ST_IsCollection — Returns TRUE
if the argument is a
collection (MULTI*
, GEOMETRYCOLLECTION
, ...)
boolean ST_IsCollection(
geometry g)
;
Returns TRUE
if the geometry type of
the argument is either:
GEOMETRYCOLLECTION
MULTI{POINT,POLYGON,LINESTRING,CURVE,SURFACE}
COMPOUNDCURVE
This function analyzes the type of the geometry. This means
that it will return |
This function supports 3d and will not drop the z-index.
This method supports Circular Strings and Curves
postgis=# SELECT ST_IsCollection('LINESTRING(0 0, 1 1)'::geometry); st_iscollection ------------- f (1 row) postgis=# SELECT ST_IsCollection('MULTIPOINT EMPTY'::geometry); st_iscollection ------------- t (1 row) postgis=# SELECT ST_IsCollection('MULTIPOINT((0 0))'::geometry); st_iscollection ------------- t (1 row) postgis=# SELECT ST_IsCollection('MULTIPOINT((0 0), (42 42))'::geometry); st_iscollection ------------- t (1 row) postgis=# SELECT ST_IsCollection('GEOMETRYCOLLECTION(POINT(0 0))'::geometry); st_iscollection ------------- t (1 row)