[postgis-users] Intersection not implemented for Multipolygon ?
"R. Müller"
r.mueller at unicomp-berlin.de
Fri May 13 05:02:11 PDT 2005
Hi Group,
imagine following query:
select astext(intersection(geom,boxgeom)) from table;
'table' is a table with a geometry-column of type 'geometry' because it
mix up polygons and multipolygons.
that means in the query above column 'geom' contains polygon and
multipolygons.
the boxgeom to intersect with is a simple constant box as a geometry.
the resultset contains only values for the polygons not for the
multipolygons, but throws no exceptions.
i use postgres 7.4.7 and postgis 1.0RC2 with geos and proj4.
any hint ?
should i use only one geometry-type per table (for instance converting
all polygons to multipolygons) ?
thanks
Ronald
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