Name

ST_Force_3D — Forces the geometries into XYZ mode. This is an alias for ST_Force_3DZ.

Synopsis

geometry ST_Force_3D(geometry geomA);

Description

Forces the geometries into XYZ mode. This is an alias for ST_Force_3DZ. If a geometry has no Z component, then a 0 Z coordinate is tacked on.

This function supports 3d and will not drop the z-index.

This method supports Circular Strings and Curves

Examples

		--Nothing happens to an already 3D geometry
		SELECT ST_AsEWKT(ST_Force_3D(ST_GeomFromEWKT('CIRCULARSTRING(1 1 2, 2 3 2, 4 5 2, 6 7 2, 5 6 2)')));
				   st_asewkt
-----------------------------------------------
 CIRCULARSTRING(1 1 2,2 3 2,4 5 2,6 7 2,5 6 2)


SELECT  ST_AsEWKT(ST_Force_3D('POLYGON((0 0,0 5,5 0,0 0),(1 1,3 1,1 3,1 1))'));

						 st_asewkt
--------------------------------------------------------------
 POLYGON((0 0 0,0 5 0,5 0 0,0 0 0),(1 1 0,3 1 0,1 3 0,1 1 0))
		

See Also

ST_AsEWKT, ST_Force_2D, ST_Force_3DM, ST_Force_3DZ