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.
104 lines
2.8 KiB
104 lines
2.8 KiB
<!doctype html>
|
|
<html>
|
|
<head>
|
|
<title>Graph | Random nodes</title>
|
|
|
|
<style type="text/css">
|
|
body {
|
|
font: 10pt sans;
|
|
}
|
|
</style>
|
|
|
|
<script type="text/javascript" src="../../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,
|
|
'text': 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]++;
|
|
}
|
|
}
|
|
|
|
// specify options
|
|
var options = {
|
|
width: '600px',
|
|
height: '600px',
|
|
edges: {
|
|
length: 50
|
|
},
|
|
stabilize: false
|
|
};
|
|
|
|
// create a graph
|
|
graph = new vis.Graph(document.getElementById('mygraph'));
|
|
|
|
// draw data
|
|
graph.draw(nodes, edges, options);
|
|
|
|
// add event listeners
|
|
vis.events.addListener(graph, 'select', function(params) {
|
|
document.getElementById('selection').innerHTML =
|
|
'Selection: ' + JSON.stringify(graph.getSelection());
|
|
});
|
|
}
|
|
</script>
|
|
</head>
|
|
|
|
<body onload="draw();">
|
|
|
|
<form onsubmit="draw(); return false;">
|
|
<label for="nodeCount">Number of nodes:</label>
|
|
<input id="nodeCount" type="text" value="25" style="width: 50px;">
|
|
<input type="submit" value="Go">
|
|
</form>
|
|
<br>
|
|
|
|
<div id="mygraph"></div>
|
|
|
|
<p id="selection"></p>
|
|
</body>
|
|
</html>
|