Mike, seems to me that you're confusing union with intersection. A union between valid polygons (including multipolygons) will always return a polygon or multipolygon.
On Sunday, April 13, 2014, Mike Toews <mwto...@gmail.com> wrote: > On 13 April 2014 16:56, Juan Pablo Caram <jpca...@gmail.com <javascript:;>> > wrote: > > Hi, > > Is this at all possible? The GeometryCollection has a LineString! > > Sure, this is possible. A union can return any type of geometry, from > GEOMETRYCOLLECTION EMPTY to POINT to anything else. If the result is a > LINESTRING, then the union of the two geometries share a boundary. If > it is in a GEOMETRYCOLLECTION, then there is a mixture of types in the > same result, such as POINT and POLYGON parts. All these are possible, > and not so strange when you look at them drawn out. > > -Mike > _______________________________________________ > Community mailing list > Community@lists.gispython.org <javascript:;> > http://lists.gispython.org/mailman/listinfo/community > -- Pimin Konstantin Balić Kefaloukos Anders Henriksens Gade 3, 2th 2300 Copenhagen S Denmark Phone: +45 2611 6003
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