root / branches / v2_0_0_prep / extensions / extRemoteSensing / src / org / gvsig / remotesensing / gridmath / GridMathProcess.java @ 28315
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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 Instituto de Desarrollo Regional 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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* For more information, contact:
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*
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* Generalitat Valenciana
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* Conselleria d'Infraestructures i Transport
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* Av. Blasco Iba�ez, 50
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* 46010 VALENCIA
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* SPAIN
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*
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* +34 963862235
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* gvsig@gva.es
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* www.gvsig.gva.es
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*
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* or
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*
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* Instituto de Desarrollo Regional (Universidad de Castilla La-Mancha)
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* Campus Universitario s/n
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* 02071 Alabacete
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* Spain
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*
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* +34 967 599 200
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*/
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package org.gvsig.remotesensing.gridmath; |
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import java.awt.geom.AffineTransform; |
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import java.io.File; |
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import java.io.IOException; |
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import java.util.HashMap; |
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import java.util.Iterator; |
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import org.gvsig.fmap.mapcontext.MapContext; |
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import org.gvsig.fmap.mapcontext.exceptions.LoadLayerException; |
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import org.gvsig.fmap.mapcontext.layers.FLayer; |
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import org.gvsig.fmap.mapcontext.layers.FLayers; |
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import org.gvsig.fmap.raster.layers.FLyrRasterSE; |
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import org.gvsig.gui.beans.incrementabletask.IncrementableEvent; |
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import org.gvsig.raster.RasterProcess; |
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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.WriterBufferServer; |
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import org.gvsig.raster.dataset.*; |
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import org.gvsig.raster.dataset.io.RasterDriverException; |
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import org.gvsig.raster.grid.GridExtent; |
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import org.gvsig.raster.process.CancelEvent; |
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import org.gvsig.raster.util.RasterToolsUtil; |
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import org.gvsig.remotesensing.RemoteSensingUtils; |
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import org.gvsig.remotesensing.gridmath.gui.GridMathPanel; |
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import org.nfunk.jep.JEP; |
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import org.nfunk.jep.Variable; |
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import com.iver.andami.PluginServices; |
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/**
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* GridMathProcess implenta la funcionalidad para el c�lculo de operaciones entre grids.
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* El proceso permite hacer operaciones matem�ticas entre los valores de las bandas de la misma imagen o entre
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* diferentes im�genes bajo ciertas restricciones espaciales (siempre sobre los datos originales).
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*
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* @author Alejandro Mu�oz Sanchez (alejandro.munoz@uclm.es)
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* @author Diego Guerrero Sevilla (diego.guerrero@uclm.es)
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* @version 19/10/2007
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*
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*/
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public class GridMathProcess extends RasterProcess{ |
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HashMap params = null; // Asignacion de variables a grids. |
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JEP parser = null;
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String expression = null; |
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GridExtent resultExtent = null;
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private WriterBufferServer writerBufferServer = null; |
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private int percent = 0; |
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private boolean cancel = false; |
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private MapContext mapContext = null; |
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private String filePath = null; |
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private AffineTransform aTransform = null; |
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private RasterBuffer rasterResult = null; |
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private GridMathPanel gridMathPanel = null; |
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private boolean loadEnd= false; |
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int loadBuffers =0; |
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int numVar =1; |
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/**
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* Constructor
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*/
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public GridMathProcess(){
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parser = new JEP();
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parser.setAllowUndeclared(true);
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parser.addStandardFunctions(); |
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} |
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/**
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* @return HashMap con las variables asociadas a sus grid correspondientes
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* */
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public HashMap getParams() { |
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return params;
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} |
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/**
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* Asigna el params con las variables
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* @param params
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*/
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public void setParams(HashMap params) { |
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this.params = params;
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} |
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/**
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* Establece la expresi�n en el parser
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* @param expression expresion
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*/
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public void setExpression(String expression){ |
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this.expression = expression;
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parser.getSymbolTable().clear(); |
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parser.parseExpression(expression); |
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} |
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/**
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* @return expresi�n a evaluar
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*/
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public String getExpression() { |
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return expression;
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} |
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/**
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* @return true si en el parseo de la expresion hay error
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*/
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public boolean hasError(){ |
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if (parser!=null) |
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return parser.hasError();
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else
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return true; |
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} |
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/**
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* Escritura del resultado en disco.
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*/
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private void writeToFile(){ |
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if(filePath==null) |
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return;
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try {
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writerBufferServer = new WriterBufferServer(rasterResult);
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aTransform = new AffineTransform(resultExtent.getCellSizeX(), 0.0, 0.0, -resultExtent.getCellSizeY(), resultExtent.getMin().getX(), resultExtent.getMax().getY()); |
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GeoRasterWriter grw = GeoRasterWriter.getWriter(writerBufferServer, filePath, rasterResult.getBandCount(), aTransform, resultExtent.getNX(), resultExtent.getNY(), rasterResult.getDataType(), GeoRasterWriter.getWriter(filePath).getParams(), mapContext.getProjection()); |
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grw.dataWrite(); |
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grw.writeClose(); |
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} catch (NotSupportedExtensionException e) {
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RasterToolsUtil.messageBoxError(PluginServices.getText(this, "error_writer_notsupportedextension"), this, e); |
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} catch (IOException e) { |
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RasterToolsUtil.messageBoxError(PluginServices.getText(this, "error_writer"), this, e); |
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} catch (InterruptedException e) { |
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Thread.currentThread().interrupt();
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} catch (RasterDriverException e) {
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RasterToolsUtil.messageBoxError(PluginServices.getText(this, "raster_buffer_invalid_extension"), this, e); |
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} |
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mapContext.beginAtomicEvent(); |
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FLayer lyr = null;
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int endIndex = filePath.lastIndexOf("."); |
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if (endIndex < 0) |
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endIndex = filePath.length(); |
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try {
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lyr = FLyrRasterSE.createLayer( |
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filePath.substring(filePath.lastIndexOf(File.separator) + 1, endIndex), |
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new File(filePath), |
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mapContext.getProjection()); |
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} catch (LoadLayerException e) {
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RasterToolsUtil.messageBoxError("error_cargar_capa", this, e); |
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} |
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mapContext.getLayers().addLayer(lyr); |
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mapContext.endAtomicEvent(); |
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mapContext.invalidate(); |
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mapContext.endAtomicEvent(); |
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} |
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/**
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* @return extent del resultadoroot
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*/
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public GridExtent getResultExtent() {
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return resultExtent;
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} |
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/**
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* Asignaci�n del extent
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* @param resultExtent
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*/
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public void setResultExtent(GridExtent resultExtent) { |
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this.resultExtent = resultExtent;
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} |
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/*
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* (non-Javadoc)
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* @see org.gvsig.gui.beans.incrementabletask.IIncrementable#getLabel()
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*/
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public String getLabel() { |
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return PluginServices.getText(this,"procesando"); |
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} |
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/*
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* (non-Javadoc)
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* @see org.gvsig.gui.beans.incrementabletask.IIncrementable#getTitle()
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*/
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public String getTitle() { |
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return PluginServices.getText(this,"band_math"); |
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} |
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/*
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* (non-Javadoc)
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* @see org.gvsig.gui.beans.incrementabletask.IIncrementable#actionCanceled
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*/
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public void actionCanceled(IncrementableEvent e) { |
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if(writerBufferServer != null) |
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rasterTask.setEvent(new CancelEvent(this)); |
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cancel = true;
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} |
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public void init() { |
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gridMathPanel= (GridMathPanel)getParam("panel");
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expression= getStringParam("expresion");
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setExpression(expression); |
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params= (HashMap )getParam("params"); |
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resultExtent= (GridExtent) getParam("extent");
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mapContext= (MapContext)getParam("mapcontext");
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filePath= getStringParam("filepath");
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loadBuffers(); |
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} |
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public void process() throws InterruptedException { |
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RasterBuffer inputBuffer=null;
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// Construccion del rasterbuffer que recoge el resultado del calculo
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rasterResult = RasterBuffer.getBuffer(RasterBuffer.TYPE_DOUBLE, resultExtent.getNX() ,resultExtent.getNY(), 1, true); |
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// Calculo de grid resultante
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int iNX = resultExtent.getNX();
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int iNY = resultExtent.getNY();
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// Calculo de grid resultante
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for (int x=0;x<iNX;x++){ |
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if (cancel) return; //Proceso cancelado |
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for(int y=0;y<iNY;y++){ |
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int i=0; |
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for (Iterator iter = params.keySet().iterator(); iter.hasNext();) { |
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String varName = (String)iter.next(); |
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Object data[]= (Object[])params.get(varName); |
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inputBuffer= (RasterBuffer)data[0];
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int dataType= ((Integer)data[1]).intValue(); |
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double value=0; |
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if(dataType==IBuffer.TYPE_BYTE){
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value =(byte) RemoteSensingUtils.getCellValueInLayerCoords(inputBuffer, x, y, 0); |
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if(value!=inputBuffer.getNoDataValue()){
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parser.setVarValue(varName,new Double(value)); |
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i++; |
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}else{
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rasterResult.setElem(y, x, 0, rasterResult.noDataValue);
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break;
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} |
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}else{
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value =RemoteSensingUtils.getCellValueInLayerCoords(inputBuffer, x, y, 0);
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if(value!=inputBuffer.getNoDataValue()){
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parser.setVarValue(varName,new Double(value)); |
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i++; |
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}else{
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rasterResult.setElem(y, x, 0, rasterResult.noDataValue);
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break;
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} |
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} |
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} |
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// Evaluacion de la expresion en el x,y.
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if (i == params.size()){
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rasterResult.setElem(y, x, 0, (double)parser.getValue()); |
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percent = x*100/rasterResult.getWidth();
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} |
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} |
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} |
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// Escritura de los datos a disco
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writeToFile(); |
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} |
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void loadBuffers(){
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int nBand;
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String layerBand;
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String layerName;
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FLyrRasterSE rasterLayer; |
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FLayers layers = gridMathPanel.getView().getModel().getMapContext().getLayers(); |
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RasterBuffer valor=null;
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int numVar= gridMathPanel.getCalculatorPanel().getJTableVariables().getTableFormat().getRowCount();
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for (int i=0;i<numVar;i++){ |
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layerBand= gridMathPanel.getCalculatorPanel().getJTableVariables().getTableFormat().getValueAt(i,1).toString();
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layerName = layerBand.substring(0,layerBand.indexOf("[")); |
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nBand = Integer.valueOf(layerBand.substring(layerBand.lastIndexOf("Band")+4,layerBand.lastIndexOf("]"))).intValue(); |
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rasterLayer = (FLyrRasterSE)layers.getLayer(layerName); |
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double minX=0,minY=0,maxX=0,maxY=0; |
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minX= gridMathPanel.getOutputExtent().getMin().getX(); |
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minY= gridMathPanel.getOutputExtent().getMin().getY(); |
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maxX= gridMathPanel.getOutputExtent().getMax().getX(); |
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maxY =gridMathPanel.getOutputExtent().getMax().getY(); |
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try {
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IRasterDataSource dsetCopy = null;
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dsetCopy = rasterLayer.getDataSource().newDataset(); |
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BufferFactory bufferFactory = new BufferFactory(dsetCopy);
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if (!RasterBuffer.loadInMemory(dsetCopy))
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bufferFactory.setReadOnly(true);
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bufferFactory.setAdjustToExtent(false);
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bufferFactory.setDrawableBands(new int[]{nBand-1}); |
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bufferFactory.setAreaOfInterest(minX,minY,maxX,maxY,gridMathPanel.getOutputExtent().getNX(),gridMathPanel.getOutputExtent().getNY()); |
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valor=(RasterBuffer) bufferFactory.getRasterBuf(); |
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loadBuffers+=1;
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} catch (ArrayIndexOutOfBoundsException e) { |
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RasterToolsUtil.messageBoxError(PluginServices.getText(this, "error_writer"), this, e); |
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} catch (InvalidSetViewException e) {
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e.printStackTrace(); |
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} catch (InterruptedException e) { |
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Thread.currentThread().interrupt();
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} catch (RasterDriverException e) {
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e.printStackTrace(); |
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} |
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gridMathPanel.getCalculatorPanel().getQWindowsHash().put(gridMathPanel.getCalculatorPanel().getJTableVariables().getTableFormat().getValueAt(i,0).toString(),new Object[]{valor,new Integer(valor.getDataType())}); |
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} |
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gridMathPanel.getGridMath().setParams(gridMathPanel.getCalculatorPanel().getQWindowsHash()); |
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JEP parser = new JEP();
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parser.setAllowUndeclared(true);
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parser.addStandardFunctions(); |
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parser.parseExpression(gridMathPanel.getCalculatorPanel().getJTextExpression().getText()); |
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for (Iterator iter = parser.getSymbolTable().values().iterator(); iter.hasNext();) { |
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Variable variable = (Variable) iter.next(); |
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if (!gridMathPanel.getGridMath().getParams().containsKey(variable.getName())){
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RasterToolsUtil.messageBoxError(PluginServices.getText(this,"variables_sin_asignar"),this); |
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return;
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} |
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} |
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params= gridMathPanel.getGridMath().getParams(); |
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loadEnd= true;
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} |
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public int getPercent(){ |
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/*if(!loadEnd)
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return (int)((loadBuffers-1)/numVar)*100;
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else */if(writerBufferServer!=null) |
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return writerBufferServer.getPercent();
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else
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return percent;
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} |
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/*
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* (non-Javadoc)
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* @see org.gvsig.gui.beans.incrementabletask.IIncrementable#getLog()
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*/
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public String getLog() { |
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/* if(!loadEnd)
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return PluginServices.getText(this,"cargando datos")+"...";*/
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/*else*/ if (writerBufferServer!=null) |
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return PluginServices.getText(this,"escribiendo_resultado")+"..."; |
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else
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return PluginServices.getText(this,"calculando_imagen")+"..."; |
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} |
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public Object getResult(){ |
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return rasterResult;
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} |
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} |