Package org.djutils.means

Class GeometricMean<V extends Number,W extends Number>

java.lang.Object

org.djutils.means.AbstractMean<GeometricMean<V,W>,V,W>

org.djutils.means.GeometricMean<V,W>

Type Parameters:

V - value type

W - weight type

public class GeometricMean<V extends Number,W extends Number>
extends AbstractMean<GeometricMean<V,W>,V,W>

Compute the geometric (weighted) mean of a set of values. Geometric mean can not handle negative or zero values.

Copyright (c) 2013-2016 Delft University of Technology, PO Box 5, 2600 AA, Delft, the Netherlands. All rights reserved.
BSD-style license. See DJUTILS License.

Author:

Alexander Verbraeck, Peter Knoppers

Constructor Summary

Constructors

Constructor	Description
GeometricMean()

Method Summary

Modifier and Type	Method	Description
final GeometricMean<V,W>	addImpl(V value, Number weight)	Adds a value with weight.
final double	getMean()	Returns the weighted mean of accumulated data.
final String	toString()

Methods inherited from class org.djutils.means.AbstractMean

add, add, add, add, add, add, add, add, add, getSum, getSumOfWeights, increment

Methods inherited from class java.lang.Object

clone, equals, finalize, getClass, hashCode, notify, notifyAll, wait, wait, wait

Constructor Details

GeometricMean

public GeometricMean()

Method Details

getMean

public final double getMean()

Description copied from class: AbstractMean

Returns the weighted mean of accumulated data.

Specified by:

getMean in class AbstractMean<GeometricMean<V extends Number,W extends Number>,V extends Number,W extends Number>

Returns:

double; weighted mean of accumulated data

addImpl

public final GeometricMean<V,W> addImpl(V value,
 Number weight)

Description copied from class: AbstractMean

Adds a value with weight.

Specified by:

addImpl in class AbstractMean<GeometricMean<V extends Number,W extends Number>,V extends Number,W extends Number>

Parameters:

value - V; the value

weight - Number; the weight

Returns:

this AbstractMean<MT, V, W>; for method chaining

toString

public final String toString()

Overrides:

toString in class Object