SF FUNCTIONS

FUNCTION

TYPE

DESCRIPTION

STATUS

SYNTAX

VIEW

INTERSECTS

Boolean

Returns TRUE if geom1 intersect with geom2 geometry

Implemented

geof:sfIntersects(?geom1, ?geom2)

WITHIN

Boolean

Returns TRUE if geom1 is completely inside geom2

Implemented

geof:sfWithin(?geom1, ?geom2)

CONTAINS

Boolean

Returns TRUE if and only if no points of geom2 lie in the exterior of geom1, and at least one point of the interior of geom2 lies in the interior of geom1.

Implemented

geof:sfContains(?geom1, ?geom2)

OVERLAPS

Boolean

Returns TRUE if the Geometries share space, are of the same dimension, but are not completely contained by each other.

Implemented

geof:sfOverlaps(?geom1, ?geom2)

TOUCHES

Boolean

Returns TRUE if the geometries have at least one point in common, but their interiors do not intersect.

Implemented

geof:sfTouches(?geom1, ?geom2)

EQUALS

Boolean

Returns TRUE if the given geometries represent the same geometry

Implemented

geof:sfEquals(?geom1, ?geom2)

DISJOINT

Boolean

Returns TRUE if the Geometries do not "spatially intersect" - if they do not share any space together.

Implemented

geof:sfDisjoint(?geom1, ?geom2)

CROSSES

Boolean

Returns TRUE if the supplied geometries have some, but not all, interior points in common.

Implemented

geof:sfCrosses(?geom1, ?geom2)

NON TOPOLOGICAL FUNCTIONS

INTERSECTION

Geometry

Returns a geometry that represents the shared portion of geom1 and geom2.

Implemented

geof:intersection(?geom1, ?geom2)

CONVEXHULL

Geometry

The convex hull of a geometry represents the minimum convex geometry that encloses all geometries within the set.

Implemented

geof:convexHull(?geom1)

BUFFER

Geometry

This function returns a geometric object that represents all Points whose distance from geom1 is less than or equal to the radius measured in units.

Implemented

geof:buffer(?geom1, radius, units:anyUnit)

DISTANCE

Geometry

Returns the shortest distance in units between any two Points in the two geometric objects.

Implemented

geof:distance(?geom1, ?geom2,units:anyUnit)

BOUNDARY

Geometry

This function returns the closure of the boundary of geom1.

Implemented

geof:boundary(?geom1)

DIFFERENCE

Geometry

This function returns a geometric object that represents all Points in the set difference of geom1 with geom2.

Implemented

geof:difference (geom1, geom2)

ENVELOPE

Geometry

This function returns the minimum bounding box of geom1

Implemented

geof:envelope (geom1)

RELATE

Boolean

Returns true if the spatial relationship between geom1 and geom2 corresponds to one with acceptable values for the specified pattern-matrix. Otherwise, this function returns false. Pattern-matrix represents a DE-9IM intersection pattern consisting of T (true) and F (false) values.

Implemented

geof:relate(geom1, geom2, pattern-matrix)

SYM DIFFERENCE

Geometry

This function returns a geometric object that represents all Points in the set symmetric difference of geom1 with geom2.

Implemented

geof:symDifference(geom1, geom2)

UNION

Geometry

This function returns a geometric object that represents all Points in the union of geom1 with geom2.

Implemented

geof:union(geom1, geom2)

getSRID

INT

Returns the spatial reference system URI for geom

Implemented

geof:getSRID (geom)

EH FUNCTIONS

EQUALS

Boolean

Returns TRUE if the given geometries represent the same geometry

Implemented

geof:ehEquals(geom1, geom2)

DISJOINT

Boolean

Returns TRUE if the Geometries do not "spatially intersect" - if they do not share any space together.

Implemented

geof:ehDisjoint(geom1, geom2)

MEET

Boolean

Returns TRUE if the geometries have at least one point in common, but their interiors do not intersect.

Implemented

geof:ehMeet(geom1, geom2)

OVERLAP

Boolean

Returns TRUE if the Geometries share space, are of the same dimension, but are not completely contained by each other.

Implemented

geof:ehOverlap(geom1, geom2)

COVERS

Boolean

Exists if the subject spatialObject spatially covers the object spatialObject. DE-9IM: T*TFT*FF*.

Implemented

geof:ehCovers(geom1, geom2)

COVERED BY

Boolean

Exists if the subject spatialObject is spatially covered by the object spatialObject. DE-9IM: TFF*TFT**.

Implemented

geof:ehCoveredBy(geom1, geom2)

INSIDE

Boolean

Exists if the subject spatialObject is spatially inside the object spatialObject. DE-9IM: TFF*FFT**.

Implemented

geof:ehInside(geom1, geom2)

CONTAINS

Boolean

Exists if the subject spatialObject spatially contains the object spatialObject. DE-9IM: T*TFF*FF*.

Implemented

geof:ehContains(geom1, geom2)

RCC FUNCTIONS

EQUALS

Boolean

Returns TRUE if the given geometries represent the same geometry

Implemented

geof:rcc8eq(geom1, geom2)

DISCONNECTED

Boolean

Returns TRUE if the Geometries do not "spatially intersect" - if they do not share any space together.

Implemented

geof:rcc8dc(geom1, geom2)

EXTERNALLY CONNECTED

Boolean

Returns TRUE if the geometries have at least one point in common, but their interiors do not intersect.

Implemented

geof:rcc8ec(geom1, geom2)

PARTIALLY OVERLAPPING

Boolean

Returns TRUE if the Geometries share space, are of the same dimension, but are not completely contained by each other.

Implemented

geof:rcc8po(geom1, geom2)

TANGENTIAL PROPER PART

Boolean

Returns true if geom1 is within geom2 and their borders touches in almost one point

Implemented

geof:rcc8tpp(geom1, geom2)

TANGENTIAL PROPER PART INVERSE

Boolean

Returns true if geom1 contains geom2 and their borders touches in almost one point

Implemented

geof:rcc8tppi(geom1, geom2)

NON- TANGENTIAL PROPER PART

Boolean

Returns true if geom 1 is within geom 2 and their borders doesn't touches in almost one point

Implemented

geof:rcc8ntpp(geom1, geom2)

NON- TANGENTIAL PROPER PART INVERSE

Boolean

Returns true if geom1 contains geom2 and their borders doesn't touch in any point

Implemented

geof:rcc8ntppi(geom1, geom2)