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Posted to issues@commons.apache.org by "Piotr Wydrych (JIRA)" <ji...@apache.org> on 2013/03/06 10:04:12 UTC

[jira] [Created] (MATH-939) stat.correlation.Covariance should allow one-column matrices

Piotr Wydrych created MATH-939:
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             Summary: stat.correlation.Covariance should allow one-column matrices
                 Key: MATH-939
                 URL: https://issues.apache.org/jira/browse/MATH-939
             Project: Commons Math
          Issue Type: Bug
            Reporter: Piotr Wydrych


Currently (rev 1453206), passing 1-by-M matrix to the Covariance constructor throws IllegalArgumentException. For consistency, the Covariance class should work for a single-column matrix (i.e., for a N-dimensional random variable with N=1) and it should return 1-by-1 covariance matrix with the variable's variance in its only element.

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