bugGNU Octave - Bugs: bug #53670, subplot handle changes after...

 
 

bug #53670: subplot handle changes after window resizing

Submitter:  None
Submitted:  Mon 16 Apr 2018 06:07:08 PM UTC
 
Category:  Octave Function Severity:  3 - Normal
Priority:  5 - Normal Item Group:  Incorrect Result
Status:  Confirmed Assigned to:  None
Originator Name:  Tony Richardson Originator Email:  -email is unavailable-
Open/Closed:  * Open Release:  * dev
Operating System:  * Any Fixed Release:  None
Planned Release:  None
* Mandatory Fields

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Wed 25 Aug 2021 11:50:54 PM UTC, comment #3: 

trying this on Octave 6.3.0:

 蘤₻>> h = subplot(2,4,4)
h = -6.9597
>> plot(1:10)
>> ##stretch window by dragging mouse
>> h2 = subplot(2,4,4)
h2 = -6.9597
>> close all;clear;
>> h = subplot(2,4,4)
h = -6.3472
>> plot(1:10)
>> ##maximize window using Maximize button
>> h2 = subplot(2,4,4)
h2 = -6.3472

maybe this was fixed between 6.1 and 6.3?

Nicholas Jankowski <nrjank>
Project Member
Wed 25 Aug 2021 11:17:36 PM UTC, comment #2: 

Using 6.1.0

>>  h = subplot (2,4,4)
h = -8.5034
>> plot (1:10);

Then maximise plot (using radio button)

>> h2 = subplot (2,4,4)

h2 = -8.5034


h=h2
However, the figure is still destroyed.
And the command of close all needs to be run

If instead use the pointer and drag to make it bigger the figure stays
and h=h2

Anonymous
Mon 16 Apr 2018 08:26:31 PM UTC, comment #1: 

Confirmed.  There isn't any time to fix this before the 4.4 release, but it has been a problem going pretty far back.

A more destructive way to see what is going on is

h = subplot (2,4,4)
plot (1:10);
## Resize window to be very large
h2 = subplot (2,4,4)

Not only will h != h2, but subplot has determined that there was no plot in the location so it deletes the axes object (destroying the plot (1:10)) and then creates an empty axes object.

Rik <rik5>
Project Administrator
Mon 16 Apr 2018 06:07:08 PM UTC, original submission:  

If I enter

h = subplot(2, 4, 4)

I get back a particular handle value.  If I resize the window and then enter the same command I get back a different value.  I am not sure if this is expected behavior, but it does seem to be incompatible with MATLAB (which returns equal objects).

I first encountered this is a related problem when I first did

h = subplot(2, 4, [1:3])

and then after window resizing tried to get a subplot for the same area using

subplot(h)

subsequent plots no longer covered the 1:3 area of the
(resized) window though.  This technique works in MATLAB.  I can work around the issue by using

subplot(2, 4, [1:3])

everytime I want to plot in that area.

Tony Richardson

Anonymous

 

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    Follow 4 latest changes.

    Date Changed by Updated Field Previous Value => Replaced by
    2018-04-16 rik5 Item GroupMatlab Compatibility Incorrect Result
        StatusNone Confirmed
        Release4.2.2 dev
        Operating SystemMicrosoft Windows Any

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