From mboxrd@z Thu Jan  1 00:00:00 1970
From: Eric Schulte <schulte.eric@gmail.com>
Subject: Re: are babel python sessions and inlined images incompatible?
Date: Tue, 23 Apr 2013 07:29:50 -0600
Message-ID: <8738uhmget.fsf@gmail.com>
References: <ybi7gjtkhtr.wl%ramestica@lavabit.com>
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To: Rodrigo Amestica <ramestica@lavabit.com>
Cc: emacs-orgmode@gnu.org

Rodrigo Amestica <ramestica@lavabit.com> writes:

> Hello,
>
> if I use this block
>
> #+BEGIN_SRC python :results file
> from pylab import *
> plot(rand(10))
> savefig('images/test.png')
> return 'images/test.png'
> #+END_SRC 
>
> then the RESULTS block shows me an inlined version of the plot.
>
> If now I switch to this block
>
> #+BEGIN_SRC python :session test :results file
> from pylab import *
> plot(rand(10))
> savefig('images/test.png')
> return 'images/test.png'
> #+END_SRC 
>

You don't need to explicitly specify a return when working with a
session.  Either of the following should work.

    #+BEGIN_SRC python :session test :file "images/test.png"
      from pylab import *
      plot(rand(10))
      savefig('images/test.png')
    #+END_SRC

or

    #+BEGIN_SRC python :session test :results file
      from pylab import *
      plot(rand(10))
      savefig('images/test.png')
      'images/test.png'
    #+END_SRC

Hope this helps,

>
> then the RESULTS block does not show the inlined plot but this
>
> | <matplotlib.lines.Line2D | object | at | 0x35c0650> |
>
> Using a session is kind of mandatory for me because I need several blocks to
> share variables.
>
> Is there something evidently wrong with my approach?
>
> thanks,
>  Rodrigo
>
>

-- 
Eric Schulte
http://cs.unm.edu/~eschulte