[Octave-bug-tracker] [bug #58150] Slow loglog plot with non-default font

[Guillaume]

URL:
  <https://savannah.gnu.org/bugs/?58150>

                 Summary: Slow loglog plot with non-default font
                 Project: GNU Octave
            Submitted by: gyom
            Submitted on: Thu 09 Apr 2020 09:25:16 PM UTC
                Category: Plotting with OpenGL
                Severity: 3 - Normal
                Priority: 5 - Normal
              Item Group: Performance
                  Status: None
             Assigned to: None
         Originator Name: Guillaume
        Originator Email: 
             Open/Closed: Open
                 Release: dev
         Discussion Lock: Any
        Operating System: GNU/Linux

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Details:

Maybe it's an issue with the specific machine I am testing this on but I
noticed that a loglog plot becomes very slow when changing the default font:


>> figure ("DefaultAxesFontName", "*"); tic; loglog (rand (8)); toc
Elapsed time is 0.506582 seconds.
>> figure ("DefaultAxesFontName", "Helvetica"); tic; loglog (rand (8)); toc
Elapsed time is 14.1015 seconds.


It doesn't seem to make a difference whether the font is available or not on
the machine.




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