[yt-users] How do I preview a plot?

[(Jan) Christoph Bischko]

Nathan,

thanks for the lightning-fast reply!

On 06.03.2017 17:15, Nathan Goldbaum wrote:
> Currently that's not supported outside of a Jupyter notebook.
> 
> That said, in the next major release of yt (yt 3.4) we will add support
> for this. If you'd like to try it out right now you'll need to install
> yt from the "yt" branch of the mercurial repository. There are
> instructions on how to build yt from source here:
> 
> http://yt-project.org/docs/dev/installing.html#installing-yt-using-pip-or-from-source
> 
> Here's some description in the docs for the in-development version of yt
> where this feature is available already:
> 
> http://yt-project.org/docs/dev/visualizing/plots.html#viewing-plots
> 
> Basically you just do:
> 
> import yt
> yt.toggle_interactivity()

Thank you Nathan, that is convenient and amazing.

I just found http://yt-project.org/doc/visualizing/manual_plotting.html,
which I will use as a workaround for the time being as I also need some
(limited) backward-compatibility.



> And the next time you call plot.show() it should pop up a GUI plot
> window using your default matplotlib backend. Unfortunately we can't
> make this behavior the default since yt is often used in headless ssh
> sessions on a supercomputer where using an interactive GUI backend would
> cause a crash.

Unless you couple it with something like:

    import os
    if 'DISPLAY' not in os.environ: matplotlib.use('agg')

Which, I admit, could be improved upon. However, there should be less
crude hacks to detect the headless case.

Regards,
Christoph

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