Algorithm for heat map?

Posted by eshan on Stack Overflow See other posts from Stack Overflow or by eshan
Published on 2010-02-26T17:57:36Z Indexed on 2010/03/27 15:53 UTC
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I have a list of values each with latitude and longitude. I'm looking to create a translucent heatmap image to overlay on Google Maps. I know there are server side and flash based solutions already, but I want to build this in javascript using the canvas tag.

However, I can't seem to find a concise description of the algorithm used to turn coordinates and values into a heatmap. Can anyone provide or link to one?

Thanks.

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