bugGNU Octave - Bugs: bug #54248, error report on non-square...

 
 

bug #54248: error report on non-square matrices to the power is wrong

Submitter:  None
Submitted:  Thu 05 Jul 2018 06:17:16 AM UTC
   
 
Category:  Documentation Severity:  2 - Minor
Priority:  3 - Low Item Group:  Documentation
Status:  Fixed Assigned to:  siko1056
Originator Name:  Sadi Originator Email:  -email is unavailable-
Open/Closed:  * Closed Release:  * 4.4.0
Operating System:  * Any Fixed Release:  None
Planned Release:  None
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Thu 05 Jul 2018 09:35:12 AM UTC, comment #2: 

The following change is hopefully much clearer for all permitted power cases:

https://hg.savannah.gnu.org/hgweb/octave/rev/986ba7f21a85


>> 2^rand(2,3)
error: for x^y, only square matrix arguments are permitted and one argument must be scalar.  Use .^ for elementwise power.


Kai Torben Ohlhus <siko1056>
Group Member
Thu 05 Jul 2018 07:56:00 AM UTC, comment #1: 

Confirmed, a small example to reproduce the error message in [1] which might be missleading, even if the matrix was labelled `x`:


A = rand (4,2);
A^2
error: for x^A, A must be a square matrix.  Use .^ for elementwise power.


[1] https://hg.savannah.gnu.org/hgweb/octave/file/5f9fa229cc8a/libinterp/corefcn/xpow.cc#l67

Kai Torben Ohlhus <siko1056>
Group Member
Thu 05 Jul 2018 06:17:16 AM UTC, original submission:  

# "error: for x^A, A must be a square matrix.  Use .^ for  elementwise power."

# This shoulde be: x must be a square matrix

Anonymous

 

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    Follow 8 latest changes.

    Date Changed by Updated Field Previous Value => Replaced by
    2018-07-05 siko1056 StatusIn Progress Fixed
        Open/ClosedOpen Closed
    2018-07-05 siko1056 CategoryNone Documentation
        Severity3 - Normal 2 - Minor
        Priority5 - Normal 3 - Low
        Item GroupOther Documentation
        StatusNone In Progress
        Assigned toNone siko1056

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