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Re: [O] Manual does not list :results output graphics as babel header ar

From: John Hendy
Subject: Re: [O] Manual does not list :results output graphics as babel header arg
Date: Tue, 10 Jul 2012 11:03:43 -0500

On Tue, Jul 10, 2012 at 10:19 AM, Thomas S. Dye <address@hidden> wrote:
> John Hendy <address@hidden> writes:
>> On Mon, Jul 9, 2012 at 7:35 PM, Thomas S. Dye <address@hidden> wrote:
>>> John Hendy <address@hidden> writes:
>>>> I have typically outputted graphics from R via tikzDevice manually,
>>>> but gave my first whirl to just including things via the :file
>>>> argument in my block header. In the process, I was trying to get this
>>>> to work and found I needed to use:
>>>> -----
>>>> :results output graphics
>>>> -----
>>>> This is listed on Worg ob-R-doc:
>>>> - http://orgmode.org/worg/org-contrib/babel/languages/ob-doc-R.html#sec-4-3
>>>> But I didn't originally know about it, as it's not a listed header
>>>> argument in the manual, which is where I check since they're all
>>>> listed in one place:
>>>> - http://orgmode.org/manual/results.html#results
>>>> Does the manual only list universal babel header arguments and R is in
>>>> a subset of ones using =:results output graphics= or should it be
>>>> there?
>>> Hi John,
>>> The babel header arguments are implemented at two levels.
>>> There are general babel arguments that apply to all the supported
>>> languages.  These are described in the manual.
>>> It is also possible for the individual language implementations to
>>> define their own header arguments.  R is a good example, where the very
>>> many arguments to the various R output devices are built into ob-R.el.
>>> These language specific header arguments are not described in the
>>> manual, but instead appear in the language specific documentation on
>>> Worg.
>>> Re: your specific question about :results output graphics.  I believe
>>> this is an R specific header argument and that it is described in the
>>> appropriate place in the documentation on Worg (see lines 68 and 230
>>> of ob-R.el).
>>> The manual is not a one-stop source for answers to all Babel questions.
>>> Recourse to the language specific documentation is typically necessary,
>>> which is why it would be great if someone could find time to work up
>>> documentation for the 20 or so languages that still lack it :)
>> Thanks for the clarification and that answers the question. This was a
>> specific header argument for R. Perhaps the manual could link to this
>> page?
>> - http://orgmode.org/worg/org-contrib/babel/languages.html
>> Maybe with a diddy: "Some languages feature their own unique header
>> arguments. The above document only universal, system wide Babel header
>> arguments and one should consult the specific language page on Worg
>> for additional features."
>> Just a thought.
> Hi John,
> Thanks for this thought, which is indeed reasonable.  I thought the
> manual might lack this structure, but when I went back to the
> manual I found that
> http://orgmode.org/manual/Specific-header-arguments.html#Specific-header-arguments
> has this at the bottom of the page: "Additional header arguments are
> defined on a language-specific basis, see Languages", where "Languages"
> is a link to another manual page, one with a table of supported
> languages and a link to the Worg page you cite.

Wow. You see only what you look for. :embarrassed:

> The language is a bit different than your proposal, but the path seems
> clear enough to me.

Technically the path points to
http://orgmode.org/worg/org-contrib/babel/languages/; I'd point it to
http://orgmode.org/worg/org-contrib/babel/languages.html as it looks
cleaner vs. just looking at the directory of .html files. Either
way... the manual totally does it's job and I missed it!

Thanks for bearing with me!

> Of course, there is still the issue of the languages that lack
> language-specific documentation :)
> All the best,
> Tom
> --
> T.S. Dye & Colleagues, Archaeologists
> 735 Bishop St, Suite 315, Honolulu, HI 96813
> Tel: 808-529-0866, Fax: 808-529-0884
> http://www.tsdye.com

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