JFreeChart 1.0.14-redhat-2

org.jfree.data.function
Class NormalDistributionFunction2D

java.lang.Object
  extended by org.jfree.data.function.NormalDistributionFunction2D
All Implemented Interfaces:
Serializable, Function2D

public class NormalDistributionFunction2D
extends Object
implements Function2D, Serializable

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

See Also:
Serialized Form

Constructor Summary
NormalDistributionFunction2D(double mean, double std)
          Constructs a new normal distribution function.
 
Method Summary
 boolean equals(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
clone, finalize, 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(Object obj)
Tests this function for equality with an arbitrary object.

Overrides:
equals in class 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 Object
Returns:
A hash code.

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