jhplot.math.num.pdf
Class ContinuousDistribution

java.lang.Object
  jhplot.math.num.pdf.ContinuousDistribution

All Implemented Interfaces:

Distribution

Direct Known Subclasses:

Beta, Cauchy, ChiSquared, Exponential, FDistribution, Gamma, Laplace, Logistic, LogNormal, Normal, Rayleigh, TDistribution, Uniform, Weibull

public abstract class ContinuousDistribution
extends Object
implements Distribution

Base continuous distribution.

Version:

$Revision: 1.2 $ $Date: 2007/10/25 04:44:10 $

Constructor Summary

ContinuousDistribution()

Method Summary

abstract double	cumulativeProbability(double x) The CDF for this distribution.
abstract double	inverseCumulativeProbability(double p) The inverse CDF for this distribution.

Methods inherited from class java.lang.Object

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

Constructor Detail

ContinuousDistribution

public ContinuousDistribution()

Method Detail

cumulativeProbability

public abstract double cumulativeProbability(double x)
                                      throws NumericException

The CDF for this distribution. This method returns P(X < x).

Parameters:

x - the value at which the CDF is evaluated.

Returns:

CDF for this distribution.

Throws:

NumericException - if the cumulative probability can not be computed.

inverseCumulativeProbability

public abstract double inverseCumulativeProbability(double p)
                                             throws NumericException

The inverse CDF for this distribution. This method returns x such that, P(X < x) = p.

Parameters:

p - the cumulative probability.

Returns:

x

Throws:

NumericException - if the inverse cumulative probability can not be computed.