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Force Graph Custom Design
<!-- begin snippet: js hide: false console: true babel: false -->
<!-- language: lang-html -->
<!DOCTYPE html>
<html>
<head>
<meta http-equiv="Content-Type" content="text/html;charset=utf-8">
<title>Force-Directed Graph Custom Design</title>
<style type="text/css">
.link {
stroke: #ccc;
}
body
{
background-color:black;
}
.node text {
pointer-events: none;
font: 10px sans-serif;
}
text
{
fill:black;
}
</style>
</head>
<body>
<script src="https://cdnjs.cloudflare.com/ajax/libs/d3/3.4.11/d3.min.js"></script>
<script src="http://labratrevenge.com/d3-tip/javascripts/d3.tip.v0.6.3.js"></script>
<script type="application/json" id="mis">
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"group": 1
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}, {
"name": "Mlle.Baptistine",
"group": 1
}, {
"name": "Mme.Magloire",
"group": 1
}, {
"name": "CountessdeLo",
"group": 1
}, {
"name": "Geborand",
"group": 1
}, {
"name": "Champtercier",
"group": 1
}, {
"name": "Cravatte",
"group": 1
}, {
"name": "Count",
"group": 1
}, {
"name": "OldMan",
"group": 1
}, {
"name": "Labarre",
"group": 2
}, {
"name": "Valjean",
"group": 2
}, {
"name": "Marguerite",
"group": 3
}, {
"name": "Mme.deR",
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"name": "Isabeau",
"group": 2
}, {
"name": "Gervais",
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"name": "Tholomyes",
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"name": "Listolier",
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"name": "Fameuil",
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"name": "Blacheville",
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"name": "Favourite",
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"name": "Dahlia",
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"name": "Zephine",
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"name": "Fantine",
"group": 3
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"name": "Mme.Thenardier",
"group": 4
}, {
"name": "Thenardier",
"group": 4
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"name": "Cosette",
"group": 5
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"name": "Javert",
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"name": "Bamatabois",
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"name": "Perpetue",
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"name": "Gillenormand",
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}, {
"name": "Magnon",
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"name": "Mlle.Vaubois",
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"name": "Lt.Gillenormand",
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"name": "Marius",
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//Set up the colour scale
var color = d3.scale.category20();
//Set up the force layout
var force = d3.layout.force()
.charge(-120)
.linkDistance(80)
.size([width, height]);
//Append a SVG to the body of the html page. Assign this SVG as an object to svg
var svg = d3.select("body").append("svg")
.attr("width", width)
.attr("height", height);
//Read the data from the mis element
var mis = document.getElementById('mis').innerHTML;
graph = JSON.parse(mis);
//Creates the graph data structure out of the json data
force.nodes(graph.nodes)
.links(graph.links)
.start();
//Create all the line svgs but without locations yet
var link = svg.selectAll(".link")
.data(graph.links)
.enter().append("line")
.attr("class", "link")
.style("stroke-width", function (d) {
return Math.sqrt(d.value);
});
//Do the same with the circles for the nodes - no
//Changed
var node = svg.selectAll(".node")
.data(graph.nodes)
.enter().append("g")
.attr("class", "node")
.call(force.drag);
node.append("circle")
.attr("r", 8)
.style("fill", function (d) {
return color(d.group);
})
node.append("text")
.attr("dx", -2)
.attr("dy", ".35em")
.text(function(d) { return d.group });
//End changed
//Now we are giving the SVGs co-ordinates - the force layout is generating the co-ordinates which this code is using to update the attributes of the SVG elements
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;
});
//Changed
d3.selectAll("circle").attr("cx", function (d) {
return d.x;
})
.attr("cy", function (d) {
return d.y;
});
d3.selectAll("text").attr("x", function (d) {
return d.x;
})
.attr("y", function (d) {
return d.y;
});
//End Changed
});
</script>
</body>
</html>
<!-- end snippet -->
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