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@mikong mikong/gist:1947753
Created Mar 1, 2012

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D3 Force Test
<html>
<head>
<meta http-equiv="Content-Type" content="text/html;charset=utf-8">
<script type="text/javascript" src="http://mbostock.github.com/d3/d3.v2.js?2.8.0"></script>
</head>
<body>
<div id="chart"></div>
<script type="text/javascript">
var width = 400,
height = 300;
var color = d3.scale.category20();
var force = d3.layout.force()
.charge(-120)
.linkDistance(30)
.size([width, height]);
var svg = d3.select("#chart").append("svg")
.attr("width", width)
.attr("height", height);
var json = {"nodes":
[{"name":"Myriel","group":1},
{"name":"Napoleon","group":1},
{"name":"Mlle.Baptistine","group":1},
{"name":"Mme.Magloire","group":1}],
"links":
[{"source":1,"target":0,"value":1},
{"source":2,"target":1,"value":1},
{"source":3,"target":0,"value":1},
{"source":4,"target":0,"value":1}]
}
force
.nodes(json.nodes)
.links(json.links)
.start();
var link = svg.selectAll("line.link")
.data(json.links)
.enter().append("line")
.attr("class", "link")
.style("stroke-width", function(d) { return Math.sqrt(d.value); });
var node = svg.selectAll("circle.node")
.data(json.nodes)
.enter().append("circle")
.attr("class", "node")
.attr("r", 5)
.style("fill", function(d) { return color(d.group); })
.call(force.drag);
node.append("title")
.text(function(d) { return d.name; });
force.on("tick", function() {
link.attr("x1", function(d) { return d.source.x; })
.attr("y1", function(d) { return d.source.y; })
.attr("x2", function(d) { return d.target.x; })
.attr("y2", function(d) { return d.target.y; });
node.attr("cx", function(d) { return d.x; })
.attr("cy", function(d) { return d.y; });
});
</script>
</body>
</html>
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