[Octave-bug-tracker] [bug #55418] Speed issue with uicontrols

[Guillaume]

URL:
  <https://savannah.gnu.org/bugs/?55418>

                 Summary: Speed issue with uicontrols
                 Project: GNU Octave
            Submitted by: gyom
            Submitted on: Tue 08 Jan 2019 11:41:51 AM UTC
                Category: Plotting with OpenGL
                Severity: 3 - Normal
                Priority: 5 - Normal
              Item Group: Regression
                  Status: None
             Assigned to: None
         Originator Name: Guillaume
        Originator Email: 
             Open/Closed: Open
         Discussion Lock: Any
                 Release: dev
        Operating System: GNU/Linux

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Details:

I notice a significant difference in speed between 4.4.1 and 5.0.1 when
displaying and deleting uicontrols. The following script runs nearly
instantaneously in Matlab and Octave 4.4.1 but is much slower with current
Octave dev.


h = figure ();
for i=0.02:0.08:0.94
    for j=0.02:0.08:0.94
        uicontrol (...
            "Parent", h, ...
            "Units", "normalized", ...
            "Position", [i j 0.06 0.06]);
    end
end
delete (findobj (h, "Type", "uicontrol"));





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