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java.lang.Objectorg.apache.commons.math.stat.descriptive.AbstractUnivariateStatistic
public abstract class AbstractUnivariateStatistic
Abstract base class for all implementations of the
UnivariateStatistic interface.
Provides a default implementation of evaluate(double[]),
delegating to evaluate(double[], int, int) in the natural way.
Also includes a test method that performs generic parameter
validation for the evaluate methods.
| Constructor Summary | |
|---|---|
AbstractUnivariateStatistic()
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| Method Summary | |
|---|---|
abstract UnivariateStatistic |
copy()
Returns a copy of the statistic with the same internal state. |
double |
evaluate(double[] values)
Returns the result of evaluating the statistic over the input array. |
abstract double |
evaluate(double[] values,
int begin,
int length)
Returns the result of evaluating the statistic over the specified entries in the input array. |
protected boolean |
test(double[] values,
double[] weights,
int begin,
int length)
This method is used by evaluate(double[], double[], int, int) methods
to verify that the begin and length parameters designate a subarray of positive length
and the weights are all non-negative, non-NaN, finite, and not all zero. |
protected boolean |
test(double[] values,
int begin,
int length)
This method is used by evaluate(double[], int, int) methods
to verify that the input parameters designate a subarray of positive length. |
| Methods inherited from class java.lang.Object |
|---|
clone, equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait |
| Constructor Detail |
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public AbstractUnivariateStatistic()
| Method Detail |
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public double evaluate(double[] values)
evaluate in interface UnivariateStatisticvalues - input array
public abstract double evaluate(double[] values,
int begin,
int length)
evaluate in interface UnivariateStatisticvalues - the input arraybegin - the index of the first element to includelength - the number of elements to include
public abstract UnivariateStatistic copy()
copy in interface UnivariateStatistic
protected boolean test(double[] values,
int begin,
int length)
evaluate(double[], int, int) methods
to verify that the input parameters designate a subarray of positive length.
true iff the parameters designate a subarray of
positive lengthIllegalArgumentException if the array is null or
or the indices are invalidfalselength is 0.
values - the input arraybegin - index of the first array element to includelength - the number of elements to include
IllegalArgumentException - if the indices are invalid or the array is null
protected boolean test(double[] values,
double[] weights,
int begin,
int length)
evaluate(double[], double[], int, int) methods
to verify that the begin and length parameters designate a subarray of positive length
and the weights are all non-negative, non-NaN, finite, and not all zero.
true iff the parameters designate a subarray of
positive length and the weights array contains legitimate values.IllegalArgumentException if any of the following are true:
falselength is 0.
values - the input arrayweights - the weights arraybegin - index of the first array element to includelength - the number of elements to include
IllegalArgumentException - if the indices are invalid or the array is null
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