Point-in-poly using MySQL and Python

Posted Monday, March 17th, 2008 at 5:38 p.m.

A couple weeks before the Texas primaries, the Chronicle quietly launched a cool little app that allows readers in our eight-county area to see which political races they can vote in, simply by typing in their address. Some local governments around here offer similar features, but none as lightweight and seamless as what we put together.

I bring this up because the way we implemented this project answers one question the CAR community has chattered about a lot lately: namely, how to run effective point-within-polygon queries using MySQL’s spatial extensions, which don’t yet have the same muscle as ...

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