root / org.gvsig.toolbox / trunk / org.gvsig.toolbox / org.gvsig.toolbox.algorithm / src / main / java / es / unex / sextante / gridStatistics / base / NeighborhoodStatsExtendedBaseAlgorithm.java @ 59
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package es.unex.sextante.gridStatistics.base; |
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import es.unex.sextante.additionalInfo.AdditionalInfoNumericalValue; |
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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 abstract class NeighborhoodStatsExtendedBaseAlgorithm |
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extends
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GeoAlgorithm { |
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public static final String RADIUS = "RADIUS"; |
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public static final String LAYER = "LAYER"; |
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public static final String VALUE = "VALUE"; |
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public static final String FORCE_NODATA = "NODATA"; |
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public static final String RESULT = "RESULT"; |
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protected double NO_DATA; |
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private int m_iRadius; |
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private boolean m_bForceNoData; |
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private boolean m_bIsValidCell[][]; |
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private IRasterLayer m_window;
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protected double m_dValues[]; |
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protected double m_dValue; |
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@Override
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public void defineCharacteristics() { |
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setUserCanDefineAnalysisExtent(false);
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try {
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m_Parameters.addInputRasterLayer(LAYER, Sextante.getText("Layer"), true); |
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m_Parameters.addNumericalValue(RADIUS, Sextante.getText("Radius"), AdditionalInfoNumericalValue.NUMERICAL_VALUE_INTEGER,
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1, 1, 20); |
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m_Parameters.addNumericalValue(VALUE, Sextante.getText("Value"), 0, AdditionalInfoNumericalValue.NUMERICAL_VALUE_DOUBLE); |
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m_Parameters.addBoolean(FORCE_NODATA, Sextante.getText("Force_no-data_value"), true); |
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addOutputRasterLayer(RESULT, this.getName());
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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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int iValidCells = 0; |
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NO_DATA = m_OutputFactory.getDefaultNoDataValue(); |
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m_iRadius = m_Parameters.getParameterValueAsInt(RADIUS); |
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m_window = m_Parameters.getParameterValueAsRasterLayer(LAYER); |
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m_dValue = m_Parameters.getParameterValueAsDouble(VALUE); |
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m_bForceNoData = m_Parameters.getParameterValueAsBoolean(FORCE_NODATA); |
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m_window.setFullExtent(); |
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final IRasterLayer result = getNewRasterLayer(RESULT, this.getName(), IRasterLayer.RASTER_DATA_TYPE_DOUBLE, |
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m_window.getWindowGridExtent()); |
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result.setNoDataValue(NO_DATA); |
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result.assignNoData(); |
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iNX = m_window.getNX(); |
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iNY = m_window.getNY(); |
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m_bIsValidCell = new boolean[2 * m_iRadius + 1][2 * m_iRadius + 1]; |
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for (y = -m_iRadius; y < m_iRadius + 1; y++) { |
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for (x = -m_iRadius; x < m_iRadius + 1; x++) { |
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final double dDist = Math.sqrt(x * x + y * y); |
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if (dDist < m_iRadius) {
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m_bIsValidCell[x + m_iRadius][y + m_iRadius] = true;
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iValidCells++; |
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} |
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else {
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m_bIsValidCell[x + m_iRadius][y + m_iRadius] = false;
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} |
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} |
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} |
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m_dValues = new double[iValidCells]; |
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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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if (setNeighborhoodValues(x, y)) {
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result.setCellValue(x, y, processValues()); |
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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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private boolean setNeighborhoodValues(final int iX, |
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final int iY) { |
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int x, y;
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int iCell = 0; |
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double dValue;
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for (y = -m_iRadius; y < m_iRadius + 1; y++) { |
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for (x = -m_iRadius; x < m_iRadius + 1; x++) { |
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if (m_bIsValidCell[x + m_iRadius][y + m_iRadius]) {
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dValue = m_window.getCellValueAsDouble(iX + x, iY + y); |
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if (!m_window.isNoDataValue(dValue)) {
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m_dValues[iCell] = dValue; |
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} |
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else {
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if (m_bForceNoData) {
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return false; |
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} |
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else {
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m_dValues[iCell] = NO_DATA; |
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} |
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} |
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iCell++; |
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} |
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} |
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} |
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return true; |
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} |
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protected abstract double processValues(); |
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} |