I'm 64-bit Windows 7 with matplotlib 1.2.0 and WxPython 2.8.12.1. I
was fiddling around with some of the different backends to see what
they look like and I found that the WxAgg backend doesn't work:
Python 2.7.3 (default, Apr 10 2012, 23:24:47) [MSC v.1500 64 bit
(AMD64)] on win
32
Type "help", "copyright", "credits" or "license" for more information.
>>> import matplotlib as mpl
>>> mpl.use('WxAgg')
>>> from matplotlib import pyplot
>>> pyplot.ion()
>>> pyplot.plot([1, 2, 3])
[<matplotlib.lines.Line2D object at 0x0000000006757DA0>]
>>>
When I do the plot, the figure windows appears, but it's blank
(without even a proper blank background, just a white area) and
immediately shows "Not responding". I have to kill the window, and
doing so crashes the Python session. However, it works without the
"ion()" call: I can then call show() and see the plot fine.
I have wxPython working fine in other apps. In fact, what's
especially odd is that I actually have an app that directly uses
FigureCanvasWxAgg to embed matplotlib graphs in a GUI, and this seems
to work fine. So it seems the problem is somehow in matplotlib's own
management of the interactive figure window.
There was a previous question about a similar WxAgg issue on the list
(
http://matplotlib.1069221.n5.nabble.com/trouble-with-show-not-drawing-in-interactive-mode-w-WxAgg-td39110.html
), but there was no real answer: the poster just decided not to use
WxAgg. But aren't we really supposed to be able to use WxAgg
interactively?
Thanks,
--
Brendan Barnwell
"Do not follow where the path may lead. Go, instead, where there is
no path, and leave a trail."
--author unknown
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