RE: Subplot problem in Octave 4.4.0?

[Pantxo]

Tony Richardson wrote
> I've tried a few other scripts in which the control panel is in different
> locations.  It doesn't
> appear to be due to interaction between a subplot and the control panel.
> I've found that if I comment out any code that draws to subplot(3, 3, 3)
> then the other
> subplots remain visible.  If I redraw subplot(3,3,3) the other subplots
> will eventually
> disappear.
> 
> Tony
> 
>> -----Original Message-----
>> From: Help-octave [mailto:help-octave-
>> bounces+richardson=

> evansville.edu@

> ] On Behalf Of Richardson,
>> Anthony
>> Sent: Friday, May 4, 2018 1:18 PM
>> To: Mike Miller <

> mtmiller@

> >
>> Cc: 

> help-octave@

>> Subject: RE: Subplot problem in Octave 4.4.0?
>> 
>> Yes, I see the same behavior.  That subplot is the only one above the
>> "control
>> panel", so maybe there is some strange interaction between the two (the
>> control panel and the subplot).  I've got a few other scripts that are
>> behaving
>> the same way under 4.4.0, I'll see if something similar is going on with
>> them.
>> 
>> Tony
>> 
>> > -----Original Message-----
>> > From: Mike Miller [mailto:

> mtmiller@

> ]
>> > Sent: Friday, May 4, 2018 11:56 AM
>> > To: Richardson, Anthony <

> ar63@

> >
>> > Cc: 

> help-octave@

>> > Subject: Re: Subplot problem in Octave 4.4.0?
>> >
>> > On Fri, May 04, 2018 at 15:01:12 +0000, Richardson, Anthony wrote:
>> > > I just tested Octave 4.4.0 under Linux (Ubuntu/flatpak) and the same
>> > > bug is present - subplots disappear after adjusting the sliders (not
>> > > necessarily after the first adjustment, but it doesn't take long).
>> > > Did you test under 4.4.0?  The maximize bug has been present for a
>> > > while,
>> > but the disappearing subplots (without window resizing) is new to
>> 4.4.0.
>> >
>> > If it helps narrow things down for you, I have found that it's the
>> 'hup'
>> > update that causes the subplots to disappear for me. For me the
>> > subplots disappear only when the third and fourth sliders are adjusted.
>> >
>> > If I comment out the lines that set the 'hup' state to true, so that
>> > subplot(3,3,3) is never redrawn, then no subplots disappear at all.
>> >
>> > Do you see the same?
>> >
>> > --
>> > mike

Indeed with those additional information I was able to reproduce the bug
which is clearly different than the one related to resize. Here the position
of the axes is corrupted :

octave:3> get (findobj (gcf, "type", "axes"), "position")
ans =
{
  [1,1] =

     7.5645e+12   3.2287e+22  -1.5054e+13  -6.4573e+22

  [2,1] =

     7.5645e+12   3.2287e+22  -1.5054e+13  -6.4573e+22
 ...

As a workaround, I found that avoiding the call to high level "plot"
function (by changing the properties of the original line object) avoids the
issue for me. Something like

...
    subplot(3,3,3)
    persitent h333 = [];
    tt = t(1:round(L/15))*1000;
    hh = h(1:round(L/15));
    if (isempty (h333))
      plot(tt, hh);
      grid on;
      %xlim([0 tplotmax]);
      xlabel('time (ms)');
      ylabel('Amplitude');
      title('Impulse Response');
    else
      set (h333, "xdata", tt, "ydata", hh);
    endif
...

Anyway, Tony, can you file a bug report about this new bug so that the
discussion can take place there? 

Pantxo



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