root / trunk / libraries / libRaster / src / org / gvsig / raster / dataset / properties / DatasetStatistics.java @ 19409
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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.dataset.properties; |
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import java.io.File; |
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import java.io.IOException; |
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import java.util.ArrayList; |
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import java.util.Hashtable; |
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import org.gvsig.raster.RasterLibrary; |
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import org.gvsig.raster.dataset.FileNotOpenException; |
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import org.gvsig.raster.dataset.IBuffer; |
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import org.gvsig.raster.dataset.InvalidSetViewException; |
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import org.gvsig.raster.dataset.RasterDataset; |
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import org.gvsig.raster.dataset.io.RasterDriverException; |
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import org.gvsig.raster.dataset.io.rmf.ParsingException; |
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import org.gvsig.raster.dataset.io.rmf.RmfBlocksManager; |
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import org.gvsig.raster.dataset.serializer.StatisticsRmfSerializer; |
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import org.gvsig.raster.hierarchy.IStatistics; |
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import org.gvsig.raster.process.RasterTask; |
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import org.gvsig.raster.process.RasterTaskQueue; |
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import org.gvsig.raster.util.RasterUtilities; |
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/**
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* Estadisticas asociadas a un fichero raster.
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*
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* @author Nacho Brodin (nachobrodin@gmail.com)
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*/
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public class DatasetStatistics implements IStatistics { |
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/*
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* Esta a false si las estadisticas no son del fichero completo. Esto es posible porque podemos
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* tener unas estad?sticas calculadas a partir de una petici?n con subsampleo. Hay que tener en
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* cuenta que el raster puede ser muy grande y este calculo muy costoso.
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*/
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protected boolean complete = false; |
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protected double[] max = null; |
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protected double[] min = null; |
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protected double[] secondMax = null; |
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protected double[] secondMin = null; |
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protected double[] maxRGB = null; |
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protected double[] minRGB = null; |
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protected double[] secondMaxRGB = null; |
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protected double[] secondMinRGB = null; |
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protected double[] mean = null; |
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protected double[] variance = null; |
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protected String fName = null; |
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protected RasterDataset dataset = null; |
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protected boolean calculated = false; |
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protected Hashtable tailTrim = new Hashtable(); |
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protected ArrayList tailTrimValues = new ArrayList(); |
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private int bandCount = 0; |
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private int percent = 0; |
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private boolean forceToRecalc = false; |
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/**
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* Constructor. Asigna el fichero asociado.
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*/
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public DatasetStatistics(RasterDataset grf){
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this.dataset = grf;
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if(dataset != null) |
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bandCount = dataset.getBandCount(); |
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} |
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/**
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* Asigna el valor m?ximo del grid
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* @return Valor m?ximo
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*/
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public void setMax(double[] max) { |
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this.max = max;
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} |
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/**
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* Asigna el valor del segundo m?ximo
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* @return Valor del segundo m?ximo
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*/
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public void setSecondMax(double[] smax) { |
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this.secondMax = smax;
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} |
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/**
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* Asigna el valor m?ximo del grid
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* @return Valor m?ximo
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*/
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public void setMaxRGB(double[] max) { |
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this.maxRGB = max;
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} |
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/**
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* Asigna el valor del segundo m?ximo
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* @return Valor del segundo m?ximo
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*/
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public void setSecondMaxRGB(double[] smax) { |
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this.secondMaxRGB = smax;
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} |
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/**
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* Asigna el valor m?dio del grid
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* @return Valor medio
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*/
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public void setMean(double[] mean) { |
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this.mean = mean;
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} |
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/**
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* Asigna el valor m?ximo del grid
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* @return Valor m?nimo
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*/
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public void setMin(double[] min) { |
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this.min = min;
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} |
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/**
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* Asigna el valor del segundo m?nimo
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* @return Valor del segundo m?nimo
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*/
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public void setSecondMin(double[] smin) { |
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this.secondMin = smin;
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} |
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/**
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* Asigna el valor m?ximo del grid
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* @return Valor m?nimo
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*/
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public void setMinRGB(double[] min) { |
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this.minRGB = min;
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} |
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/**
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* Asigna el valor del segundo m?nimo
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* @return Valor del segundo m?nimo
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*/
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public void setSecondMinRGB(double[] smin) { |
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this.secondMinRGB = smin;
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} |
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/**
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* Asigna la varianza
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* @return Varianza
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*/
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public void setVariance(double[] variance) { |
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this.variance = variance;
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} |
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/*
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* (non-Javadoc)
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* @see org.gvsig.fmap.driver.IStatistics#getMin()
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*/
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public double[] getMin() { |
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return min;
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} |
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/*
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* (non-Javadoc)
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* @see org.gvsig.fmap.driver.IStatistics#getMax()
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*/
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public double[] getMax() { |
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return max;
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} |
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/*
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* (non-Javadoc)
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* @see org.gvsig.fmap.driver.IStatistics#getSecondMax()
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*/
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public double[] getSecondMax() { |
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return secondMax;
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} |
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/*
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* (non-Javadoc)
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* @see org.gvsig.fmap.driver.IStatistics#getSecondMin()
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*/
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public double[] getSecondMin() { |
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return secondMin;
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} |
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/*
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* (non-Javadoc)
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* @see org.gvsig.raster.hierarchy.IStatistics#getMinRGB()
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*/
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public double[] getMinRGB() { |
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return minRGB;
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} |
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/*
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* (non-Javadoc)
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* @see org.gvsig.raster.hierarchy.IStatistics#getMaxRGB()
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*/
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public double[] getMaxRGB() { |
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return maxRGB;
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} |
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/*
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* (non-Javadoc)
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* @see org.gvsig.raster.hierarchy.IStatistics#getSecondMaxRGB()
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*/
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public double[] getSecondMaxRGB() { |
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return secondMaxRGB;
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} |
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/*
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* (non-Javadoc)
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* @see org.gvsig.raster.hierarchy.IStatistics#getSecondMinRGB()
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*/
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public double[] getSecondMinRGB() { |
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return secondMinRGB;
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} |
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/*
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* (non-Javadoc)
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* @see org.gvsig.fmap.driver.IStatistics#getMaximun()
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*/
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public double getMaximun(){ |
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double m = Double.NEGATIVE_INFINITY; |
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for(int i = 0; i < max.length; i++) |
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m = Math.max(m, max[i]);
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return m;
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} |
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/*
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* (non-Javadoc)
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* @see org.gvsig.fmap.driver.IStatistics#getMinimun()
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*/
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public double getMinimun(){ |
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double m = Double.MAX_VALUE; |
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for(int i = 0; i < min.length; i++) |
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m = Math.min(m, min[i]);
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return m;
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} |
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/*
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* (non-Javadoc)
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* @see org.gvsig.fmap.driver.IStatistics#getMean()
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*/
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public double[] getMean() { |
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return mean;
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} |
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/*
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* (non-Javadoc)
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* @see org.gvsig.fmap.driver.IStatistics#getVariance()
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*/
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public double[] getVariance() { |
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return variance;
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} |
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/*
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* (non-Javadoc)
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* @see org.gvsig.fmap.driver.IStatistics#getBandCount()
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*/
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public int getBandCount(){ |
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return this.bandCount; |
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} |
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/**
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* Asigna el n?mero de bandas
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* @param bandCount
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*/
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public void setBandCount(int bandCount) { |
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this.bandCount = bandCount;
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} |
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/**
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* Intenta cargar las estadisticas desde el RMF. Para saber si las ha podido
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* cargar, se puede consultar despues con isCalculated()
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* @return
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*/
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public void loadStatisticsFromRmf() { |
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calculated = false;
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if (dataset == null) |
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return;
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try {
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loadFromRmf(dataset.getRmfBlocksManager()); |
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} catch (ParsingException e) {
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// No lee desde rmf
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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.driver.IStatistics#calcFullStatistics()
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*/
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public void calcFullStatistics() |
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throws FileNotOpenException, RasterDriverException, InterruptedException { |
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RasterTask task = RasterTaskQueue.get(Thread.currentThread().toString());
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percent = 0;
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if(dataset != null && !forceToRecalc) { |
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if (!isCalculated())
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loadStatisticsFromRmf(); |
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if (isCalculated())
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return;
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} |
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if(dataset != null) |
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bandCount = dataset.getBandCount(); |
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// long t2, p1, p2;
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// long t1 = new Date().getTime();
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max = new double[bandCount]; |
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min = new double[bandCount]; |
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secondMax = new double[bandCount]; |
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secondMin = new double[bandCount]; |
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maxRGB = new double[bandCount]; |
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minRGB = new double[bandCount]; |
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secondMaxRGB = new double[bandCount]; |
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secondMinRGB = new double[bandCount]; |
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mean = new double[bandCount]; |
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variance = new double[bandCount]; |
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long[] iValues = new long[bandCount]; |
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boolean[] init = new boolean[bandCount]; |
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int[] type = new int[bandCount]; |
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byte[][][] b = null; |
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short[][][] s = null; |
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int[][][] i = null; |
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float[][][] f = null; |
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double[][][] d = null; |
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for (int iBand = 0; iBand < bandCount; iBand ++) { |
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max[iBand] = Double.NEGATIVE_INFINITY;
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min[iBand] = Double.POSITIVE_INFINITY;
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secondMax[iBand] = Double.NEGATIVE_INFINITY;
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secondMin[iBand] = Double.POSITIVE_INFINITY;
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maxRGB[iBand] = 0;
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minRGB[iBand] = 255;
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secondMaxRGB[iBand] = 0;
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secondMinRGB[iBand] = 255;
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init[iBand] = true;
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type[iBand] = dataset.getDataType()[iBand]; |
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if(task.getEvent() != null) |
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task.manageEvent(task.getEvent()); |
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} |
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int h = RasterLibrary.blockHeight;
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for (int block = 0; block < dataset.getHeight(); block += h) { |
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// p1 = new Date().getTime();
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Object buf = null; |
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try {
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buf = dataset.readBlock(block, RasterLibrary.blockHeight); |
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} catch (InvalidSetViewException e) {
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//La vista se asigna autom?ticamente
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} |
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switch(type[0]){ |
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case IBuffer.TYPE_BYTE: b = (byte[][][])buf;break; |
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case IBuffer.TYPE_SHORT: s = (short[][][])buf;break; |
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case IBuffer.TYPE_INT: i = (int[][][])buf;break; |
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case IBuffer.TYPE_FLOAT: f = (float[][][])buf;break; |
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case IBuffer.TYPE_DOUBLE: d = (double[][][])buf;break; |
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} |
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int hB = RasterLibrary.blockHeight;
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if((block + hB) > dataset.getHeight())
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hB = Math.abs(dataset.getHeight() - block);
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for (int iBand = 0; iBand < bandCount; iBand ++) { |
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for (int col = 0; col < dataset.getWidth(); col ++) { |
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for (int row = 0; row < hB; row++) { |
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double z = (b != null) ? b[iBand][row][col] : ((s != null) ? s[iBand][row][col] : ((i != null) ? i[iBand][row][col]: (f != null) ? f[iBand][row][col] : d[iBand][row][col])); |
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if (z == dataset.getNoDataValue())
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continue;
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if (Double.isNaN(z)) |
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continue;
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//if(z < 0)
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//System.out.println("");
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double rgb = (b != null) ? (b[iBand][row][col] & 0xff) : 0; |
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if (init[iBand]) {
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min[iBand] = z; |
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max[iBand] = z; |
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minRGB[iBand] = rgb; |
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maxRGB[iBand] = rgb; |
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init[iBand] = false;
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} else {
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if ( min[iBand] > z ) {
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secondMin[iBand] = min[iBand]; |
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min[iBand] = z; |
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} |
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if ( minRGB[iBand] > rgb ) {
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secondMinRGB[iBand] = minRGB[iBand]; |
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minRGB[iBand] = rgb; |
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} |
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if ( max[iBand] < z ) {
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secondMax[iBand] = max[iBand]; |
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max[iBand] = z; |
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} |
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if ( maxRGB[iBand] < rgb ) {
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secondMaxRGB[iBand] = maxRGB[iBand]; |
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maxRGB[iBand] = rgb; |
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} |
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if(z < max[iBand] && z > secondMax[iBand])
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secondMax[iBand] = z; |
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if(z > min[iBand] && z < secondMin[iBand])
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secondMin[iBand] = z; |
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if(rgb < maxRGB[iBand] && rgb > secondMaxRGB[iBand])
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secondMaxRGB[iBand] = rgb; |
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if(rgb > minRGB[iBand] && rgb < secondMinRGB[iBand])
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secondMinRGB[iBand] = rgb; |
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} |
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mean[iBand] += z; |
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variance[iBand] += z * z; |
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iValues[iBand]++; |
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} |
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if(task.getEvent() != null) |
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task.manageEvent(task.getEvent()); |
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} |
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} |
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percent += ((h * 100) / dataset.getHeight());
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// p2 = new Date().getTime();
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//System.out.println("Time (Statistics) " + block + ": " + ((p2 - p1) / 1000D) + ", secs.");
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} |
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percent = 100;
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for (int iBand = 0; iBand < bandCount; iBand ++) { |
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if( iValues[iBand] > 0 ) { |
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mean[iBand] /= (double) iValues[iBand];
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variance[iBand] = variance[iBand] / (double) iValues[iBand] - mean[iBand] * mean[iBand];
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} |
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if(task.getEvent() != null) |
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task.manageEvent(task.getEvent()); |
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} |
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calculated = true;
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// t2 = new Date().getTime();
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//System.out.println("Estadisticas " + dataset.getFName() + ": " + ((t2 - t1) / 1000D) + ", secs.");
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if (dataset != null) { |
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try {
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saveToRmf(dataset.getRmfBlocksManager()); |
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forceToRecalc = false;
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} catch (IOException e) { |
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// No salva a rmf
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} |
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} |
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} |
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/**
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* Carga estadisticas desde el fichero Rmf si las hay.
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* @param fName Nombre del fichero
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* @throws ParsingException
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*/
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public void loadFromRmf(RmfBlocksManager manager) throws ParsingException { |
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StatisticsRmfSerializer ser = new StatisticsRmfSerializer(this); |
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if(!manager.checkRmf())
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return;
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if(!new File(manager.getPath()).exists()) |
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return;
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manager.addClient(ser); |
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manager.read(null);
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manager.removeClient(ser.getClass()); |
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} |
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/**
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* Salva estad?sticas a fichero rmf.
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* @param fName
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* @throws IOException
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*/
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public void saveToRmf(RmfBlocksManager manager) throws IOException { |
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StatisticsRmfSerializer ser = new StatisticsRmfSerializer(this); |
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if(!manager.checkRmf())
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return;
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manager.addClient(ser); |
| 492 |
RasterUtilities.copyFile(manager.getPath(), manager.getPath() + "~");
|
| 493 |
manager.write(); |
| 494 |
manager.removeClient(ser.getClass()); |
| 495 |
} |
| 496 |
|
| 497 |
/*
|
| 498 |
* (non-Javadoc)
|
| 499 |
* @see org.gvsig.fmap.driver.IStatistics#isCalculated()
|
| 500 |
*/
|
| 501 |
public boolean isCalculated() { |
| 502 |
return calculated;
|
| 503 |
} |
| 504 |
|
| 505 |
/**
|
| 506 |
* Asigna el flag de estad?sticas calculadas.
|
| 507 |
* @param calc
|
| 508 |
*/
|
| 509 |
public void setCalculated(boolean calc) { |
| 510 |
calculated = calc; |
| 511 |
} |
| 512 |
|
| 513 |
/*
|
| 514 |
* (non-Javadoc)
|
| 515 |
* @see org.gvsig.fmap.driver.IStatistics#setTailTrimValue(double, java.lang.Object)
|
| 516 |
*/
|
| 517 |
public void setTailTrimValue(double percent, Object valueByBand){ |
| 518 |
tailTrim.put(percent + "", valueByBand);
|
| 519 |
for (int i = 0; i < tailTrimValues.size(); i++) { |
| 520 |
if(tailTrimValues.get(i).equals(percent + "")) { |
| 521 |
tailTrimValues.set(i, percent + "");
|
| 522 |
return;
|
| 523 |
} |
| 524 |
} |
| 525 |
tailTrimValues.add(percent + "");
|
| 526 |
} |
| 527 |
|
| 528 |
/*
|
| 529 |
* (non-Javadoc)
|
| 530 |
* @see org.gvsig.fmap.driver.IStatistics#getTailTrimValue(double)
|
| 531 |
*/
|
| 532 |
public Object getTailTrimValue(double percent){ |
| 533 |
return tailTrim.get(percent + ""); |
| 534 |
} |
| 535 |
|
| 536 |
/*
|
| 537 |
* (non-Javadoc)
|
| 538 |
* @see org.gvsig.raster.shared.IStatistics#getTailTrimValue(int)
|
| 539 |
*/
|
| 540 |
public Object[] getTailTrimValue(int pos) { |
| 541 |
return new Object[]{tailTrimValues.get(pos), tailTrim.get((Double)tailTrimValues.get(pos))}; |
| 542 |
} |
| 543 |
|
| 544 |
/*
|
| 545 |
* (non-Javadoc)
|
| 546 |
* @see org.gvsig.raster.shared.IStatistics#getTailTrimCount()
|
| 547 |
*/
|
| 548 |
public int getTailTrimCount() { |
| 549 |
return tailTrimValues.size();
|
| 550 |
} |
| 551 |
|
| 552 |
/**
|
| 553 |
* Pone a cero el porcentaje de progreso del proceso de calculo de histograma
|
| 554 |
*/
|
| 555 |
public void resetPercent() { |
| 556 |
percent = 0;
|
| 557 |
} |
| 558 |
|
| 559 |
/**
|
| 560 |
* Obtiene el porcentaje de progreso del proceso de calculo de histograma
|
| 561 |
* @return porcentaje de progreso
|
| 562 |
*/
|
| 563 |
public int getPercent() { |
| 564 |
return percent;
|
| 565 |
} |
| 566 |
|
| 567 |
/**
|
| 568 |
* Cuando se llama a este m?todo fuerza que la siguiente petici?n de estad?sticas
|
| 569 |
* no sea le?da de RMF y sean recalculadas por completo.
|
| 570 |
* @param forceToRecalc
|
| 571 |
*/
|
| 572 |
public void forceToRecalc() { |
| 573 |
this.forceToRecalc = true; |
| 574 |
} |
| 575 |
} |