PostGIS

ST_CoordDim

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8.4. Geometry Accessors

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Name

ST_CoordDim — Return the coordinate dimension of a geometry.

Synopsis

integer +`*`+ST_CoordDim*(`geometry `geomA`)`;

Description

Return the coordinate dimension of the ST_Geometry value.

This is the MM compliant alias name for ST_NDims

[.inlinemediaobject]check This method implements the OGC Simple Features Implementation Specification for SQL 1.1.

check This method implements the SQL/MM specification. SQL-MM 3: 5.1.3

check This method supports Circular Strings and Curves

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

check This function supports Polyhedral surfaces.

check This function supports Triangles and Triangulated Irregular Network Surfaces (TIN).

Examples

SELECT ST_CoordDim('CIRCULARSTRING(1 2 3, 1 3 4, 5 6 7, 8 9 10, 11 12 13)');
            ---result--
                3

                SELECT ST_CoordDim(ST_Point(1,2));
            --result--
                2

See Also

ST_NDims

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ST_Dimension