H2GIS

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ST_Distance

Signature

DOUBLE ST_Distance(GEOMETRY geomA, GEOMETRY geomB);

Description

Returns the 2-dimensional minimum Cartesian distance between two Geometries in projected units (spatial reference units).

Implements the OpenGIS Simple Features Implementation Specification for SQL version 1.2.1.

Examples

SELECT ST_Distance('POINT(11 4)',
                   'LINESTRING(1 4, 8 4, 3 2, 6 1)');
-- Answer: 3.0

SELECT ST_Distance('LINESTRING(11 4, 9 1)',
                   'LINESTRING(1 4, 8 4, 3 2, 6 1)');
-- Answer: 2.496150883013531

SELECT ST_Distance('LINESTRING(10 7, 11 1)',
                   'POLYGON((1 0, 1 4, 5 4, 5 0, 1 0))');
-- Answer: 5.42516658107679

SELECT ST_Distance('POLYGON((8 0, 8 4, 10 4, 10 0, 8 0))',
                   'POLYGON((1 0, 1 4, 5 4, 5 0, 1 0))');
-- Answer: 3.0

See also