[postgis-users] ST_Union (8.4) and TopologyException

[Paragon Corporation]

Mark,

To add I think Simon's dataset was too big to go thru 1.3 at a decent time
(as I recall think its about 3000 polygons he's dealing with).  I think I
have run into some of these issues myself in my torture tests but ignored
them since they passed regress (I mean all versions failed) and I didn't
absolutely verify they weren't invalid, but I'll try to dig some of these up
to verify they were invalid.  

I suspect its a 1.3 issue as well, but I expect we'll see more of these
kinds of things popping up as people will be more able to handle larger
geometries and thus will be stress testing PostGIS more.

Thanks,
Regina

-----Original Message-----
From: postgis-users-bounces at postgis.refractions.net
[mailto:postgis-users-bounces at postgis.refractions.net] On Behalf Of Simon
Greener
Sent: Wednesday, August 05, 2009 5:49 AM
To: PostGIS Users Discussion
Subject: Re: [postgis-users] ST_Union (8.4) and TopologyException

Mark,

> I think there are two things to ask here: firstly, when you say that 
> you were trying out the new ST_Union() in 1.4, does that mean that 
> your query worked in 1.3?

I didn't try it in 1.3. The task came after 1.4.

> And secondly, which version of GEOS are you using?
> ( SELECT postgis_full_version(); )

Good point.

"POSTGIS="1.4.0" GEOS="3.1.1-CAPI-1.6.0" PROJ="Rel. 4.6.1, 21 August 2008"
USE_STATS"

S.
--
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