twedl/README.md

## README.md

      
    Raw
  

              README.md
            
          
    Visualize an Erdos-Renyi random graph.
Some resources: Many examples from Mike Bostock and D3 Noob, and here.

  
## index.html
<!DOCTYPE html>
<meta charset="utf-8">
<style>

.node {
  stroke: #fff;
  stroke-width: 1.5px;
}

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

</style>
<body>
<script src="https://cdnjs.cloudflare.com/ajax/libs/d3/3.5.6/d3.min.js" charset="utf-8"></script>
<script>

var nodes=[], //[{ "id": 0 }],
    links=[];

var width = 960,
    height = 500;

var color = d3.scale.category20();

var force = d3.layout.force()
    .charge(-50)
    .linkDistance(30)
    .size([width, height]);

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

// Create nodes here.
var N=100;
var p=0.005; //Math.log(N)/N; //0.005;

for (i = 0; i < N; i++) {
    nodes.push({"id": i});
}

for (i=0; i < N; i++ ) {
    for (j=0; j < N; j++) {
        var x=Math.random();
        if (x < p) {
            console.log(x);
            links.push({source: i, target: j});
        }
    }
}

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

var link = svg.selectAll(".link")
    .data(links)
    .enter().append("line")
    .attr("class", "link");

  var node = svg.selectAll(".node")
      .data(nodes)
    .enter().append("circle")
      .attr("class", "node")
      .attr("r", 5)
      .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; });

    node.attr("cx", function(d) { return d.x; })
        .attr("cy", function(d) { return d.y; });
  });

</script>

## thumbnail.png

      
    Raw
  

              thumbnail.png
	<!DOCTYPE html>
	<meta charset="utf-8">
	<style>

	.node {
	stroke: #fff;
	stroke-width: 1.5px;
	}

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

	</style>
	<body>
	<script src="https://cdnjs.cloudflare.com/ajax/libs/d3/3.5.6/d3.min.js" charset="utf-8"></script>
	<script>

	var nodes=[], //[{ "id": 0 }],
	links=[];

	var width = 960,
	height = 500;

	var color = d3.scale.category20();

	var force = d3.layout.force()
	.charge(-50)
	.linkDistance(30)
	.size([width, height]);

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

	// Create nodes here.
	var N=100;
	var p=0.005; //Math.log(N)/N; //0.005;

	for (i = 0; i < N; i++) {
	nodes.push({"id": i});
	}

	for (i=0; i < N; i++ ) {
	for (j=0; j < N; j++) {
	var x=Math.random();
	if (x < p) {
	console.log(x);
	links.push({source: i, target: j});
	}
	}
	}

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

	var link = svg.selectAll(".link")
	.data(links)
	.enter().append("line")
	.attr("class", "link");

	var node = svg.selectAll(".node")
	.data(nodes)
	.enter().append("circle")
	.attr("class", "node")
	.attr("r", 5)
	.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; });

	node.attr("cx", function(d) { return d.x; })
	.attr("cy", function(d) { return d.y; });
	});

	</script>