root / trunk / libraries / libRaster / src-test / org / gvsig / raster / buffer / TestGdalFloatHistogram.java @ 11478
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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.buffer; |
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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.IBuffer; |
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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.MultiRasterDataset; |
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import org.gvsig.raster.util.Histogram; |
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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 TestGdalFloatHistogram 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 BufferFactory 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("TestGdalFloatHistogram 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.open(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 BufferFactory(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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Histogram histogram = null;
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MultiRasterDataset rmd = ds.getGeoRasterMultiFile(); |
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/*try {
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histogram = rmd.getHistogram();
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} catch (HistogramException e) {
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e.printStackTrace();
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}*/
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//testHist1(histogram);
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} |
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private void testHist1(Histogram histogram) { |
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assertEquals((int)histogram.getHistogramValue(0, 0), 0); |
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assertEquals((int)histogram.getHistogramValue(0, 1), 700); |
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} |
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private void testHist2(Histogram histogram) { |
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assertEquals((int)histogram.getHistogramValue(0, 0), 180); |
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assertEquals((int)histogram.getHistogramValue(0, 1), 520); |
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} |
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private void testHist3(Histogram histogram) { |
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assertEquals((int)histogram.getHistogramValue(0, 0), 4); |
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assertEquals((int)histogram.getHistogramValue(0, 1), 38); |
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assertEquals((int)histogram.getHistogramValue(0, 2), 138); |
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assertEquals((int)histogram.getHistogramValue(0, 3), 100); |
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assertEquals((int)histogram.getHistogramValue(0, 4), 420); |
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} |
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private void testHist4(Histogram histogram) { |
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assertEquals((int)histogram.getHistogramValue(0, 0), 10); |
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assertEquals((int)histogram.getHistogramValue(0, 1), 17); |
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assertEquals((int)histogram.getHistogramValue(0, 2), 36); |
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assertEquals((int)histogram.getHistogramValue(0, 3), 72); |
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assertEquals((int)histogram.getHistogramValue(0, 4), 119); |
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assertEquals((int)histogram.getHistogramValue(0, 5), 129); |
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assertEquals((int)histogram.getHistogramValue(0, 6), 98); |
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assertEquals((int)histogram.getHistogramValue(0, 7), 93); |
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assertEquals((int)histogram.getHistogramValue(0, 8), 76); |
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assertEquals((int)histogram.getHistogramValue(0, 9), 49); |
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} |
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private void print(Histogram histogram) { |
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for (int i = 0; i < histogram.getNumBands(); i++) { |
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for (int j = 0; j < histogram.getBandLenght(i); j++) { |
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System.out.print(histogram.getHistogramValue(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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} |