[Octave-bug-tracker] [bug #49980] plotyy fails after previous plot

[Pantxo Diribarne]

Follow-up Comment #13, bug #49980 (project octave):

Now I see there is a much simpler alternative than the one I described in
comment #12. The way we generally use newplot is as follows (excerpt from
plot.m):


[hax, varargin, nargs] = __plt_get_axis_arg__ ("plot", varargin{:});

  if (nargs < 1)
    print_usage ();
  endif

  oldfig = [];
  if (! isempty (hax))
    oldfig = get (0, "currentfigure");
  endif
  unwind_protect
    hax = newplot (hax);


Which means we expect newplot to create the new axes/figure itself if it
doesn't already exist. The simple approach is thus if newplot created the
axes, then it knows it hasn't got to reset it. I attached a modified patch
that implements this approach.

Now there is still the case


close all
axes ()
plot (1:10)


In this case newplot will still reset already clean figure/axes but I think we
can live with it. Thoughts?

(file #39389)
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Additional Item Attachment:

File name: rm_listeners4.patch            Size:4 KB


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