Re: [Matplotlib-users] How to determine position of axes after imshow?

[Mark B. <ma...@gm...>]

I am glad to see you can reproduce the error, Stan.
I am running whatever is default with a PythonXY installation (sorry my
windows machine is at work).
Strange behavior.
The code works fine on my mac (PyQt4 backend) with all options
(show,draw,pause).
Should we file a bug report?
Mark

On Thu, Aug 9, 2012 at 4:02 PM, Stan West <sta...@nr...> wrote:

> **
>
> *From:* Mark Bakker [mailto:ma...@gm...]
> *Sent:* Tuesday, August 07, 2012 06:42
>
> I tried a few things and found out that doing a pause works.
> So why does a pause work, but a draw() or show() does not?
> This all on Windows using the standard PythonXY installation.
> Here is the code that works (testimage.py):
>
> from pylab import *
> c = ones((10,20))
> ax = imshow(c)
> pause(0.01)
> print ax.get_axes().get_position()
>
> Running from IPython:
> run testimage
> Bbox(array([[ 0.125     ,  0.24166667],
>        [ 0.9       ,  0.75833333]]))
>
> I modified your script to test show(), draw(), and pause(); it's attached.
> For the WXAgg matplotlib backend, I get:
>
> In [1]: print(matplotlib.get_backend())
> WXAgg
>
> In [2]: %run testimage
> show:  Bbox(array([[ 0.125,  0.1  ],
>        [ 0.9  ,  0.9  ]]))
> draw:  Bbox(array([[ 0.125     ,  0.24166667],
>        [ 0.9       ,  0.75833333]]))
> pause:  Bbox(array([[ 0.125     ,  0.24166667],
>        [ 0.9       ,  0.75833333]]))
>
> but for the Qt4Agg backend, I get:
>
> In [1]: print(matplotlib.get_backend())
> Qt4Agg
>
> In [2]: %run testimage
> show:  Bbox(array([[ 0.125,  0.1  ],
>        [ 0.9  ,  0.9  ]]))
> draw:  Bbox(array([[ 0.125,  0.1  ],
>        [ 0.9  ,  0.9  ]]))
> pause:  Bbox(array([[ 0.125     ,  0.24166667],
>        [ 0.9       ,  0.75833333]]))
>
> Which backend have you been using?
>