[postgis-devel] Is errorIfGeometryCollection necessary for relate ops?

[Sandro Santilli]

On Fri, Apr 10, 2015 at 10:40:32AM -0700, Martin Davis wrote:
> re what is happening in Shapely with relate on GeometryCollections:
> 
> In fact, homogeneous GeometryCollections of Points and LineStrings can be
> trivially converted to MultiPoints and MultiLineStrings.  Is is possible
> that Shapely is doing this automatically?
> 
> Handling homogeneous GCs would be a nice enhancement for JTS & GEOS....

There's actually a ST_CollectionHomogenize function in PostGIS that
can be used to do just that.

--strk;