gvsig-raster / org.gvsig.raster / trunk / org.gvsig.raster / org.gvsig.raster.main / src / test / java / org / gvsig / fmap / dal / coverage / grid / TestGridReadingFullDatasource.java @ 2443
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/* gvSIG. Geographic Information System of the Valencian Government
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*
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* Copyright (C) 2007-2008 Infrastructures and Transports Department
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* of the Valencian Government (CIT)
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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., 51 Franklin Street, Fifth Floor, Boston,
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* MA 02110-1301, USA.
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*
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*/
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package org.gvsig.fmap.dal.coverage.grid; |
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import org.gvsig.fmap.dal.coverage.BaseTestCase; |
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import org.gvsig.fmap.dal.coverage.dataset.Buffer; |
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import org.gvsig.fmap.dal.coverage.exception.GridException; |
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import org.gvsig.fmap.dal.coverage.exception.NotSupportedExtensionException; |
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import org.gvsig.fmap.dal.coverage.exception.OutOfGridException; |
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import org.gvsig.fmap.dal.coverage.exception.RasterBufferInvalidAccessException; |
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import org.gvsig.fmap.dal.coverage.exception.RasterBufferInvalidException; |
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import org.gvsig.fmap.dal.coverage.exception.RasterDriverException; |
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import org.gvsig.fmap.dal.coverage.store.RasterDataStore; |
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import org.gvsig.raster.impl.grid.GridImpl; |
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/**
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* Este test prueba el acceso a datos a traves de un grid.
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* A partir de una fuente de datos (cargada en el constructor del Grid).
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* 1-F32 Monobanda: Se har? una petici?n del extent completo de la fuente seleccionando tres bandas.
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* 2-Comprobamos el tipo de datos el ancho y el alto
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* 3-Modifica algunos valores del grid y se comprueba que las modificaciones han sido efectivas.
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* 4-Cambiamos la banda a operar y obtenemos un dato comprobando que tiene que devolver NoData
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*
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* 1-RGB: Se har? una petici?n del extent completo de la fuente seleccionando tres bandas.
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* 2-Comprobamos el tipo de datos el ancho y el alto
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* 3-Modifica algunos valores del grid y se comprueba que las modificaciones han sido efectivas.
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* 4-Cambiamos la banda a operar y obtenemos un dato comprobando que el valor que devuelve es correcto
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* 5 -Comprobamos que si nos salimos devuelve un NoData
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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 TestGridReadingFullDatasource extends BaseTestCase { |
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private String path1 = baseDir + "miniRaster28x25F32.tif"; |
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private String path2 = baseDir + "miniRaster25x24.tif"; |
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private RasterDataStore f1 = null; |
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private RasterDataStore f2 = null; |
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protected Buffer buf1 = null; |
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public void start() throws Exception { |
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this.setUp();
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this.testStack();
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} |
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protected void doSetUp() throws Exception { |
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System.err.println("TGReadingFullDatasourceSelectingBands running..."); |
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try {
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super.doSetUp();
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} catch (Exception e) { |
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e.printStackTrace(); |
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} |
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try {
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f1 = manager.open(path1); |
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f2 = manager.open(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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} |
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public void testStack() { |
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try {
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Grid g = new GridImpl(f1);
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g.setNoDataValue(-99999);
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assertEquals(g.getDataType(), 4); //Tipo float |
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assertEquals(g.getNY(), 25); //Alto |
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assertEquals(g.getNX(), 28); //Ancho |
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testCellBufferFloat(g, 0);
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g.setCellValue(0, 0, (float)31.22); |
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g.setCellValue(2, 2, (float)31.22); |
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g.setCellValue(3, 8, (float)31.22); |
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g.setCellValue(10, 15, (float)31.22); |
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testCellBufferFloat(g, 0);
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assertEquals((int)g.getCellValueAsFloat(0, 0), 31); |
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assertEquals((int)g.getCellValueAsFloat(2, 2), 31); |
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assertEquals((int)g.getCellValueAsFloat(3, 8), 31); |
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assertEquals((int)g.getCellValueAsFloat(10, 15), 31); |
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// g.setBandToOperate(2);
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assertEquals((int)g.getCellValueAsFloat(10000, 10000), -99999); |
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g = new GridImpl(f2);
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g.setNoDataValue(-99999);
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assertEquals(g.getDataType(), 0); //Tipo byte |
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assertEquals(g.getNY(), 24); //Alto |
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assertEquals(g.getNX(), 25); //Ancho |
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testCellBufferByte(g, 0);
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g.setCellValue(0, 0, (byte)31); |
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g.setCellValue(2, 2, (byte)31); |
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g.setCellValue(3, 8, (byte)31); |
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g.setCellValue(10, 15, (byte)31); |
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testCellBufferByte(g, 0);
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assertEquals(g.getCellValueAsByte(0, 0), 31); |
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assertEquals(g.getCellValueAsByte(2, 2), 31); |
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assertEquals(g.getCellValueAsByte(3, 8), 31); |
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assertEquals(g.getCellValueAsByte(10, 15), 31); |
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g.setBandToOperate(2);
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assertEquals((int)g.getCellValueAsByte(10, 15), 107); |
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//Comprobamos que si nos salimos devuelve un NoData
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assertEquals((int)g.getCellValueAsFloat(100, 100), -99999); |
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assertEquals((int)g.getCellValueAsFloat(-1, 10), -99999); |
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assertEquals((int)g.getCellValueAsFloat(1000, 2310), -99999); |
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} catch (RasterBufferInvalidException e1) {
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e1.printStackTrace(); |
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} catch (RasterBufferInvalidAccessException e2) {
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e2.printStackTrace(); |
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} catch (OutOfGridException e3) {
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e3.printStackTrace(); |
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} catch (GridException e3) {
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e3.printStackTrace(); |
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} |
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} |
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/**
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* Compara todos los elementos del buffer con los del grid para comprobar
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* la correcci?n de la lectura.
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* @param g
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* @throws RasterBufferInvalidAccessException
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*/
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private void testCellBufferFloat(Grid g, int band) throws RasterBufferInvalidAccessException, GridException { |
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int nCols = (int)f1.getWidth(); |
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int nRows = (int)f1.getHeight(); |
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for(int i = 0; i < nRows; i ++) { |
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for(int j = 0; j < nCols; j ++) |
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assertEquals((int)g.getCellValueAsFloat(j, i), (int)g.getRasterBuf().getElemFloat(i, j, band)); |
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} |
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} |
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/**
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* Compara todos los elementos del buffer con los del grid para comprobar
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* la correcci?n de la lectura.
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* @param g
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* @throws RasterBufferInvalidAccessException
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*/
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private void testCellBufferByte(Grid g, int band) throws RasterBufferInvalidAccessException, GridException { |
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int nCols = (int)f2.getWidth(); |
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int nRows = (int)f2.getHeight(); |
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for(int i = 0; i < nRows; i ++) { |
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for(int j = 0; j < nCols; j ++) |
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assertEquals((int)g.getCellValueAsByte(j, i), (int)g.getRasterBuf().getElemByte(i, j, band)); |
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} |
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} |
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} |