id	summary	reporter	owner	description	type	status	priority	milestone	component	version	resolution	keywords	cc
103	Box3D always gets cast to 2D geometry	robe	strk	"Actually not sure if this is solvable.  But ST_SetSRID, ST_Force_3DZ all
lose the Z coordinate value of a BOX3D.

Example:

SELECT ST_AsEWKT(ST_Force_3DZ(ST_Extent3D(foo.the_geom))) As b3extentpoly,
ST_Extent3D(foo.the_geom) As b3extent
FROM (SELECT ST_MakePoint(x,y,z) As the_geom
	FROM generate_series(1,3) As x
		CROSS JOIN generate_series(1,2) As y
		CROSS JOIN generate_series(0,2) As Z) As foo;

Yields:
b3extentpoly                                 b3extent
POLYGON((1 1 0,1 2 0,3 2 0,3 1 0,1 1 0)) ;BOX3D(1 1 0,3 2 2)

I would expect the POLYGON value to have some 2 z coords in there.



"	task	closed	medium	PostGIS 2.0.0	postgis	trunk	wontfix	boxes