[postgis-users] GeomUnion returns a Null geometry

[Markus Schaber]

HI, Arnaud,

Arnaud Lesauvage wrote:

> I join to this message a csv of the problematic dataset.

> gid;geom
> 100013;MULTIPOLYGON((([...])))
> ;
> ;
> ;
> ;

Sounds like only the first of your five polygons was output.

Could the others be null?

Could you give us the results of

  SELECT gid;geom is null;isvalid(geom) FROM yourtable;


Thanks,
Markus


-- 
Markus Schaber | Logical Tracking&Tracing International AG
Dipl. Inf.     | Software Development GIS

Fight against software patents in Europe! www.ffii.org
www.nosoftwarepatents.org