org.jfree.data.function

Class PowerFunction2D

java.lang.Object

org.jfree.data.function.PowerFunction2D

All Implemented Interfaces:

java.io.Serializable, Function2D

public class PowerFunction2D
extends java.lang.Object
implements Function2D, java.io.Serializable

A function of the form y = a * x ^ b.

See Also:

Serialized Form

Constructor Summary

Constructors

Constructor and Description
PowerFunction2D(double a, double b) Creates a new power function.

Method Summary

Modifier and Type	Method and Description
boolean	equals(java.lang.Object obj) Tests this function for equality with an arbitrary object.
double	getA() Returns the 'a' coefficient that was specified in the constructor.
double	getB() Returns the 'b' coefficient that was specified in the constructor.
double	getValue(double x) Returns the value of the function for a given input ('x').
int	hashCode() Returns a hash code for this instance.

Methods inherited from class java.lang.Object

getClass, notify, notifyAll, toString, wait, wait, wait

Constructor Detail

PowerFunction2D

public PowerFunction2D(double a,
                       double b)

Creates a new power function.

Parameters:

a - the 'a' coefficient.

b - the 'b' coefficient.

Method Detail

getA

public double getA()

Returns the 'a' coefficient that was specified in the constructor.

Returns:

The 'a' coefficient.

Since:

1.0.14

getB

public double getB()

Returns the 'b' coefficient that was specified in the constructor.

Returns:

The 'b' coefficient.

Since:

1.0.14

getValue

public double getValue(double x)

Returns the value of the function for a given input ('x').

Specified by:

getValue in interface Function2D

Parameters:

x - the x-value.

Returns:

The value.

equals

public boolean equals(java.lang.Object obj)

Tests this function for equality with an arbitrary object.

Overrides:

equals in class java.lang.Object

Parameters:

obj - the object (null permitted).

Returns:

A boolean.

hashCode

public int hashCode()

Returns a hash code for this instance.

Overrides:

hashCode in class java.lang.Object

Returns:

A hash code.