Name

ST_RelateMatch — Returns true if intersectionMattrixPattern1 implies intersectionMatrixPattern2

Synopsis

boolean ST_RelateMatch(text intersectionMatrix, text intersectionMatrixPattern);

Description

Takes intersectionMatrix and intersectionMatrixPattern and Returns true if the intersectionMatrix satisfies the intersectionMatrixPattern. For more information refer to Section 4.1.3.6, “Dimensionally Extended 9 Intersection Model (DE-9IM)”.

Performed by the GEOS module

Availability: 2.0.0

Examples

SELECT ST_RelateMatch('101202FFF', 'TTTTTTFFF') ;
-- result --
t
--example of common intersection matrix patterns and example matrices
-- comparing relationships of involving one invalid geometry and ( a line and polygon that intersect at interior and boundary)
SELECT mat.name, pat.name, ST_RelateMatch(mat.val, pat.val) As satisfied
    FROM
        ( VALUES ('Equality', 'T1FF1FFF1'),
                ('Overlaps', 'T*T***T**'),
                ('Within', 'T*F**F***'),
                ('Disjoint', 'FF*FF****') As pat(name,val)
        CROSS JOIN
            (	VALUES ('Self intersections (invalid)', '111111111'),
                    ('IE2_BI1_BB0_BE1_EI1_EE2', 'FF2101102'),
                    ('IB1_IE1_BB0_BE0_EI2_EI1_EE2', 'F11F00212')
            ) As mat(name,val);

		

See Also

Section 4.1.3.6, “Dimensionally Extended 9 Intersection Model (DE-9IM)”, ST_Relate