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Posted to issues@commons.apache.org by "Gilles (Commented) (JIRA)" <ji...@apache.org> on 2012/02/18 21:49:59 UTC
[jira] [Commented] (MATH-747) Several Constructors for
PoissonDistributionImpl are broken
[ https://issues.apache.org/jira/browse/MATH-747?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=13211070#comment-13211070 ]
Gilles commented on MATH-747:
-----------------------------
You are right.
I suggest that you try the snapshot of the upcoming version 3.0 (there won't be a 2.2.1 release).
> Several Constructors for PoissonDistributionImpl are broken
> -----------------------------------------------------------
>
> Key: MATH-747
> URL: https://issues.apache.org/jira/browse/MATH-747
> Project: Commons Math
> Issue Type: Bug
> Affects Versions: 2.2
> Reporter: Steve Appling
> Priority: Critical
> Fix For: 2.2.1
>
>
> 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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