제목
ST_MSize — Returns the M size of a geometry.
요약
float ST_MSize(geometry geom);
설명
Returns the M size of a geometry, computed as ST_MMax(geom) - ST_MMin(geom), or null if the geometry lacks M values.
This function supports 3d and will not drop the z-index.
This method supports Circular Strings and Curves.
Availability: 3.7.0
예시
Code
SELECT ST_MSize('LINESTRING M (1 2 3,4 6 8)');
래스터 출력
5
Figure