[postgis-users] Help with fixing invalid geometries

Markus Schaber schabi at logix-tt.com
Sat Nov 25 00:43:43 PST 2006

Hi, Rob,

Rob Tester wrote:
> I imported some shape files into postgres everything went well except
> that many (several thousand) of the polygons have self intersections. I
> was wondering if there was a way to easily find the point(s) on the
> polygon that causes the self intersection as well as then 'nudge' the
> point away from the line it is intersecting. I would prefer to not do
> this manually if possible. Any thoughts?

May be the polygonize function can help you.


Markus Schaber | Logical Tracking&Tracing International AG
Dipl. Inf.     | Software Development GIS

Fight against software patents in Europe! www.ffii.org

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