root / org.gvsig.toolbox / trunk / org.gvsig.toolbox / org.gvsig.toolbox.algorithm / src / main / java / es / unex / sextante / gridTools / invertNoData / InvertNoDataAlgorithm.java @ 59
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package es.unex.sextante.gridTools.invertNoData; |
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import es.unex.sextante.core.GeoAlgorithm; |
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import es.unex.sextante.core.Sextante; |
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import es.unex.sextante.dataObjects.IRasterLayer; |
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import es.unex.sextante.exceptions.GeoAlgorithmExecutionException; |
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import es.unex.sextante.exceptions.RepeatedParameterNameException; |
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public class InvertNoDataAlgorithm |
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extends
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GeoAlgorithm { |
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public static final String RESULT = "RESULT"; |
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public static final String INPUT = "INPUT"; |
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@Override
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public void defineCharacteristics() { |
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setName(Sextante.getText("Invert_mask"));
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setGroup(Sextante.getText("Basic_tools_for_raster_layers"));
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setUserCanDefineAnalysisExtent(true);
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try {
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m_Parameters.addInputRasterLayer(INPUT, Sextante.getText("Layer"), true); |
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addOutputRasterLayer(RESULT, Sextante.getText("Inverted_mask"));
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} |
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catch (final RepeatedParameterNameException e) { |
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Sextante.addErrorToLog(e); |
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} |
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} |
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@Override
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public boolean processAlgorithm() throws GeoAlgorithmExecutionException { |
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int x, y;
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int iNX, iNY;
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double dValue;
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IRasterLayer input; |
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input = m_Parameters.getParameterValueAsRasterLayer(INPUT); |
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final IRasterLayer result = getNewRasterLayer(RESULT, Sextante.getText("Inverted_mask"), IRasterLayer.RASTER_DATA_TYPE_BYTE); |
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result.setNoDataValue(0.0);
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input.setWindowExtent(result.getWindowGridExtent()); |
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iNX = result.getWindowGridExtent().getNX(); |
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iNY = result.getWindowGridExtent().getNY(); |
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for (y = 0; (y < iNY) && setProgress(y, iNY); y++) { |
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for (x = 0; x < iNX; x++) { |
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dValue = input.getCellValueAsDouble(x, y); |
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if (input.isNoDataValue(dValue)) {
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result.setCellValue(x, y, 1.0);
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} |
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else {
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result.setNoData(x, y); |
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} |
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} |
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} |
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return !m_Task.isCanceled();
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} |
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} |