Application: gvSIG desktop » gvSIG tools: ToolBox

package es.unex.sextante.gridTools.changeNoDataValue;

import es.unex.sextante.additionalInfo.AdditionalInfoNumericalValue;

import es.unex.sextante.core.GeoAlgorithm;

import es.unex.sextante.core.Sextante;

import es.unex.sextante.dataObjects.IRasterLayer;

import es.unex.sextante.exceptions.GeoAlgorithmExecutionException;

import es.unex.sextante.exceptions.RepeatedParameterNameException;

public class ChangeNoDataValueAlgorithm

         extends

            GeoAlgorithm {

   public static final String  RESULT        = "RESULT";

   public static final String  INPUT         = "INPUT";

   private static final String NO_DATA_VALUE = "NO_DATA_VALUE";

   @Override

   public void defineCharacteristics() {

      setName(Sextante.getText("ChangeNoDataValue"));

      setGroup(Sextante.getText("Basic_tools_for_raster_layers"));

      setUserCanDefineAnalysisExtent(false);

      try {

         m_Parameters.addInputRasterLayer(INPUT, Sextante.getText("Input_layer"), true);

         m_Parameters.addNumericalValue(NO_DATA_VALUE, Sextante.getText("NoDataValue"), -99999.,

                  AdditionalInfoNumericalValue.NUMERICAL_VALUE_DOUBLE);

         addOutputRasterLayer(RESULT, Sextante.getText("Result"));

      }

      catch (final RepeatedParameterNameException e) {

         Sextante.addErrorToLog(e);

      }

   }

   @Override

   public boolean processAlgorithm() throws GeoAlgorithmExecutionException {

      final IRasterLayer layer = m_Parameters.getParameterValueAsRasterLayer(INPUT);

      final double dNoData = m_Parameters.getParameterValueAsDouble(NO_DATA_VALUE);

      layer.setFullExtent();

      final IRasterLayer result = getNewRasterLayer(RESULT, layer.getName(), layer.getDataType(), layer.getLayerGridExtent());

      result.assign(layer);

      result.setNoDataValue(dNoData);

      return !m_Task.isCanceled();

   }

}