> what if the majority of points of interest end up in single grid square in your example?
Geohash provides arbitrary precision, at 8 character length, we can measure difference in in the order of decameters iirc.
The edge cases are on the literal edges, where you could have two points, one at say -79.995, 35.0 and -80.001, 35.0, so the area is split at -80 and the first point has different prefix than the second even though they are very very close.
Geohash provides arbitrary precision, at 8 character length, we can measure difference in in the order of decameters iirc.
The edge cases are on the literal edges, where you could have two points, one at say -79.995, 35.0 and -80.001, 35.0, so the area is split at -80 and the first point has different prefix than the second even though they are very very close.