[Matplotlib-users] Problems with Matplotlib examples under Windows

[Paul Hobson]

On Wed, Jan 6, 2016 at 11:24 AM, Chris Corben <cjcorben at hoarybat.com> wrote:

> Hi everyone - I am a complete newbie to Matplotlib but love the idea and
> want to get to know it.
>
> I am having problems with three of the matplotlib examples running Jupyter
> Notebook under Windows. The same problem occurs consistently on three
> different PCs, two running Win 7 Professional and one running Win 8.1.
> Matplotlib was obtained by installing 64 bit Anaconda3. I am also using
> PyCharm 5.0.3 and seeing the same issues. I have done nothing to modify any
> part of the Anaconda installation.
> Matplotlib is version 1.5.0
>
> I have also used the same setup under Linux Mint 17.2, where both in
> Jupyter and PyCharm everything worked.
>
> The three examples I have tried which failed are:
> embedding_in_tk.py
> embedding_in_tk2.py
> and
> embedding_in_tk_canvas.py
>
> The results of all these failures are crashes of Python showing the
> Windows error "Python has stopped working". In PyCharm I stepped through
> the code to find where it crashed.
> In:
> embedding_in_tk.py
> and
> embedding_in_tk2.py
> the crash occurred in the line
> canvas.show()
>   calling
>   FigureCanvasTkAgg.draw() in backend_tkagg.py
>     calling
>     tkagg.blit() in tkagg.py
>     and crashed in the second attempt at
>       tk.call()
>
> In:
> embedding_in_tk_canvas.py  (modified only to import tkinter.py for Python
> 3)
> the crash occurred in the line
>   fig_photo = draw_figure(canvas, fig, loc=(fig_x, fig_y))
>     calling
>     draw_figure()
>       failing in the line
>       tkagg.blit()
>         which calls
>         get_renderer() in backend_agg.py
>           which crashes at the end of the function in the line
>           return self.renderer
>
> I ensured at all times that Python 3.5 in Anaconda was used as the
> interpreter.
>
> I presume this is due to some difference in the OS's and would love to
> hear what I can do about it!


At first glance, it seems like your windows machine doesn't have the TkAgg
backend. If everything else ran, I wouldn't working about this.

-paul
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