[Octave-bug-tracker] [bug #53356] svd: allow 2 return arguments

[Ceral Paquet]

URL:
  <http://savannah.gnu.org/bugs/?53356>

                 Summary: svd: allow 2 return arguments
                 Project: GNU Octave
            Submitted by: octavebugs
            Submitted on: Fri 16 Mar 2018 06:36:28 AM UTC
                Category: None
                Severity: 3 - Normal
                Priority: 5 - Normal
              Item Group: None
                  Status: None
             Assigned to: None
         Originator Name: 
        Originator Email: 
             Open/Closed: Open
         Discussion Lock: Any
                 Release: 4.2.1
        Operating System: Any

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Details:

In MATLAB, you can request 1, 2 or 3 return arguments from svd function.
Currently Octave throws an error which is inconvenient.

++
>> A=rand(4,3);
>> S=svd(A);
>> [U S V]=svd(A);
>> [U S]=svd(A);
error: Invalid call to svd.  Correct usage is:

 -- S = svd (A)
 -- [U, S, V] = svd (A)
 -- [U, S, V] = svd (A, ECON)
--

It would be better if Octave could quietly discard the 3rd return argument.




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