bugGNU Octave - Bugs: bug #44918, fminunc ignores display option

 
 

bug #44918: fminunc ignores display option

Submitter:  None
Submitted:  Fri 24 Apr 2015 02:08:11 PM UTC
   
 
Category:  Octave Function Severity:  1 - Wish
Priority:  5 - Normal Item Group:  Matlab Compatibility
Status:  Confirmed Assigned to:  None
Originator Name:  José Ferraro Originator Email:  -email is unavailable-
Open/Closed:  * Open Release:  * dev
Operating System:  * Microsoft Windows Fixed Release:  None
Planned Release:  None
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Fri 24 Apr 2015 04:10:44 PM UTC, comment #1: 

fminunc is just an m-file so it can be easily updated and extended.  The functions fminbnd and fminsearch already have support for Display so it shouldn't be hard if you want to attempt it.

Changing the bug group to "Matlab Compatibility" and Release to Dev since this is still present on the development branch.

Rik <rik5>
Group administrator
Fri 24 Apr 2015 02:08:11 PM UTC, original submission:  

fminunc  function does not display anything even if you set display'to 'iter', where one would hope to have for every iteration information about cost, gradient direction, step size, etc.
A very simple case where nothing is displayed

options = optimset('GradObj', 'off', 'MaxIter', 10,'Display',"iter");
 fminunc(@(t)((t-5)*(t-3)*(t-4)*(t-6)), 0, options)

The problem was present on cygwin Octave 3.8.2.

Anonymous

 

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    Follow 5 latest changes.

    Date Changed by Updated Field Previous Value => Replaced by
    2017-01-29 rik5 Summaryfminunc ignores display option fminunc ignores display option
    2015-04-24 rik5 StatusNone Confirmed
    2015-04-24 rik5 Severity3 - Normal 1 - Wish
        Item GroupIncorrect Result Matlab Compatibility
        Release3.8.2 dev

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