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From: "Sebastien Vauban" <sva-news-D0wtAvR13HarG/iDocfnWg@public.gmane.org>
To: emacs-orgmode-mXXj517/zsQ@public.gmane.org
Subject: Re: are babel python sessions and inlined images incompatible?
Date: Fri, 26 Apr 2013 15:21:36 +0200	[thread overview]
Message-ID: <86bo911l7j.fsf@somewhere.org> (raw)
In-Reply-To: <m138uefueg.fsf@poto.westell.com>

Hi Thomas,

Thomas S. Dye wrote:
> "Sebastien Vauban" writes:
>> Well, I *now* know it's not described in the Org manual...
>>
>>   ╭──── http://lists.gnu.org/archive/html/emacs-orgmode/2013-03/msg01181.html
>>   │
>>   │ - :results graphics makes the list even longer, yes?  :-) I'm not
>>   │   sure that every language supports it and I don't believe it's
>>   │   currently in the manual.
>>   ╰────
>>
>> Though, it's described in many different posts on this ML, and in some
>> tutorials on Worg...
>>
>>   ╭──── http://orgmode.org/worg/org-contrib/babel/languages/ob-doc-R.html
>>   │
>>   │ If a :file filename.ext header argument is provided to an R source block, then
>>   │ the output from the source block will go to the named file. What that output
>>   │ is depends on the value of the :results header argument.
>>   │
>>   │ If the value is :results graphics then "base" graphics output is captured on
>>   │ disk, and a link to the graphics file is inserted into the Org Mode buffer (as
>>   │ is also the case with the graphics-only languages such as gnuplot, ditaa, dot,
>>   │ and asymptote.)
>>   ╰────
>>
>> I thought it was a "core" option value for all general-purpose languages (e.g.
>> emacs-lisp, python, R, ruby, sh), required when your code block outputs a
>> graphics.
>>
>> After checking, I only found it in those files:
>>
>> ./ob-maxima.el:117:  (and (member "graphics" (cdr (assq :result-params params)))
>> ./ob-octave.el:272:  (and (member "graphics" (cdr (assq :result-params params)))
>> ./ob-R.el:234:  (and (member "graphics" (cdr (assq :result-params params)))
>
> The language documentation on Worg, such as
> http://orgmode.org/worg/org-contrib/babel/languages/ob-doc-R.html, is
> meant to be documentation, rather than tutorial.  It is structured this
> way so the manual doesn't need to be updated every time support for a
> new language is added, or changes are made to a language-specific file.
>
> The template for this documentation includes a slot for default header
> arguments and also one for language-specific header arguments, because
> these are often changed by the language-specific modules.
>
> I think the hope and expectation is that the user community take over
> the tasks of creating and tending the language-specific code.  If
> :results graphics makes good sense for Python, then users should feel
> free to add it to ob-python.el.  With the examples you point out, it
> shouldn't be too difficult.

As you say, I guess that one could copy/paste the code from maxima, octave or
R to get the desired results.

Would we want to abstract the above, I guess we should generalize the
languages families as:

- graphics-only languages (ditaa, dot, gnuplot, etc.)

- general-purpose languages with graphical capacities (R, maxima, octave...
  and, at least, python[1] IIUC)

- general-purpose languages without graphical capacities (sql, sh, etc.)

Maybe that would allow to have sets of header arguments (or default values)
mapped onto those families.

Best regards,
  Seb

[1] Never used it.

-- 
Sebastien Vauban

  reply	other threads:[~2013-04-26 13:21 UTC|newest]

Thread overview: 11+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2013-04-23  4:10 Rodrigo Amestica
2013-04-23 13:29 ` Eric Schulte
2013-04-23 22:17   ` Rodrigo Amestica
2013-04-24 21:06     ` Sebastien Vauban
2013-04-24 23:33       ` Rodrigo Amestica
2013-04-25  7:40         ` Sebastien Vauban
2013-04-25 16:27           ` Thomas S. Dye
2013-04-26 13:21             ` Sebastien Vauban [this message]
2013-04-26 22:13               ` Rasmus
2013-04-27  6:27               ` Achim Gratz
2013-04-27  6:40                 ` Sebastien Vauban

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