org.knime.base.node.preproc.groupby.aggregation
Class NumericOperators.StdDeviationOperator

java.lang.Object
  extended by org.knime.base.node.preproc.groupby.aggregation.AggregationOperator
      extended by org.knime.base.node.preproc.groupby.aggregation.NumericOperators.VarianceOperator
          extended by org.knime.base.node.preproc.groupby.aggregation.NumericOperators.StdDeviationOperator
Enclosing class:
NumericOperators

final class NumericOperators.StdDeviationOperator
extends NumericOperators.VarianceOperator

Returns the standard deviation per group.

Author:
Tobias Koetter, University of Konstanz

Field Summary
 
Fields inherited from class org.knime.base.node.preproc.groupby.aggregation.AggregationOperator
CONCATENATOR
 
Constructor Summary
NumericOperators.StdDeviationOperator(int maxUniqueValues)
          Constructor for class StdDeviationOperator.
 
Method Summary
 AggregationOperator createInstance(DataColumnSpec origColSpec, int maxUniqueValues)
          Creates a new instance of this operator.
protected  DataCell getResultInternal()
          
 
Methods inherited from class org.knime.base.node.preproc.groupby.aggregation.NumericOperators.VarianceOperator
computeInternal, getDataType, resetInternal
 
Methods inherited from class org.knime.base.node.preproc.groupby.aggregation.AggregationOperator
compute, createColumnSpec, getLabel, getMaxUniqueValues, getResult, getShortLabel, isNumerical, isSkipped, isUsesLimit, reset
 
Methods inherited from class java.lang.Object
clone, equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait
 

Constructor Detail

NumericOperators.StdDeviationOperator

NumericOperators.StdDeviationOperator(int maxUniqueValues)
Constructor for class StdDeviationOperator.

Parameters:
maxUniqueValues - the maximum number of unique values
Method Detail

createInstance

public AggregationOperator createInstance(DataColumnSpec origColSpec,
                                          int maxUniqueValues)
Creates a new instance of this operator.

Overrides:
createInstance in class NumericOperators.VarianceOperator
Parameters:
origColSpec - the DataColumnSpec of the original column
maxUniqueValues - the maximum number of unique values
Returns:
a new instance of this operator

getResultInternal

protected DataCell getResultInternal()

Overrides:
getResultInternal in class NumericOperators.VarianceOperator
Returns:
the result DataCell


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University of Konstanz, Germany.
Chair for Bioinformatics and Information Mining, Prof. Dr. Michael R. Berthold.
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