[Octave-bug-tracker] [bug #51229] ylim() fails to read correct limits:

[Dave Goel]

URL:
  <http://savannah.gnu.org/bugs/?51229>

                 Summary: ylim() fails to read correct limits:
                 Project: GNU Octave
            Submitted by: deego
            Submitted on: Mon 12 Jun 2017 09:48:45 PM UTC
                Category: Plotting with gnuplot
                Severity: 3 - Normal
                Priority: 5 - Normal
              Item Group: Incorrect Result
                  Status: None
             Assigned to: None
         Originator Name: Dave Goel
        Originator Email: 
             Open/Closed: Open
         Discussion Lock: Any
                 Release: 4.0.3
        Operating System: GNU/Linux

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Details:


octave:2> version
ans = 4.0.3 ## from debian backports on debian stable.


Create a file testmy.m with the  contents below, and run them. During the
sleep() phase, zoom in the figure. Our program tries to respect the user's
zoom preference for further plots, so it tries to read the new ylimits, but
fails.

Also note that we have to use gnuplot for this. With fltk, we can't even see
the plot during the sleep(). 

If you execute these steps one-by-one on commandline instead, the bug won't
show. 

----

testmy.m: 



graphics_toolkit("gnuplot"); ## using the default fltk, user can't even see
the plot during the sleep phase. 

x = y = [1 2];

plot(x,y);

disp("Sleeping 10s. Go ahead and move ylims around on the figure! I will not
be able to read them upon waking up from sleep()!");

sleep(10); 

drawnow(); ## Hoping this will help, but it doesn't.
refresh(); ## Hoping this will help, but it doesn't.

ylimnew = ylim()

## we obtain [1 2]






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