Generating a KML heatmap from given data set of [lat, lon, density]

Posted by Will Croft on Stack Overflow See other posts from Stack Overflow or by Will Croft
Published on 2010-03-05T20:05:29Z Indexed on 2010/03/31 20:03 UTC
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I am looking to build a static KML (Google Earth markup) file which displays a heatmap-style rendering of a few given data sets in the form of [lat, lon, density] tuples.

A very straightforward data set I have is for population density.

My requirements are:

must be able to feed in data for a given lat, lon
must be able to specific the given density of the data at that lat, lon
must export to KML

The requirements are language agnostic for this project as I will be generating these files offline in order to build the KML used elsewhere.

I have looked at a few projects, most notably heatmap.py, which is a port of gheat in Python with KML export. I have hit a brick wall in the sense that the projects I have found to date all rely on building the heatmap from the density of [lat, lon] points fed into the algorithm.

If I am missing an obvious way to adapt my data set to feed in just the [lat, lon] tuples but adjusting how I feed them using the density values I have, I would love to know!

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