| gvSIG desktop 1

  /**

   * Calcula el m?nimo y el m?ximo del histograma previamente.

   * @return double[] con el m?nimo y el m?ximo.

   */

  private double[] getLimits() {

  	double max = Double.MIN_VALUE;

  	double min = Double.MAX_VALUE;

  	double value = 0;

		switch (getDataType()) {

			case IBuffer.TYPE_BYTE:

				for (int i = 0; i < getBandCount(); i++)

					for (int r = 0; r < getHeight(); r++)

						for (int c = 0; c < getWidth(); c++) {

							value = (double) (getElemByte(r, c, i) & 0xff);

							if (value > max) max = value;

							if (value < min) min = value;

						}

				break;

			case IBuffer.TYPE_SHORT:

				for (int i = 0; i < getBandCount(); i++)

					for (int r = 0; r < getHeight(); r++)

						for (int c = 0; c < getWidth(); c++) {

							value = (double) (getElemShort(r, c, i) & 0xffff);

							if (value > max) max = value;

							if (value < min) min = value;

						}

				break;

			case IBuffer.TYPE_INT:

				for (int i = 0; i < getBandCount(); i++)

					for (int r = 0; r < getHeight(); r++)

						for (int c = 0; c < getWidth(); c++) {

							value = (double) (getElemInt(r, c, i) & 0xffffffff);

							if (value > max) max = value;

							if (value < min) min = value;

						}

				break;

			case IBuffer.TYPE_FLOAT:

				for (int i = 0; i < getBandCount(); i++)

					for (int r = 0; r < getHeight(); r++)

						for (int c = 0; c < getWidth(); c++) {

							value =  (double) getElemFloat(r, c, i);

							if (value > max) max = value;

							if (value < min) min = value;

						}

				break;

			case IBuffer.TYPE_DOUBLE:

				for (int i = 0; i < getBandCount(); i++)

					for (int r = 0; r < getHeight(); r++)

						for (int c = 0; c < getWidth(); c++) {

							value = getElemDouble(r, c, i);

							if (value > max) max = value;

							if (value < min) min = value;

						}

				break;

		}

		double[] values = new double[2];

		values[0] = min;

		values[1] = max;

  	return values;

  }

  /*

   * (non-Javadoc)

   * @see org.gvsig.raster.driver.datasetproperties.IHistogramable#getHistogram()

   */

		double[] limits = getLimits();

			hist = new Histogram(getBandCount(), 255, limits[0], limits[1]);

			hist = new Histogram(getBandCount(), RasterLibrary.defaultNumberOfClasses, limits[0], limits[1]);