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Posted to issues@commons.apache.org by "Mark Williamson (JIRA)" <ji...@apache.org> on 2018/04/06 14:58:00 UTC

[jira] [Created] (MATH-1456) Sorted EigenSystem for EigenDecomposition for non-symmetric matrices

Mark Williamson created MATH-1456:
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             Summary: Sorted EigenSystem for EigenDecomposition for non-symmetric matrices
                 Key: MATH-1456
                 URL: https://issues.apache.org/jira/browse/MATH-1456
             Project: Commons Math
          Issue Type: Improvement
    Affects Versions: 3.6.1
            Reporter: Mark Williamson


Would it be possible to have the eigenvalues and associated eigenvectors, sorted by magnitude of the eigenvalues for non-symmetric matrices?

It seems an ordering is done for symmetric matrices in findEigenVectors()

[https://github.com/apache/commons-math/blob/master/src/main/java/org/apache/commons/math4/linear/EigenDecomposition.java#L669]

However, this is not done in findEigenVectorsFromSchur()

 



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