Depends what you are trying to do. PostGIS has very primitive support for 3D.
1) 3D volumetric objects are not supported
2) 3D non-volume are supported partly -- e.g. a 2D polygon in 3 d space, a
line, point in 3d space.
3) Spatial relationships however only really consider the spatial component of
the x, y plane.
There is work in that area - for example
http://www.foss4g2007.org/presentations/view.php/224
And work is going on in general to expand the PostGIS underlying geometry
structure to support more types
such as some missing curve support types and in future TIN and so forth.
-----Original Message-----
From: [email protected] on behalf of Brian Sanjeewa
Rupasinghe
Sent: Thu 1/1/2009 9:30 PM
To: [email protected]
Subject: [postgis-users] 3D Topology
Hi,
My question is: Does PostGIS support 3D topology?
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