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From "Thomas Neidhart (JIRA)" <j...@apache.org>
Subject [jira] [Commented] (MATH-1004) Inversion of diagonal matrix
Date Sat, 12 Oct 2013 15:48:42 GMT

    [ https://issues.apache.org/jira/browse/MATH-1004?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=13793380#comment-13793380
] 

Thomas Neidhart commented on MATH-1004:
---------------------------------------

Ok, so then let's add a DiagonalMatrix.inverse() method.

But I would also suggest to add a method with an epsilon to check for a singular matrix:

 * DiagonalMatrix inverse() -> uses default epsilon, e.g. 1e-12
 * DiagonalMatrix inverse(double epsilon)
 * boolean isSingular()

> Inversion of diagonal matrix
> ----------------------------
>
>                 Key: MATH-1004
>                 URL: https://issues.apache.org/jira/browse/MATH-1004
>             Project: Commons Math
>          Issue Type: New Feature
>            Reporter: Ajo Fod
>            Priority: Minor
>         Attachments: MATH-1004.patch
>
>
> This should be a very easy feature to add and has many applications. 



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