[GRASS-dev] 3D polygons and co-planarity

Markus Metz markus.metz.giswork at googlemail.com
Fri Nov 4 12:21:25 EDT 2011

Benjamin Ducke wrote:
> Does v.clean currently check and ensure that
> all vertices of a polygon lie in the same plane?
> Also if the vertices have Z coordinates?

No. GRASS vector topology is pure 2D, Z coordinates are only dragged
along while cleaning.

Markus M

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