svn-gvsig-desktop / trunk / libraries / libRaster / src / org / gvsig / raster / grid / Grid.java @ 11719
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/* gvSIG. Sistema de Informaci?n Geogr?fica de la Generalitat Valenciana
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*
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* Copyright (C) 2006 IVER T.I. and Generalitat Valenciana.
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*
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* This program is free software; you can redistribute it and/or
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* modify it under the terms of the GNU General Public License
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* as published by the Free Software Foundation; either version 2
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* of the License, or (at your option) any later version.
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*
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* This program is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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* GNU General Public License for more details.
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*
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* You should have received a copy of the GNU General Public License
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* along with this program; if not, write to the Free Software
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* Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307,USA.
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*/
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package org.gvsig.raster.grid; |
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import java.awt.image.DataBuffer; |
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import java.io.IOException; |
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import java.util.Arrays; |
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import org.gvsig.raster.buffer.BufferFactory; |
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import org.gvsig.raster.buffer.RasterBuffer; |
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import org.gvsig.raster.buffer.RasterBufferInvalidAccessException; |
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import org.gvsig.raster.buffer.RasterBufferInvalidException; |
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import org.gvsig.raster.dataset.IBuffer; |
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import org.gvsig.raster.dataset.MultiRasterDataset; |
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import org.gvsig.raster.dataset.properties.DatasetListTransparency; |
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import org.gvsig.raster.grid.filter.RasterFilterList; |
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/**
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* Clase que representa una rejilla de datos raster. Este tipo de grid tiene el interfaz necesario
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* de acceso a la informaci?n raster para aplicaciones de analisis raster. Contiene m?todos de acceso al
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* dato tanto en lectura como en escritura y encapsula operaciones entre grids. Adem?s contiene
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* objetos que contienen las caracter?sticas asociadas a ese grid. Sobre un grid pueden
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* aplicarse tambi?n operaciones de filtrado.
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*
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* Podemos crear un Grid de cinco formas distitas:
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* <UL>
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* <LI>A partir de una fuente de datos (cargada en el constructor). Se har? una petici?n del extent pasado por par?metro con las bandas seleccionadas por par?metro.</LI>
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* <LI>A partir de un extensi?n de capa, una extensi?n de vista, un tipo de dato y un n?mero de datos
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* crea un Grid vacio util para escritura.</LI>
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* <LI>A partir de una fuente de datos (cargados). Datasource se usa como buffer de datos cargados y se selecciona si queremos el reader interpolado.</LI>
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* <LI>A partir de una fuente de datos (cargada en el constructor). Se har? una petici?n del extent completo de la fuente con las bandas seleccionadas por par?metro.</LI>
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* <LI>A partir de una fuente de datos (cargada en el constructor). Se har? una petici?n del extent completo de la fuente con todas las bandas disponibles.</LI>
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* </UL>
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*
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* @author Victor Olaya (volaya@ya.com)
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* @author Nacho Brodin (nachobrodin@gmail.com)
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*/
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public class Grid implements IQueryableGrid, IWritableGrid{ |
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//TODO: ARQUITECTURA: Estos tipos de datos no deben ser necesarios. Existiendo IBuffer se tendr?an que usar esos Hay que convertir, antes de eliminarlos, el uso de estos a los de IBuffer
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public static final int RASTER_DATA_TYPE_FLOAT = DataBuffer.TYPE_FLOAT; |
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public static final int RASTER_DATA_TYPE_DOUBLE = DataBuffer.TYPE_DOUBLE; |
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public static final int RASTER_DATA_TYPE_INT = DataBuffer.TYPE_INT; |
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public static final int RASTER_DATA_TYPE_SHORT = DataBuffer.TYPE_SHORT; |
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public static final int RASTER_DATA_TYPE_BYTE = DataBuffer.TYPE_BYTE; |
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public final static double DEG_45_IN_RAD = Math.PI / 180. * 45.; |
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public final static double DEG_90_IN_RAD = Math.PI / 180. * 90.; |
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public final static double DEG_180_IN_RAD = Math.PI ; |
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public final static double DEG_270_IN_RAD = Math.PI / 180. * 270.; |
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public final static double DEG_360_IN_RAD = Math.PI * 2.; |
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/* neighbor's address*/ /* N NE E SE S SW W NW */ |
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private final static int m_iOffsetX []= { 0, 1, 1, 1, 0, -1, -1, -1}; |
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private final static int m_iOffsetY []= { 1, 1, 0, -1, -1, -1, 0, 1}; |
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private double m_dDist[]; |
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public double _2DX, _6DX, _DX_2, _4DX_2; |
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private int[] bands = null; |
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private int dataType = IBuffer.TYPE_UNDEFINED; |
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private RasterBuffer rasterBuf = null; |
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private GridReader reader = null; |
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private GridWriter writer = null; |
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private GridExtent windowExtent = null; |
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private GridExtent layerExtent = null; |
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private GridStatistic statistic = null; |
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private GridTransparency transparency = null; |
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private GridPalette[] palette = null; |
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private RasterFilterList filterList = null; |
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/**
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* Crea un grid a partir de un MultiRasterDataset. Usa el extent de la fuente de datos como
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* extent completo y el extent pasado como par?metro como extensi?n de ventana.
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*
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* Cuando se construye el reader se carga el buffer con la extensi?n definida en windowExtent
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* y las bandas especificadas en bands.
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*
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* @param MultiRasterDataset datasets que proporcionan los datos
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* @param bands n?mero de bandas requeridas
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* @param windowExtent Extensi?n de la ventana. Si este par?metro es null se usar? el
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* mismo que el de la capa.
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*/
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public Grid(MultiRasterDataset datasets, int[] bands, GridExtent windowExtent) |
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throws RasterBufferInvalidException{
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BufferFactory bFactory = new BufferFactory(datasets);
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layerExtent = new GridExtent(bFactory.getExtent(), bFactory.getXCellSize());
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dataType = bFactory.getDataType(); |
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this.bands = bands;
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if(windowExtent == null) |
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this.windowExtent = layerExtent;
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else
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this.windowExtent = windowExtent;
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rasterBuf = (RasterBuffer)bFactory.getRasterBuf(); |
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if (windowExtent.fitsIn(layerExtent))
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reader = new GridNotInterpolated(bFactory, layerExtent, windowExtent, bands);
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else
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reader = new GridInterpolated(bFactory, layerExtent, windowExtent, bands);
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writer = new GridWriter(layerExtent, dataType, rasterBuf);
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init(bFactory); |
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} |
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/**
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* Crea un grid vacio a partir de un extent y un tipo de datos. Se crea un buffer vacio en el
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* que puede escribirse a trav?s del writer. Los datos escritos pueden ser consultados con el
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* reader. No tiene una fuente de datos asociada ya que es un grid vacio basicamente para
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* escritura.
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* @param layerExtent Tama?o completo de la capa
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* @param windowExtent Ventana de datos.
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* @param dataType Tipo de datos del buffer
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* @param bands n?mero de bandas requeridas y orden de dibujado en el buffer
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*/
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public Grid(GridExtent layerExtent,
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GridExtent windowExtent, |
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int dataType,
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int[] bands) throws RasterBufferInvalidException{ |
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this.windowExtent = windowExtent;
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this.layerExtent = layerExtent;
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this.dataType = dataType;
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rasterBuf = RasterBuffer.getBuffer(dataType, layerExtent.getNX(), layerExtent.getNY(), bands.length, true);
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if (windowExtent.fitsIn(layerExtent))
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reader = new GridNotInterpolated(rasterBuf, layerExtent, windowExtent, bands);
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else
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reader = new GridInterpolated(rasterBuf, layerExtent, windowExtent, bands);
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writer = new GridWriter(layerExtent, dataType, rasterBuf);
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init(null);
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} |
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/**
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* Crea un grid a partir de un BufferFactory. El buffer debe estar cargado de datos y el extent
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* de este viene definido en el par?metro windowExtent.
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* @param dataSource Fuente de datos
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* @param windowExtent Extent de los datos cargados en dataSource
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* @param notInterp Si es true fuerza a que el reader sea sin interpolaci?n. Si es false decide si
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* el reader es interpolado o no a partir de los extents de capa y la ventana seleccionada.
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*/
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public Grid(BufferFactory dataSource, boolean notInterp) { |
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this.layerExtent = new GridExtent(dataSource.getExtent(), dataSource.getXCellSize()); |
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dataType = dataSource.getDataType(); |
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bands = dataSource.getDrawableBands(); |
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this.windowExtent = new GridExtent(dataSource.getDataExtent(), dataSource.getXCellSize()); |
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rasterBuf = (RasterBuffer)dataSource.getRasterBuf(); |
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if(notInterp) {
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reader = new GridNotInterpolated(rasterBuf, layerExtent, windowExtent, bands);
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} else {
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if (windowExtent.fitsIn(layerExtent))
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reader = new GridNotInterpolated(rasterBuf, layerExtent, windowExtent, bands);
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else
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reader = new GridInterpolated(rasterBuf, layerExtent, windowExtent, bands);
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} |
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writer = new GridWriter(layerExtent, dataType, rasterBuf);
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init(dataSource); |
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} |
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/**
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* Crea un grid a partir de un BufferFactory. Se har? una petici?n del extent completo de la fuente.
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* dataSource tiene asociada una fuente de datos pero se ignorar? si tiene el buffer lleno. La instanciaci?n
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* de GridNotInterpolated har? que se haga la petici?n para cargar raster completo.
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* @param dataSource Fuente de datos
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* @param bands n?mero de bandas requeridas y orden de dibujado en el buffer
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*/
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public Grid(BufferFactory dataSource, int[] bands) |
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throws RasterBufferInvalidException{
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//La petici?n es del raster completo
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windowExtent = layerExtent = new GridExtent(dataSource.getExtent(), dataSource.getXCellSize());
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dataType = dataSource.getDataType(); |
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this.bands = bands;
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reader = new GridNotInterpolated(dataSource, layerExtent, windowExtent, bands);
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rasterBuf = (RasterBuffer)dataSource.getRasterBuf(); |
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writer = new GridWriter(windowExtent, dataType, rasterBuf);
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init(dataSource); |
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} |
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/**
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* Crea un grid a partir de un BufferFactory. Se har? una petici?n del extent completo de la fuente.
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* dataSource tiene asociada una fuente de datos pero se ignorar? si tiene el buffer lleno. La instanciaci?n
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* de GridNotInterpolated har? que se haga la petici?n para cargar raster completo. El buffer se cargar?
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* con todas las bandas disponibles.
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* @param dataSource Fuente de datos
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*/
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public Grid(BufferFactory dataSource) throws RasterBufferInvalidException { |
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//La petici?n es del raster completo
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windowExtent = layerExtent = new GridExtent(dataSource.getExtent(), dataSource.getXCellSize());
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dataType = dataSource.getDataType(); |
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bands = new int[dataSource.getBandCount()]; |
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for(int i = 0; i < dataSource.getBandCount(); i ++) |
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bands[i] = i; |
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reader = new GridNotInterpolated(dataSource, layerExtent, windowExtent, bands);
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rasterBuf = (RasterBuffer)dataSource.getRasterBuf(); |
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writer = new GridWriter(windowExtent, dataType, rasterBuf);
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init(dataSource); |
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} |
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/**
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* Selecciona la forma de obtener datos con o sin interpolaci?n. Si pasamos el par?metro
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* false al aplicar un m?todo de consulta de datos este ser? aplicado sin interpolaci?n.
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* @param interpolation
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*/
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public void switchToInterpolationMethod(boolean interpolation){ |
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//GridExtent layer = new GridExtent(0, 0, rasterBuf.getWidth(), rasterBuf.getHeight(), 1);
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if(interpolation)
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reader = new GridInterpolated(rasterBuf, layerExtent, windowExtent, bands);
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else
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reader = new GridNotInterpolated(rasterBuf, layerExtent, windowExtent, bands);
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init(null);
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} |
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/**
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* Inicializaci?n de constantes
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*/
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private void init(BufferFactory ds){ |
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int i;
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double dCellSize = getCellSize();
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statistic = new GridStatistic(this); |
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if(ds == null) |
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transparency = new GridTransparency();
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else{
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DatasetListTransparency transp = ds.getMultiRasterDataset().getTransparencyFilesStatus(); |
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if(transp != null) |
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transparency = new GridTransparency(transp);
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this.palette = new GridPalette[ds.getPalettes().length]; |
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for(int iPal = 0; iPal < ds.getPalettes().length; iPal++){ |
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if(ds.getPalettes()[iPal] != null) |
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this.palette[iPal] = new GridPalette(ds.getPalettes()[iPal]); |
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} |
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} |
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filterList = new RasterFilterList();
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filterList.addParam("IStatistics", ds.getMultiRasterDataset().getStatistics());
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filterList.addParam("MultiRasterDataset", ds.getMultiRasterDataset());
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filterList.setInitRasterBuf(rasterBuf); |
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m_dDist = new double[8]; |
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for (i = 0; i < 8; i++){ |
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m_dDist[i] = Math.sqrt ( m_iOffsetX[i] * dCellSize * m_iOffsetX[i] * dCellSize
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+ m_iOffsetY[i] * dCellSize * m_iOffsetY[i] * dCellSize ); |
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} |
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_2DX = dCellSize * 2.0;
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_6DX = dCellSize * 6.0;
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_DX_2 = dCellSize * dCellSize; |
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_4DX_2 = 4.0 * _DX_2;
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} |
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//************* Write Services *********************
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/*
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* (non-Javadoc)
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* @see org.gvsig.fmap.grid.IWritableGrid#assign(byte)
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*/
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public void assign(byte value)throws RasterBufferInvalidAccessException{ |
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writer.assign(value); |
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} |
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/*
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* (non-Javadoc)
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* @see org.gvsig.fmap.grid.IWritableGrid#assign(short)
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*/
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public void assign(short value)throws RasterBufferInvalidAccessException{ |
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writer.assign(value); |
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} |
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/*
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* (non-Javadoc)
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* @see org.gvsig.fmap.grid.IWritableGrid#assign(int)
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*/
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public void assign(int value)throws RasterBufferInvalidAccessException{ |
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writer.assign(value); |
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} |
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/*
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* (non-Javadoc)
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* @see org.gvsig.fmap.grid.IWritableGrid#assign(float)
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*/
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public void assign(float value)throws RasterBufferInvalidAccessException{ |
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writer.assign(value); |
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} |
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/*
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* (non-Javadoc)
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* @see org.gvsig.fmap.grid.IWritableGrid#assign(double)
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*/
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public void assign(double value)throws RasterBufferInvalidAccessException{ |
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writer.assign(value); |
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} |
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/*
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* (non-Javadoc)
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* @see org.gvsig.fmap.grid.IWritableGrid#assign(org.gvsig.fmap.dataaccess.BufferFactory)
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*/
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public void assign(BufferFactory dataSource)throws RasterBufferInvalidException, OutOfGridException{ |
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Grid window = new Grid(dataSource.getMultiRasterDataset(), bands, windowExtent);
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write(window); |
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writer.setNoDataValue(window.getNoDataValue()); |
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} |
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/*
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* (non-Javadoc)
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* @see org.gvsig.fmap.grid.IWritableGrid#assign(org.gvsig.fmap.grid.Grid)
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*/
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public void assign(Grid driver)throws OutOfGridException{ |
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if (driver.getGridExtent().equals(layerExtent)){
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write(driver); |
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writer.setNoDataValue(driver.getNoDataValue()); |
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} |
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} |
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/**
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* Sobreescribe los datos del grid actual con los datos del grid pasado por par?metro
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* @param g Grid desde donde se obtienen los datos
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*/
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private void write(Grid g)throws OutOfGridException{ |
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try{
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switch(rasterBuf.getDataType()){
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case IBuffer.TYPE_BYTE: for (int x = 0; x < g.getNX(); x++){ |
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for (int y = 0; y < g.getNY(); y++){ |
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writer.setCellValue(x, y, g.getCellValueAsByte(x, y)); |
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} |
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} |
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break;
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case IBuffer.TYPE_SHORT:for (int x = 0; x < g.getNX(); x++){ |
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for (int y = 0; y < g.getNY(); y++){ |
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writer.setCellValue(x, y, g.getCellValueAsShort(x, y)); |
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} |
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} |
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break;
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case IBuffer.TYPE_INT: for (int x = 0; x < g.getNX(); x++){ |
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for (int y = 0; y < g.getNY(); y++){ |
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writer.setCellValue(x, y, g.getCellValueAsInt(x, y)); |
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} |
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} |
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break;
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case IBuffer.TYPE_FLOAT:for (int x = 0; x < g.getNX(); x++){ |
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for (int y = 0; y < g.getNY(); y++){ |
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writer.setCellValue(x, y, g.getCellValueAsFloat(x, y)); |
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} |
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} |
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break;
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case IBuffer.TYPE_DOUBLE:for (int x = 0; x < g.getNX(); x++){ |
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for (int y = 0; y < g.getNY(); y++){ |
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writer.setCellValue(x, y, g.getCellValueAsDouble(x, y)); |
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} |
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} |
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break;
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} |
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} catch (OutOfGridException e) {
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//No es probable que se salga fuera ya que el bucle se controla dentro de la misma funci?n
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//No hacemos nada para manejar la excepci?n
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e.printStackTrace(); |
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} catch (RasterBufferInvalidAccessException e1) {
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//No es probable que se salga fuera ya que el bucle se controla dentro de la misma funci?n
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//No hacemos nada para manejar la excepci?n
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e1.printStackTrace(); |
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} |
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} |
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/*
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* (non-Javadoc)
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* @see org.gvsig.fmap.grid.IWritableGrid#assignNoData()
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*/
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public void assignNoData(){ |
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try {
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switch(rasterBuf.getDataType()){
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case IBuffer.TYPE_BYTE: writer.assign((byte)rasterBuf.getNoDataValue());break; |
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case IBuffer.TYPE_SHORT: writer.assign((short)rasterBuf.getNoDataValue());break; |
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case IBuffer.TYPE_INT: writer.assign((int)rasterBuf.getNoDataValue());break; |
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case IBuffer.TYPE_FLOAT: writer.assign((float)rasterBuf.getNoDataValue());break; |
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case IBuffer.TYPE_DOUBLE: writer.assign((double)rasterBuf.getNoDataValue());break; |
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} |
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} catch (RasterBufferInvalidAccessException e) {
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//No hacemos nada. El tipo de dato al que se accede no es controlado por el usuario por lo
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//que no le mandamos la excepci?n hacia arriba.
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e.printStackTrace(); |
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} |
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} |
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/*
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* (non-Javadoc)
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* @see org.gvsig.fmap.grid.IWritableGrid#setCellValue(int, int, byte)
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*/
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public void setCellValue(int x, int y, byte value)throws OutOfGridException{ |
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writer.setCellValue(x, y, value); |
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} |
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/*
|
419 |
* (non-Javadoc)
|
420 |
* @see org.gvsig.fmap.grid.IWritableGrid#setCellValue(int, int, short)
|
421 |
*/
|
422 |
public void setCellValue(int x, int y, short value)throws OutOfGridException{ |
423 |
writer.setCellValue(x, y, value); |
424 |
} |
425 |
|
426 |
/*
|
427 |
* (non-Javadoc)
|
428 |
* @see org.gvsig.fmap.grid.IWritableGrid#setCellValue(int, int, int)
|
429 |
*/
|
430 |
public void setCellValue(int x, int y, int value)throws OutOfGridException{ |
431 |
writer.setCellValue(x, y, value); |
432 |
} |
433 |
|
434 |
/*
|
435 |
* (non-Javadoc)
|
436 |
* @see org.gvsig.fmap.grid.IWritableGrid#setCellValue(int, int, float)
|
437 |
*/
|
438 |
public void setCellValue(int x, int y, float value)throws OutOfGridException{ |
439 |
writer.setCellValue(x, y, value); |
440 |
} |
441 |
|
442 |
/*
|
443 |
* (non-Javadoc)
|
444 |
* @see org.gvsig.fmap.grid.IWritableGrid#setCellValue(int, int, double)
|
445 |
*/
|
446 |
public void setCellValue(int x, int y, double value)throws OutOfGridException{ |
447 |
writer.setCellValue(x, y, value); |
448 |
} |
449 |
|
450 |
/*
|
451 |
* (non-Javadoc)
|
452 |
* @see org.gvsig.fmap.grid.IWritableGrid#add(org.gvsig.fmap.grid.Grid)
|
453 |
*/
|
454 |
public void add(Grid g){ |
455 |
if (g.getGridExtent().equals(getGridExtent())){
|
456 |
boolean interp = (reader instanceof GridInterpolated); |
457 |
switchToInterpolationMethod(false);
|
458 |
try{
|
459 |
switch(rasterBuf.getDataType()){
|
460 |
case IBuffer.TYPE_BYTE: for (int x = 0; x < g.getNX(); x++){ |
461 |
for (int y = 0; y < g.getNY(); y++){ |
462 |
writer.setCellValue(x, y, reader.getCellValueAsByte(x, y) + g.getCellValueAsByte(x,y)); |
463 |
} |
464 |
} |
465 |
break;
|
466 |
case IBuffer.TYPE_SHORT:for (int x = 0; x < g.getNX(); x++){ |
467 |
for (int y = 0; y < g.getNY(); y++){ |
468 |
writer.setCellValue(x, y, reader.getCellValueAsShort(x, y) + g.getCellValueAsShort(x,y)); |
469 |
} |
470 |
} |
471 |
break;
|
472 |
case IBuffer.TYPE_INT: for (int x = 0; x < g.getNX(); x++){ |
473 |
for (int y = 0; y < g.getNY(); y++){ |
474 |
writer.setCellValue(x, y, reader.getCellValueAsInt(x, y) + g.getCellValueAsInt(x,y)); |
475 |
} |
476 |
} |
477 |
break;
|
478 |
case IBuffer.TYPE_FLOAT:for (int x = 0; x < g.getNX(); x++){ |
479 |
for (int y = 0; y < g.getNY(); y++){ |
480 |
writer.setCellValue(x, y, reader.getCellValueAsFloat(x, y) + g.getCellValueAsFloat(x,y)); |
481 |
} |
482 |
} |
483 |
break;
|
484 |
case IBuffer.TYPE_DOUBLE:for (int x = 0; x < g.getNX(); x++){ |
485 |
for (int y = 0; y < g.getNY(); y++){ |
486 |
writer.setCellValue(x, y, reader.getCellValueAsDouble(x, y) + g.getCellValueAsDouble(x,y)); |
487 |
} |
488 |
} |
489 |
break;
|
490 |
} |
491 |
} catch (OutOfGridException e) {
|
492 |
//No es probable que se salga fuera ya que el bucle se controla dentro de la misma funci?n
|
493 |
//No hacemos nada para manejar la excepci?n
|
494 |
e.printStackTrace(); |
495 |
} catch (RasterBufferInvalidAccessException e1) {
|
496 |
//No es probable que se salga fuera ya que el bucle se controla dentro de la misma funci?n
|
497 |
//No hacemos nada para manejar la excepci?n
|
498 |
e1.printStackTrace(); |
499 |
} |
500 |
//Restauramos el reader que hab?a
|
501 |
switchToInterpolationMethod(interp); |
502 |
} |
503 |
} |
504 |
|
505 |
/*
|
506 |
* (non-Javadoc)
|
507 |
* @see org.gvsig.fmap.grid.IWritableGrid#addToCellValue(int, int, byte)
|
508 |
*/
|
509 |
public void addToCellValue(int x, int y, byte value) |
510 |
throws OutOfGridException, RasterBufferInvalidAccessException{
|
511 |
writer.setCellValue(x, y, (byte)(reader.getCellValueAsByte(x, y) + value));
|
512 |
} |
513 |
|
514 |
/*
|
515 |
* (non-Javadoc)
|
516 |
* @see org.gvsig.fmap.grid.IWritableGrid#addToCellValue(int, int, short)
|
517 |
*/
|
518 |
public void addToCellValue(int x, int y, short value) |
519 |
throws OutOfGridException, RasterBufferInvalidAccessException{
|
520 |
writer.setCellValue(x, y, (short)(reader.getCellValueAsShort(x, y) + value));
|
521 |
} |
522 |
|
523 |
/*
|
524 |
* (non-Javadoc)
|
525 |
* @see org.gvsig.fmap.grid.IWritableGrid#addToCellValue(int, int, int)
|
526 |
*/
|
527 |
public void addToCellValue(int x, int y, int value) |
528 |
throws OutOfGridException, RasterBufferInvalidAccessException{
|
529 |
writer.setCellValue(x, y, (int)(reader.getCellValueAsInt(x, y) + value));
|
530 |
} |
531 |
|
532 |
/*
|
533 |
* (non-Javadoc)
|
534 |
* @see org.gvsig.fmap.grid.IWritableGrid#addToCellValue(int, int, float)
|
535 |
*/
|
536 |
public void addToCellValue(int x, int y, float value) |
537 |
throws OutOfGridException, RasterBufferInvalidAccessException{
|
538 |
writer.setCellValue(x, y, (float)(reader.getCellValueAsFloat(x, y) + value));
|
539 |
} |
540 |
|
541 |
/*
|
542 |
* (non-Javadoc)
|
543 |
* @see org.gvsig.fmap.grid.IWritableGrid#addToCellValue(int, int, double)
|
544 |
*/
|
545 |
public void addToCellValue(int x, int y, double value) |
546 |
throws OutOfGridException, RasterBufferInvalidAccessException{
|
547 |
writer.setCellValue(x, y, (double)(reader.getCellValueAsDouble(x, y) + value));
|
548 |
} |
549 |
|
550 |
/*
|
551 |
* (non-Javadoc)
|
552 |
* @see org.gvsig.fmap.grid.IWritableGrid#multiply(double)
|
553 |
*/
|
554 |
public void multiply(double value){ |
555 |
boolean interp = (reader instanceof GridInterpolated); |
556 |
switchToInterpolationMethod(false);
|
557 |
try{
|
558 |
switch(rasterBuf.getDataType()){
|
559 |
case IBuffer.TYPE_BYTE: for (int x = 0; x < getNX(); x++){ |
560 |
for (int y = 0; y < getNY(); y++) |
561 |
writer.setCellValue(x, y, (byte)(reader.getCellValueAsByte(x, y) * value));
|
562 |
} |
563 |
break;
|
564 |
case IBuffer.TYPE_SHORT:for (int x = 0; x < getNX(); x++){ |
565 |
for (int y = 0; y < getNY(); y++) |
566 |
writer.setCellValue(x, y, (short)(reader.getCellValueAsShort(x, y) * value));
|
567 |
} |
568 |
break;
|
569 |
case IBuffer.TYPE_INT: for (int x = 0; x < getNX(); x++){ |
570 |
for (int y = 0; y < getNY(); y++) |
571 |
writer.setCellValue(x, y, (int)(reader.getCellValueAsInt(x, y) * value));
|
572 |
} |
573 |
break;
|
574 |
case IBuffer.TYPE_FLOAT:for (int x = 0; x < getNX(); x++){ |
575 |
for (int y = 0; y < getNY(); y++) |
576 |
writer.setCellValue(x, y, (float)(reader.getCellValueAsFloat(x, y) * value));
|
577 |
} |
578 |
break;
|
579 |
case IBuffer.TYPE_DOUBLE:for (int x = 0; x < getNX(); x++){ |
580 |
for (int y = 0; y < getNY(); y++) |
581 |
writer.setCellValue(x, y, (double)(reader.getCellValueAsDouble(x, y) * value));
|
582 |
} |
583 |
break;
|
584 |
} |
585 |
} catch (OutOfGridException e) {
|
586 |
//No es probable que se salga fuera ya que el bucle se controla dentro de la misma funci?n
|
587 |
//No hacemos nada para manejar la excepci?n
|
588 |
e.printStackTrace(); |
589 |
} catch (RasterBufferInvalidAccessException e1) {
|
590 |
//No es probable que se salga fuera ya que el bucle se controla dentro de la misma funci?n
|
591 |
//No hacemos nada para manejar la excepci?n
|
592 |
e1.printStackTrace(); |
593 |
} |
594 |
//Restauramos el reader que hab?a
|
595 |
switchToInterpolationMethod(interp); |
596 |
} |
597 |
|
598 |
/*
|
599 |
* (non-Javadoc)
|
600 |
* @see org.gvsig.fmap.grid.IWritableGrid#setNoDataValue(double)
|
601 |
*/
|
602 |
public void setNoDataValue(double dNoDataValue){ |
603 |
writer.setNoDataValue((float) dNoDataValue);
|
604 |
} |
605 |
|
606 |
/*
|
607 |
* (non-Javadoc)
|
608 |
* @see org.gvsig.fmap.grid.IWritableGrid#setNoData(int, int)
|
609 |
*/
|
610 |
public void setNoData(int x, int y){ |
611 |
writer.setNoData(x,y); |
612 |
} |
613 |
|
614 |
public void ExportToArcViewASCIIFile(String sFilename){ |
615 |
try {
|
616 |
writer.ExportToArcViewASCIIFile(sFilename); |
617 |
} catch (NumberFormatException e) { |
618 |
e.printStackTrace(); |
619 |
} catch (IOException e) { |
620 |
e.printStackTrace(); |
621 |
} |
622 |
} |
623 |
|
624 |
//************* Query Services *********************
|
625 |
|
626 |
/*
|
627 |
* (non-Javadoc)
|
628 |
* @see org.gvsig.fmap.grid.IQueryableGrid#isNoDataValue(double)
|
629 |
*/
|
630 |
public boolean isNoDataValue(double noDataValue){ |
631 |
return (reader.getNoDataValue() == noDataValue);
|
632 |
} |
633 |
|
634 |
/*
|
635 |
* (non-Javadoc)
|
636 |
* @see org.gvsig.fmap.grid.IQueryableGrid#isInGrid(int, int)
|
637 |
*/
|
638 |
public boolean isInGrid(int x, int y){ |
639 |
return reader.isCellInGrid(x, y);
|
640 |
} |
641 |
|
642 |
/*
|
643 |
* (non-Javadoc)
|
644 |
* @see org.gvsig.fmap.grid.IQueryableGrid#getCellSize()
|
645 |
*/
|
646 |
public double getCellSize() { |
647 |
return reader.getCellSize();
|
648 |
} |
649 |
|
650 |
/*
|
651 |
* (non-Javadoc)
|
652 |
* @see org.gvsig.fmap.grid.IQueryableGrid#getCellValueAsByte(int, int)
|
653 |
*/
|
654 |
public byte getCellValueAsByte(int x, int y)throws RasterBufferInvalidAccessException { |
655 |
return reader.getCellValueAsByte(x, y);
|
656 |
} |
657 |
|
658 |
/*
|
659 |
* (non-Javadoc)
|
660 |
* @see org.gvsig.fmap.grid.IQueryableGrid#getCellValueAsShort(int, int)
|
661 |
*/
|
662 |
public short getCellValueAsShort(int x, int y)throws RasterBufferInvalidAccessException { |
663 |
return (short) reader.getCellValueAsShort(x, y); |
664 |
} |
665 |
|
666 |
/*
|
667 |
* (non-Javadoc)
|
668 |
* @see org.gvsig.fmap.grid.IQueryableGrid#getCellValueAsInt(int, int)
|
669 |
*/
|
670 |
public int getCellValueAsInt(int x, int y)throws RasterBufferInvalidAccessException { |
671 |
return (int) reader.getCellValueAsInt(x, y); |
672 |
} |
673 |
|
674 |
/*
|
675 |
* (non-Javadoc)
|
676 |
* @see org.gvsig.fmap.grid.IQueryableGrid#getCellValueAsFloat(int, int)
|
677 |
*/
|
678 |
public float getCellValueAsFloat(int x, int y)throws RasterBufferInvalidAccessException { |
679 |
return reader.getCellValueAsFloat(x, y);
|
680 |
} |
681 |
|
682 |
/*
|
683 |
* (non-Javadoc)
|
684 |
* @see org.gvsig.fmap.grid.IQueryableGrid#getCellValueAsDouble(int, int)
|
685 |
*/
|
686 |
public double getCellValueAsDouble(int x, int y)throws RasterBufferInvalidAccessException { |
687 |
return (double) reader.getCellValueAsDouble(x, y); |
688 |
} |
689 |
|
690 |
/*
|
691 |
* (non-Javadoc)
|
692 |
* @see org.gvsig.fmap.grid.IQueryableGrid#getNoDataValue()
|
693 |
*/
|
694 |
public double getNoDataValue(){ |
695 |
return (double) rasterBuf.getNoDataValue(); |
696 |
} |
697 |
|
698 |
/*
|
699 |
* (non-Javadoc)
|
700 |
* @see org.gvsig.fmap.grid.IQueryableGrid#getMinValue()
|
701 |
*/
|
702 |
public double getMinValue(){ |
703 |
if (!statistic.isStatisticsCalculated())
|
704 |
try {
|
705 |
statistic.calculateStatistics(); |
706 |
} catch (RasterBufferInvalidAccessException e) {
|
707 |
//No se calculan las estad?sticas. No hacemos nada
|
708 |
e.printStackTrace(); |
709 |
} |
710 |
return statistic.getMin();
|
711 |
} |
712 |
|
713 |
/*
|
714 |
* (non-Javadoc)
|
715 |
* @see org.gvsig.fmap.grid.IQueryableGrid#getMaxValue()
|
716 |
*/
|
717 |
public double getMaxValue(){ |
718 |
if (!statistic.isStatisticsCalculated())
|
719 |
try {
|
720 |
statistic.calculateStatistics(); |
721 |
} catch (RasterBufferInvalidAccessException e) {
|
722 |
//No se calculan las estad?sticas. No hacemos nada
|
723 |
e.printStackTrace(); |
724 |
} |
725 |
return statistic.getMin();
|
726 |
} |
727 |
|
728 |
/*
|
729 |
* (non-Javadoc)
|
730 |
* @see org.gvsig.fmap.grid.IQueryableGrid#getMeanValue()
|
731 |
*/
|
732 |
public double getMeanValue(){ |
733 |
if (!statistic.isStatisticsCalculated())
|
734 |
try {
|
735 |
statistic.calculateStatistics(); |
736 |
} catch (RasterBufferInvalidAccessException e) {
|
737 |
//No se calculan las estad?sticas. No hacemos nada
|
738 |
e.printStackTrace(); |
739 |
} |
740 |
return statistic.getMin();
|
741 |
} |
742 |
|
743 |
/*
|
744 |
* (non-Javadoc)
|
745 |
* @see org.gvsig.fmap.grid.IQueryableGrid#getVariance()
|
746 |
*/
|
747 |
public double getVariance(){ |
748 |
if (!statistic.isStatisticsCalculated())
|
749 |
try {
|
750 |
statistic.calculateStatistics(); |
751 |
} catch (RasterBufferInvalidAccessException e) {
|
752 |
//No se calculan las estad?sticas. No hacemos nada
|
753 |
e.printStackTrace(); |
754 |
} |
755 |
return statistic.getVariance();
|
756 |
} |
757 |
|
758 |
/*
|
759 |
* (non-Javadoc)
|
760 |
* @see org.gvsig.fmap.grid.IQueryableGrid#setInterpolationMethod(int)
|
761 |
*/
|
762 |
public void setInterpolationMethod(int iMethod){ |
763 |
if (reader instanceof GridInterpolated) |
764 |
((GridInterpolated) reader).setInterpolationMethod(iMethod); |
765 |
else{
|
766 |
this.switchToInterpolationMethod(true); |
767 |
((GridInterpolated) reader).setInterpolationMethod(iMethod); |
768 |
} |
769 |
} |
770 |
|
771 |
/*
|
772 |
* (non-Javadoc)
|
773 |
* @see org.gvsig.fmap.grid.IQueryableGrid#getNX()
|
774 |
*/
|
775 |
public int getNX(){ |
776 |
return reader.getNX();
|
777 |
} |
778 |
|
779 |
/*
|
780 |
* (non-Javadoc)
|
781 |
* @see org.gvsig.fmap.grid.IQueryableGrid#getNY()
|
782 |
*/
|
783 |
public int getNY(){ |
784 |
return reader.getNY();
|
785 |
} |
786 |
|
787 |
/*
|
788 |
* (non-Javadoc)
|
789 |
* @see org.gvsig.fmap.grid.IQueryableGrid#getLayerNX()
|
790 |
*/
|
791 |
public int getLayerNX(){ |
792 |
return layerExtent.getNX();
|
793 |
} |
794 |
|
795 |
/*
|
796 |
* (non-Javadoc)
|
797 |
* @see org.gvsig.fmap.grid.IQueryableGrid#getLayerNY()
|
798 |
*/
|
799 |
public int getLayerNY(){ |
800 |
return layerExtent.getNY();
|
801 |
} |
802 |
|
803 |
/*
|
804 |
* (non-Javadoc)
|
805 |
* @see org.gvsig.fmap.grid.IWritableGrid#getGridExtent()
|
806 |
*/
|
807 |
/*public GridExtent getGridExtent(){
|
808 |
return windowExtent;
|
809 |
}*/
|
810 |
|
811 |
public int getDataType(){ |
812 |
return dataType;
|
813 |
} |
814 |
|
815 |
private boolean getSubMatrix3x3(int x, int y, double SubMatrix[])throws RasterBufferInvalidAccessException{ |
816 |
int i;
|
817 |
int iDir;
|
818 |
double z, z2;
|
819 |
|
820 |
z = getCellValueAsDouble(x, y); |
821 |
|
822 |
if(isNoDataValue(z)){
|
823 |
return false; |
824 |
} |
825 |
else{
|
826 |
//SubMatrix[4] = 0.0;
|
827 |
for(i=0; i<4; i++){ |
828 |
|
829 |
iDir = 2 * i;
|
830 |
z2 = getCellValueAsDouble(x + m_iOffsetX[iDir], y + m_iOffsetY[iDir]); |
831 |
if( !isNoDataValue(z2)){
|
832 |
SubMatrix[i] = z2 - z; |
833 |
} |
834 |
else{
|
835 |
z2 = getCellValueAsDouble(x + m_iOffsetX[(iDir + 4) % 8], y + m_iOffsetY[(iDir + 4) % 8]); |
836 |
if( !isNoDataValue(z2)){
|
837 |
SubMatrix[i] = z - z2; |
838 |
} |
839 |
else{
|
840 |
SubMatrix[i] = 0.0;
|
841 |
} |
842 |
} |
843 |
} |
844 |
|
845 |
return true; |
846 |
} |
847 |
} |
848 |
|
849 |
public double getSlope(int x, int y)throws RasterBufferInvalidAccessException{ |
850 |
double zm[], G, H; |
851 |
|
852 |
zm = new double[4]; |
853 |
|
854 |
if( getSubMatrix3x3(x, y, zm) ){
|
855 |
G = (zm[0] - zm[2]) / _2DX; |
856 |
H = (zm[1] - zm[3]) / _2DX; |
857 |
return Math.atan(Math.sqrt(G*G + H*H)); |
858 |
} |
859 |
else{
|
860 |
return rasterBuf.getNoDataValue();
|
861 |
} |
862 |
} |
863 |
|
864 |
public double getAspect(int x, int y)throws RasterBufferInvalidAccessException{ |
865 |
double zm[], G, H, dAspect; |
866 |
|
867 |
zm = new double[4]; |
868 |
|
869 |
if( getSubMatrix3x3(x, y, zm) ){
|
870 |
G = (zm[0] - zm[2]) / _2DX; |
871 |
H = (zm[1] - zm[3]) / _2DX; |
872 |
if( G != 0.0 ) |
873 |
dAspect = DEG_180_IN_RAD + Math.atan2(H, G);
|
874 |
else
|
875 |
dAspect = H > 0.0 ? DEG_270_IN_RAD : (H < 0.0 ? DEG_90_IN_RAD : -1.0); |
876 |
return dAspect;
|
877 |
} |
878 |
else
|
879 |
return rasterBuf.getNoDataValue();
|
880 |
} |
881 |
|
882 |
public static int getXOffsetInDir(int iDir){ |
883 |
return m_iOffsetX[iDir];
|
884 |
} |
885 |
|
886 |
public static int getYOffsetInDir(int iDir){ |
887 |
return m_iOffsetY[iDir];
|
888 |
} |
889 |
|
890 |
public double getDistToNeighborInDir(int iDir){ |
891 |
return m_dDist[iDir];
|
892 |
} |
893 |
|
894 |
public static double getUnitDistToNeighborInDir(int iDir){ |
895 |
return( (iDir % 2 != 0) ? Math.sqrt(2.0) : 1.0 ); |
896 |
} |
897 |
|
898 |
/*
|
899 |
* (non-Javadoc)
|
900 |
* @see org.gvsig.fmap.grid.IQueryableGrid#getDirToNextDownslopeCell(int, int)
|
901 |
*/
|
902 |
public int getDirToNextDownslopeCell(int x, int y)throws RasterBufferInvalidAccessException{ |
903 |
return getDirToNextDownslopeCell(x, y, true); |
904 |
} |
905 |
|
906 |
/*
|
907 |
* (non-Javadoc)
|
908 |
* @see org.gvsig.fmap.grid.IQueryableGrid#getDirToNextDownslopeCell(int, int, boolean)
|
909 |
*/
|
910 |
public int getDirToNextDownslopeCell(int x, int y, boolean bForceDirToNoDataCell) |
911 |
throws RasterBufferInvalidAccessException{
|
912 |
|
913 |
int i, iDir;
|
914 |
double z, z2, dSlope, dMaxSlope;
|
915 |
|
916 |
z = getCellValueAsDouble(x, y); |
917 |
|
918 |
if(isNoDataValue(z)){
|
919 |
return -1; |
920 |
} |
921 |
|
922 |
dMaxSlope = 0.0;
|
923 |
for(iDir=-1, i=0; i<8; i++){ |
924 |
z2 = getCellValueAsDouble(x + m_iOffsetX[i], y + m_iOffsetY[i]); |
925 |
if(isNoDataValue(z2)){
|
926 |
if (bForceDirToNoDataCell){
|
927 |
return i;
|
928 |
} |
929 |
else{
|
930 |
return -1; |
931 |
} |
932 |
} |
933 |
else{
|
934 |
dSlope = (z - z2) / getDistToNeighborInDir(i); |
935 |
if( dSlope > dMaxSlope ){
|
936 |
iDir = i; |
937 |
dMaxSlope = dSlope; |
938 |
} |
939 |
} |
940 |
} |
941 |
|
942 |
return iDir;
|
943 |
|
944 |
} |
945 |
|
946 |
public GridCell[] getSortedArrayOfCells()throws RasterBufferInvalidAccessException{ |
947 |
int i;
|
948 |
int iX,iY;
|
949 |
int iNX = getNX();
|
950 |
int iCells = getNX() * getNY();
|
951 |
GridCell [] cells = null; |
952 |
GridCell cell = null;
|
953 |
|
954 |
cells = new GridCell[iCells];
|
955 |
|
956 |
for (i = 0; i < iCells; i++){ |
957 |
iX = i % iNX; |
958 |
iY = i / iNX; |
959 |
switch(getDataType()){
|
960 |
case IBuffer.TYPE_BYTE: cell = new GridCell(iX, iY, getCellValueAsByte(iX, iY)); break; |
961 |
case IBuffer.TYPE_SHORT: cell = new GridCell(iX, iY, getCellValueAsShort(iX, iY)); break; |
962 |
case IBuffer.TYPE_INT: cell = new GridCell(iX, iY, getCellValueAsInt(iX, iY)); break; |
963 |
case IBuffer.TYPE_FLOAT: cell = new GridCell(iX, iY, getCellValueAsFloat(iX, iY)); break; |
964 |
case IBuffer.TYPE_DOUBLE: cell = new GridCell(iX, iY, getCellValueAsDouble(iX, iY)); break; |
965 |
} |
966 |
|
967 |
cells[i] = cell; |
968 |
} |
969 |
|
970 |
Arrays.sort(cells);
|
971 |
|
972 |
return cells;
|
973 |
} |
974 |
|
975 |
/**
|
976 |
* Obtiene el estado de transparencia
|
977 |
* @return Objeto con el estado de transparencia del grid
|
978 |
*/
|
979 |
public GridTransparency getTransparency() {
|
980 |
return transparency;
|
981 |
} |
982 |
|
983 |
/**
|
984 |
* Asigna el estado de transparencia
|
985 |
* @param Objeto con el estado de transparencia del grid
|
986 |
*/
|
987 |
public void setTransparency(GridTransparency transparency) { |
988 |
this.transparency = transparency;
|
989 |
} |
990 |
|
991 |
/**
|
992 |
* Obtiene la paleta para el caso de un MDT. Esta funci?n evita el tener que obtener
|
993 |
* un array de paletas y buscar en el cuando se trata de un caso simple de MDT de una
|
994 |
* sola banda. Comprueba que se trata de un raster monobanda con paleta asociada antes
|
995 |
* de devolverla.
|
996 |
* @return GridPalette asociada al Grid
|
997 |
*/
|
998 |
public GridPalette getMDTPalette(){
|
999 |
if( rasterBuf != null && |
1000 |
rasterBuf.getBandCount() == 1 &&
|
1001 |
palette != null)
|
1002 |
return palette[0]; |
1003 |
return null; |
1004 |
} |
1005 |
|
1006 |
/**
|
1007 |
* Obtiene la lista de paletas asociadas al grid
|
1008 |
* @return Lista de objetos GridPalette
|
1009 |
*/
|
1010 |
public GridPalette[] getPalettes() { |
1011 |
return palette;
|
1012 |
} |
1013 |
|
1014 |
/**
|
1015 |
* Asigna la lista de paletas asociadas al grid
|
1016 |
* @param palette Lista de objetos GridPalette
|
1017 |
*/
|
1018 |
public void setPalettes(GridPalette[] palette) { |
1019 |
this.palette = palette;
|
1020 |
} |
1021 |
|
1022 |
/**
|
1023 |
* Obtiene la lista de filtros.
|
1024 |
* @return Lista de filtros.
|
1025 |
*/
|
1026 |
public RasterFilterList getFilterList(){
|
1027 |
return filterList;
|
1028 |
} |
1029 |
|
1030 |
/**
|
1031 |
* Asigna la lista de filtros
|
1032 |
* @param filterList
|
1033 |
*/
|
1034 |
public void setFilterList(RasterFilterList filterList){ |
1035 |
this.filterList = filterList;
|
1036 |
} |
1037 |
|
1038 |
/**
|
1039 |
*Aplica la lista de filtros sobre el buffer
|
1040 |
*/
|
1041 |
public void applyFilters(){ |
1042 |
if(filterList == null) |
1043 |
return;
|
1044 |
filterList.setInitRasterBuf(rasterBuf); |
1045 |
filterList.execute(); |
1046 |
rasterBuf = (RasterBuffer)filterList.getResult(); |
1047 |
dataType = rasterBuf.getDataType(); |
1048 |
} |
1049 |
|
1050 |
/**
|
1051 |
* Obtiene el buffer de datos del grid
|
1052 |
* @return RasterBuf
|
1053 |
*/
|
1054 |
public IBuffer getRasterBuf() {
|
1055 |
return rasterBuf;
|
1056 |
} |
1057 |
|
1058 |
/**
|
1059 |
* Asigna la banda sobre la que se realizan las operaciones. Por defecto es la banda 0
|
1060 |
* con lo que para el uso de MDTs no habr? que modificar este valor.
|
1061 |
* @param band Banda sobre la que se realizan las operaciones.
|
1062 |
*/
|
1063 |
public void setBandToOperate(int band){ |
1064 |
if(writer != null) |
1065 |
writer.setBandToOperate(band); |
1066 |
if(reader != null) |
1067 |
reader.setBandToOperate(band); |
1068 |
} |
1069 |
|
1070 |
/**
|
1071 |
* Obtiene el extent de la ventana seleccionada para petici?n de datos
|
1072 |
* @return GridExtent
|
1073 |
*/
|
1074 |
public GridExtent getWindowExtent(){
|
1075 |
return windowExtent;
|
1076 |
} |
1077 |
|
1078 |
/**
|
1079 |
* Obtiene el extent del grid para petici?n de datos
|
1080 |
* @return GridExtent
|
1081 |
*/
|
1082 |
public GridExtent getGridExtent(){
|
1083 |
return layerExtent;
|
1084 |
} |
1085 |
} |