root / trunk / libraries / libRaster / src-test / org / gvsig / raster / driver / TestStatistics.java @ 11067
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/*
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* Created on 9-ago-2006
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*
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* To change the template for this generated file go to
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* Window>Preferences>Java>Code Generation>Code and Comments
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*/
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/* gvSIG. Sistema de Informaci?n Geogr?fica de la Generalitat Valenciana
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*
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* Copyright (C) 2004 IVER T.I. and Generalitat Valenciana.
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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., 59 Temple Place - Suite 330, Boston, MA 02111-1307,USA.
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*/
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package org.gvsig.raster.driver; |
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import junit.framework.TestCase; |
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import org.gvsig.raster.RasterLibrary; |
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import org.gvsig.raster.dataset.FileNotOpenException; |
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import org.gvsig.raster.dataset.NotSupportedExtensionException; |
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import org.gvsig.raster.dataset.RasterDataset; |
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import org.gvsig.raster.dataset.RasterDriverException; |
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import org.gvsig.raster.dataset.properties.DatasetStatistics; |
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/**
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* Este test prueba el calculo de estadisticas de un dataset.
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* Comprueba que los valores obtenidos en las estadisticas son correctos.
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*
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*
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* Algunos costes del calculo de estadistica en el raster completo
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*
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* Ordenador: AMD Athlon(tm) XP 1800+ 1540MHz, 256KB Cach?, 500M RAM
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* Coste 1:
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* Raster: 17910x16062, 275M (GTiff), 1 Banda byte
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* Tiempo: 74.295 segs (sgtes igual)
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* Coste 2:
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* Raster: 8955x8031, 69M (GTiff), 1 Banda byte
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* Tiempo: 18.905 segs (sgtes 3.362s)
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* Coste 3:
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* Raster: 812x586, 2.8M (GTiff), 3 Banda short
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* Tiempo: 0.925 segs (sgtes 0.152s)
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* Coste 4:
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* Raster: 870x870, 210K (Jpeg), 3 Banda byte
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* Tiempo: 0.318 segs (sgtes 0.255s)
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*
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* @author Nacho Brodin (nachobrodin@gmail.com)
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*
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*/
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public class TestStatistics extends TestCase{ |
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private String baseDir = "./test-images/"; |
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private String path1 = baseDir + "03AUG23153350-M2AS-000000122423_01_P001-BROWSE.jpg"; |
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private String path2 = baseDir + "wcs16bits.tif"; |
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private RasterDataset f1 = null; |
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private RasterDataset f2 = null; |
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private DatasetStatistics stats1 = null; |
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private DatasetStatistics stats2 = null; |
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static{
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RasterLibrary.wakeUp(); |
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} |
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public void start(){ |
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this.setUp();
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this.testStack();
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} |
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public void setUp() { |
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System.err.println("TestStatistics running..."); |
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try {
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f1 = RasterDataset.openFile(null, path1);
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f2 = RasterDataset.openFile(null, path2);
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} catch (NotSupportedExtensionException e) {
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e.printStackTrace(); |
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} catch (RasterDriverException e) {
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e.printStackTrace(); |
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} |
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stats1 = f1.getStatistics(); |
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stats2 = f2.getStatistics(); |
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} |
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public void testStack(){ |
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try {
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stats1.calcFullStatistics(); |
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} catch (FileNotOpenException e) {
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e.printStackTrace(); |
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} catch (RasterDriverException e) {
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e.printStackTrace(); |
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} |
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dataTestB1(stats1); |
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dataTestB2(stats1); |
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dataTestB3(stats1); |
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//print(stats1);
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try {
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stats2.calcFullStatistics(); |
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} catch (FileNotOpenException e) {
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e.printStackTrace(); |
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} catch (RasterDriverException e) {
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e.printStackTrace(); |
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} |
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dataTestB1_2(stats2); |
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dataTestB2_2(stats2); |
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dataTestB3_2(stats2); |
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//print(stats2);
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} |
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private void dataTestB1(DatasetStatistics stats){ |
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assertEquals(new Double(stats.getMax()[0]), new Double(255.0)); |
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assertEquals(new Double(stats.getMin()[0]), new Double(0.0)); |
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assertEquals(new Double(stats.getSecondMax()[0]), new Double(253.0)); |
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assertEquals(new Double(stats.getSecondMin()[0]), new Double(7.0)); |
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assertEquals((int)stats.getMean()[0], 109); |
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assertEquals((int)stats.getVariance()[0], 6125); |
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} |
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private void dataTestB2(DatasetStatistics stats){ |
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assertEquals(new Double(stats.getMax()[1]), new Double(255.0)); |
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assertEquals(new Double(stats.getMin()[1]), new Double(0.0)); |
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assertEquals(new Double(stats.getSecondMax()[1]), new Double(254.0)); |
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assertEquals(new Double(stats.getSecondMin()[1]), new Double(1.0)); |
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assertEquals((int)stats.getMean()[1], 111); |
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assertEquals((int)stats.getVariance()[1], 5722); |
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} |
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private void dataTestB3(DatasetStatistics stats){ |
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assertEquals(new Double(stats.getMax()[2]), new Double(255.0)); |
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assertEquals(new Double(stats.getMin()[2]), new Double(0.0)); |
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assertEquals(new Double(stats.getSecondMax()[2]), new Double(253.0)); |
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assertEquals(new Double(stats.getSecondMin()[2]), new Double(5.0)); |
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assertEquals((int)stats.getMean()[2], 98); |
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assertEquals((int)stats.getVariance()[2], 5495); |
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} |
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private void dataTestB1_2(DatasetStatistics stats){ |
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assertEquals(new Double(stats.getMax()[0]), new Double(1269.0)); |
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assertEquals(new Double(stats.getMin()[0]), new Double(0.0)); |
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assertEquals(new Double(stats.getSecondMax()[0]), new Double(1233.0)); |
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assertEquals(new Double(stats.getSecondMin()[0]), new Double(27.0)); |
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assertEquals((int)stats.getMean()[0], 71); |
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assertEquals((int)stats.getVariance()[0], 22678); |
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} |
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private void dataTestB2_2(DatasetStatistics stats){ |
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assertEquals(new Double(stats.getMax()[1]), new Double(1525.0)); |
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assertEquals(new Double(stats.getMin()[1]), new Double(0.0)); |
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assertEquals(new Double(stats.getSecondMax()[1]), new Double(1498.0)); |
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assertEquals(new Double(stats.getSecondMin()[1]), new Double(35.0)); |
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assertEquals((int)stats.getMean()[1], 104); |
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assertEquals((int)stats.getVariance()[1], 37907); |
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} |
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private void dataTestB3_2(DatasetStatistics stats){ |
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assertEquals(new Double(stats.getMax()[2]), new Double(888.0)); |
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assertEquals(new Double(stats.getMin()[2]), new Double(0.0)); |
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assertEquals(new Double(stats.getSecondMax()[2]), new Double(884.0)); |
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assertEquals(new Double(stats.getSecondMin()[2]), new Double(24.0)); |
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assertEquals((int)stats.getMean()[2], 75); |
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assertEquals((int)stats.getVariance()[2], 17437); |
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} |
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private void print(DatasetStatistics stats){ |
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for(int iBand = 0; iBand < f1.getBandCount(); iBand ++){ |
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System.out.println("Band " + iBand); |
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System.out.println("...Max: " + stats.getMax()[iBand]); |
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System.out.println("...Min: " + stats.getMin()[iBand]); |
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System.out.println("...SecondMax: " + stats.getSecondMax()[iBand]); |
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System.out.println("...SecondMin: " + stats.getSecondMin()[iBand]); |
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System.out.println("...Mean: " + stats.getMean()[iBand]); |
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System.out.println("...Variance: " + stats.getVariance()[iBand]); |
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} |
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} |
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} |