root / trunk / libraries / libRaster / src / org / gvsig / raster / dataset / properties / DatasetListHistogram.java @ 11067
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| 1 | 10939 | nacho | /* gvSIG. Sistema de Informaci?n Geogr?fica de la Generalitat Valenciana
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| 2 | *
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| 3 | * Copyright (C) 2007 IVER T.I. and Generalitat Valenciana.
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| 4 | *
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| 5 | * This program is free software; you can redistribute it and/or
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| 6 | * modify it under the terms of the GNU General Public License
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| 7 | * as published by the Free Software Foundation; either version 2
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| 8 | * of the License, or (at your option) any later version.
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| 9 | *
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| 10 | * This program is distributed in the hope that it will be useful,
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| 11 | * but WITHOUT ANY WARRANTY; without even the implied warranty of
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| 12 | * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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| 13 | * GNU General Public License for more details.
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| 14 | *
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| 15 | * You should have received a copy of the GNU General Public License
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| 16 | * along with this program; if not, write to the Free Software
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| 17 | * Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307,USA.
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| 18 | */
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| 19 | package org.gvsig.raster.dataset.properties; |
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| 20 | |||
| 21 | import org.gvsig.raster.dataset.FileNotOpenException; |
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| 22 | import org.gvsig.raster.dataset.RasterDriverException; |
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| 23 | import org.gvsig.raster.dataset.RasterMultiDataset; |
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| 24 | import org.gvsig.raster.util.DataClassList; |
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| 25 | import org.gvsig.raster.util.Histogram; |
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| 26 | |||
| 27 | /**
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| 28 | * Clase para la gesti?n de histogramas de un raster formado por una lista de ficheros.
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| 29 | * Para devolver un histograma pedir? el histograma a todos los ficheros que
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| 30 | * componen el multifichero.
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| 31 | *
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| 32 | * @author Nacho Brodin (nachobrodin@gmail.com)
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| 33 | */
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| 34 | public class DatasetListHistogram { |
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| 35 | /**
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| 36 | * clases en las que se divide el histograma
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| 37 | */
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| 38 | 11067 | bsanchez | private DataClassList classes = null; |
| 39 | 10996 | bsanchez | |
| 40 | 10939 | nacho | /**
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| 41 | * Histograma de la imagen completa
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| 42 | */
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| 43 | 11067 | bsanchez | private Histogram histogram = null; |
| 44 | 10939 | nacho | /**
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| 45 | * Dataset del cual se calcula el histograma
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| 46 | */
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| 47 | 11067 | bsanchez | private RasterMultiDataset multiDataset = null; |
| 48 | 10939 | nacho | |
| 49 | /**
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| 50 | 11067 | bsanchez | * Variable para saber si se ha parado el proceso
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| 51 | */
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| 52 | private boolean canceled = false; |
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| 53 | |||
| 54 | /**
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| 55 | 10939 | nacho | * Constructor
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| 56 | * @param dataset
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| 57 | */
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| 58 | public DatasetListHistogram(RasterMultiDataset dataset){
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| 59 | this.multiDataset = dataset;
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| 60 | } |
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| 61 | |||
| 62 | /**
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| 63 | * Asigna una lista de clases sobre la que se calcular? la petici?n de
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| 64 | * histograma.
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| 65 | * @param classes
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| 66 | */
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| 67 | public void setClasses(DataClassList classes){ |
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| 68 | this.classes = classes;
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| 69 | for (int iDataset = 0; iDataset < multiDataset.getDatasetCount(); iDataset++) |
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| 70 | multiDataset.getDataset(iDataset).getHistogram().setClasses(classes); |
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| 71 | } |
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| 72 | |||
| 73 | /**
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| 74 | * Obtiene el histograma. Pregunta a todos los datasets que forman el multidataset
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| 75 | * por su histograma y luego los fusiona.
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| 76 | * @return histograma
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| 77 | */
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| 78 | public Histogram getHistogram()throws FileNotOpenException, RasterDriverException{ |
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| 79 | if(multiDataset != null){ |
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| 80 | //Obtenemos los histogramas de cada dataset
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| 81 | int nBands = 0; |
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| 82 | Histogram[] hList = new Histogram[multiDataset.getDatasetCount()]; |
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| 83 | for (int i = 0; i < hList.length; i++) { |
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| 84 | 11067 | bsanchez | if (canceled) return null; |
| 85 | 10939 | nacho | multiDataset.getDataset(i).getHistogram().setClasses(classes); |
| 86 | hList[i] = multiDataset.getDataset(i).getHistogram().getHistogram(); |
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| 87 | nBands += hList[i].getNumBands(); |
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| 88 | } |
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| 89 | |||
| 90 | if(hList[0].getNumBands() == 0) |
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| 91 | return null; |
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| 92 | |||
| 93 | histogram = new Histogram(nBands, hList[0].getNumValues()); |
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| 94 | //histogram = new long[nBands][hList[0][0].length];
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| 95 | int band = 0; |
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| 96 | for (int iDataset = 0; iDataset < hList.length; iDataset++) { |
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| 97 | for (int iBand = 0; iBand < hList[iDataset].getNumBands(); iBand++) { |
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| 98 | for (int iPxValue = 0; iPxValue < hList[iDataset].getBandLenght(iBand); iPxValue ++) { |
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| 99 | 11067 | bsanchez | if (isCanceled()) return null; |
| 100 | 10939 | nacho | histogram.setHistogramValue(band, iPxValue, hList[iDataset].getHistogramValue(iBand, iPxValue)); |
| 101 | } |
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| 102 | band ++; |
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| 103 | } |
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| 104 | } |
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| 105 | |||
| 106 | return histogram;
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| 107 | } |
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| 108 | return null; |
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| 109 | } |
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| 110 | 11065 | bsanchez | |
| 111 | public void resetPercent() { |
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| 112 | for (int i = 0; i < multiDataset.getDatasetCount(); i++) { |
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| 113 | multiDataset.getDataset(i).resetPercent(); |
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| 114 | } |
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| 115 | } |
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| 116 | |||
| 117 | 10996 | bsanchez | public int getPercent() { |
| 118 | int percent = 0; |
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| 119 | for (int i = 0; i < multiDataset.getDatasetCount(); i++) { |
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| 120 | percent += multiDataset.getDataset(i).getPercent(); |
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| 121 | } |
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| 122 | percent = percent / multiDataset.getDatasetCount(); |
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| 123 | return percent;
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| 124 | } |
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| 125 | 11067 | bsanchez | |
| 126 | /**
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| 127 | * Metodo para poder cancelar el proceso.
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| 128 | */
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| 129 | public void cancel() { |
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| 130 | canceled = true;
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| 131 | } |
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| 132 | |||
| 133 | /**
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| 134 | * Metodo para saber si se ha cancelado un proceso
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| 135 | * @return boolean
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| 136 | */
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| 137 | public boolean isCanceled() { |
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| 138 | return canceled;
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| 139 | } |
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| 140 | 10939 | nacho | } |