gvsig-raster / org.gvsig.raster / trunk / org.gvsig.raster / org.gvsig.raster.lib / org.gvsig.raster.lib.impl / src / main / java / org / gvsig / raster / impl / store / properties / MultiProviderStatistics.java @ 8703
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/* gvSIG. Geographic Information System of the Valencian Government
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*
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* Copyright (C) 2007-2008 Infrastructures and Transports Department
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* of the Valencian Government (CIT)
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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., 51 Franklin Street, Fifth Floor, Boston,
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* MA 02110-1301, USA.
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*
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*/
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package org.gvsig.raster.impl.store.properties; |
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import java.util.List; |
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import org.gvsig.fmap.dal.coverage.RasterLibrary; |
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import org.gvsig.fmap.dal.coverage.exception.FileNotOpenException; |
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import org.gvsig.fmap.dal.coverage.exception.ProcessInterruptedException; |
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import org.gvsig.fmap.dal.coverage.exception.RasterDriverException; |
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import org.gvsig.fmap.dal.coverage.exception.RmfSerializerException; |
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import org.gvsig.fmap.dal.coverage.store.props.Statistics; |
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import org.gvsig.raster.impl.provider.RasterProvider; |
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/**
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* Estadisticas asociadas a un fichero raster formado por multiples ficheros.
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*
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* @author Nacho Brodin (nachobrodin@gmail.com)
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*/
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public class MultiProviderStatistics extends AbstractStatistics { |
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protected Statistics[] statList = null; |
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protected int nBands = 0; |
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protected boolean forceToRecalc = false; |
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protected RasterProvider provider = null; |
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/**
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* Constructor
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*/
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public MultiProviderStatistics() {
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} |
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/**
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* Constructor
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*/
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public MultiProviderStatistics(List<RasterProvider> providerList, RasterProvider provider) { |
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this(providerList);
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this.provider = provider;
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} |
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/**
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* Constructor
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*/
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@SuppressWarnings("unused") |
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private MultiProviderStatistics(RasterProvider[] providerList) { |
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statList = new Statistics[providerList.length];
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for(int i = 0; i < providerList.length; i ++) { |
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statList[i] = providerList[i].getStatistics(); |
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this.nBands += providerList[i].getBandCount();
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} |
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} |
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/**
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* Constructor
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*/
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private MultiProviderStatistics(List<RasterProvider> providerList) { |
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statList = new Statistics[providerList.size()];
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for(int i = 0; i < providerList.size(); i ++) { |
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if(providerList.get(i) != null) { |
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statList[i] = providerList.get(i).getStatistics(); |
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this.nBands += providerList.get(i).getBandCount();
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} |
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} |
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} |
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/**
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* Constructor
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*/
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@SuppressWarnings("unused") |
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private MultiProviderStatistics(Statistics[] statList, int nBands) { |
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this.nBands = nBands;
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this.statList = statList;
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for(int nDataset = 0; nDataset < statList.length; nDataset ++) { |
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try {
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statList[nDataset].calculate(RasterLibrary.statisticsScale); |
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} catch (FileNotOpenException e) {
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} catch (RasterDriverException e) {
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} catch (ProcessInterruptedException e) {
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} |
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} |
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constructStats(nBands); |
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} |
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/**
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* Adds a new data store to the statistics list
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* @param provider
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*/
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public void addProvider(RasterProvider provider) { |
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Statistics[] statListAux = new Statistics[statList.length + 1]; |
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for(int i = 0; i < statList.length; i ++) { |
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statListAux[i] = statList[i]; |
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} |
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statListAux[statList.length] = provider.getStatistics(); |
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statList = statListAux; |
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} |
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/**
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* Calcula las estadisticas recorriendo todo el fichero.
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*/
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public void calculate(double scale)throws FileNotOpenException, RasterDriverException, ProcessInterruptedException { |
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if (!forceToRecalc) {
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if (!isCalculated()) {
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try {
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provider.loadObjectFromRmf(SimpleProviderStatistics.class, this);
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} catch (RmfSerializerException e) {
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// Si no se puede cargar del RMF, recalcularemos las estadisticas.
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} |
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} |
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if (isCalculated())
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return;
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} |
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for(int nDataset = 0; nDataset < statList.length; nDataset ++) { |
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if(forceToRecalc)
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statList[nDataset].forceToRecalc(); |
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statList[nDataset].calculate(scale); |
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} |
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try {
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constructStats(nBands); |
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} catch (ArrayIndexOutOfBoundsException e) { |
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throw new RasterDriverException("Error en el acceso al array de m?ximos y m?nimos"); |
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} |
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calculated = true;
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forceToRecalc = false;
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try {
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provider.saveObjectToRmf(Statistics.class, this);
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} catch (RmfSerializerException e) {
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// No salva a rmf
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} |
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} |
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public void resetPercent() { |
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for (int i = 0; i < statList.length; i++) { |
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statList[i].resetPercent(); |
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} |
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} |
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public int getPercent() { |
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int sum = 0; |
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for (int i = 0; i < statList.length; i++) { |
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sum += statList[i].getPercent(); |
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} |
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return sum / statList.length;
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} |
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public void forceToRecalc() { |
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this.forceToRecalc = true; |
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} |
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/**
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* Construye todos los datos del DatasetStadistics actual a partir de toda la
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* lista de DatasetStatistics que tiene este objeto.
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*
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* @param len
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* @throws ArrayIndexOutOfBoundsException
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*/
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private void constructStats(int len) throws ArrayIndexOutOfBoundsException { |
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max = new double[len]; |
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min = new double[len]; |
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secondMax = new double[len]; |
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secondMin = new double[len]; |
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maxByteUnsigned = new double[len]; |
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minByteUnsigned = new double[len]; |
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secondMaxByteUnsigned = new double[len]; |
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secondMinByteUnsigned = new double[len]; |
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mean = new double[len]; |
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variance = new double[len]; |
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nValues = new long[len]; |
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int count = 0; |
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for(int i = 0; i < statList.length; i ++) { |
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if(statList[i].getMax() == null) |
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return;
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for(int j = 0; j < statList[i].getMax().length; j ++) { |
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max[count] = statList[i].getMax()[j]; |
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min[count] = statList[i].getMin()[j]; |
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secondMax[count] = statList[i].getSecondMax()[j]; |
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secondMin[count] = statList[i].getSecondMin()[j]; |
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maxByteUnsigned[count] = statList[i].getMaxByteUnsigned()[j]; |
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minByteUnsigned[count] = statList[i].getMinByteUnsigned()[j]; |
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secondMaxByteUnsigned[count] = statList[i].getSecondMaxByteUnsigned()[j]; |
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secondMinByteUnsigned[count] = statList[i].getSecondMinByteUnsigned()[j]; |
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mean[count] = statList[i].getMean()[j]; |
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variance[count] = statList[i].getVariance()[j]; |
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nValues[count] = statList[i].getNumberOfValues()[j]; |
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count ++; |
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} |
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} |
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} |
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/**
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* Obtiene el flag que informa de si las estad?sticas est?n calculadas o no.
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* @return true indica que est?n calculadas y false que no lo est?n
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*/
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public boolean isCalculated() { |
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return calculated;
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} |
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public int getBandCount() { |
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if(bandCount <= 0) { |
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for(int i = 0; i < statList.length; i ++) |
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bandCount += statList[i].getBandCount(); |
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} |
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return 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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* Returns the number of providers.
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* @return
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*/
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public int getNumberOfProviders() { |
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return statList != null ? statList.length :0; |
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} |
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public Statistics cloneStatistics() {
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MultiProviderStatistics s = new MultiProviderStatistics();
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s.statList = statList; |
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s.nBands = nBands; |
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return super.cloneStatistics(s); |
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} |
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} |