Application: gvSIG desktop

import java.io.IOException;

import junit.framework.TestCase;

import es.gva.cit.jgdal.GdalBuffer;

import es.gva.cit.jgdal.GdalException;

import es.gva.cit.jgdal.GdalRasterBand;

 * @author Miguel Ángel Querol Carratalá <miguelangel.querol@iver.es>

	private GdalRasterBand[] bands = null;

	private int bandCount = 0;

	private String fileName = "testGdal.tif";

	private String file1 = baseDir + fileName;

	private String[] metadata = null;

	private String proj = null;

	private int						blockXSize = 0;

	private int						blockYSize = 0;

	private int						dataType = 0;

	private int						interpretation = 0;

	private int						xSize = 0;

	private int						ySize = 0;

	private int iter = 20;

		gdal = new Gdal();

		try {

			System.out.println("***** TEST DE ACCESO A RASTER *****");

			System.out.println("     IMAGEN: " + fileName + "\n");

			gdal.open(file1, gdal.GA_ReadOnly);

			bandCount = gdal.getRasterCount();

			System.out.println("Número de bandas: " + bandCount);

			bands = new GdalRasterBand[bandCount];

			for (int j = 1; j<=bandCount ; j++){

				bands[j-1] = gdal.getRasterBand(j);

			}

			metadata = gdal.getMetadata();

			proj = gdal.getProjectionRef();

			for (int j = 0 ; j<bands.length ; j++){

				blockXSize = bands[j].getBlockXSize();

				blockYSize = bands[j].getBlockYSize();

				dataType = bands[j].getRasterDataType();

				interpretation = bands[j].getRasterColorInterpretation();

				xSize = bands[j].getRasterBandXSize();

				ySize = bands[j].getRasterBandYSize();

				System.out.println("Información de la banda " + j + "\n");

				System.out.println("*************************");

				System.out.println("Tamaño de bloque en X: " + blockXSize);

				System.out.println("Tamaño de bloque en Y: " + blockYSize);

				System.out.println("Tipo de datos: " + dataType);

				System.out.println("Interpretación de color: " + interpretation);

				System.out.println("Tamaño en X: " + xSize);

				System.out.println("Tamaño en Y: " + ySize);

				System.out.println("*************************\n");

			}

		} catch (GdalException e) {

		} catch (IOException e) {

		}

		try{

			for (int x = 0 ; x<xSize ; x+=50){

				for (int y = 0 ; y<ySize ; y+=50){

					if (((x+50)>xSize)  || ((y+50)>ySize)){

						break;

					}

					GdalBuffer[] buff = new GdalBuffer[bandCount];

					for (int i = 0 ; i<bandCount ; i++){

						buff[i] = bands[i].readRaster(x, y, 50, 50, 50, 50, dataType);

						System.out.println("Zoom " + x + " - " + y + ". --- Banda " + i);

					}

				}

			}

			gdal.close();

		}catch(GdalException e){

		}