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 / MosaicDataStoreHistogram.java @ 186
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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 org.gvsig.fmap.dal.coverage.datastruct.BufferHistogram; |
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import org.gvsig.fmap.dal.coverage.exception.FileNotOpenException; |
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import org.gvsig.fmap.dal.coverage.exception.HistogramException; |
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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.store.RasterDataStore; |
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import org.gvsig.fmap.dal.coverage.store.props.Histogram; |
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import org.gvsig.fmap.dal.coverage.store.props.Statistics; |
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import org.gvsig.raster.impl.datastruct.BufferHistogramImpl; |
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/**
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* Clase para la gesti?n de histogramas de un raster formado por una lista de ficheros.
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* Para devolver un histograma pedir? el histograma a todos los ficheros que
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* componen el multifichero.
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*
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* @author Nacho Brodin (nachobrodin@gmail.com)
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*/
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public class MosaicDataStoreHistogram implements Histogram { |
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/**
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* Histograma de la imagen completa
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*/
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private BufferHistogram histogram = null; |
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private Histogram[] multihistog = null; |
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private RasterDataStore dataset = null; |
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/**
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* Constructor
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* @param dataset
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*/
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public MosaicDataStoreHistogram(Histogram[] h, RasterDataStore dataset){ |
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this.multihistog = h;
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this.dataset = dataset;
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} |
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/**
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* Gets the histogram. Builds the histogram of each dataset and join these
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* @return histograma
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*/
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public BufferHistogram getBufferHistogram()
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throws HistogramException, ProcessInterruptedException {
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if(histogram == null) { |
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BufferHistogram[] pres = new BufferHistogram[multihistog.length]; |
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for (int i = 0; i < multihistog.length; i++) { |
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pres[i] = multihistog[i].getBufferHistogram(); |
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} |
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Statistics stats = ((RasterDataStore)dataset).getStatistics(); |
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try {
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stats.calculate(); |
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} catch (FileNotOpenException e) {
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throw new HistogramException(""); |
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} catch (RasterDriverException e) {
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throw new HistogramException(""); |
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} |
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BufferHistogram res = new BufferHistogramImpl(((RasterDataStore)dataset).getBandCount(), stats.getMin(), stats.getMax(), ((RasterDataStore)dataset).getDataType()[0]); |
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for (int i = 0; i < multihistog.length; i++) |
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res.union(pres[i]); |
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} |
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return histogram;
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} |
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/**
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* Pone a cero el porcentaje de progreso del proceso de calculo de histograma
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*/
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public void resetPercent() { |
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for (int i = 0; i < multihistog.length; i++) |
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multihistog[i].resetPercent(); |
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} |
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/**
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* Obtiene el porcentaje de proceso en la construcci?n del histograma,
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* @return porcentaje de progreso
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*/
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public int getPercent() { |
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//TODO: Calculo del porcentaje
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return 100; |
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} |
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/*
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* (non-Javadoc)
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* @see org.gvsig.fmap.dal.coverage.dataset.Histogram#getMaximum()
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*/
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public double getMaximum() { |
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double max = 0; |
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try {
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for (int i = 0; i < getBufferHistogram().getNumBands(); i++) { |
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double m = getBufferHistogram().getMax(i);
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if(m > max)
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max = m; |
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} |
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} catch (HistogramException e) {
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return 0; |
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} catch (ProcessInterruptedException e) {
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return 0; |
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} |
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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.dal.coverage.dataset.Histogram#getMinimum()
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*/
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public double getMinimum() { |
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double min = Double.POSITIVE_INFINITY; |
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try {
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for (int i = 0; i < getBufferHistogram().getNumBands(); i++) { |
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double m = getBufferHistogram().getMin(i);
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if(m < min)
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min = m; |
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} |
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} catch (HistogramException e) {
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return 0; |
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} catch (ProcessInterruptedException e) {
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return 0; |
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} |
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return min;
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} |
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} |