<!doctype html>
<html>
<head>
<title>Graph | Random nodes</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
for (var i = 0; i < 15; i++) {
nodes.push({
id: i,
label: String(i)
});
}
edges.push({
from: 0,
to: 1
});
edges.push({
from: 0,
to: 6
});
edges.push({
from: 0,
to: 13
});edges.push({
from: 0,
to: 11
});
edges.push({
from: 1,
to: 2
});
edges.push({
from: 2,
to: 3
});
edges.push({
from: 2,
to: 4
});
edges.push({
from: 3,
to: 5
});
edges.push({
from: 1,
to: 10
});
edges.push({
from: 1,
to: 7
});
edges.push({
from: 2,
to: 8
});
edges.push({
from: 2,
to: 9
});
edges.push({
from: 3,
to: 14
});
edges.push({
from: 1,
to: 12
});
nodes[0]["level"] = 0;
nodes[1]["level"] = 1;
nodes[2]["level"] = 3;
nodes[3]["level"] = 4;
nodes[4]["level"] = 4;
nodes[5]["level"] = 5;
nodes[6]["level"] = 1;
nodes[7]["level"] = 2;
nodes[8]["level"] = 4;
nodes[9]["level"] = 4;
nodes[10]["level"] = 2;
nodes[11]["level"] = 1;
nodes[12]["level"] = 2;
nodes[13]["level"] = 1;
nodes[14]["level"] = 5;
// create a graph
var container = document.getElementById('mygraph');
var data = {
nodes: nodes,
edges: edges
};
var options = {
hierarchicalLayout:true
};
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>Hierarchical Layout - User-defined</h2>
<div style="width:700px; font-size:14px;">
This example shows a user-defined hierarchical layout. If the user defines levels for nodes but does not do so for all nodes, an alert will show up and hierarchical layout will be disabled. Either all or none can be defined.
</div>
<br />
<div id="mygraph"></div>
<p id="selection"></p>
</body>
</html>