Name
ST_Zmflag — returns bits indicating presence of Z and/or M coordinates.
Synopsis
ST_Zmflag
( |
in g any ); |
Description
Returns bits indicating presence of Z and/or M coordinates. 0 means that the shape has only X and Y, 1 means that M is also in use (but not Z), 2 means Z but ont M, 3 is for both M and Z.
Parameters
g
Geometry
Return Types
Returns integer.
Examples
Example24.682.Simple Use
SELECT ST_Zmflag( st_point (10, 20, 30, 40)); unnamed INTEGER 3