| gvSIG desktop 1

/*

 * Created on 19-jul-2006

 *

 * To change the template for this generated file go to

 * Window>Preferences>Java>Code Generation>Code and Comments

 */

/* gvSIG. Sistema de Informaci�n Geogr�fica de la Generalitat Valenciana

 *

 * Copyright (C) 2004 IVER T.I. and Generalitat Valenciana.

 *

 * This program is free software; you can redistribute it and/or

 * modify it under the terms of the GNU General Public License

 * as published by the Free Software Foundation; either version 2

 * of the License, or (at your option) any later version.

 *

 * This program is distributed in the hope that it will be useful,

 * but WITHOUT ANY WARRANTY; without even the implied warranty of

 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the

 * GNU General Public License for more details.

 *

 * You should have received a copy of the GNU General Public License

 * along with this program; if not, write to the Free Software

 * Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA  02111-1307,USA.

 */

package org.gvsig.raster.dataset;

import org.gvsig.raster.RasterLibrary;

import org.gvsig.raster.dataset.FileFoundInListException;

import org.gvsig.raster.dataset.FileNotOpenException;

import org.gvsig.raster.dataset.NotSupportedExtensionException;

import org.gvsig.raster.dataset.RasterDataset;

import org.gvsig.raster.dataset.RasterDriverException;

import org.gvsig.raster.dataset.RasterMultiDataset;

import org.gvsig.raster.dataset.properties.DatasetStatistics;

import junit.framework.TestCase;

/**

 * Prueba el calculo de estadisticas para un dataset con multiples ficheros.

 * Comprueba que los valores obtenidos en las estadisticas son correctos.

 * 

 * @author Nacho Brodin (nachobrodin@gmail.com)

 *

 */

public class TestStatisticMultiFile extends TestCase {

        private String baseDir = "./test-images/";

        private String path1 = baseDir + "band1-30x28byte.tif";

        private String path2 = baseDir + "band2-30x28byte.tif";

        private String path3 = baseDir + "band3-30x28byte.tif";

        private RasterDataset f1 = null;

        private RasterDataset f2 = null;

        private RasterDataset f3 = null;

        static {

                RasterLibrary.wakeUp();

        }

        public void start() {

                this.setUp();

                this.testStack();

        }

        public void setUp() {

                System.err.println("TestStatisticMultiFile running...");

                try {

                        f1 = RasterDataset.open(null, path1);

                        f2 = RasterDataset.open(null, path2);

                        f3 = RasterDataset.open(null, path3);

                } catch (NotSupportedExtensionException e) {

                        e.printStackTrace();

                } catch (RasterDriverException e) {

                        e.printStackTrace();

                }

        }

        public void testStack() {

                RasterMultiDataset grmf = new RasterMultiDataset("prueba");

                try {

                        grmf.addDataset(f1);

                        grmf.addDataset(f2);

                        grmf.addDataset(f3);

                        try {

                                grmf.getStatistics().calcFullStatistics();

                        } catch (FileNotOpenException e) {

                                e.printStackTrace();

                        } catch (RasterDriverException e) {

                                e.printStackTrace();

                        }

                        dataTestB1(grmf.getStatistics());

                        dataTestB2(grmf.getStatistics());

                        dataTestB3(grmf.getStatistics());

                        //print(grmf);

                } catch (FileFoundInListException e) {

                        e.printStackTrace();

                }

        }

        private void dataTestB1(DatasetStatistics stats){

                assertEquals(new Double(stats.getMax()[0]), new Double(249.0));

                assertEquals(new Double(stats.getMin()[0]), new Double(82.0));

                assertEquals(new Double(stats.getSecondMax()[0]), new Double(200.0));

                assertEquals(new Double(stats.getSecondMin()[0]), new Double(83.0));

                assertEquals((int)stats.getMean()[0], 119);

                assertEquals((int)stats.getVariance()[0], 583);

        }

        private void dataTestB2(DatasetStatistics stats){

                assertEquals(new Double(stats.getMax()[1]), new Double(234.0));

                assertEquals(new Double(stats.getMin()[1]), new Double(49.0));

                assertEquals(new Double(stats.getSecondMax()[1]), new Double(191.0));

                assertEquals(new Double(stats.getSecondMin()[1]), new Double(50.0));

                assertEquals((int)stats.getMean()[1], 102);

                assertEquals((int)stats.getVariance()[1], 1107);

        }

        private void dataTestB3(DatasetStatistics stats){

                assertEquals(new Double(stats.getMax()[2]), new Double(255.0));

                assertEquals(new Double(stats.getMin()[2]), new Double(28.0));

                assertEquals(new Double(stats.getSecondMax()[2]), new Double(231.0));

                assertEquals(new Double(stats.getSecondMin()[2]), new Double(34.0));

                assertEquals((int)stats.getMean()[2], 115);

                assertEquals((int)stats.getVariance()[2], 2833);

        }

        private void print(RasterMultiDataset grmf){

                for(int iBand = 0; iBand < grmf.getStatistics().getBandCount(); iBand ++){

                        System.out.println("Band " + iBand);

                        System.out.println("...Max: " + grmf.getStatistics().getMax()[iBand]);

                        System.out.println("...Min: " + grmf.getStatistics().getMin()[iBand]);

                        System.out.println("...SecondMax: " + grmf.getStatistics().getSecondMax()[iBand]);

                        System.out.println("...SecondMin: " + grmf.getStatistics().getSecondMin()[iBand]);

                        System.out.println("...Mean: " + grmf.getStatistics().getMean()[iBand]);

                        System.out.println("...Variance: " + grmf.getStatistics().getVariance()[iBand]);

                }

        }

}