| gvSIG desktop 1

	/**

	 * Lee una bloque completo del raster y devuelve un array tridimensional del tipo correcto. Esta funci?n es util

	 * para una lectura rapida de todo el fichero sin necesidad de asignar vista. 

	 * @param nLine N?mero de l?nea a leer

	 * @param band Banda requerida

	 * @return Object que es un array unidimendional del tipo de datos del raster

	 * @throws GdalException

	 */

	public Object readBlock(int pos, int blockHeight) throws GdalException {

		bBandNr = super.getRasterCount();

		int nX = getRasterXSize();

		GdalRasterBand[] gdalBand = new GdalRasterBand[bBandNr];

		for (int iBand = 0; iBand < gdalBand.length; iBand++) {

			gdalBand[iBand] = super.getRasterBand(iBand + 1);

		}

		GdalBuffer[] gdalBuf = new GdalBuffer[bBandNr];

		if (dataType == GDT_Byte) {

			byte[][][] buf = new byte[bBandNr][blockHeight][getRasterXSize()];

			for (int iBand = 0; iBand < gdalBuf.length; iBand++) {

				gdalBuf[iBand] = gdalBand[iBand].readRaster(0, pos, nX, blockHeight, nX, blockHeight, dataType);

				for (int iRow = 0; iRow < blockHeight; iRow++) 

					for (int iCol = 0; iCol < nX; iCol++) 

						buf[iBand][iRow][iCol] = gdalBuf[iBand].buffByte[iRow * nX + iCol];

			}	

			return buf;

		} else if (dataType == GDT_CInt16 || dataType == GDT_Int16  || dataType == GDT_UInt16) {

			short[][][] buf = new short[bBandNr][blockHeight][getRasterXSize()];

			for (int iBand = 0; iBand < gdalBuf.length; iBand++) {

				gdalBuf[iBand] = gdalBand[iBand].readRaster(0, pos, nX, blockHeight, nX, blockHeight, dataType);

				for (int iRow = 0; iRow < blockHeight; iRow++) 

					for (int iCol = 0; iCol < nX; iCol++) 

						buf[iBand][iRow][iCol] = gdalBuf[iBand].buffShort[iRow * nX + iCol];

			}	

			return buf;

		} else if (dataType == GDT_CInt32 || dataType == GDT_Int32  || dataType == GDT_UInt32) {

			int[][][] buf = new int[bBandNr][blockHeight][getRasterXSize()];

			for (int iBand = 0; iBand < gdalBuf.length; iBand++) {

				gdalBuf[iBand] = gdalBand[iBand].readRaster(0, pos, nX, blockHeight, nX, blockHeight, dataType);

				for (int iRow = 0; iRow < blockHeight; iRow++) 

					for (int iCol = 0; iCol < nX; iCol++)

						buf[iBand][iRow][iCol] = gdalBuf[iBand].buffInt[iRow * nX + iCol];;

			}	

			return buf;

		} else if(dataType == GDT_Float32 || dataType == GDT_CFloat32) {

			float[][][] buf = new float[bBandNr][blockHeight][getRasterXSize()];

			for (int iBand = 0; iBand < gdalBuf.length; iBand++) {

				gdalBuf[iBand] = gdalBand[iBand].readRaster(0, pos, nX, blockHeight, nX, blockHeight, dataType);

				for (int iRow = 0; iRow < blockHeight; iRow++)

					for (int iCol = 0; iCol < nX; iCol++)

						buf[iBand][iRow][iCol] = gdalBuf[iBand].buffFloat[iRow * nX + iCol];;

			}	

			return buf;

		} else if(dataType == GDT_Float64 || dataType == GDT_CFloat64) {

			double[][][] buf = new double[bBandNr][blockHeight][getRasterXSize()];

			for (int iBand = 0; iBand < gdalBuf.length; iBand++) {

				gdalBuf[iBand] = gdalBand[iBand].readRaster(0, pos, nX, blockHeight, nX, blockHeight, dataType);

				for (int iRow = 0; iRow < blockHeight; iRow++)

					for (int iCol = 0; iCol < nX; iCol++)

						buf[iBand][iRow][iCol] = gdalBuf[iBand].buffDouble[iRow * nX + iCol];;

			}		

			return buf;

		}

  		return null;

	}