STIsPseudoMultiCurve

STIsPseudoMultiCurve — Checks if supplied @p_geometry is a GeometryCollection object containing only LineString, CircularString and CompoundCurve elements. Function Specification. Description. This function checks if the supplied @p_geometry is a GeometryCollection object containing only LineString, CircularString and CompoundCurve elements. One cannot create a MultiLineString object where an element is a CircularString or CompoundCurve. Any attempt toRead More

STFindPointByMeasure

STFindPointByMeasure — Returns (possibly offset) point geometry at supplied measure along linestring. Function Specification. Description. Given a measure, this function returns a geometry point at that measure. If a non-zero/null value is suppied for @p_offset, the found point is offset (perpendicular to line) to the left (if @p_offset < 0) or to the right (ifRead More

STLocateAlong

STLocateAlong — Returns (possibly offset) point geometry at supplied measure along linestring. Function Specification. Description. This function is identical to STFindPointByName and so is a synonym for it. Given a measure, this function returns a geometry point at that measure. If a non-zero/null value is suppied for @p_offset, the found point is offset (perpendicular toRead More

STLocateBetween

STLocateBetween — Extracts, and possibly offet, linestring using supplied start and end measures and @p_offset value. Function Specification. Description. Given a start and end measure, this function extracts the line segment defined between them (a point if start=end). If a non-zero value is suppied for @p_offset, the extracted line is then offset to the leftRead More

STFindMeasureByPoint

STFindMeasureByPoint — Returns value of the measure dimension of a point on the provided linesting closest to the provided point. Function Specification. Description. Given a point near a the supplied measure @p_linestring, this function returns the measure of the closest point on the measured @p_linestring. Returned measure value is rounded to @p_round_zm decimal digits ofRead More

STFindMeasure

STFindMeasure — Snaps input point to measured linestring returning measure value Function Specification. Description. Given a point near a the supplied measure @p_linestring, this function returns the measure of the closest point on the measured @p_linestring. Returned measure value is rounded to @p_round_zm decimal digits of precision. Notes. Is wrapper over [lrs].[STInterpolatePoint]. Srid of @p_linestringRead More

STInterpolatePoint

STInterpolatePoint — Returns value of the measure dimension of a point on the provided linesting closest to the provided point. Function Specification. Description. This function snaps supplied point to @p_linestring, returning the measure value of the snapped point. Returned measure value is rounded to @p_round_zm decimal digits of precision. Notes. Supports linestrings with CircularString elements.Read More