[postgis-users] ST_Buffer returning multipolygons

[Francois Hugues]

Hi,

We don't know what are your original geometries or what kind of buffer
you apply (since you work with linestrings we can assume it is a
positive buffer). Maybe some of your linestrings are multilinestrings
with disjoint components.

Did you try GeomeryType (geom) group by Geometry types ? What about
st_dump(geom) ?

You may have some more information here :
http://postgis.net/docs/manual-2.0/using_postgis_dbmanagement.html#OGC_V
alidity

Hugues. 


-----Original Message-----
From: postgis-users-bounces at lists.osgeo.org
[mailto:postgis-users-bounces at lists.osgeo.org] On Behalf Of marquz74
Sent: Friday, January 18, 2013 1:58 PM
To: postgis-users at postgis.refractions.net
Subject: Re: [postgis-users] ST_Buffer returning multipolygons

Hi,
thank for your interest.
The input geometries are actually linestrings (streams layer), so I
don't understand why I get MP.

Marco.



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