area(d)); });
43});
44
45function redraw() {
46  svg.attr("transform", "translate(" + d3.event.translate + ")scale(" + d3.event.scale + ")");
47}
48
49    </script>
50  </body>
51</html>
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