<!doctype html>
<html>
<head>
<title>Network | Hierarchical layout</title>
<style type="text/css">
body {
font: 10pt sans;
}
#mynetwork {
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 network = null;
function destroy() {
if (network !== null) {
network.destroy();
network = null;
}
}
function draw() {
destroy();
// randomly create some nodes and edges
var nodeCount = document.getElementById('nodeCount').value;
//var data = getScaleFreeNetwork(nodeCount)
var nodes = [
{id: 4, label: '4'},
{id: 5, label: '5'},
{id: 7, label: '7'},
{id: 9, label: '9'},
{id: 10, label: '10'},
{id: 101, label: '101'},
{id: 102, label: '102'},
{id: 103, label: '103'}
];
// create an array with edges
var edges = [
{from: 10, to: 4},
{from: 7, to: 5},
{from: 9, to: 7},
{from: 10, to: 9},
{from: 101, to: 102},
{from: 102, to: 103}
];
var data = {
nodes: nodes,
edges: edges
};
// create a network
var container = document.getElementById('mynetwork');
var directionInput = document.getElementById("direction").value;
var options = {
interaction: {
navigationButtons: true
},
layout: {
hierarchical: {
direction: directionInput
}
}
};
network = new vis.Network(container, data, options);
// add event listeners
network.on('select', function (params) {
document.getElementById('selection').innerHTML = 'Selection: ' + params.nodes;
});
}
function changeOptions(directionInputValue) {
network.setOptions({
layout: {
hierarchical: {
direction: directionInputValue
}
}
});
}
</script>
</head>
<body onload="draw();">
<h2>Hierarchical Layout - Scale-Free-Network</h2>
<div style="width:700px; font-size:14px; text-align: justify;">
This example shows the randomly generated <b>scale-free-network</b> set of nodes and connected edges from example 2.
In this example, hierarchical layout has been enabled and the vertical levels are determined automatically.
</div>
<br/>
<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>
<p>
<input type="button" id="btn-UD" value="Up-Down">
<input type="button" id="btn-DU" value="Down-Up">
<input type="button" id="btn-LR" value="Left-Right">
<input type="button" id="btn-RL" value="Right-Left">
<input type="hidden" id='direction' value="UD">
</p>
<script language="javascript">
var directionInput = document.getElementById("direction");
var btnUD = document.getElementById("btn-UD");
btnUD.onclick = function () {
directionInput.value = "UD";
changeOptions(directionInput.value);
}
var btnDU = document.getElementById("btn-DU");
btnDU.onclick = function () {
directionInput.value = "DU";
changeOptions(directionInput.value);
};
var btnLR = document.getElementById("btn-LR");
btnLR.onclick = function () {
directionInput.value = "LR";
changeOptions(directionInput.value);
};
var btnRL = document.getElementById("btn-RL");
btnRL.onclick = function () {
directionInput.value = "RL";
changeOptions(directionInput.value);
};
</script>
<br>
<div id="mynetwork"></div>
<p id="selection"></p>
</body>
</html>