Package org.h2gis.functions.spatial.create

Class ST_GeneratePointsInGrid

java.lang.Object

org.h2gis.api.AbstractFunction

org.h2gis.api.DeterministicScalarFunction

org.h2gis.functions.spatial.create.ST_GeneratePointsInGrid

All Implemented Interfaces:

org.h2gis.api.Function, org.h2gis.api.ScalarFunction

public class ST_GeneratePointsInGrid
extends org.h2gis.api.DeterministicScalarFunction

This function is used to generate pseudo-random points until the requested number are found within the input area (polygon or multipolygon)

Author:

Erwan Bocher, CNRS

Field Summary

Fields inherited from interface org.h2gis.api.Function

PROP_NAME, PROP_REMARKS

Fields inherited from interface org.h2gis.api.ScalarFunction

PROP_DETERMINISTIC

Constructor Summary

Constructors

Constructor	Description
ST_GeneratePointsInGrid()

Method Summary

Modifier and Type	Method	Description
static org.locationtech.jts.geom.Geometry	generatePointsInGrid(org.locationtech.jts.geom.Geometry geom, int cellSizeX, int cellSizeY)
static org.locationtech.jts.geom.Geometry	generatePointsInGrid(org.locationtech.jts.geom.Geometry geom, int cellSizeX, int cellSizeY, boolean useMask)	Make a regular distribution of points
String	getJavaStaticMethod()

Methods inherited from class org.h2gis.api.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.api.Function

getProperty

Constructor Detail

ST_GeneratePointsInGrid

public ST_GeneratePointsInGrid()

Method Detail

getJavaStaticMethod

public String getJavaStaticMethod()

generatePointsInGrid

public static org.locationtech.jts.geom.Geometry generatePointsInGrid(org.locationtech.jts.geom.Geometry geom,
                                                                      int cellSizeX,
                                                                      int cellSizeY)
                                                               throws SQLException

Throws:

SQLException

generatePointsInGrid

public static org.locationtech.jts.geom.Geometry generatePointsInGrid(org.locationtech.jts.geom.Geometry geom,
                                                                      int cellSizeX,
                                                                      int cellSizeY,
                                                                      boolean useMask)
                                                               throws SQLException

Make a regular distribution of points

Parameters:

geom - input geometry as polygon or multipolygon

cellSizeX - size of the x cell

cellSizeY - size of the y cell

useMask - set to true to keep the points loacted inside the input geometry

Returns:

a regular distribution of points as multipoint

Throws:

SQLException