[postgis-users] why is this poly invalid?

Rob Agar robagar at westnet.com.au
Tue Oct 30 05:06:40 PDT 2007


Nicolas Ribot wrote:
> No, self-intersecting polygons are not valid in postgis.

OK, that makes sense.  But shouldn't st_issimple return false for a self 
intersecting poly?

 > Try to edit it to correct the intersection.

I will - it's just a matter of swapping a couple of points. But I'll 
tell the Great Barrier Reef Marine Park Authority that their data's dodgy :)

Rob



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