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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