Nome
ST_ZMFlag — Retorna a dimensão da coordenada do valor ST_Geometry.
Sinopse
smallint ST_ZMFlag(geometry geomA);
Descrição
Retorna a dimensão da coordenada do valor ST_Geometry.
Values are: 0 = 2D, 1 = 3D-M, 2 = 3D-Z, 3 = 4D.
This function supports 3d and will not drop the z-index.
This method supports Circular Strings and Curves.
Exemplos
Code
SELECT ST_ZMFlag('LINESTRING(1 2,3 4)');
Raster Outputs
0
Code
SELECT ST_ZMFlag('LINESTRINGM(1 2 3, 3 4 3)');
Raster Outputs
1
Code
SELECT ST_ZMFlag('CIRCULARSTRING(1 2 3,3 4 3,5 6 3)');
Raster Outputs
2
Code
SELECT ST_ZMFlag('POINT(1 2 3 4)');
Raster Outputs
3