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

[Pantxo Diribarne]

Follow-up Comment #6, bug #49980 (project octave):

>> ... there is nothing in the language that requires a programmer to be that
forward thinking. 

Yes average users should not have to bother with this and I agree that having
"newplot" reset the listeners is the way to go.

In newplot.m I see this note:

      ## delete (allchild (ca));
      ## reset (ca);
      ###########################
      ## Actually, __go_axes_init__ does both less and more.
      ## It doesn't really remove all children since it re-instantiates
      ## xlabel, ylabel, zlabel, and title text objects.
      ## Also it preserves font properties like fontsize.
      ## For the time being, in order to have axis labels and title work,
      ## the above code is required.


I don't understand why we have to use __go_axes_init__ and why it has to
delete and recreate labels, does someone have any insight?

Why not something like:

cla reset


Currently "cla reset" will call axes::reset_default_properties which in turn
follows approximately the same route as __go_axes_init__ so the attached cset
would do the trick.


(file #39366)
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Additional Item Attachment:

File name: remove_listeners.patch         Size:2 KB


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