Application: gvSIG desktop » gvSIG tools: ToolBox

package es.unex.sextante.tables.tableBasicStats;

import java.text.DecimalFormat;

import es.unex.sextante.core.GeoAlgorithm;

import es.unex.sextante.core.Sextante;

import es.unex.sextante.dataObjects.IRecord;

import es.unex.sextante.dataObjects.IRecordsetIterator;

import es.unex.sextante.dataObjects.ITable;

import es.unex.sextante.docEngines.html.HTMLDoc;

import es.unex.sextante.exceptions.GeoAlgorithmExecutionException;

import es.unex.sextante.exceptions.OptionalParentParameterException;

import es.unex.sextante.exceptions.RepeatedParameterNameException;

import es.unex.sextante.exceptions.UndefinedParentParameterNameException;

import es.unex.sextante.math.simpleStats.SimpleStats;

public class TableBasicStatsAlgorithm

         extends

            GeoAlgorithm {

   public static final String TABLE             = "TABLE";

   public static final String FIELD             = "FIELD";

   public static final String STATS             = "STATS";

   public static final String MEAN              = "MEAN";

   public static final String MEAN_SQUARED      = "MEAN_SQUARED";

   public static final String MIN               = "MIN";

   public static final String MAX               = "MAX";

   public static final String VARIANCE          = "VARIANCE";

   public static final String SUM               = "SUM";

   public static final String COEF_OF_VARIATION = "COEF_OF_VARIATION";

   @Override

   public boolean processAlgorithm() throws GeoAlgorithmExecutionException {

      int i;

      int iField;

      long iCount;

      double dValue;

      ITable table;

      final SimpleStats stats = new SimpleStats();

      table = m_Parameters.getParameterValueAsTable(TABLE);

      iField = m_Parameters.getParameterValueAsInt(FIELD);

      i = 0;

      iCount = table.getRecordCount();

      final IRecordsetIterator iter = table.iterator();

      while (iter.hasNext() && setProgress(i, (int) iCount)) {

         final IRecord record = iter.next();

         try {

            dValue = Double.parseDouble(record.getValue(iField).toString());

            stats.addValue(dValue);

         }

         catch (final NumberFormatException e) {}

         i++;

      }

      iter.close();

      if (m_Task.isCanceled()) {

         return false;

      }

      else {

         final DecimalFormat df = new DecimalFormat("##.###");

         final HTMLDoc doc = new HTMLDoc();

         doc.open(Sextante.getText("Statistics"));

         doc.addHeader(Sextante.getText("Basic_statistics"), 2);

         doc.startUnorderedList();

         doc.addListElement(Sextante.getText("Mean_value") + ": " + df.format(stats.getMean()));

         doc.addListElement(Sextante.getText("Mean_squared_value") + ": " + df.format(stats.getRMS()));

         doc.addListElement(Sextante.getText("Min_value") + ": " + df.format(stats.getMin()));

         doc.addListElement(Sextante.getText("Max_value") + ": " + df.format(stats.getMax()));

         doc.addListElement(Sextante.getText("Variance") + ": " + df.format(stats.getVariance()));

         doc.addListElement(Sextante.getText("Total_sum") + ": " + df.format(stats.getSum()));

         doc.addListElement(Sextante.getText("Coefficient_of_variation") + ": " + df.format(stats.getCoeffOfVar()));

         doc.closeUnorderedList();

         doc.close();

         addOutputText("STATS", Sextante.getText("Statistics") + "[" + table.getName() + "]", doc.getHTMLCode());

         addOutputNumericalValue(MEAN, Sextante.getText("Mean_value"));

         addOutputNumericalValue(MEAN_SQUARED, Sextante.getText("Mean_squared_value"));

         addOutputNumericalValue(MIN, Sextante.getText("Minimum_value"));

         addOutputNumericalValue(MAX, Sextante.getText("Maximum_value"));

         addOutputNumericalValue(VARIANCE, Sextante.getText("Variance"));

         addOutputNumericalValue(SUM, Sextante.getText("Total_sum"));

         addOutputNumericalValue(COEF_OF_VARIATION, Sextante.getText("Coefficient_of_variation"));

         return true;

      }

   }

   @Override

   public void defineCharacteristics() {

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

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

      try {

         m_Parameters.addInputTable(TABLE, Sextante.getText("Table"), true);

         m_Parameters.addTableField(FIELD, Sextante.getText("Field"), TABLE);

         addOutputText(STATS, Sextante.getText("Statistics"));

         addOutputNumericalValue(MEAN, Sextante.getText("Mean_value"));

         addOutputNumericalValue(MEAN_SQUARED, Sextante.getText("Mean_squared_value"));

         addOutputNumericalValue(MIN, Sextante.getText("Minimum_value"));

         addOutputNumericalValue(MAX, Sextante.getText("Maximum_value"));

         addOutputNumericalValue(VARIANCE, Sextante.getText("Variance"));

         addOutputNumericalValue(SUM, Sextante.getText("Total_sum"));

         addOutputNumericalValue(COEF_OF_VARIATION, Sextante.getText("Coefficient_of_variation"));

      }

      catch (final RepeatedParameterNameException e) {

         Sextante.addErrorToLog(e);

      }

      catch (final UndefinedParentParameterNameException e) {

         Sextante.addErrorToLog(e);

      }

      catch (final OptionalParentParameterException e) {

         Sextante.addErrorToLog(e);

      }

   }

}