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Posted to issues@commons.apache.org by "Luc Maisonobe (Resolved) (JIRA)" <ji...@apache.org> on 2011/10/01 15:55:34 UTC

[jira] [Resolved] (MATH-380) Need to (re)initialize dYdY0 for multiple integrate with FirstOrderIntegratorWithJacobians

     [ https://issues.apache.org/jira/browse/MATH-380?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel ]

Luc Maisonobe resolved MATH-380.
--------------------------------

    Resolution: Fixed

fixed in subversion repository as of r1176745.
                
> Need to (re)initialize dYdY0 for multiple integrate with FirstOrderIntegratorWithJacobians
> ------------------------------------------------------------------------------------------
>
>                 Key: MATH-380
>                 URL: https://issues.apache.org/jira/browse/MATH-380
>             Project: Commons Math
>          Issue Type: Bug
>    Affects Versions: 2.1
>            Reporter: Pascal Parraud
>            Assignee: Luc Maisonobe
>            Priority: Minor
>             Fix For: 3.0
>
>
> There is a lack in the method integrate of FirstOrderIntegratorWithJacobians. The jacobian DYDY0 can't be initialized by the user, unlike DFDP with DF0DP.
> So, for several successive integrations, the matrix is reinitialized to identity and that is not what we might want.

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