[postgis-devel] [PostGIS] #830: ST_UnaryUnion
PostGIS
trac at osgeo.org
Mon Feb 14 05:26:03 PST 2011
#830: ST_UnaryUnion
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Reporter: strk | Owner: strk
Type: enhancement | Status: new
Priority: medium | Milestone: PostGIS 2.0.0
Component: postgis | Version:
Keywords: |
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The function accepts any GEOS-convertible geometry and applies an unary
union on it. This functionality currently requires unioning anything with
the empty set as ST_Union contains a short-circuit refusing to do self-
union.
The union is optimized for the polygonal part of collections (which is
currently impossible to get with the ST_Union aggregate).
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Ticket URL: <http://trac.osgeo.org/postgis/ticket/830>
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