You can not select more than 25 topics
Topics must start with a letter or number, can include dashes ('-') and can be up to 35 characters long.
138 lines
4.0 KiB
138 lines
4.0 KiB
<!doctype html>
|
|
<html>
|
|
<head>
|
|
<title>Graph | Scale free graph clustering</title>
|
|
|
|
<style type="text/css">
|
|
body {
|
|
font: 10pt sans;
|
|
}
|
|
#mygraph {
|
|
width: 600px;
|
|
height: 600px;
|
|
border: 1px solid lightgray;
|
|
}
|
|
</style>
|
|
|
|
<script type="text/javascript" src="../../dist/vis.js"></script>
|
|
|
|
<script type="text/javascript">
|
|
var nodes = null;
|
|
var edges = null;
|
|
var graph = null;
|
|
|
|
function draw() {
|
|
nodes = [];
|
|
edges = [];
|
|
var connectionCount = [];
|
|
|
|
// randomly create some nodes and edges
|
|
var nodeCount = document.getElementById('nodeCount').value;
|
|
for (var i = 0; i < nodeCount; i++) {
|
|
nodes.push({
|
|
id: i,
|
|
label: String(i)
|
|
});
|
|
|
|
connectionCount[i] = 0;
|
|
|
|
// create edges in a scale-free-graph way
|
|
if (i == 1) {
|
|
var from = i;
|
|
var to = 0;
|
|
edges.push({
|
|
from: from,
|
|
to: to
|
|
});
|
|
connectionCount[from]++;
|
|
connectionCount[to]++;
|
|
}
|
|
else if (i > 1) {
|
|
var conn = edges.length * 2;
|
|
var rand = Math.floor(Math.random() * conn);
|
|
var cum = 0;
|
|
var j = 0;
|
|
while (j < connectionCount.length && cum < rand) {
|
|
cum += connectionCount[j];
|
|
j++;
|
|
}
|
|
|
|
var from = i;
|
|
var to = j;
|
|
edges.push({
|
|
from: from,
|
|
to: to
|
|
});
|
|
connectionCount[from]++;
|
|
connectionCount[to]++;
|
|
}
|
|
}
|
|
|
|
// create a graph
|
|
var clusteringOn = document.getElementById('clustering').checked;
|
|
var clusterEdgeThreshold = parseInt(document.getElementById('clusterEdgeThreshold').value);
|
|
var container = document.getElementById('mygraph');
|
|
var data = {
|
|
nodes: nodes,
|
|
edges: edges
|
|
};
|
|
/*
|
|
var options = {
|
|
nodes: {
|
|
shape: 'circle'
|
|
},
|
|
edges: {
|
|
length: 50
|
|
},
|
|
stabilize: false
|
|
};
|
|
*/
|
|
var options = {
|
|
clustering: {
|
|
enabled: clusteringOn,
|
|
clusterEdgeThreshold: clusterEdgeThreshold
|
|
},
|
|
stabilize: false
|
|
};
|
|
graph = new vis.Graph(container, data, options);
|
|
|
|
// add event listeners
|
|
graph.on('select', function(params) {
|
|
document.getElementById('selection').innerHTML = 'Selection: ' + params.nodes;
|
|
});
|
|
}
|
|
</script>
|
|
</head>
|
|
|
|
<body onload="draw();">
|
|
<h2>Clustering - Scale-Free-Graph</h2>
|
|
<div style="width:700px; font-size:14px;">
|
|
This example shows the randomly generated <b>scale-free-graph</b> set of nodes and connected edges from example 2.
|
|
By clicking the checkbox you can turn clustering on and off. If you increase the number of nodes to
|
|
a value higher than 100, automatic clustering is used before the initial draw (assuming the checkbox is checked).
|
|
<br />
|
|
<br />
|
|
Clustering is done automatically when zooming out. When zooming in over the cluster, the cluster pops open. When the cluster is very big, a special instance
|
|
will be created and the cluster contents will only be simulated in there. Double click will also open a cluster.
|
|
<br />
|
|
<br />
|
|
Try values of 500 and 5000 with and without clustering. All thresholds can be changed to suit your dataset.
|
|
Experiment with the clusterEdgeThreshold, which increases the formation of clusters when zoomed out (assuming the checkbox is checked).
|
|
</div>
|
|
<br />
|
|
<form onsubmit="draw(); return false;">
|
|
<label for="nodeCount">Number of nodes:</label>
|
|
<input id="nodeCount" type="text" value="125" style="width: 50px;">
|
|
<label for="clustering">Enable Clustering:</label>
|
|
<input id="clustering" type="checkbox" onChange="draw()" checked="true">
|
|
<label for="clusterEdgeThreshold">clusterEdgeThreshold:</label>
|
|
<input id="clusterEdgeThreshold" type="text" value="20" style="width: 50px;">
|
|
<input type="submit" value="Go">
|
|
</form>
|
|
<br>
|
|
|
|
<div id="mygraph"></div>
|
|
|
|
<p id="selection"></p>
|
|
</body>
|
|
</html>
|