Revision 11072 trunk/libraries/libRaster/src/org/gvsig/raster/dataset/properties/DatasetHistogram.java

View differences:

DatasetHistogram.java
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	 */
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	public Histogram getHistogram() throws FileNotOpenException, RasterDriverException {
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		try {
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			if(dataset != null){
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				if(classes == null){
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					if(dataset.getDataType() == IBuffer.TYPE_BYTE){
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			if (dataset != null) {
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				if (classes == null) {
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					if (dataset.getDataType() == IBuffer.TYPE_BYTE) {
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						histogram = new Histogram(dataset.getBandCount(), 256);
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						return getHistogramByValue();
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					}else{
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					} else {
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						DatasetStatistics stats = dataset.getStatistics();
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						stats.calcFullStatistics();
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						classes = DataClassList.getClasses(stats.getMinimun(), stats.getMaximun(), RasterLibrary.defaultNumberOfClasses);
......
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	 */
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	private Histogram getHistogramByValue() throws InvalidSetViewException, FileNotOpenException, RasterDriverException {
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		percent = 0;
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		if(dataset.getDataType() != IBuffer.TYPE_BYTE)
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			return null;
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		if (dataset.getDataType() != IBuffer.TYPE_BYTE) return null;
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		for (int band = 0; band < dataset.getBandCount(); band++) {
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			for (int line = 0; line < dataset.getHeight(); line++) {
......
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	 * @return Histograma correspondiente a la lista de clases
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	 */
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	private Histogram getHistogramByClass() throws InvalidSetViewException, FileNotOpenException, RasterDriverException {
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		if(classes == null)
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			return null;
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		percent = 0;
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		if (classes == null) return null;
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		for (int band = 0; band < dataset.getBandCount(); band++) {
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			for (int line = 0; line < dataset.getHeight(); line++) {
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				Object obj = dataset.readCompleteLine(line, band);
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				switch(dataset.getDataType()){
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				case IBuffer.TYPE_BYTE:		byte[] bLine = (byte[])obj;
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											for (int k = 0; k < bLine.length; k++) {
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												int pixelValue = classes.getClassPosition((double)bLine[k]);
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												if(pixelValue >= 0)
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													histogram.incrementPxValue(band, pixelValue);
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											}
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											break;
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				case IBuffer.TYPE_SHORT:	short[] sLine = (short[])obj;
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											for (int k = 0; k < sLine.length; k++) {
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												int pixelValue = classes.getClassPosition((double)sLine[k]);
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												if(pixelValue >= 0)
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													histogram.incrementPxValue(band, pixelValue);
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											}
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											break;
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				case IBuffer.TYPE_INT:		int[] iLine = (int[])obj;
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											for (int k = 0; k < iLine.length; k++) {
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												int pixelValue = classes.getClassPosition((double)iLine[k]);
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												if(pixelValue >= 0)
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													histogram.incrementPxValue(band, pixelValue);
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											}
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											break;
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				case IBuffer.TYPE_FLOAT:	float[] fLine = (float[])obj;
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											for (int k = 0; k < fLine.length; k++) {
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												int pixelValue = classes.getClassPosition((double)fLine[k]);
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												if(pixelValue >= 0)
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													histogram.incrementPxValue(band, pixelValue);
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											}
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											break;
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				case IBuffer.TYPE_DOUBLE:	double[] dLine = (double[])obj;
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											for (int k = 0; k < dLine.length; k++) {
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												int pixelValue = classes.getClassPosition((double)dLine[k]);
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												if(pixelValue >= 0)
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													histogram.incrementPxValue(band, pixelValue);
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											}
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											break;
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				switch(dataset.getDataType()) {
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					case IBuffer.TYPE_BYTE:
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						byte[] bLine = (byte[])obj;
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						for (int k = 0; k < bLine.length; k++) {
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							int pixelValue = classes.getClassPosition((double)bLine[k]);
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							if (pixelValue >= 0) histogram.incrementPxValue(band, pixelValue);
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						}
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						break;
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					case IBuffer.TYPE_SHORT:
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						short[] sLine = (short[])obj;
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						for (int k = 0; k < sLine.length; k++) {
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							int pixelValue = classes.getClassPosition((double)sLine[k]);
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							if (pixelValue >= 0) histogram.incrementPxValue(band, pixelValue);
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						}
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						break;
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					case IBuffer.TYPE_INT:
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						int[] iLine = (int[])obj;
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						for (int k = 0; k < iLine.length; k++) {
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							int pixelValue = classes.getClassPosition((double)iLine[k]);
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							if (pixelValue >= 0) histogram.incrementPxValue(band, pixelValue);
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						}
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						break;
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					case IBuffer.TYPE_FLOAT:
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						float[] fLine = (float[])obj;
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						for (int k = 0; k < fLine.length; k++) {
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							int pixelValue = classes.getClassPosition((double)fLine[k]);
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							if (pixelValue >= 0) histogram.incrementPxValue(band, pixelValue);
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						}
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						break;
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					case IBuffer.TYPE_DOUBLE:
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						double[] dLine = (double[])obj;
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						for (int k = 0; k < dLine.length; k++) {
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							int pixelValue = classes.getClassPosition((double)dLine[k]);
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							if (pixelValue >= 0) histogram.incrementPxValue(band, pixelValue);
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						}
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						break;
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				}
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				if (isCanceled()) return null;
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				percent = ((band * dataset.getHeight() + line) * 100) / (dataset.getBandCount() * dataset.getHeight());
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			}
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		}
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		}
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		percent = 100;
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		return histogram;
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	}
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