I believe the affine() functions support 3D if the z parameters are included. Bruce Rindahl
-----Original Message----- From: [EMAIL PROTECTED] [mailto:[EMAIL PROTECTED] On Behalf Of Paul Ramsey Sent: Monday, January 28, 2008 11:12 AM To: PostGIS Users Discussion Subject: Re: [postgis-users] 3D support in PostGIS On Jan 28, 2008, at 9:35 AM, Olivier Tournaire wrote: > Thanks Paul and Ben for your answers. > >> Z-values are ignored in tests, and occasionally used in building >> resultants for things like intersections. > > Is it possible to know which "things" ? Intersection. I intersect two lines that have Z components, what is the Z component of the resultant point? > Does PostGIS uses GEOS for spatial computations ? Yes > GEOS does not support 3D operations ? No, except for the exception above. P _______________________________________________ postgis-users mailing list [email protected] http://postgis.refractions.net/mailman/listinfo/postgis-users _______________________________________________ postgis-users mailing list [email protected] http://postgis.refractions.net/mailman/listinfo/postgis-users
