Package org.hortonmachine.gears.io.grasslegacy.utils

Class GrassLegacyUtilities

java.lang.Object

org.hortonmachine.gears.io.grasslegacy.utils.GrassLegacyUtilities

public class GrassLegacyUtilities
extends Object

A facade of often used methods by the JGrass engine

Since:

1.1.0

Author:

Andrea Antonello - www.hydrologis.com

Field Summary

Fields

Modifier and Type	Field	Description
static String[]	COLORS

Constructor Summary

Constructors

Constructor	Description
GrassLegacyUtilities()

Method Summary

Modifier and Type	Method	Description
static BufferedImage	ByteBufferImage(byte[] data, int width, int height)	create a buffered image from a set of color triplets
static boolean	checkRasterMapConsistence(String mapsetPath, String mapname)	Returns the list of files involved in the raster map issues.
static int[]	coordinateToNearestRowCol(Window active, org.locationtech.jts.geom.Coordinate coord)	Return the row and column of the active region matrix for a give coordinate *
static int	factorial(int n)
static String[]	filesOfRasterMap(String mapsetPath, String mapname)	Returns the list of files involved in the raster map issues.
static Color	getColor(String clr, Color defclr)
static int[]	getColorTripletByIndex(int index)
static Window	getRectangleAroundPoint(Window activeRegion, double x, double y)	return the rectangle of the cell of the active region, that surrounds the given coordinates
static Window	jgrassRegion2legacyWindow(org.geotools.gce.grassraster.JGrassRegion region)
static int	numberOfAvailableColors()
static void	rasterizePolygonGeometry(Window active, org.locationtech.jts.geom.Geometry polygon, RasterData raster, RasterData rasterToMap, double value, IHMProgressMonitor monitor)	Fill polygon areas mapping on a raster
static boolean	removeGrassRasterMap(String mapsetPath, String mapName)	Given the mapsetpath and the mapname, the map is removed with all its accessor files
static org.locationtech.jts.geom.Envelope	reprojectEnvelopeByEpsg(int srcEpsg, int destEpsg, org.locationtech.jts.geom.Envelope srcEnvelope)
static org.locationtech.jts.geom.Coordinate	rowColToCenterCoordinates(Window active, int row, int col)	Transforms row and column index of the active region into the regarding northing and easting coordinates.
static double[]	rowColToNodeboundCoordinates(Window active, int row, int col)	Transforms row and column index of the active region into an array of the coordinates of the edgaes, i.e.

Methods inherited from class java.lang.Object

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

Field Detail

COLORS

public static final String[] COLORS

Constructor Detail

GrassLegacyUtilities

public GrassLegacyUtilities()

Method Detail

numberOfAvailableColors

public static int numberOfAvailableColors()

getColorTripletByIndex

public static int[] getColorTripletByIndex(int index)

getColor

public static Color getColor(String clr,
                             Color defclr)

checkRasterMapConsistence

public static boolean checkRasterMapConsistence(String mapsetPath,
                                                String mapname)

Returns the list of files involved in the raster map issues. If for example a map has to be deleted, then all these files have to.

Parameters:

mapsetPath - - the path of the mapset

mapname - -the name of the map

Returns:

the array of strings containing the full path to the involved files

ByteBufferImage

public static BufferedImage ByteBufferImage(byte[] data,
                                            int width,
                                            int height)

create a buffered image from a set of color triplets

Parameters:

data -

width -

height -

Returns:

reprojectEnvelopeByEpsg

public static org.locationtech.jts.geom.Envelope reprojectEnvelopeByEpsg(int srcEpsg,
                                                                         int destEpsg,
                                                                         org.locationtech.jts.geom.Envelope srcEnvelope)
                                                                  throws org.opengis.referencing.FactoryException,
                                                                         org.opengis.referencing.operation.TransformException

Throws:

org.opengis.referencing.FactoryException

org.opengis.referencing.operation.TransformException

getRectangleAroundPoint

public static Window getRectangleAroundPoint(Window activeRegion,
                                             double x,
                                             double y)

return the rectangle of the cell of the active region, that surrounds the given coordinates

Parameters:

activeRegion -

x - the given easting coordinate

y - given northing coordinate

Returns:

the rectangle localizing the cell inside which the x and y stay

rowColToCenterCoordinates

public static org.locationtech.jts.geom.Coordinate rowColToCenterCoordinates(Window active,
                                                                             int row,
                                                                             int col)

Transforms row and column index of the active region into the regarding northing and easting coordinates. The center of the cell is taken.

NOTE: basically the inverse of coordinateToNearestRowCol(Window, Coordinate)

Parameters:

active - - the active region (can be null)

row - - row number of the point to transform

col - - column number of the point to transform

Returns:

the point in N/E coordinates of the supplied row and column

coordinateToNearestRowCol

public static int[] coordinateToNearestRowCol(Window active,
                                              org.locationtech.jts.geom.Coordinate coord)

Return the row and column of the active region matrix for a give coordinate *

NOTE: basically the inverse of rowColToCenterCoordinates(Window, int, int)

Parameters:

active - the active region

coord -

Returns:

and int array containing row and col

rasterizePolygonGeometry

public static void rasterizePolygonGeometry(Window active,
                                            org.locationtech.jts.geom.Geometry polygon,
                                            RasterData raster,
                                            RasterData rasterToMap,
                                            double value,
                                            IHMProgressMonitor monitor)

Fill polygon areas mapping on a raster

Parameters:

active - the active region

polygon - the jts polygon geometry

raster - the empty raster data to be filled

rasterToMap - the map from which the values to fill raster are taken (if null, the value parameter is used)

value - the value to set if a second map is not given

monitor -

removeGrassRasterMap

public static boolean removeGrassRasterMap(String mapsetPath,
                                           String mapName)
                                    throws IOException

Given the mapsetpath and the mapname, the map is removed with all its accessor files

Parameters:

mapsetPath -

mapName -

Throws:

IOException

filesOfRasterMap

public static String[] filesOfRasterMap(String mapsetPath,
                                        String mapname)

Returns the list of files involved in the raster map issues. If for example a map has to be deleted, then all these files have to.

Parameters:

mapsetPath - - the path of the mapset

mapname - -the name of the map

Returns:

the array of strings containing the full path to the involved files

rowColToNodeboundCoordinates

public static double[] rowColToNodeboundCoordinates(Window active,
                                                    int row,
                                                    int col)

Transforms row and column index of the active region into an array of the coordinates of the edgaes, i.e. n, s, e, w

Parameters:

active - - the active region (can be null)

row - - row number of the point to transform

col - - column number of the point to transform

Returns:

the array of north, south, east, west

factorial

public static int factorial(int n)

jgrassRegion2legacyWindow

public static Window jgrassRegion2legacyWindow(org.geotools.gce.grassraster.JGrassRegion region)