[postgis-users] Problem with Geomunion after upgrade

[strk at refractions.net]

Ok. HEAD branch of CVS (LWGEOM) contains code to handle
SRID homogeneity and also Z value check (Z is no more
printed if not available from GEOS).

--strk;

On Mon, Nov 15, 2004 at 08:36:16PM -0800, Paul Ramsey wrote:
> Well, it's not catastrophic, but it seems pretty obvious that an 
> operation on a homogeneous set of geometries should return a result 
> with the same srid as the inputs. The same thing should be true of the 
> two-argument variants (intersection(), Union(), difference() and 
> buffer()).
> Paul
> 
> On 15-Nov-04, at 6:33 PM, Ethan Alpert wrote:
> 
> >So is this a bug? FWIW the work around for me was to enclose 
> >geomunion, intersection, etc calls in setSRID() calls.
> >  
> >-e
> >
> >
> >From: postgis-users-bounces at postgis.refractions.net on behalf of 
> >strk at refractions.net
> >Sent: Mon 11/15/2004 1:22 PM
> >To: PostGIS Users Discussion
> >Cc: Paul Ramsey
> >Subject: Re: [postgis-users] Problem with Geomunion after upgrade
> >
> >
> >On Mon, Nov 15, 2004 at 12:24:54PM -0700, Ethan Alpert wrote:
> >>
> >>
> >> I upgraded to 0.9.0 (I'll have a post on what a PITA that was soon)
> >>
> >> Was it always the case that Geomunion returns and SRID=-1 ? I'm 
> >doing a
> >> geomunion of a table in which all geometries are SRID=4326. How come
> >> geomunion now drops the SRID? If this has always been the case then 
> >does
> >> that mean prior to 0.9.0 constaints weren't being checked?
> >>
> >> -e
> >
> >I've checked and it seems that in no version of postgis did
> >any overlay operation respected input geoms SRID.
> >Does anyone remember anything different from this ?
> >
> >--strk;
> >
> >
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