[postgis-users] GEOS union() error

[Lee Keel]

> -----Original Message-----
> From: postgis-users-bounces at postgis.refractions.net [mailto:postgis-users-
> bounces at postgis.refractions.net] On Behalf Of Obe, Regina
> Sent: Wednesday, November 07, 2007 8:22 AM
> To: PostGIS Users Discussion
> Subject: RE: [postgis-users] GEOS union() error
> 
> Lee,
> 
> Did you try the collect buffer?
> 
> I'm not sure why we have that explicit in the documentation - could be
> left over from another time? Should we remove that from the
> documentation.
> 
> I've done it and it works fine except when I had some invalid geometries
> I think it created some strange results but never errored out.
> 
> Hope that helps,
> Regina
> 
> 
[Lee Keel] 

I didn't try it, but I will if you say it will return reliable results.  I
was just unsure what the result set would be when using buffer on a geometry
collection; will it return a geometry collection of polygons, or return one
large multipolygon (which is what I am looking for)?

I agree that if buffer() will accept a geometrycollection, then it should be
removed from the documentation.  The same warning is in the documentation in
a few places, is this the only place that it is valid now?  

-LK
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