[postgis-users] 2d and 3d?

[Kai Behncke]

Dear list,

A thing in PostGIS that I don`t understand is the factor 3d.

For example there are the commands:
SELECT perimeter2d(the_geom) from table
and
SELECT perimeter3d(the_geom) from table.


Is is really possible to store 3d-data in PostGIS?
Does anybody has an example for how to insert 3d-data in a table?

Thank you very much in advance, Kai

--
Dipl.-Geogr. Dipl.-Umweltwiss. Kai Behncke

Institut für Geoinformatik und Fernerkundung (IGF)
Universität Osnabrück
Kolpingstr. 7
49074 Osnabrück

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Tel.: +49 541 969-4450
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