svn-gvsig-desktop / tags / v1_1_Build_1003 / libraries / libCq_CMS_praster / src / org / cresques / io / data / Grid.java @ 12271
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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.cresques.io.data; |
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import java.awt.geom.Point2D; |
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import org.cresques.io.GeoRasterFile; |
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import org.cresques.io.datastruct.Histogram; |
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import org.cresques.io.datastruct.Statistic; |
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import org.cresques.io.exceptions.FileFoundInListException; |
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import org.cresques.px.Extent; |
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import org.cresques.px.PxRaster; |
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import org.cresques.util.Utilities; |
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import org.cresques.filter.IRaster; |
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public class Grid implements IQueryableRaster, IWritableRaster { |
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private GeoRasterMultiFile grmf = new GeoRasterMultiFile(null); |
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private RasterBuf rasterBuf = null; |
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private Histogram histogram = null; |
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private PxRaster pxRaster = null; |
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private Statistic stats = null; |
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protected int width = 0; |
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protected int height = 0; |
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protected Extent dataExtent = null; |
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private double m_dNoDataValue = -99999; //TODO:temporal |
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/**
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* Constructor
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*/
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public Grid(){}
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/**
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* Constructor
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* @param grf Lista de geoRasterFile
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*/
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public Grid(GeoRasterFile[] grf){ |
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for(int i = 0; i< grf.length; i++) |
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addFile(grf[i]); |
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} |
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/**
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* Constructor
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* @param grf GeoRasterFile
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*/
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public Grid(GeoRasterFile grf){
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addFile(grf); |
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} |
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/**
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* Asigna el renderizador para el calculo de histogramas a partir
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* de la visualizaci?n.
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* @param pxR Renderizador.
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*/
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public void addRenderizer(PxRaster pxR){ |
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this.pxRaster = pxR;
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this.stats = pxR.stats;
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this.getHistogram().addRenderizer(pxR);
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} |
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/**
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* A?ade un GeoRasterFile al Grid
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* @param grf GeoRasterFile a a?adir
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*/
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public void addFile(GeoRasterFile grf){ |
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try{
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grmf.addFile(grf); |
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width = grf.getWidth(); |
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height = grf.getHeight(); |
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}catch(FileFoundInListException e){
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//El fichero est? en la lista por lo que no lo a?adimos
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} |
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} |
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/**
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* Elimina un GeoRasterFile del Grid
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* @param grf GeoRasterFile a eliminar
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*/
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public void removeFile(GeoRasterFile grf){ |
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grmf.removeFile(grf); |
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} |
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/**
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* Obtiene la estructura que contiene la lista de ficheros del Grid
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* @return GeoRasterMultiFile
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*/
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public GeoRasterMultiFile getGeoRasterMultiFile(){
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return grmf;
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} |
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/**
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* Libera el buffer de memoria
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*/
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public void free(){ |
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rasterBuf = null;
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System.gc();
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} |
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/**
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* Resetea la asignaci?n de dibujado de las bandas de la imagen
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* sobre el DataImage cuando se hace un update para esta banda.
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*/
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public void clearDrawableBand(){ |
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for(int i = 0; i< grmf.getFileCount(); i++) |
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grmf.getBands().clearDrawableBand(); |
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} |
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/**
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* Para este GeoRasterFile asigna que bandas se pintaran
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* sobre el RasterBuf cuando se haga un update. Cada posici?n del vector es una banda
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* del rasterBuf y el contenido de esa posici?n es la banda de la imagen que se dibujar?
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* sobre ese RasterBuf.
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* @param drawableBands .
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*/
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public void addDrawableBands(int[] drawableBands){ |
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for(int i = 0; i< drawableBands.length; i++) |
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grmf.getBands().addDrawableBand(i, drawableBands[i]); |
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} |
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/**
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* Asigna el ?rea de interes en coordenadas del mundo real. Si las coordenadas exceden del tama?o de la imagen
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* estas coordenadas son ajustadas el extent.
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* @param x Coordenada X, esquina superior izquierda
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* @param y Coordenada Y, esquina superior izquierda
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* @param w Ancho del ?rea
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* @param h Alto del ?rea
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* @throws ArrayIndexOutOfBoundsException
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*/
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public void setAreaOfInterest(double x, double y, double w, double h) throws ArrayIndexOutOfBoundsException{ |
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dataExtent = new Extent(x, y, x + w, y - h);
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Extent fitExtent = Utilities.calculateAdjustedView(dataExtent, grmf.getExtent());
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rasterBuf = grmf.getWindowRaster(fitExtent.minX(), fitExtent.maxY(), fitExtent.width(), fitExtent.height()); |
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if(!Utilities.isInside(dataExtent, fitExtent)){ |
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double distWcX = Math.abs(fitExtent.getMin().getX() - dataExtent.getMin().getX()); |
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double distWcY = Math.abs(fitExtent.getMax().getY() - dataExtent.getMax().getY()); |
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double mtsPixelX = grmf.getExtent().width() / grmf.getWidth();
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double mtsPixelY = grmf.getExtent().width() / grmf.getWidth();
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double pxX = distWcX / mtsPixelX;
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double pxY = distWcY / mtsPixelY;
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double wPx = dataExtent.width() / mtsPixelX;
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double hPx = dataExtent.height() / mtsPixelY;
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RasterBuf buf = new RasterBuf(rasterBuf.getDataType(), (int)wPx, (int)hPx, rasterBuf.getBandCount(), true); |
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buf.setToNoData(); |
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for (int iBand = 0; iBand < rasterBuf.getBandCount(); iBand++) |
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for (int row = 0; row < rasterBuf.getHeight(); row++) |
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for (int col = 0; col < rasterBuf.getWidth(); col++) |
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buf.setElemByte((int)(row + pxY), (int)(col + pxX), |
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iBand, |
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rasterBuf.getElemByte(row, col, iBand)); |
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rasterBuf = buf; |
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} |
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} |
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/**
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* Asigna el ?rea de interes en coordenadas pixel. Si las coordenadas exceden del tama?o de la imagen
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* lanza una excepci?n.
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* @param x Coordenada X, esquina superior izquierda
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* @param y Coordenada Y, esquina superior izquierda
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* @param w Ancho del ?rea
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* @param h Alto del ?rea
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* @throws ArrayIndexOutOfBoundsException
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*/
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public void setAreaOfInterest(int x, int y, int w, int h) throws ArrayIndexOutOfBoundsException{ |
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if((x + w) > getWidth() || (y + h) > getHeight())
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throw new ArrayIndexOutOfBoundsException("Out of Image"); |
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Point2D begin = grmf.rasterToWorld(new Point2D.Double(x, y)); |
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Point2D end = grmf.rasterToWorld(new Point2D.Double(x + w, y + h)); |
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if(begin != null && end != null) |
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dataExtent = new Extent(begin, end);
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rasterBuf = grmf.getWindowRaster(x, y, w, h); |
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//width = rasterBuf.getWidth();
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//height = rasterBuf.getHeight();
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} |
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/*
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* (non-Javadoc)
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* @see org.gvsig.fmap.dataaccess.IQueryableRaster#setAreaOfInterest(double, double, double, double, int, int)
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*/
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public int[] setAreaOfInterest(double minX, double minY, double maxX, double maxY, int bufWidth, int bufHeight) throws ArrayIndexOutOfBoundsException{ |
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//TODO: VALIDACI?N: Comprobaci?n de exceso de memoria reservada
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dataExtent = new Extent(minX, minY, maxX, maxY);
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Extent fitExtent = Utilities.calculateAdjustedView(dataExtent, grmf.getExtent());
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//Caso en que la extensi?n pedida SI se sale fuera del ?rea del raster
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//El pixel a medias entre NoData y datos se pone NoData
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if(Utilities.isOutside(dataExtent, grmf.getExtent())) { |
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double error = 0.01; |
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//Upper Left
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double distWcX = Math.abs(fitExtent.getMin().getX() - dataExtent.getMin().getX()); |
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distWcX = (distWcX > error) ? distWcX : 0;
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double distWcY = Math.abs(fitExtent.getMax().getY() - dataExtent.getMax().getY()); |
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distWcY = (distWcY > error) ? distWcY : 0;
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//Pixel inicial del buffer donde se empieza a dibujar. Redondeamos por arriba pq lo que sobra se pone NoData
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double initPxX = Math.ceil((distWcX * bufWidth) / (Math.abs(maxX - minX))); |
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double initPxY = Math.ceil((distWcY * bufHeight) / (Math.abs(maxY - minY))); |
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//Obtenemos la coordenada real para el pixel inicial
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double wcXInit = (minX < grmf.getExtent().minX()) ? grmf.getExtent().minX() : minX;
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double wcYInit = (maxY > grmf.getExtent().maxY()) ? grmf.getExtent().maxY() : maxY;
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//Lower Right
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distWcX = Math.abs(fitExtent.getMax().getX() - dataExtent.getMin().getX());
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distWcX = (distWcX > error) ? distWcX : 0;
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distWcY = Math.abs(fitExtent.getMin().getY() - dataExtent.getMax().getY());
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distWcY = (distWcY > error) ? distWcY : 0;
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//Pixel final del buffer donde se dibuja. Redondeamos por abajo pq lo que sobra se pone NoData
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double endPxX = Math.floor((distWcX * bufWidth) / (Math.abs(maxX - minX))); |
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double endPxY = Math.floor((distWcY * bufHeight) / (Math.abs(maxY - minY))); |
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//Obtenemos la coordenada real para el pixel
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double wcXEnd = (maxX > grmf.getExtent().maxX()) ? grmf.getExtent().maxX() : maxX;
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double wcYEnd = (minY < grmf.getExtent().minY()) ? grmf.getExtent().minY() : minY;
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int copyX = (int)Math.abs(endPxX - initPxX); |
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int copyY = (int)Math.abs(endPxY - initPxY); |
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rasterBuf = grmf.getWindowRaster(wcXInit, wcYEnd, wcXEnd, wcYInit, copyX, copyY); |
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RasterBuf buf = new RasterBuf(rasterBuf.getDataType(), bufWidth, bufHeight, rasterBuf.getBandCount(), true); |
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buf.setNoDataValue(m_dNoDataValue); |
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buf.setToNoData(); |
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switch(rasterBuf.getDataType()) {
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case IRaster.TYPE_BYTE:
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for (int iBand = 0; iBand < rasterBuf.getBandCount(); iBand++) |
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for (int row = 0; row < copyY; row++) |
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for (int col = 0; col < copyX; col++) |
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buf.setElemByte((int)(row + initPxY), (int)(col + initPxX), |
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iBand, |
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rasterBuf.getElemByte(row, col, iBand)); |
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break;
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case IRaster.TYPE_SHORT:
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case IRaster.TYPE_USHORT:
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for (int iBand = 0; iBand < rasterBuf.getBandCount(); iBand++) |
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for (int row = 0; row < copyY; row++) |
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for (int col = 0; col < copyX; col++) |
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buf.setElemShort((int)(row + initPxY), (int)(col + initPxX), |
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iBand, |
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rasterBuf.getElemShort(row, col, iBand)); |
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break;
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case IRaster.TYPE_INT:
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for (int iBand = 0; iBand < rasterBuf.getBandCount(); iBand++) |
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for (int row = 0; row < copyY; row++) |
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for (int col = 0; col < copyX; col++) |
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buf.setElemInt((int)(row + initPxY), (int)(col + initPxX), |
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iBand, |
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rasterBuf.getElemInt(row, col, iBand)); |
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break;
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case IRaster.TYPE_FLOAT:
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for (int iBand = 0; iBand < rasterBuf.getBandCount(); iBand++) |
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for (int row = 0; row < copyY; row++) |
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for (int col = 0; col < copyX; col++) |
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buf.setElemFloat((int)(row + initPxY), (int)(col + initPxX), |
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iBand, |
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rasterBuf.getElemFloat(row, col, iBand)); |
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break;
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case IRaster.TYPE_DOUBLE:
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for (int iBand = 0; iBand < rasterBuf.getBandCount(); iBand++) |
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for (int row = 0; row < copyY; row++) |
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for (int col = 0; col < copyX; col++) |
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buf.setElemDouble((int)(row + initPxY), (int)(col + initPxX), |
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iBand, |
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rasterBuf.getElemDouble(row, col, iBand)); |
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break;
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} |
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rasterBuf = buf; |
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return null; |
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} |
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//Caso en que la extensi?n pedida NO se sale fuera del ?rea del raster
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rasterBuf = grmf.getWindowRaster(fitExtent.minX(), fitExtent.minY(), fitExtent.maxX(), fitExtent.maxY(), bufWidth, bufHeight); |
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return null; |
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} |
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/*
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* (non-Javadoc)
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* @see org.gvsig.fmap.dataaccess.IQueryableRaster#setAreaOfInterest(double, double, double, double)
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*/
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public void setAreaOfInterestWithNoData(double x, double y, double w, double h) throws ArrayIndexOutOfBoundsException{ |
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dataExtent = new Extent(x, y, x + w, y - h);
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rasterBuf = grmf.getWindowRasterWithNoData(dataExtent.getMin().getX(), dataExtent.getMax().getY(), w, h); |
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} |
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/**
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* Ajusta el ?rea del grid a un ancho y un alto dado en pixeles. Este ajuste se har?
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* en relaci?n a un m?todo de interpolaci?n definido en el par?metro.
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* @param w Ancho de la nueva imagen.
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* @param h Alto de la nueva imagen.
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* @param interpolation M?todo de interpolaci?n que se usar? en el ajuste.
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* @param bands Bandas que se desea en el nuevo RasterBuf ajustado. Si este par?metro es null
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* se usar?n todas las bandas de la imagen.
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*/
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public void setAdjustedWindow(int w, int h, int interpolationMethod, int[] bands){ |
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if(w == width && h == height)
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return;
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switch(interpolationMethod){
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case IQueryableRaster.INTERPOLATION_NearestNeighbour:
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rasterBuf = rasterBuf.adjustRasterNearestNeighbour(w, h, bands); |
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break;
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case IQueryableRaster.INTERPOLATION_Bilinear:
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System.out.println("Method not implemented yet"); |
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break;
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case IQueryableRaster.INTERPOLATION_InverseDistance:
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System.out.println("Method not implemented yet"); |
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break;
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case IQueryableRaster.INTERPOLATION_BicubicSpline:
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System.out.println("Method not implemented yet"); |
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break;
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case IQueryableRaster.INTERPOLATION_BSpline:
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System.out.println("Method not implemented yet"); |
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break;
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} |
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//width = rasterBuf.getWidth();
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//height = rasterBuf.getHeight();
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} |
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public RasterBuf getData(int x, int y, int w, int h) { |
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return null; |
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} |
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/**
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* Obtiene el tipo de datos del grid.
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* @return entero que representa el tipo de dato de las celdas del grid.
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*/
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public int getDataType() { |
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return grmf.getDataType()[0]; |
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} |
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/**
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* Obtiene la altura del grid.
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* @return altura en celdas del grid.
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*/
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public int getHeight() { |
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return height;
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} |
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/**
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* Obtiene la anchura del grid.
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* @return anchura en celdas del grid.
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*/
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public int getWidth() { |
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return width;
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} |
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public double getXCellSize() { |
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//TODO:remove this
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Extent e = grmf.getExtent(); |
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double dCellsize = (e.getMax().getX() - e.getMin().getX() ) / (double) width; |
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return dCellsize;
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} |
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public double getYCellSize() { |
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return 0; |
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} |
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public boolean isNoData(int x, int y, int band) { |
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return false; |
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} |
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public void setNoDataValue(double dNoDataValue){ |
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//TODO:temporal
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m_dNoDataValue = dNoDataValue; |
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} |
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public double getNoDataValue(){ |
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return m_dNoDataValue;
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} |
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public void setDataType(int dt) { |
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|
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} |
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public int getBandCount(){ |
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if(rasterBuf != null) |
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return rasterBuf.getBandCount();
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else
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return this.getGeoRasterMultiFile().getBandCount(); |
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} |
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/**
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* Obtiene el buffer de datos del grid
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* @return RasterBuf
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*/
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public RasterBuf getRasterBuf() {
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return rasterBuf;
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} |
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/**
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* Obtiene el objeto histograma asociado al grid
|
| 422 |
* @return
|
| 423 |
*/
|
| 424 |
public Histogram getHistogram() {
|
| 425 |
if(histogram == null) |
| 426 |
histogram = new Histogram(this); |
| 427 |
|
| 428 |
return histogram;
|
| 429 |
} |
| 430 |
|
| 431 |
/**
|
| 432 |
* Obtiene la clase para estadisticas
|
| 433 |
* @return
|
| 434 |
*/
|
| 435 |
public Statistic getStatistic() {
|
| 436 |
return stats;
|
| 437 |
} |
| 438 |
|
| 439 |
/**
|
| 440 |
* Evalua si una coordenada pixel cae dentro de la imagen.
|
| 441 |
* @param x coordenada pixel X
|
| 442 |
* @param y coordenada pixel Y
|
| 443 |
*/
|
| 444 |
public boolean isPixelInGrid(int x, int y){ |
| 445 |
return (x >= 0 && y >= 0 && x <= getWidth() && y <= getHeight()); |
| 446 |
} |
| 447 |
|
| 448 |
/**
|
| 449 |
* Extent de la fuente de datos
|
| 450 |
*/
|
| 451 |
public Extent getExtent(){
|
| 452 |
return grmf.getExtent();
|
| 453 |
} |
| 454 |
|
| 455 |
/**
|
| 456 |
* Extent del grid
|
| 457 |
*/
|
| 458 |
public Extent getDataExtent(){
|
| 459 |
return dataExtent;
|
| 460 |
} |
| 461 |
} |
| 462 |
|