PostGIS
Description
Returns TRUE if the geometry type of the argument a geometry
collection type. Collection types are the following:
-
GEOMETRYCOLLECTION
-
MULTI\{POINT,POLYGON,LINESTRING,CURVE,SURFACE}
-
COMPOUNDCURVE
|
This function
supports 3d and will not drop the z-index.
This method
supports Circular Strings and Curves
Examples
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)