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From "Gilles (Resolved) (JIRA)" <>
Subject [jira] [Resolved] (MATH-747) Several Constructors for PoissonDistributionImpl are broken
Date Sat, 18 Feb 2012 20:51:59 GMT


Gilles resolved MATH-747.

       Resolution: Won't Fix
    Fix Version/s:     (was: 2.2.1)

The code does not exist anymore in "trunk".

> Several Constructors for PoissonDistributionImpl are broken
> -----------------------------------------------------------
>                 Key: MATH-747
>                 URL:
>             Project: Commons Math
>          Issue Type: Bug
>    Affects Versions: 2.2
>            Reporter: Steve Appling
>            Priority: Critical
>             Fix For: 3.0
> Only the constructor PoissonDistributionImpl(double) seems to actually work.  All of
the others cause a NullPointerException.  The working one creates a default NormalDistribution,
but all of the others just leave the member "normal" set to null and cause an NPE in the constructor.
> I can't even find a work around to construct a PoissonDistributionImpl with both a specified
mean and an epsilon, since there is no way to set epsilon after creation and the constructor
PoissonDistributionImpl(double p, double epsilon) does not work.

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