x ST_Dimension Return the dimension of the ST_Geometry
value.
x ST_Boundary(geometry) Returns the closure of the combinatorial
boundary of this Geometry. The combinatorial boundary is defined as
described in section 3.12.3.2 of the OGC SPEC. Because the result
of this function is a closure, and hence topologically closed, the
resulting boundary can be represented using representational
geometry primitives as discussed in the OGC SPEC, section
3.12.2.
#x ST_Simplify(geometry, tolerance)
#x ST_SimplifyPreserveTopology(geometry, tolerance) Returns a
"simplified" version of the given geometry using the Douglas-Peuker
algorithm. Will avoid creating derived geometries (polygons in
particular) that are invalid.
#x ST_IsClosed(geometry) #x ST_Intersection #x
SE_EnvelopesIntersect
#x SE_LocateAlong #x SE_LocateBetween
#x ST_line_interpolate_point(linestring, location) #x
ST_line_substring(linestring, start, end)
#x ST_line_locate_point(LineString, Point) Returns a float
between 0 and 1 representing the location of the closest point on
LineString to the given Point, as a fraction of total 2d line
length.
#x ST_locate_along_measure(geometry, float8) Return a derived
geometry collection value with elements that match the specified
measure. Polygonal elements are not supported.
#x ST_locate_between_measures(geometry, float8, float8) #
#x ST_Polygonize(geometry set) #x ST_SnapToGrid(geometry,
geometry, sizeX, sizeY, sizeZ, sizeM)
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