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By mswatcher
via codeflow.org
Submitted: Feb 04 2013 / 09:47

You might have encountered heatmaps for data visualization before. There is a fabulous library, heatmap.js, which brings that capability to draw them to javascript. There is only one problem, it is not exactly fast. Sometimes that doesn't matter. But if you have hundreds of thousands of data points to plot, or need realtime performance, it gets tricky. To solve that I've written a little engine using WebGL for drawing
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