Intersections are calculated in the X/Y plane and Z values for constructed geometries are interpolated from the Z values of the inputs.
P On Sun, Apr 5, 2009 at 1:24 AM, Jim Jim <[email protected]> wrote: > Hello, > > I am a little puzzled by the following: > > select asEWKT(ST_Intersection( > ('POLYGON((0 0 0,4 0 0,4 4 0,0 4 0,0 0 0),(1 1 0,2 1 0,2 2 0,1 2 0,1 1 > 0))'), > ('POINT(0 4 -1000)') > )); > > Result: "POINT(0 4 -500)" > > Since the point is not in the polygon the intersection should be empty. > Please let me know why this is behaving otherwise. If I am missing > something, could you please let me know what would be the way to get the > answer I was expecting? > > Thank you! > > ________________________________ > Share your photos with Windows Live Photos – Free. Try it Now! > _______________________________________________ > 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
