bugGNU Octave - Bugs: bug #67245, Octave Wayland/QT Plot Grid Not...

 
 

bug #67245: Octave Wayland/QT Plot Grid Not Displaying

Submitter:  Richard Shadbolt <shadders>
Submitted:  Wed 25 Jun 2025 09:56:52 PM UTC
   
 
Category:  Plotting Severity:  3 - Normal
Priority:  5 - Normal Item Group:  Incorrect Result
Status:  None Assigned to:  None
Originator Name:  Shadders Open/Closed:  * Open
Release:  * 9.4.0 Release: 
Operating System:  * GNU/Linux Fixed Release:  None
Planned Release:  None
* Mandatory Fields

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Thu 26 Jun 2025 02:17:51 PM UTC, comment #3: 

Hi Dmitri,
Thanks for the replies. I will await the Fedora repositories to update, as the grid is not a problem. My preference is to keep my machine synchronised with the Fedora servers.
Thanks and Regards,
Shadders.

Richard Shadbolt <shadders>
Thu 26 Jun 2025 01:45:37 PM UTC, comment #2: 

In the meantime, I patched Fedora's rpms. If you feel brave you can try them out (again note, those are NOT official Fedora/RedHat rpms, but my personal):

octave:
https://drive.google.com/file/d/12xE2Y37yzm8j7rAZCGXAX_uMvpGqvksT/view?usp=drive_link

octave-devel (you would need this if you want to install octave packages):

https://drive.google.com/file/d/12OQ6HeFNJ-rSlxcu4BE1fEHXQwNeP5WU/view?usp=drive_link

Sincerely,
Dmitri.
--

Dmitri A. Sergatskov <dasergatskov>
Wed 25 Jun 2025 10:48:22 PM UTC, comment #1: 

It has been fixed on development version
https://octave.discourse.group/t/opengl-alpha-blending/6588

I hope they would port it to stable bug fix (10.3).

Dmitri.
--

Dmitri A. Sergatskov <dasergatskov>
Wed 25 Jun 2025 09:56:52 PM UTC, original submission:  

Run the following code :

% Plot of SQRT(2x)
x = [0:0.1:20];
y = sqrt(2*x);
plot(x,y);
grid on;
xlabel('X-values');
ylabel('Y-values');
title('Graph of y=SQRT(2x)');

The "grid on" function for a QT plot does not show the grid. The toggle function in the plot window does not function. Using graphics_toolkit "fltk", or "gnuplot" shows the grid as expected.

Machine software details :

Operating System: Fedora Linux 42
KDE Plasma Version: 6.4.0
KDE Frameworks Version: 6.15.0
Qt Version: 6.9.1
Kernel Version: 6.15.3-200.fc42.x86_64 (64-bit)
Graphics Platform: Wayland

Richard Shadbolt <shadders>

 

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