3 ms·
See also this http://www.drdobbs.com/database/space-filling-curves-in-geospatial-appli/184410998 http://www.drdobbs.com/database/space-filling-curves-in-geos...
by Pamar 8y ago
See also this http://www.drdobbs.com/database/space-filling-curves-in-geospatial-appli/184410998 http://www.drdobbs.com/database/space-filling-curves-in-geos... (Dr.Dobbs Journal, 1999).
It explains how to easily search for "points no more than X km from Y" in a DB query without having to actually calculate distances.
- thanatropism 8y agoI wonder if space filling curves are used in the Python GIS stack for radius queries.