Created
November 20, 2010 21:22
-
-
Save jfsiii/708166 to your computer and use it in GitHub Desktop.
Creating a Flot chart using node-canvas
This file contains bidirectional Unicode text that may be interpreted or compiled differently than what appears below. To review, open the file in an editor that reveals hidden Unicode characters.
Learn more about bidirectional Unicode characters
var document = require("jsdom").jsdom(), | |
window = document.createWindow(), | |
jQuery = require('jquery').create(window), | |
fs = require('fs'), | |
script = document.createElement("script"); | |
window.Canvas = require('canvas'); | |
script.src = 'https://gist.github.com/raw/790339/3b0171c3e9b749bb93fff5d642eaa687f02939a5/jquery.flot.node-canvas.js'; | |
script.onload = function () | |
{ | |
var i, d1 = [], d2 = [], d3 = []; | |
for (i = 10; --i;) d1.push([i, parseInt(Math.random() * 30)]); | |
for (i = 10; --i;) d2.push([i, parseInt(Math.random() * 30)]); | |
for (i = 10; --i;) d3.push([i, parseInt(Math.random() * 30)]); | |
var defaults = { | |
lines: { show: true, fill: true, steps: false }, | |
bars: { show: false, barWidth: 0.6 } | |
}; | |
var data = [ | |
jQuery.extend(true, {}, defaults, {data: d1}), | |
jQuery.extend(true, {}, defaults, {data: d2}), | |
jQuery.extend(true, {}, defaults, {data: d3}) | |
]; | |
var options = { | |
width: 600, height: 300, | |
grid: {clickable: true, hoverable: true} | |
}; | |
var placeholder = jQuery(''), // empty jQuery object | |
plot = jQuery.plot(placeholder, data, options), | |
node_canvas = plot.getCanvas(), | |
ctx = node_canvas.getContext('2d'), | |
out = fs.createWriteStream(__dirname + '/flot.png'), | |
stream = node_canvas.createPNGStream(); | |
stream.on('data', function ( chunk ) { | |
out.write(chunk); | |
}); | |
}; | |
document.head.appendChild(script); |
Sign up for free
to join this conversation on GitHub.
Already have an account?
Sign in to comment
@mgan59 see my updated gist @ https://gist.github.com/842175 which uses
jsdom 0.2.0