<!doctype html>
<html>
<head>
<title>Network | Groups</title>
<style>
body {
color:#ffffff;
font: 10pt arial;
background-color:#222222;
}
#mynetwork {
width: 600px;
height: 600px;
border: 1px solid lightgray;
background-color:#222222;
}
</style>
<script type="text/javascript" src="../../dist/vis.js"></script>
<link href="../../dist/vis.css" rel="stylesheet" type="text/css" />
<script type="text/javascript">
var nodes = null;
var edges = null;
var network = null;
var nodesData = null;
function destroy() {
if (network !== null) {
network.destroy();
network = null;
}
}
function draw() {
destroy();
var from, to;
nodes = [];
edges = [];
var color = 'gray';
var len = undefined;
// randomly create some nodes
var nodeCount = parseInt(document.getElementById('nodeCount').value);
var nodeOffset = 0;
var groupMin = 0;
var groupMax = parseInt(document.getElementById('groupCount').value);
var group = groupMin;
var groupLeader = []; // will contain the node id with the most links of each group
while (group < groupMax) {
// randomly create some nodes
var i = 0;
var cols = parseInt(Math.sqrt(nodeCount));
var connectionCount = [];
while (i < nodeCount) {
nodes.push({
id: i + nodeOffset,
label: String(i + nodeOffset),
group: group
});
connectionCount[i] = 0;
// create links in a scale-free-network way
if (i == 1) {
from = i;
to = 0;
edges.push({
from: from + nodeOffset,
to: to + nodeOffset,
length: len
});
connectionCount[from]++;
connectionCount[to]++;
}
else if (i > 1) {
var conn = (i - 1) * 2;
var rand = Math.floor(Math.random() * conn);
var cum = 0;
var j = 0;
while (j < connectionCount.length && cum < rand) {
cum += connectionCount[j];
j++;
}
from = i;
to = j;
edges.push({
from: from + nodeOffset,
to: to + nodeOffset,
length: len
});
connectionCount[from]++;
connectionCount[to]++;
}
i++;
}
// calculate the node with the most number of connections
var leader = 0;
for (var c in connectionCount) {
if (connectionCount.hasOwnProperty(c)) {
if (connectionCount[c] > connectionCount[leader]) {
leader = parseInt(c);
}
}
}
if (group > groupMin) {
// connect to the leader of this group to the leader of a random other group
from = leader + nodeOffset;
to = groupLeader[groupMin + parseInt(Math.random() * (group - groupMin))];
edges.push({
from: from,
to: to,
length: len
});
}
// add this leader to the list
groupLeader[group] = leader + nodeOffset;
nodeOffset += nodeCount;
group++;
}
nodesData = new vis.DataSet(nodes);
// create a network
var container = document.getElementById('mynetwork');
var data = {
nodes: nodesData,
edges: edges
};
var options = {
nodes: {
shape: 'dot',
radius:30,
font:{color:'#ffffff'},
borderWidth:2
}
};
network = new vis.Network(container, data, options);
}
</script>
<script>(function(i,s,o,g,r,a,m){i['GoogleAnalyticsObject']=r;i[r]=i[r]||function(){(i[r].q=i[r].q||[]).push(arguments)},i[r].l=1*new Date();a=s.createElement(o),m=s.getElementsByTagName(o)[0];a.async=1;a.src=g;m.parentNode.insertBefore(a,m)})(window,document,'script','//www.google-analytics.com/analytics.js','ga');ga('create', 'UA-61231638-1', 'auto');ga('send', 'pageview');</script></head>
<body onload="draw()">
<form onsubmit= "javascript: draw(); return false;">
Number of groups:
<input type="text" value="10" id="groupCount" style="width: 50px;">
Number of nodes per group:
<input type="text" value="3" id="nodeCount" style="width: 50px;">
<input type="submit" value="Go">
</form>
<br>
<div id="mynetwork"></div>
</body>
</html>