ashwinnair
Joined 10 years ago
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33
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Member since
Aug 8
Joined 10 years ago
One sample use case would be, if you want to find which polygon (building or administrative regions like states or cities) a given location falls into, doing a point in polygon for a huge set wouldn't be the best solution. Here comes the use of geohash and s2 cells. Using GeoRaptor on the initial set of geohashes reduces the search space considerably. For instance, the entire shape of the US creates 18 million geohashes which get reduced to ~220K when compressed.
I didn't get this completely. :)
This was something that hadn't been solved using geohashes. Intention was to just bring out 'geohash'y of solution to proximity search.