js-graph-algorithms
Version:
Package implements data structures and algorithms for processing various types of graphs
105 lines (92 loc) • 4.39 kB
HTML
<html>
<head>
<title>
Weighted DiGraph
</title>
<script src="../third-party-libs/vis/vis.js" type="text/javascript"></script>
<script src="../src/jsgraphs.js" type="text/javascript"></script>
<link href="../third-party-libs/vis/vis.css" type="text/css" />
</head>
<body>
<h2>Weighted DiGraph</h2>
<div id="mynetwork"></div>
<script type="text/javascript">
(function(){
var g = new jsgraphs.WeightedDiGraph(8);
g.addEdge(new jsgraphs.Edge(0, 1, 5.0));
g.addEdge(new jsgraphs.Edge(0, 4, 9.0));
g.addEdge(new jsgraphs.Edge(0, 7, 8.0));
g.addEdge(new jsgraphs.Edge(1, 2, 12.0));
g.addEdge(new jsgraphs.Edge(1, 3, 15.0));
g.addEdge(new jsgraphs.Edge(1, 7, 4.0));
g.addEdge(new jsgraphs.Edge(2, 3, 3.0));
g.addEdge(new jsgraphs.Edge(2, 6, 11.0));
g.addEdge(new jsgraphs.Edge(3, 6, 9.0));
g.addEdge(new jsgraphs.Edge(4, 5, 5.0));
g.addEdge(new jsgraphs.Edge(4, 6, 20.0));
g.addEdge(new jsgraphs.Edge(4, 7, 5.0));
g.addEdge(new jsgraphs.Edge(5, 2, 1.0));
g.addEdge(new jsgraphs.Edge(5, 6, 13.0));
g.addEdge(new jsgraphs.Edge(7, 5, 6.0));
g.addEdge(new jsgraphs.Edge(7, 2, 7.0));
var dijkstra = new jsgraphs.Dijkstra(g, 0);
var g_nodes = [];
var g_edges = [];
for(var v=0; v < g.V; ++v){
g.node(v).label = 'Node ' + v; // assigned 'Node {v}' as label for node v
g_nodes.push({
id: v,
label: g.node(v).label
});
}
for(var v = 1; v < g.V; ++v){
if(dijkstra.hasPathTo(v)){
var path = dijkstra.pathTo(v);
console.log('=====path from 0 to ' + v + ' start==========');
for(var i = 0; i < path.length; ++i) {
var e = path[i];
console.log(e.from() + ' => ' + e.to() + ': ' + e.weight);
g_edges.push({
from: e.from(),
to: e.to(),
length: e.weight,
label: '' + e.weight,
arrows:'to',
color: '#00ff00'
});
}
console.log('=====path from 0 to ' + v + ' end==========');
console.log('=====distance: ' + dijkstra.distanceTo(v) + '=========');
}
}
for(var v=0; v < g.V; ++v) {
var adj_v = g.adj(v);
for(var i = 0; i < adj_v.length; ++i) {
var e = adj_v[i];
var w = e.other(v);
g_edges.push({
from: v,
to: w,
length: e.weight,
label: '' + e.weight,
arrows:'to'
});
};
}
console.log(g.V); // display 6, which is the number of vertices in g
console.log(g.adj(0)); // display [5, 1, 2], which is the adjacent list to vertex 0
var nodes = new vis.DataSet(g_nodes);
// create an array with edges
var edges = new vis.DataSet(g_edges);
// create a network
var container = document.getElementById('mynetwork');
var data = {
nodes: nodes,
edges: edges
};
var options = {};
var network = new vis.Network(container, data, options);
})();
</script>
</body>
</html>