No, I'm not adding or removing axes while interacting. (A single axes
instance gets created when the figure is instantiated and remains the life
of the figure.)
Thans for the suggestion of replacing Axes.end_pan. Unfortunately I've left
on a trip since my initial post so it will be a while before I can try it.
On Dec 20, 2010 8:20 AM, "Michael Droettboom" <md...@stsci.edu> wrote:
> This is a wild guess -- sounds like a race condition where the mouse up
> event is somehow getting fired before the mouse down event.
>
> In your more complex example, are you adding/removing axes while
> interacting with the plots?
>
> You could try "papering over" this problem by replacing Axes.end_pan
> with the following (I'm not entirely sure this is a good idea, but I'm
> curious if it prevents the sluggishness):
>
> def end_pan(self):
> """
> Called when a pan operation completes (when the mouse button
> is up.)
>
> .. note::
> Intended to be overridden by new projection types.
> """
> if hasattr(self, '_pan_start'):
> del self._pan_start
>
> Mike
>
> On 12/18/2010 01:52 PM, John Haiducek wrote:
>> I have an application with two matplotlib figures, both using the gtkAgg
>> backend. One or the other is displayed on the screen depending on the
>> GUI state. Initially after creating the two figures, I can interact with
>> both of them just fine, but after switching between figures two or three
>> times the figure becomes sluggish in handling pans and zooms, and I
>> start getting errors like this while panning:
>>
>> Traceback (most recent call last):
>> File
>> "/usr/lib/pymodules/python2.6/matplotlib/backends/backend_gtk.py", line
>> 216, in button_release_event
>> FigureCanvasBase.button_release_event(self, x, y, event.button,
>> guiEvent=event)
>> File "/usr/lib/pymodules/python2.6/matplotlib/backend_bases.py", line
>> 1219, in button_release_event
>> self.callbacks.process(s, event)
>> File "/usr/lib/pymodules/python2.6/matplotlib/cbook.py", line 165, in
>> process
>> func(*args, **kwargs)
>> File "/usr/lib/pymodules/python2.6/matplotlib/backend_bases.py", line
>> 2016, in release_pan
>> a.end_pan()
>> File "/usr/lib/pymodules/python2.6/matplotlib/axes.py", line 2458, in
>> end_pan
>> del self._pan_start
>> AttributeError: _pan_start
>>
>> I tried to create a minimum working example but so far have been
>> unsuccessful; the problem did not recur in the simpler program I created.
>>
>> Can anyone suggest to me where I would look to find what could cause
>> this error and the (presumably related) performance degradation?
>>
>>
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>
>
> --
> Michael Droettboom
> Science Software Branch
> Space Telescope Science Institute
> Baltimore, Maryland, USA
>
>
>
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