org.h2gis.h2spatialext.function.spatial.distance
Class ST_LocateAlong

java.lang.Object
  org.h2gis.h2spatialapi.AbstractFunction
      org.h2gis.h2spatialapi.DeterministicScalarFunction
          org.h2gis.h2spatialext.function.spatial.distance.ST_LocateAlong

All Implemented Interfaces:

Function, ScalarFunction

public class ST_LocateAlong
extends DeterministicScalarFunction

ST_LocateAlong returns a MULTIPOINT containing points along the line segments of the given geometry matching the specified segment length fraction and offset distance. A positive offset places the point to the left of the segment (with the ordering given by Coordinate traversal); a negative offset to the right. For areal elements, only exterior rings are supported.

Author:

Adam Gouge, Erwan Bocher

Field Summary

Fields inherited from interface org.h2gis.h2spatialapi.ScalarFunction

PROP_DETERMINISTIC, PROP_NOBUFFER

Fields inherited from interface org.h2gis.h2spatialapi.Function

PROP_NAME, PROP_REMARKS

Constructor Summary

ST_LocateAlong()

Method Summary

String	getJavaStaticMethod()
static com.vividsolutions.jts.geom.MultiPoint	locateAlong(com.vividsolutions.jts.geom.Geometry geom, double segmentLengthFraction, double offsetDistance) Returns a MULTIPOINT containing points along the line segments of the given geometry matching the specified segment length fraction and offset distance.

Methods inherited from class org.h2gis.h2spatialapi.AbstractFunction

addProperty, getProperty, removeProperty

Methods inherited from class java.lang.Object

clone, equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait

Methods inherited from interface org.h2gis.h2spatialapi.Function

getProperty

Constructor Detail

ST_LocateAlong

public ST_LocateAlong()

Method Detail

getJavaStaticMethod

public String getJavaStaticMethod()

locateAlong

public static com.vividsolutions.jts.geom.MultiPoint locateAlong(com.vividsolutions.jts.geom.Geometry geom,
                                                                 double segmentLengthFraction,
                                                                 double offsetDistance)

Returns a MULTIPOINT containing points along the line segments of the given geometry matching the specified segment length fraction and offset distance.

Parameters:

geom - Geometry

segmentLengthFraction - Segment length fraction

offsetDistance - Offset distance

Returns:

A MULTIPOINT containing points along the line segments of the given geometry matching the specified segment length fraction and offset distance