Examples of weka.core.Attribute.numValues()

weka.core.Attribute.numValues()
Returns the number of attribute values. Returns 0 for attributes that are not either nominal, string, or relation-valued. @return the number of attribute values

    
    // prepare arrays
    for (attIndex = 0; attIndex < m_numAtts; attIndex++) {
      Attribute attribute = (Attribute) instances.attribute(attIndex);
      for (j = 0; j < m_numClasses; j++) {
        m_Counts[j][attIndex] = new int[attribute.numValues()];
        m_tCounts[j][attIndex] = new int[attribute.numValues()];
      }
    }


    // Compute counts and priors

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    // prepare arrays
    for (attIndex = 0; attIndex < m_numAtts; attIndex++) {
      Attribute attribute = (Attribute) instances.attribute(attIndex);
      for (j = 0; j < m_numClasses; j++) {
        m_Counts[j][attIndex] = new int[attribute.numValues()];
        m_tCounts[j][attIndex] = new int[attribute.numValues()];
      }
    }


    // Compute counts and priors
    for(i = 0; i < m_numInsts; i++) {

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      int [][] countsPointer1 = m_Counts[classVal];
      for(attIndex = 0; attIndex < m_numAtts; attIndex++) {
        Attribute attribute = m_Instances.attribute(attIndex);
         // love those pointers for saving time
         int [] countsPointer2 = countsPointer1[attIndex];
        for(attVal = 0; attVal < attribute.numValues(); attVal++)  {
          countsPointer2[attVal] = 0;
        }
     }
     m_Priors[classVal] = 0;
   }

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         newVals.addElement(oldAtt.value(selection[i]));
      }
      instanceInfo.deleteAttributeAt(m_AttIndex.getIndex());
      instanceInfo.insertAttributeAt(new Attribute(oldAtt.name(), newVals),
            m_AttIndex.getIndex());
      m_NominalMapping = new int [oldAtt.numValues()];
      for (i = 0; i < m_NominalMapping.length; i++) {
         boolean found = false;
         for (int j = 0; j < selection.length; j++) {
            if (selection[j] == i) {
               m_NominalMapping[i] = j;

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    int indexOfFirstMissingValue = -1;


    if (attribute.isNominal()) {


      // For nominal attributes
      dist = new double[attribute.numValues()][data.numClasses()];
      for (int i = 0; i < data.numInstances(); i++) {
        Instance inst = data.instance(i);
        if (inst.isMissing(att)) {


          // Skip missing values at this stage

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  newVals.addElement(oldAtt.value(selection[i]));
      }
      instanceInfo.deleteAttributeAt(m_AttIndex.getIndex());
      instanceInfo.insertAttributeAt(new Attribute(oldAtt.name(), newVals),
              m_AttIndex.getIndex());
      m_NominalMapping = new int [oldAtt.numValues()];
      for (int i = 0; i < m_NominalMapping.length; i++) {
  boolean found = false;
  for (int j = 0; j < selection.length; j++) {
    if (selection[j] == i) {
      m_NominalMapping[i] = j;

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  // attribute index remains unchanged.
  newAtts.addElement(att); 
      } else {
    
  // Compute list of attribute values
  newVals = new FastVector(att.numValues());
  for (int i = 0; i < att.numValues(); i++) {
          newVals.addElement(att.value(i)); 
  }
  newAtts.addElement(new Attribute(att.name(), newVals));
      }

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  newAtts.addElement(att); 
      } else {
    
  // Compute list of attribute values
  newVals = new FastVector(att.numValues());
  for (int i = 0; i < att.numValues(); i++) {
          newVals.addElement(att.value(i)); 
  }
  newAtts.addElement(new Attribute(att.name(), newVals));
      }
    }

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      FastVector attInfo = new FastVector();
      for (int i = 0; i < miningSchemaI.numAttributes(); i++) {
        Attribute tempA = miningSchemaI.attribute(i);
        if (tempA.isString()) {
          FastVector valueVector = new FastVector();
          for (int j = 0; j < tempA.numValues(); j++) {
            valueVector.addElement(tempA.value(j));
          }
          Attribute newAtt = new Attribute(tempA.name(), valueVector);
          attInfo.addElement(newAtt);
        } else {

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                  incomingAtt.toString() + ".");
            }
          }


          // check nominal values (number, names...)
          if (miningSchemaAtt.numValues() != incomingAtt.numValues()) {
            String warningString = "[MappingInfo] WARNING: incoming nominal attribute "
              + incomingAtt.name() + " does not have the same "
              + "number of values as the corresponding mining "
              + "schema attribute.";
            if (m_log != null) {

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