[geos-devel] isvalid info

Marcel Koopman publiek at home.nl
Fri May 7 07:44:00 EDT 2004


I want to know when a polygon is considered valid.

I have 696 polygons that are not valid, but 16583 that are.

In mapserver i can draw all polygons.
These polygons are polygons on postal code level.

Can someone give me some info about isvalid?



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