설명

x, y 좌표 및 단위를 가진 포인트를 생성합니다.

Use ST_MakePoint to make points with XY, XYZ, or XYZM coordinates.

	For geodetic coordinates, X is longitude and Y is latitude

예시

	ST_AsEWKT is used for text output because ST_AsText does not support M values.

Create point with unknown SRID.

SELECT ST_AsEWKT(  ST_MakePointM(-71.1043443253471, 42.3150676015829, 10)  );

                                   st_asewkt
-----------------------------------------------
 POINTM(-71.1043443253471 42.3150676015829 10)

x, y 좌표 및 단위를 가진 포인트를 생성합니다.

SELECT ST_AsEWKT( ST_SetSRID(  ST_MakePointM(-71.104, 42.315, 10),  4326));

                                                st_asewkt
---------------------------------------------------------
SRID=4326;POINTM(-71.104 42.315 10)

Get measure of created point.

SELECT ST_M(  ST_MakePointM(-71.104, 42.315, 10)  );

result
-------
10

참고

ST_AsEWKT, ST_MakePoint, ST_SetSRID