svn-gvsig-desktop / trunk / libraries / libRaster / src-test / org / gvsig / raster / dataaccess / TestGdalClassHistogram.java @ 10768
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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) 2007 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.dataaccess; |
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import junit.framework.TestCase; |
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import org.gvsig.raster.dataaccess.DataSource; |
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import org.gvsig.raster.driver.FileNotOpenException; |
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import org.gvsig.raster.driver.IBuffer; |
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import org.gvsig.raster.driver.NotSupportedExtensionException; |
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import org.gvsig.raster.driver.RasterDataset; |
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import org.gvsig.raster.driver.RasterDriverException; |
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import org.gvsig.raster.shared.DataClass; |
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import org.gvsig.raster.shared.DataClassList; |
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import org.gvsig.raster.shared.RasterLibrary; |
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/**
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* Test a un histograma usando clases. El test se realiza sobre un raster en
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* coma flotante de 28x25 pixels. Se crean clases de tres tipo de intervalos distintos y
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* se testean los valores obtenidos en el histograma resultante. El ?ltimo
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* test comprueba la generaci?n autom?tica de clases.
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*
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* @author Nacho Brodin (nachobrodin@gmail.com)
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*/
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public class TestGdalClassHistogram extends TestCase{ |
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private String baseDir = "./test-images/"; |
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private String path = baseDir + "miniRaster28x25F32.tif"; |
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private RasterDataset f = null; |
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private DataSource ds = null; |
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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("TestGdalClassHistogram running..."); |
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} |
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static{
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RasterLibrary.wakeUp(); |
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} |
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public void testStack(){ |
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int[] drawableBands = {0, 1, 2}; |
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try {
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f = RasterDataset.openFile(null, path);
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} catch (NotSupportedExtensionException e) {
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return;
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} catch (RasterDriverException e) {
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return;
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} |
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ds = new DataSource(f); |
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ds.addDrawableBands(drawableBands); |
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ds.setAreaOfInterest(0, 0, 28, 25); |
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//printData();
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DataClassList classList = new DataClassList();
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DataClass classInterval1 = new DataClass(0D, 1000D, 0, ""); |
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DataClass classInterval2 = new DataClass(1000D, 2000D, 1, ""); |
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classList.addClass(classInterval1); |
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classList.addClass(classInterval2); |
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long[][] histogram = null; |
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try {
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histogram = ds.getHistogram(classList); |
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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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testHist1(histogram); |
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classList.clear(); |
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classInterval1 = new DataClass(0D, 1200D, 0, ""); |
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classInterval2 = new DataClass(1200D, 2000D, 1, ""); |
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classList.addClass(classInterval1); |
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classList.addClass(classInterval2); |
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try {
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histogram = ds.getHistogram(classList); |
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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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testHist2(histogram); |
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classList.clear(); |
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classInterval1 = new DataClass(0D, 1150D, 0, ""); |
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classInterval2 = new DataClass(115D, 1175D, 1, ""); |
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DataClass classInterval3 = new DataClass(1175D, 1200D, 2, ""); |
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DataClass classInterval4 = new DataClass(1200D, 1210D, 3, ""); |
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DataClass classInterval5 = new DataClass(1210D, 2000D, 4, ""); |
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classList.addClass(classInterval1); |
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classList.addClass(classInterval2); |
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classList.addClass(classInterval3); |
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classList.addClass(classInterval4); |
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classList.addClass(classInterval5); |
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try {
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histogram = ds.getHistogram(classList); |
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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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testHist3(histogram); |
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try {
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histogram = ds.getHistogram(null);
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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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testHist4(histogram); |
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//print(histogram);
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} |
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private void testHist1(long[][] histogram){ |
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assertEquals(histogram[0][0], 0); |
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assertEquals(histogram[0][1], 700); |
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} |
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private void testHist2(long[][] histogram){ |
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assertEquals(histogram[0][0], 180); |
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assertEquals(histogram[0][1], 520); |
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} |
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private void testHist3(long[][] histogram){ |
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assertEquals(histogram[0][0], 4); |
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assertEquals(histogram[0][1], 38); |
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assertEquals(histogram[0][2], 138); |
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assertEquals(histogram[0][3], 100); |
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assertEquals(histogram[0][4], 420); |
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} |
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private void testHist4(long[][] histogram){ |
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assertEquals(histogram[0][0], 10); |
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assertEquals(histogram[0][1], 17); |
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assertEquals(histogram[0][2], 36); |
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assertEquals(histogram[0][3], 72); |
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assertEquals(histogram[0][4], 119); |
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assertEquals(histogram[0][5], 129); |
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assertEquals(histogram[0][6], 98); |
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assertEquals(histogram[0][7], 93); |
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assertEquals(histogram[0][8], 76); |
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assertEquals(histogram[0][9], 49); |
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} |
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private void print(long[][] histogram){ |
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for (int i = 0; i < histogram.length; i++) { |
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for (int j = 0; j < histogram[i].length; j++){ |
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System.out.print(histogram[i][j] + " "); |
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} |
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System.out.println(""); |
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} |
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} |
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/**
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* Imprime todos los pixels de la fuente de datos en RGB
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*/
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private void printData(){ |
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IBuffer raster = ds.getRasterBuf(); |
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for(int line = 0; line < raster.getHeight(); line++){ |
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for(int col = 0; col < raster.getWidth(); col++) |
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System.out.print("(" + raster.getElemFloat(line, col, 0) + ")"); |
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System.out.println();
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} |
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} |
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} |