svn-gvsig-desktop / trunk / libraries / libRaster / src-test / org / gvsig / raster / buffer / TestGdalFloatHistogram.java @ 11183
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1 | 11113 | 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.buffer; |
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20 | |||
21 | import junit.framework.TestCase; |
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22 | |||
23 | import org.gvsig.raster.RasterLibrary; |
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24 | import org.gvsig.raster.dataset.IBuffer; |
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25 | import org.gvsig.raster.dataset.NotSupportedExtensionException; |
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26 | import org.gvsig.raster.dataset.RasterDataset; |
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27 | import org.gvsig.raster.dataset.RasterDriverException; |
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28 | import org.gvsig.raster.dataset.RasterMultiDataset; |
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29 | import org.gvsig.raster.util.Histogram; |
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30 | |||
31 | /**
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32 | * Test a un histograma usando clases. El test se realiza sobre un raster en
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33 | * coma flotante de 28x25 pixels. Se crean clases de tres tipo de intervalos distintos y
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34 | * se testean los valores obtenidos en el histograma resultante. El ?ltimo
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35 | * test comprueba la generaci?n autom?tica de clases.
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36 | *
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37 | * @author Nacho Brodin (nachobrodin@gmail.com)
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38 | */
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39 | public class TestGdalFloatHistogram extends TestCase { |
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40 | |||
41 | private String baseDir = "./test-images/"; |
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42 | private String path = baseDir + "miniRaster28x25F32.tif"; |
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43 | private RasterDataset f = null; |
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44 | private BufferFactory ds = null; |
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45 | |||
46 | public void start() { |
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47 | this.setUp();
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48 | this.testStack();
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49 | } |
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50 | |||
51 | public void setUp() { |
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52 | System.err.println("TestGdalFloatHistogram running..."); |
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53 | } |
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54 | |||
55 | static{
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56 | RasterLibrary.wakeUp(); |
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57 | } |
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58 | |||
59 | public void testStack() { |
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60 | int[] drawableBands = {0, 1, 2}; |
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61 | try {
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62 | f = RasterDataset.open(null, path);
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63 | } catch (NotSupportedExtensionException e) {
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64 | return;
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65 | } catch (RasterDriverException e) {
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66 | return;
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67 | } |
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68 | ds = new BufferFactory(f);
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69 | ds.addDrawableBands(drawableBands); |
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70 | ds.setAreaOfInterest(0, 0, 28, 25); |
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71 | //printData();
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72 | |||
73 | Histogram histogram = null;
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74 | RasterMultiDataset rmd = ds.getGeoRasterMultiFile(); |
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75 | |||
76 | /*try {
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77 | histogram = rmd.getHistogram();
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78 | } catch (HistogramException e) {
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79 | e.printStackTrace();
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80 | }*/
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81 | //testHist1(histogram);
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82 | |||
83 | } |
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84 | |||
85 | private void testHist1(Histogram histogram) { |
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86 | assertEquals(histogram.getHistogramValue(0, 0), 0); |
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87 | assertEquals(histogram.getHistogramValue(0, 1), 700); |
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88 | } |
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89 | |||
90 | private void testHist2(Histogram histogram) { |
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91 | assertEquals(histogram.getHistogramValue(0, 0), 180); |
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92 | assertEquals(histogram.getHistogramValue(0, 1), 520); |
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93 | } |
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94 | |||
95 | private void testHist3(Histogram histogram) { |
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96 | assertEquals(histogram.getHistogramValue(0, 0), 4); |
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97 | assertEquals(histogram.getHistogramValue(0, 1), 38); |
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98 | assertEquals(histogram.getHistogramValue(0, 2), 138); |
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99 | assertEquals(histogram.getHistogramValue(0, 3), 100); |
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100 | assertEquals(histogram.getHistogramValue(0, 4), 420); |
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101 | } |
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102 | |||
103 | private void testHist4(Histogram histogram) { |
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104 | assertEquals(histogram.getHistogramValue(0, 0), 10); |
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105 | assertEquals(histogram.getHistogramValue(0, 1), 17); |
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106 | assertEquals(histogram.getHistogramValue(0, 2), 36); |
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107 | assertEquals(histogram.getHistogramValue(0, 3), 72); |
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108 | assertEquals(histogram.getHistogramValue(0, 4), 119); |
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109 | assertEquals(histogram.getHistogramValue(0, 5), 129); |
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110 | assertEquals(histogram.getHistogramValue(0, 6), 98); |
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111 | assertEquals(histogram.getHistogramValue(0, 7), 93); |
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112 | assertEquals(histogram.getHistogramValue(0, 8), 76); |
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113 | assertEquals(histogram.getHistogramValue(0, 9), 49); |
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114 | } |
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115 | |||
116 | private void print(Histogram histogram) { |
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117 | for (int i = 0; i < histogram.getNumBands(); i++) { |
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118 | for (int j = 0; j < histogram.getBandLenght(i); j++) { |
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119 | System.out.print(histogram.getHistogramValue(i, j) + " "); |
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120 | } |
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121 | System.out.println(""); |
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122 | } |
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123 | } |
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124 | |||
125 | /**
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126 | * Imprime todos los pixels de la fuente de datos en RGB
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127 | */
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128 | private void printData() { |
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129 | IBuffer raster = ds.getRasterBuf(); |
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130 | for(int line = 0; line < raster.getHeight(); line++) { |
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131 | for(int col = 0; col < raster.getWidth(); col++) |
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132 | System.out.print("(" + raster.getElemFloat(line, col, 0) + ")"); |
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133 | System.out.println();
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134 | } |
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135 | } |
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136 | } |