[postgis-devel] EMPTY

Paul Ramsey pramsey at cleverelephant.ca
Tue Oct 6 13:41:14 PDT 2009


And I've added these for discussion:

ST_NumGeometries(empty) == 0
ST_NumRings(empty) == 0
ST_NumPoints(empty) == 0
ST_GeometryN(empty, n) == empty
ST_RingN(geometry, n) == empty
ST_Area(empty) == 0
ST_Length(empty) == 0



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