[matplotlib-devel] Fwd: [Matplotlib-users] No plots show after update

[T J <tj...@gm...>]

On Thu, Jun 12, 2008 at 2:47 PM, John Hunter <jd...@gm...> wrote:
> On Thu, Jun 12, 2008 at 4:19 PM, T J <tj...@gm...> wrote:
>> I just updated my version of matplotlib to r5496, and now when I type
>> show(), nothing happens.  What could have gone wrong? Sorry if this is
>> simple.  I've attached a log of the installation.
>
> Try
>
>  > rm -rf build
>  > rm -rf /path/to/site-packages/matplotlib*
>  > svn up
>  > python setup.py install > build.out
>  > python examples/pylab_examples/simple_plot.py --verbose-debug > run.out
>
> and post build.out and run.out.
>
> Also, please post svn problems to the matplotlib-devel list
>
> http://lists.sourceforge.net/mailman/listinfo/matplotlib-devel
>

Thanks.  This has helped me isolate the problem to be some interplay
between the Agg backend and usetex being true.

With usetex turned on,
  $ python examples/pylab_examples/simple_plot.py --verbose-debug > run_agg.out
fails to produce a plot.  When usetex is turned off, the plot is produced.

With usetex turned on,
  $ python examples/pylab_examples/simple_plot.py -dWXAgg
--verbose-debug > run_wxagg.out
correctly produces a plot.  When usetex is turned off, the plot is
also produced.

Before updating, I never explicitly declared a backend (so I assume it
was using Agg), and I was always able to plot with usetex turned on.
I've attached my build.out and run.out (for both of the above cases
with usetex turned out).  How can I further troubleshoot this?  I have
a workaround now, but I'd like to understand what the problem is.