Package org.apache.commons.math.optimization

Class RealPointValuePair

java.lang.Object

org.apache.commons.math.optimization.RealPointValuePair

All Implemented Interfaces:

Serializable

public class RealPointValuePair
extends Object
implements Serializable

This class holds a point and the value of an objective function at this point.

This is a simple immutable container.

Since:

2.0

See Also:

VectorialPointValuePair, MultivariateRealFunction, Serialized Form

Constructor Summary

Constructors

Constructor	Description
RealPointValuePair(double[] point, double value)	Build a point/objective function value pair.
RealPointValuePair(double[] point, double value, boolean copyArray)	Build a point/objective function value pair.

Method Summary

Modifier and Type	Method	Description
double[]	getPoint()	Get the point.
double[]	getPointRef()	Get a reference to the point.
double	getValue()	Get the value of the objective function.

Methods inherited from class java.lang.Object

equals, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait

Constructor Detail

RealPointValuePair

public RealPointValuePair(double[] point,
                          double value)

Build a point/objective function value pair.

Parameters:

point - point coordinates (the built instance will store a copy of the array, not the array passed as argument)

value - value of an objective function at the point

RealPointValuePair

public RealPointValuePair(double[] point,
                          double value,
                          boolean copyArray)

Build a point/objective function value pair.

Parameters:

point - point coordinates (the built instance will store a copy of the array, not the array passed as argument)

value - value of an objective function at the point

copyArray - if true, the input array will be copied, otherwise it will be referenced

Method Detail

getPoint

public double[] getPoint()

Get the point.

Returns:

a copy of the stored point

getPointRef

public double[] getPointRef()

Get a reference to the point.

This method is provided as a convenience to avoid copying the array, the elements of the array should not be modified.

Returns:

a reference to the internal array storing the point

getValue

public double getValue()

Get the value of the objective function.

Returns:

the stored value of the objective function