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by WestCoastJustin 2606 days ago
S2 Geometry [1] is a pretty cool library for anyone who hasn't need it before and it doing map stuff. They mention it in the article half way through. Allows you to programmatically bucket GPS data and quickly search adjoining cells, etc. I was using this for a wifi project a while back and was pretty awesome.

[1] http://s2geometry.io/