Package nl.tudelft.simulation.jstats.distributions

Class DistWeibull

java.lang.Object

nl.tudelft.simulation.jstats.distributions.Dist

nl.tudelft.simulation.jstats.distributions.DistContinuous

nl.tudelft.simulation.jstats.distributions.DistWeibull

All Implemented Interfaces:

Serializable

public class DistWeibull
extends DistContinuous

The Weibull distribution with a shape parameter α and a scale parameter β. For more information on this distribution see https://mathworld.wolfram.com/WeibullDistribution.html

Copyright (c) 2002-2024 Delft University of Technology, Jaffalaan 5, 2628 BX Delft, the Netherlands. All rights reserved. See for project information https://simulation.tudelft.nl. The DSOL project is distributed under a three-clause BSD-style license, which can be found at https://https://simulation.tudelft.nl/dsol/docs/latest/license.html.

Author:

Peter Jacobs , Alexander Verbraeck

See Also:

• Serialized Form

Field Summary

Fields inherited from class nl.tudelft.simulation.jstats.distributions.Dist

stream

Constructor Summary

Constructors

Constructor	Description
DistWeibull(StreamInterface stream, double alpha, double beta)	constructs a new Weibull distribution.

Method Summary

Modifier and Type	Method	Description
double	draw()	draws the next stream value according to the probability of this this distribution.
double	getAlpha()	Return the shape parameter α.
double	getBeta()	Return the scale parameter β.
double	getProbabilityDensity(double x)	returns the probability density value of a value x.
String	toString()

Methods inherited from class nl.tudelft.simulation.jstats.distributions.Dist

getStream, setStream

Methods inherited from class java.lang.Object

clone, equals, finalize, getClass, hashCode, notify, notifyAll, wait, wait, wait

Constructor Details

DistWeibull

public DistWeibull(StreamInterface stream,
 double alpha,
 double beta)

constructs a new Weibull distribution.

Parameters:

stream - StreamInterface; the random number stream

alpha - double; the shape parameter α

beta - double; the scale parameter β

Method Details

draw

public double draw()

draws the next stream value according to the probability of this this distribution.

Specified by:

draw in class DistContinuous

Returns:

the next double value drawn.

getProbabilityDensity

public double getProbabilityDensity(double x)

returns the probability density value of a value x.

Specified by:

getProbabilityDensity in class DistContinuous

Parameters:

x - double; the value for which the density function needs to be calculated

Returns:

double; the probability density for value x

getAlpha

public double getAlpha()

Return the shape parameter α.

Returns:

double; the shape parameter α

getBeta

public double getBeta()

Return the scale parameter β.

Returns:

double; the scale parameter β

toString

public String toString()

Overrides:

toString in class Object