[postgis-users] PostGIS 1.3.3 on Windows XP Unstable

Martin Davis mbdavis at refractions.net
Thu Aug 14 15:03:00 PDT 2008

It's your bad luck to have geometries that make PostGIS fail...   8^)

If there's geometries which cause problems with certain operations, the 
most helpful thing to do is to post them along with a description of the 
problem.  That gives a fighting chance to fix them when further 
development is done.

So Java2D worked on your problem?  I have to admit, I'm impressed how 
robust Java2D is.  If I could understand their algorithm I'd be keen on 
trying to follow their approach to get the same level of robustness in 

Bresnahan, Mike wrote:
> Hash: SHA256
> Welp, I think I have given up on trying to do the union inside PostGIS
> because I can't make it fast and reliable. Instead I have decided to use
> Java2D to perform the union. I ended up doing the same thing with
> Oracle. Both Oracle and PostGIS have been bad at doing CAG operations
> when compared to Java2D and ESRI ArcGIS. Is that just my bad luck or is
> there something fundamental going on here?

Martin Davis
Senior Technical Architect
Refractions Research, Inc.
(250) 383-3022

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