[Octave-bug-tracker] [bug #51829] Consecutive plots gradually drifts out of figure area

[Tunc]

URL:
  <http://savannah.gnu.org/bugs/?51829>

                 Summary: Consecutive plots gradually drifts out of figure
area
                 Project: GNU Octave
            Submitted by: tunc
            Submitted on: Wed 23 Aug 2017 04:51:57 PM UTC
                Category: Plotting
                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: 4.0.0
        Operating System: GNU/Linux

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Details:

If multiple plots are made without explicitly closing the figure window, the
following plots tend to gradually drift downwards (towards -y axis). It is as
if the calculation of corner coordinates are done without using the updated
value of the font size variable.

Attached png files show what happens as the below loop iterates. Basically,
1) The plot moves downwards, truncating first the labels and then the plot
itself.
2) The legend also is improperly plotted after iteration 10. As a 
3) If the system is not forced to pause between figures, some figures are
rendered before actually being plotted, resulting in white files.


set(0,'DefaultAxesFontSize', 20);
data = rand(50,50);

for i = 1:1:20
        imagesc(data);
        xlabel('x-label');
        ylabel('y-label');
        colorbar;
        print(sprintf('%d.png',i));
        pause(0.05);
end




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File Attachments:


-------------------------------------------------------
Date: Wed 23 Aug 2017 04:51:57 PM UTC  Name: 1.png  Size: 36KiB   By: tunc

<http://savannah.gnu.org/bugs/download.php?file_id=41622>
-------------------------------------------------------
Date: Wed 23 Aug 2017 04:51:57 PM UTC  Name: 5.png  Size: 35KiB   By: tunc

<http://savannah.gnu.org/bugs/download.php?file_id=41623>
-------------------------------------------------------
Date: Wed 23 Aug 2017 04:51:57 PM UTC  Name: 10.png  Size: 30KiB   By: tunc

<http://savannah.gnu.org/bugs/download.php?file_id=41624>
-------------------------------------------------------
Date: Wed 23 Aug 2017 04:51:57 PM UTC  Name: 20.png  Size: 28KiB   By: tunc

<http://savannah.gnu.org/bugs/download.php?file_id=41625>

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