[QGIS-Developer] timzonefinder vs point in polygon

[Andrea Giudiceandrea]

Nyall Dawson wrote
> Just to add to this -- if you pre-prepared the timezone polygon
> geometries and cached all the results then that's the fastest speed
> you'll ever achieve :) (at the cost of memory usage, however!)

timezonefinder uses precomputed lookup binary tables (~50MB) based on a
0.5deg_lonx1deg_lat grid to avoid most of the time to actually check which
timezone polygon a point is located in.

Regards.

Andrea



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