[QGIS-Developer] timzonefinder vs point in polygon
Andrea Giudiceandrea
andreaerdna at libero.it
Wed Feb 10 00:00:46 PST 2021
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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