[Octave-bug-tracker] [bug #32502] cov function returns incorrect results for complex matrices

[Ivan]

URL:
  <http://savannah.gnu.org/bugs/?32502>

                 Summary: cov function returns incorrect results for complex
matrices
                 Project: GNU Octave
            Submitted by: lisp_hacker
            Submitted on: Wed 16 Feb 2011 09:51:18 AM GMT
                Category: Libraries
                Severity: 3 - Normal
                Priority: 5 - Normal
              Item Group: Incorrect Result
                  Status: None
             Assigned to: None
         Originator Name: 
        Originator Email: 
             Open/Closed: Open
         Discussion Lock: Any
                 Release: 3.2.4
        Operating System: GNU/Linux

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Details:

For some reason function cov conjugates it's result:
Here is the code from octave 'm/statistics/base/cov.m':

   x = center (x, 1);
   c = conj (x' * x / (n - 1));


Matlab (and other toolkits) do not conjugate it's results
(Matlab code):

   xy = (xc' * xc) / (m-1);






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