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I am working on angular vis.js. Vis.js works on canvas for creating nodes and links between the nodes.
Is there any way to get the image (jpeg/png) from the visj.s canvas?
842
Take a look on this snippet, i think it will help you
under the vis canvas you will see a PNG image. you can right click this image and save it. (or you can save it in any other standard way)
Good Luck.
// create an array with nodes
var nodes = new vis.DataSet([
{id: 1, label: 'Node 1'},
{id: 2, label: 'Node 2'},
{id: 3, label: 'Node 3'},
{id: 4, label: 'Node 4'},
{id: 5, label: 'Node 5'}
]);
// create an array with edges
var edges = new vis.DataSet([
{from: 1, to: 3},
{from: 1, to: 2},
{from: 2, to: 4},
{from: 2, to: 5}
]);
// create a network
var container = document.getElementById('mynetwork');
var data = {
nodes: nodes,
edges: edges
};
var options = {};
var network = new vis.Network(container, data, options);
network.on("afterDrawing", function (ctx) {
var dataURL = ctx.canvas.toDataURL();
document.getElementById('canvasImg').src = dataURL;
});#mynetwork {
width: 600px;
height: 400px;
border: 1px solid lightgray;
}
p {
max-width: 600px;
}<!doctype html>
<html>
<head>
<title>Network | Basic usage</title>
<script type="text/javascript" src="https://cdnjs.cloudflare.com/ajax/libs/vis/4.20.0/vis.min.js"></script>
<link href="https://cdnjs.cloudflare.com/ajax/libs/vis/4.20.0/vis.min.css" rel="stylesheet" type="text/css"/>
</head>
<body>
<div id="mynetwork"></div>
<pre id="eventSpan"></pre>
<img id="canvasImg" alt="Right click to save me!">
</body>
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