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Funfun/data.json

Created Apr 10, 2012
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What would you like to do?
simple force-directed graph using d3
{
"nodes": [
{
"name": "Myriel",
"group": 1
},
{
"name": "Napoleon",
"group": 1
},
{
"name": "Napoleon",
"group": 2
}
],
"links": [
{
"source": 1,
"target": 0,
"value": 1
},
{
"source": 1,
"target": 0,
"value": 1
},
{
"source": 1,
"target": 2,
"value": 1
}
]
}
<!DOCTYPE html>
<html>
<head>
<title>Force-Directed Layout</title>
<script type="text/javascript" src="http://mbostock.github.com/d3/d3.js"></script>
<style type="text/css">
div.node {
border-radius: 6px;
width: 12px;
height: 12px;
margin: -6px 0 0 -6px;
position: absolute;
}
div.link {
position: absolute;
border-bottom: solid #999 1px;
height: 0;
-webkit-transform-origin: 0 0;
-moz-transform-origin: 0 0;
-ms-transform-origin: 0 0;
-o-transform-origin: 0 0;
transform-origin: 0 0;
}
</style>
</head>
<body>
<div id="chart"></div>
<script type="text/javascript">
var width = 960,
height = 500;
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);
d3.json("data.json", function(json) {
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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