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* [babel] file header argument includes other variable
@ 2012-03-29 13:38 Rainer M Krug
  2012-03-30 19:23 ` Andreas Leha
  0 siblings, 1 reply; 2+ messages in thread
From: Rainer M Krug @ 2012-03-29 13:38 UTC (permalink / raw)
  To: emacs-orgmode

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Hi

I would like to do make the file header argument to be concatenated of a constant string and
another variable, so effectively:

#+header: :var+ ConNum="10"
#+header: :results graphics
#+header: :file SA_VALUEOFConNum.pdf
#+header: :width 8
#+header: :height 8
#+header: :pointsize 8
#+begin_src R
  plot(runif(100))
#+end_src

#+RESULTS:
[[file:SA_10.pdf]]

Is this possible?

Thanks,

Rainer


- -- 
Rainer M. Krug, PhD (Conservation Ecology, SUN), MSc (Conservation Biology, UCT), Dipl. Phys.
(Germany)

Centre of Excellence for Invasion Biology
Stellenbosch University
South Africa

Tel :       +33 - (0)9 53 10 27 44
Cell:       +33 - (0)6 85 62 59 98
Fax :       +33 - (0)9 58 10 27 44

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email:      Rainer@krugs.de

Skype:      RMkrug
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^ permalink raw reply	[flat|nested] 2+ messages in thread

* Re: [babel] file header argument includes other variable
  2012-03-29 13:38 [babel] file header argument includes other variable Rainer M Krug
@ 2012-03-30 19:23 ` Andreas Leha
  0 siblings, 0 replies; 2+ messages in thread
From: Andreas Leha @ 2012-03-30 19:23 UTC (permalink / raw)
  To: emacs-orgmode

Rainer M Krug <r.m.krug@gmail.com> writes:

> Hi
>
> I would like to do make the file header argument to be concatenated of a constant string and
> another variable, so effectively:
>
> #+header: :var+ ConNum="10"
> #+header: :results graphics
> #+header: :file SA_VALUEOFConNum.pdf
> #+header: :width 8
> #+header: :height 8
> #+header: :pointsize 8
> #+begin_src R
>   plot(runif(100))
> #+end_src
>
> #+RESULTS:
> [[file:SA_10.pdf]]
>
> Is this possible?
>
> Thanks,
>
> Rainer


Hi Rainer,

I am not aware of any method that directly does what you want.  But depending on
where the value of your variable ConNum is coming from, the
following might be a start for you.  It is based on the possibility to
insert elisp in the header arguments:

#+name: myconnum
- 19

#+header: :var ConNum=myconnum
#+header: :results graphics
#+header: :file (concat "SA_" (sbe myconnum) ".pdf")
#+header: :width 8
#+header: :height 8
#+header: :pointsize 8
#+begin_src R
  plot(runif(100), main=ConNum)
#+end_src

#+RESULTS:
[[file:SA_(19).pdf]]

Best,
Andreas

^ permalink raw reply	[flat|nested] 2+ messages in thread

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2012-03-29 13:38 [babel] file header argument includes other variable Rainer M Krug
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