zooming problem on figures with shared axes · Issue #2790 · matplotlib/matplotlib · GitHub
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zooming problem on figures with shared axes #2790

Description

@jfmoulin

Hi!

I am trying to use axes shared across different figures and run into a funny effect when I resize one of the windows.
If I do:

import pylab as p
a0 = p.subplot(121) 
p.imshow(p.rand(100,100))
a1 = p.subplot(122,sharex=a0,sharey=a0)
p.imshow(p.rand(100,100)**2)
p.figure()
a2 = p.subplot(121,sharex=a0,sharey=a0)
p.imshow(p.rand(100,100)**3)

zooming into one of the axes does as expected: the other two follow.
However, when I resize one of the windows, all three axes zoom out completely (and not in one jump, it looks like seeing the image would be slowly falling away...)

Interestingly if I close the figures my shell still keeps on doing stuff backstage: my cpu is 100% busy. I tried this both under Ipython and a normal python shell.
Under Ipython a ctrl-C leads to the following traceback.

Original exception was:
Traceback (most recent call last):
  File "/usr/local/lib/python2.7/dist-packages/matplotlib-1.3.1-py2.7-linux-x86_64.egg/matplotlib/backends/backend_gtk.py", line 435, in expose_event
    self._render_figure(self._pixmap, w, h)
  File "/usr/local/lib/python2.7/dist-packages/matplotlib-1.3.1-py2.7-linux-x86_64.egg/matplotlib/backends/backend_gtkagg.py", line 84, in _render_figure
    FigureCanvasAgg.draw(self)
  File "/usr/local/lib/python2.7/dist-packages/matplotlib-1.3.1-py2.7-linux-x86_64.egg/matplotlib/backends/backend_agg.py", line 451, in draw
    self.figure.draw(self.renderer)
  File "/usr/local/lib/python2.7/dist-packages/matplotlib-1.3.1-py2.7-linux-x86_64.egg/matplotlib/artist.py", line 55, in draw_wrapper
    draw(artist, renderer, *args, **kwargs)
  File "/usr/local/lib/python2.7/dist-packages/matplotlib-1.3.1-py2.7-linux-x86_64.egg/matplotlib/figure.py", line 1034, in draw
    func(*args)
  File "/usr/local/lib/python2.7/dist-packages/matplotlib-1.3.1-py2.7-linux-x86_64.egg/matplotlib/artist.py", line 55, in draw_wrapper
    draw(artist, renderer, *args, **kwargs)
  File "/usr/local/lib/python2.7/dist-packages/matplotlib-1.3.1-py2.7-linux-x86_64.egg/matplotlib/axes.py", line 2086, in draw
    a.draw(renderer)
  File "/usr/local/lib/python2.7/dist-packages/matplotlib-1.3.1-py2.7-linux-x86_64.egg/matplotlib/artist.py", line 55, in draw_wrapper
    draw(artist, renderer, *args, **kwargs)
  File "/usr/local/lib/python2.7/dist-packages/matplotlib-1.3.1-py2.7-linux-x86_64.egg/matplotlib/axis.py", line 1093, in draw
    renderer)
  File "/usr/local/lib/python2.7/dist-packages/matplotlib-1.3.1-py2.7-linux-x86_64.egg/matplotlib/axis.py", line 1042, in _get_tick_bboxes
    extent = tick.label1.get_window_extent(renderer)
  File "/usr/local/lib/python2.7/dist-packages/matplotlib-1.3.1-py2.7-linux-x86_64.egg/matplotlib/text.py", line 757, in get_window_extent
    bbox = bbox.translated(x, y)

thanks in advance!
JF

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