FLOT data as image to write to PDF

Question

I am using jQuery/FLOT to draw a graph, I would like for the user to be able to download a PDF version of the graph. I am writing the PDF using ColdFusion. After creating th

Answer 1

You could render the chart on the server with a headless browser like phantomJS (WebKit engine).

You only need a script that takes an URL and renders the output as a Base64 encoded string to the console stream or writes an image.

As far as I know it's the only semi browser-independent way to do this.

Here's a script for phantomjs that outputs a given web page as base64 encoded image-string:

var page = require('webpage').create();
var system = require('system');

var pageUrl = system.args[1];

page.viewportSize = { width: 1280, height: 720 };
page.open(pageUrl , function () {
    console.log(page.renderBase64('PNG'));
    phantom.exit();
});