From: "Loris Bennett" <loris.bennett@fu-berlin.de>
To: emacs-orgmode@gnu.org
Subject: Re: Variable in file name for babel output?
Date: Fri, 28 Jun 2013 08:21:39 +0200 [thread overview]
Message-ID: <87a9ma7o24.fsf@hornfels.zedat.fu-berlin.de> (raw)
In-Reply-To: 8761wzi245.fsf@med.uni-goettingen.de
Hi Andreas,
Andreas Leha <andreas.leha@med.uni-goettingen.de> writes:
> Hi Loris,
>
> "Loris Bennett" <loris.bennett@fu-berlin.de> writes:
>
>> Hi,
>>
>> Is it possible to pass a variable to a source block such that the
>> variable can be used as part of the name of the output file?
>>
>> Currently I have
>>
>> #+HEADER: :var data=timelimit-elapsed-data year=2011 :colnames yes
>> #+HEADER: :session *r* :file (org-babel-temp-file "time-elapsed-" ".pdf")
>>
>> which gets me a different name for each value of 'year', but ideally I
>> would like the files to be called
>>
>> time-elapsed-2011.pdf
>> time-elapsed-2012.pdf
>> time-elapsed-2013.pdf
>>
>> etc.
>>
>> Can this be done?
>
>
> Maybe not what you are looking for, but you could handle the assembly of
> the filename within your code block.
>
> Something like:
>
> #+HEADER: :var year=2011 :session *r* :results file
> #+begin_src R
> filename <- paste0("time-elapsed-", year, ".pdf")
>
> pdf(filename)
> ## your code
> dev.off()
>
> filename
> #+end_src
>
> Regards,
> Andreas
Thanks, that is in fact exactly what I need. Looking at the
documentation again, I see that it says:
"Some languages including R, gnuplot, dot, and ditaa provide special
handling of the :file header argument automatically wrapping the code
block body in the boilerplate code required to save output to the
specified file. This is often useful for saving graphical output of a
code block to the specified file."
I just didn't understand this at first. Maybe the following sentence
should/could be added:
"... the specified file. This means that the argument of the :file
header can be omitted and the file name can be generated within the
source block."
Cheers,
Loris
--
This signature is currently under construction.
prev parent reply other threads:[~2013-06-28 6:21 UTC|newest]
Thread overview: 3+ messages / expand[flat|nested] mbox.gz Atom feed top
2013-06-27 12:55 Variable in file name for babel output? Loris Bennett
2013-06-27 23:07 ` Andreas Leha
2013-06-28 6:21 ` Loris Bennett [this message]
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