Hi Hugh, all functions in PostGIS will work on 2.5D data. So you have to add an extra condition for your z-range.
Gr Ralf Am Freitag 16 Juli 2010, 23:32:03 schrieb Hugh Stimson: > Hi PostGIS folks, > > I'm trying to find a way to read two 3-dimensional polygons and test if > they intersect. It's for a radar-bird-tracking application. I'm hoping > that PostGIS is a solution. > > I've been scanning the Mailing list archives, and I gather that at least > some of the spatial operations which PostGIS provides are 3d-enabled. > Which surprises me, as my understanding was that PostGIS spatial > operations descend from the Java Topological Suite via GEOS, and JTS > advertises itself as being specifically for 2-d linear modelling. > > Could I count on the ST_Intersects function to work with 3d data? Would > there likely be any special considerations for 3d? > > http://postgis.refractions.net/documentation/manual-1.5/ST_Intersects.html > > cheers, > > Hugh _______________________________________________ postgis-users mailing list [email protected] http://postgis.refractions.net/mailman/listinfo/postgis-users
