Revision 30008 branches/v2_0_0_prep/libraries/libRaster/src/org/gvsig/raster/grid/GridWriter.java
| GridWriter.java | ||
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import org.gvsig.raster.dataset.IBuffer; |
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/** |
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* Esta clase representa un grid para escritura
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* Esta clase representa un grid para escritura |
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* @author Nacho Brodin (nachobrodin@gmail.com) |
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*/ |
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public class GridWriter{
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private GridExtent extent = null; |
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private int dataType = IBuffer.TYPE_UNDEFINED; |
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private int bandToOperate = 0; |
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/** |
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* Asignaci?n del buffer de datos e inicializaci?n de variables.
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* Asignaci?n del buffer de datos e inicializaci?n de variables. |
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* @param ge Extent del grid |
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* @param dataType Tipo de dato del grid |
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* @param rasterBuf Buffer de datos del grid |
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*/ |
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public GridWriter(GridExtent ge, int dataType, RasterBuffer rasterBuf){
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this.rasterBuf = rasterBuf; |
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this.extent = ge;
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this.extent = ge; |
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} |
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/** |
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* Creaci?n del escritor de grid a trav?s de los par?metros de su extent. Con |
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* ellos se crear? el GridExtent y el buffer de datos para escribir. |
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* @param bands Bandas a escribir |
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*/ |
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public GridWriter(int iNX, int iNY, double dCellSize, |
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double dMinX, double dMinY, int dataType,
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double dMinX, double dMinY, int dataType, |
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int[] bands) {
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extent = new GridExtent(); |
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extent.setCellSize(dCellSize); |
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extent.setXRange(dMinX, dMinX + iNX * dCellSize); |
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extent.setYRange(dMinY, dMinY + iNY * dCellSize); |
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rasterBuf = RasterBuffer.getBuffer(dataType, iNX, iNY, bands.length, true); |
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} |
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public void assign(byte value) throws RasterBufferInvalidAccessException {
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try{
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rasterBuf.assign(bandToOperate, value); |
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throw new RasterBufferInvalidAccessException("Access to data type " + dataType + "invalid");
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} |
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} |
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public void assign(short value) throws RasterBufferInvalidAccessException {
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try{
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rasterBuf.assign(bandToOperate, value); |
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throw new RasterBufferInvalidAccessException("Access to data type " + dataType + "invalid");
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}catch(NullPointerException e){
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throw new RasterBufferInvalidAccessException("Access to data type " + dataType + "invalid");
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}
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} |
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} |
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public void assign(int value) throws RasterBufferInvalidAccessException {
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try{
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rasterBuf.assign(bandToOperate, value); |
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throw new RasterBufferInvalidAccessException("Access to data type " + dataType + "invalid");
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}catch(NullPointerException e){
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throw new RasterBufferInvalidAccessException("Access to data type " + dataType + "invalid");
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}
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} |
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} |
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public void assign(float value) throws RasterBufferInvalidAccessException {
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try{
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rasterBuf.assign(bandToOperate, value); |
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throw new RasterBufferInvalidAccessException("Access to data type " + dataType + "invalid");
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}catch(NullPointerException e){
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throw new RasterBufferInvalidAccessException("Access to data type " + dataType + "invalid");
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}
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} |
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} |
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public void assign(double value) throws RasterBufferInvalidAccessException {
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try{
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rasterBuf.assign(bandToOperate, value); |
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throw new RasterBufferInvalidAccessException("Access to data type " + dataType + "invalid");
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}catch(NullPointerException e){
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throw new RasterBufferInvalidAccessException("Access to data type " + dataType + "invalid");
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}
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} |
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} |
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public GridExtent getGridExtent() {
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public GridExtent getGridExtent() {
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return extent; |
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} |
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public void setCellValue( int iX, int iY, byte value) throws OutOfGridException {
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if (isCellInGrid(iX, iY)) |
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rasterBuf.setElem(iY, iX, bandToOperate, value);
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rasterBuf.setElem(iY, iX, bandToOperate, value); |
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else |
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throw new OutOfGridException("Point:(" + iX + "," + iY + ") out of grid.");
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} |
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public void setCellValue( int iX, int iY, short value) throws OutOfGridException {
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if (isCellInGrid(iX, iY)) |
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rasterBuf.setElem(iY, iX, bandToOperate, value);
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rasterBuf.setElem(iY, iX, bandToOperate, value); |
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else |
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throw new OutOfGridException("Point:(" + iX + "," + iY + ") out of grid.");
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} |
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public void setCellValue( int iX, int iY, int value) throws OutOfGridException {
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if (isCellInGrid(iX, iY)) |
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rasterBuf.setElem(iY, iX, bandToOperate, value);
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rasterBuf.setElem(iY, iX, bandToOperate, value); |
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else |
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throw new OutOfGridException("Point:(" + iX + "," + iY + ") out of grid.");
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} |
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public void setCellValue( int iX, int iY, float value) throws OutOfGridException {
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if (isCellInGrid(iX, iY)) |
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rasterBuf.setElem(iY, iX, bandToOperate, value);
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rasterBuf.setElem(iY, iX, bandToOperate, value); |
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else |
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throw new OutOfGridException("Point:(" + iX + "," + iY + ") out of grid.");
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} |
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public void setCellValue( int iX, int iY, double value) throws OutOfGridException {
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if (isCellInGrid(iX, iY)) |
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rasterBuf.setElem(iY, iX, bandToOperate, value);
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rasterBuf.setElem(iY, iX, bandToOperate, value); |
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else |
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throw new OutOfGridException("Point:(" + iX + "," + iY + ") out of grid.");
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} |
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public void setNoData( int iX, int iY) {
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if (isCellInGrid(iX,iY)) {
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if (isCellInGrid(iX,iY)) |
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switch(rasterBuf.getDataType()) {
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case IBuffer.TYPE_BYTE: rasterBuf.setElem(iY, iX, bandToOperate, (byte)rasterBuf.getNoDataValue());break; |
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case IBuffer.TYPE_SHORT: rasterBuf.setElem(iY, iX, bandToOperate, (short)rasterBuf.getNoDataValue());break; |
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case IBuffer.TYPE_INT: rasterBuf.setElem(iY, iX, bandToOperate, (int)rasterBuf.getNoDataValue());break; |
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case IBuffer.TYPE_FLOAT: rasterBuf.setElem(iY, iX, bandToOperate, (float)rasterBuf.getNoDataValue());break; |
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case IBuffer.TYPE_DOUBLE: rasterBuf.setElem(iY, iX, bandToOperate, (double)rasterBuf.getNoDataValue());break;
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case IBuffer.TYPE_DOUBLE: rasterBuf.setElem(iY, iX, bandToOperate, rasterBuf.getNoDataValue());break; |
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} |
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} |
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} |
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/** |
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* Exporta a fichero ArcView ASCII pasandole el nombre del fichero a salvar. Esta |
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* llamada afecta solo a la banda 0 del raster y es especial para MDT's y para conservar |
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* la compatibilidad con c?digo que la usa de esta forma. |
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*
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* |
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* @param sFile Nombre del fichero |
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* @throws IOException
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* @throws IOException |
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* @throws NumberFormatException |
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*/ |
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public void ExportToArcViewASCIIFile(String sFile) |
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throws IOException, NumberFormatException {
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ExportToArcViewASCIIFile(sFile, bandToOperate); |
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} |
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/** |
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* Exporta a fichero ArcView ASCII pasandole el nombre del fichero a salvar. |
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* @param sFile Nombre del fichero |
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* @param band
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* @param band |
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* @throws IOException |
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* @throws NumberFormatException |
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*/ |
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public void ExportToArcViewASCIIFile(String sFile, int band) |
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throws IOException, NumberFormatException {
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BufferedWriter fout = new BufferedWriter(new FileWriter(sFile)); |
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fout.write("ncols " + Integer.toString(extent.getNX()));
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fout.newLine(); |
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fout.write("nrows " + Integer.toString(extent.getNY()));
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fout.newLine(); |
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fout.write("xllcorner " + Double.toString(extent.minX()));
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fout.newLine();
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fout.newLine(); |
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fout.write("yllcorner " + Double.toString(extent.minY()));
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fout.newLine(); |
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fout.write("cellsize " + Double.toString(extent.getCellSize()));
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fout.newLine(); |
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fout.write("nodata_value " + Float.toString((float)rasterBuf.getNoDataValue()));
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fout.newLine(); |
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switch(rasterBuf.getDataType()) {
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case IBuffer.TYPE_BYTE: for (int i = 0; i < extent.getNY(); i++) {
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for (int j = 0; j < extent.getNX(); j++) |
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} |
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fout.close(); |
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} |
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public void setNoDataValue(double noDataValue) {
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rasterBuf.setNoDataValue(noDataValue); |
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} |
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public boolean isCellInGrid(int iX, int iY) {
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return (iX >= 0 && iX < extent.getNX() && iY >= 0 && iY < extent.getNY()); |
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} |
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/** |
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* Asigna la banda sobre la que se realizan las operaciones. Por defecto es la banda 0 |
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* con lo que para el uso de MDTs no habr? que modificar este valor. |
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public void setBandToOperate(int band) {
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this.bandToOperate = band; |
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} |
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/** |
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* Releases buffer resources |
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*/ |
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public void free() {
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if (rasterBuf != null) {
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rasterBuf.free(); |
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rasterBuf = null; |
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} |
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} |
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} |
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