Re: [Matplotlib-users] Matplotlib 1.4.3 Agg problem

[Benjamin R. <ben...@ou...>]

If your backend is set to Agg, then no interactive window will appear upon
call to show(). Agg is intended for headless servers. What might be
happening is that somewhere, you have Agg set as the default backend.

Ben Root

On Wed, Jul 15, 2015 at 10:16 AM, John Coppens <jo...@jc...> wrote:

> Hello all.
>
> I had MatPlotLib 1.3.1 installed, and decided to upgrade to 1.4.3. I
> compiled the
> .tar.gz package, which went without a hitch (except for a number of
> warnings
> from gcc). Installation also completed without problems.
>
> But, on running the same simple plot I was working on, no plot was output:
>
> import matplotlib.pyplot as plt
>
> def test_plot():
>     x = range(11)
>     y = [x0**2 for x0 in x]
>
>     plt.plot(x, y, 'o:', fillstyle='none', label = "1", ms = 10)
>     plt.legend()
>     plt.show()
>
> def main(args):
>     test_plot()
>     return 0
>
> if __name__ == '__main__':
>     import sys
>     sys.exit(main(sys.argv))
>
> which was somewhat annoying, as I was trying to help out someone on
> Stackoverflow. Only after experimenting somewhat, I found that
> setting the Agg to GtkAgg, the plot started working again:
>
> import matplotlib
> matplotlib.use('GtkAgg')
>
> Is this normal? I'm not actually using gtk in this project.
> TkAgg also works.
>
> John
>
>
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