root / trunk / libraries / libRaster / src / org / gvsig / raster / dataset / properties / DatasetListHistogram.java @ 11065
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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.IBuffer; |
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23 | import org.gvsig.raster.dataset.RasterDataset; |
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24 | import org.gvsig.raster.dataset.RasterDriverException; |
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25 | import org.gvsig.raster.dataset.RasterMultiDataset; |
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26 | import org.gvsig.raster.util.DataClassList; |
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27 | import org.gvsig.raster.util.Histogram; |
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28 | |||
29 | /**
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30 | * Clase para la gesti?n de histogramas de un raster formado por una lista de ficheros.
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31 | * Para devolver un histograma pedir? el histograma a todos los ficheros que
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32 | * componen el multifichero.
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33 | *
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34 | * @author Nacho Brodin (nachobrodin@gmail.com)
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35 | */
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36 | public class DatasetListHistogram { |
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37 | /**
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38 | * clases en las que se divide el histograma
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39 | */
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40 | private DataClassList classes = null; |
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41 | 10996 | bsanchez | |
42 | 10939 | nacho | /**
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43 | * Histograma de la imagen completa
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44 | */
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45 | private Histogram histogram = null; |
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46 | /**
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47 | * Dataset del cual se calcula el histograma
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48 | */
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49 | private RasterMultiDataset multiDataset = null; |
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50 | |||
51 | /**
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52 | * Constructor
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53 | * @param dataset
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54 | */
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55 | public DatasetListHistogram(RasterMultiDataset dataset){
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56 | this.multiDataset = dataset;
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57 | } |
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58 | |||
59 | /**
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60 | * Asigna una lista de clases sobre la que se calcular? la petici?n de
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61 | * histograma.
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62 | * @param classes
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63 | */
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64 | public void setClasses(DataClassList classes){ |
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65 | this.classes = classes;
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66 | for (int iDataset = 0; iDataset < multiDataset.getDatasetCount(); iDataset++) |
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67 | multiDataset.getDataset(iDataset).getHistogram().setClasses(classes); |
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68 | } |
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69 | |||
70 | /**
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71 | * Obtiene el histograma. Pregunta a todos los datasets que forman el multidataset
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72 | * por su histograma y luego los fusiona.
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73 | * @return histograma
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74 | */
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75 | public Histogram getHistogram()throws FileNotOpenException, RasterDriverException{ |
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76 | if(multiDataset != null){ |
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77 | //Obtenemos los histogramas de cada dataset
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78 | int nBands = 0; |
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79 | Histogram[] hList = new Histogram[multiDataset.getDatasetCount()]; |
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80 | for (int i = 0; i < hList.length; i++) { |
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81 | multiDataset.getDataset(i).getHistogram().setClasses(classes); |
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82 | hList[i] = multiDataset.getDataset(i).getHistogram().getHistogram(); |
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83 | nBands += hList[i].getNumBands(); |
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84 | } |
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85 | |||
86 | if(hList[0].getNumBands() == 0) |
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87 | return null; |
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88 | |||
89 | histogram = new Histogram(nBands, hList[0].getNumValues()); |
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90 | //histogram = new long[nBands][hList[0][0].length];
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91 | int band = 0; |
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92 | for (int iDataset = 0; iDataset < hList.length; iDataset++) { |
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93 | for (int iBand = 0; iBand < hList[iDataset].getNumBands(); iBand++) { |
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94 | for (int iPxValue = 0; iPxValue < hList[iDataset].getBandLenght(iBand); iPxValue ++) { |
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95 | histogram.setHistogramValue(band, iPxValue, hList[iDataset].getHistogramValue(iBand, iPxValue)); |
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96 | } |
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97 | band ++; |
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98 | } |
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99 | } |
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100 | |||
101 | return histogram;
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102 | } |
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103 | return null; |
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104 | } |
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105 | 11065 | bsanchez | |
106 | public void resetPercent() { |
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107 | for (int i = 0; i < multiDataset.getDatasetCount(); i++) { |
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108 | multiDataset.getDataset(i).resetPercent(); |
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109 | } |
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110 | } |
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111 | |||
112 | 10996 | bsanchez | public int getPercent() { |
113 | int percent = 0; |
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114 | for (int i = 0; i < multiDataset.getDatasetCount(); i++) { |
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115 | percent += multiDataset.getDataset(i).getPercent(); |
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116 | } |
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117 | percent = percent / multiDataset.getDatasetCount(); |
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118 | return percent;
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119 | } |
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120 | 10939 | nacho | } |