Re: [Matplotlib-users] Matplotlib hangs due to numpy.ma.power()

[Thomas C. <tca...@gm...>]

Can you provide a reproducible example?  There is not really enough here to
sort out what is going wrong or why it is going wrong.  Ideally the example
should be self contained (code + synthetic data).

What versions of mpl + numpy + python are you using everywhere?

Tom

On Fri Nov 14 2014 at 7:25:15 AM Torsten Bronger <
br...@ph...> wrote:

> Hallöchen!
>
> I've had a very odd observation today: I call matplotlib 1.3.1 from
> Django 1.7 code running on Apache under Ubuntu 14.04.  The relevant
> code is:
>
>     figure = Figure(frameon=False, figsize=(4, 3))
>     canvas = FigureCanvasAgg(figure)
>     axes = figure.add_subplot(111)
>     ...
>     canvas.print_figure(plot_filepath)
>
> The last command hangs.
>
> Funny enough, if I run the very same code on Django's testserver, it
> works.
>
> First, I thought of http://stackoverflow.com/questions/22337250 but
> this is not the case here.  I've really assured that "Agg" is used,
> also by providing a proper config file.
>
> The oddest part is, if I replace in matplotlib/scale.py, line 136,
>
>         return ma.power(10.0, a) / 10.0
>
> with
>
>         return np.power(10.0, a) / 10.0
>
> it works!
>
> Can anybody explain this?
>
> Regards,
> Torsten.
>
> --
> Torsten Bronger    Jabber ID: tor...@ja...
>                                   or http://bronger-jmp.appspot.com
>
>
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