Communities in a graph

Detecting communities in the given graph usng Girvan-Newman Algorithm I wrote a python script to extract the communities.

<!DOCTYPE html>
<html>
<head>
	<meta charset="utf-8">
	<title>Force Layout</title>
	<style type="text/css">
	.node{
		stroke: #fff;
		stroke-width: 1.5px;
	}

.link{
		stroke: #999;
		stroke-opacity: .6;
	}

.node text{
		pointer-events: none;
		font: 10px sans-serif;
	}
	.button{
		color: white;
		background: green;
		font: 25px aerial;
	}
	</style>
</head>
<body>
<button class="button" onclick="alpha()">Click for original graph</button>
<br>
<button class="button" onclick="communities()">Click to split into communities</button>

function alpha(){
	d3.select("svg")
	.remove();

var width = 960;
	var height = 500;
	var color = d3.scale.category20();

var force = d3.layout.force()
	.charge(-120)
	.linkDistance(30)
	.size([width, height]);

var svg = d3.select("body").append("svg")
	.attr("width", width)
	.attr("height", height);

d3.json("graph.json", function(error, graph){

force
		.nodes(graph.nodes)
		.links(graph.links)
		.start();

var link = svg.selectAll(".link")
			.data(graph.links)
		.enter().append("line")
			.attr("class", "link")
			.style("stroke-width", function(d){ return Math.sqrt(d.value); });

var gnodes = svg.selectAll("g.gnode")
			.data(graph.nodes)
		.enter().append("g")
			.classed("gnodes", true);

var node = gnodes.append("circle")
			.attr("class", "node")
			.attr("r", 5)
			.style("fill", "steelblue")
			.call(force.drag);

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; })

gnodes.attr("transform", function(d){ return "translate(" + [d.x, d.y] + ")"; })
	});

});
}

alpha();

function communities(){
	d3.select("svg")
	.remove();

var width = 960;
	var height = 500;
	var color = d3.scale.category20();

var force = d3.layout.force()
	.charge(-120)
	.linkDistance(30)
	.size([width, height]);

var svg = d3.select("body").append("svg")
	.attr("width", width)
	.attr("height", height);

d3.json("community.json", function(error, graph){

force
		.nodes(graph.nodes)
		.links(graph.links)
		.start();

var link = svg.selectAll(".link")
			.data(graph.links)
		.enter().append("line")
			.attr("class", "link")
			.style("stroke-width", function(d){ return Math.sqrt(d.value); });

var gnodes = svg.selectAll("g.gnode")
			.data(graph.nodes)
		.enter().append("g")
			.classed("gnodes", true);

var node = gnodes.append("circle")
			.attr("class", "node")
			.attr("r", 5)
			.style("fill", "steelblue")
			.call(force.drag);

gnodes.attr("transform", function(d){ return "translate(" + [d.x, d.y] + ")"; })
	});

});
}

</script>
</body>
</html>

Modified http://d3js.org/d3.v3.min.js to a secure url

https://d3js.org/d3.v3.min.js