PostGIS
Description
Overlaps, Touches, Within all imply geometries are not spatially disjoint. If any of the aforementioned returns true, then the geometries are not spatially disjoint. Disjoint implies false for spatial intersection.
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Performed by the GEOS module
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This method
implements the OGC Simple
Features Implementation Specification for SQL 1.1. s2.1.1.2 //s2.1.13.3
- a.Relate(b, 'FF*FF**')
This method
implements the SQL/MM specification. SQL-MM 3: 5.1.26
Examples
SELECT ST_Disjoint('POINT(0 0)'::geometry, 'LINESTRING ( 2 0, 0 2 )'::geometry);
st_disjoint
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t
(1 row)
SELECT ST_Disjoint('POINT(0 0)'::geometry, 'LINESTRING ( 0 0, 0 2 )'::geometry);
st_disjoint
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f
(1 row)