org.jfree.data.function

Class NormalDistributionFunction2D

java.lang.Object

org.jfree.data.function.NormalDistributionFunction2D

All Implemented Interfaces:

java.io.Serializable, Function2D

public class NormalDistributionFunction2D
extends java.lang.Object
implements Function2D, java.io.Serializable

A normal distribution function. See http://en.wikipedia.org/wiki/Normal_distribution.

See Also:

Serialized Form

Constructor Summary

Constructors

Constructor and Description
NormalDistributionFunction2D(double mean, double std) Constructs a new normal distribution 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	getMean() Returns the mean for the function.
double	getStandardDeviation() Returns the standard deviation for the function.
double	getValue(double x) Returns the function value.
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

NormalDistributionFunction2D

public NormalDistributionFunction2D(double mean,
                                    double std)

Constructs a new normal distribution function.

Parameters:

mean - the mean.

std - the standard deviation (> 0).

Method Detail

getMean

public double getMean()

Returns the mean for the function.

Returns:

The mean.

getStandardDeviation

public double getStandardDeviation()

Returns the standard deviation for the function.

Returns:

The standard deviation.

getValue

public double getValue(double x)

Returns the function value.

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.