org.apache.commons.math.stat.descriptive.moment

Class VectorialMean

java.lang.Object

org.apache.commons.math.stat.descriptive.moment.VectorialMean

All Implemented Interfaces:

java.io.Serializable

public class VectorialMean
extends java.lang.Object
implements java.io.Serializable

Returns the arithmetic mean of the available vectors.

Since:

1.2

Version:

$Revision: 922714 $ $Date: 2010-03-14 02:35:14 +0100 (dim. 14 mars 2010) $

See Also:

Serialized Form

Field Summary

Fields

Modifier and Type	Field and Description
private Mean[]	means Means for each component.
private static long	serialVersionUID Serializable version identifier

Constructor Summary

Constructors

Constructor and Description
VectorialMean(int dimension) Constructs a VectorialMean.

Method Summary

Methods

Modifier and Type	Method and Description
boolean	equals(java.lang.Object obj)
long	getN() Get the number of vectors in the sample.
double[]	getResult() Get the mean vector.
int	hashCode()
void	increment(double[] v) Add a new vector to the sample.

Methods inherited from class java.lang.Object

clone, finalize, getClass, notify, notifyAll, toString, wait, wait, wait

Field Detail

serialVersionUID

private static final long serialVersionUID

Serializable version identifier

See Also:

Constant Field Values

means

private final Mean[] means

Means for each component.

Constructor Detail

VectorialMean

public VectorialMean(int dimension)

Constructs a VectorialMean.

Parameters:

dimension - vectors dimension

Method Detail

increment

public void increment(double[] v)
               throws DimensionMismatchException

Add a new vector to the sample.

Parameters:

v - vector to add

Throws:

DimensionMismatchException - if the vector does not have the right dimension

getResult

public double[] getResult()

Get the mean vector.

Returns:

mean vector

getN

public long getN()

Get the number of vectors in the sample.

Returns:

number of vectors in the sample

hashCode

public int hashCode()

Overrides:

hashCode in class java.lang.Object

equals

public boolean equals(java.lang.Object obj)

Overrides:

equals in class java.lang.Object