Re: Babel: interweaving code and results?

[Dan Davison <davison@stats.ox.ac.uk>]

Erik Iverson <eriki@ccbr.umn.edu> writes:

> David,
>
> On 08/18/2010 08:09 AM, David Hajage wrote:
>> Hello,
>>
>> I am back with babel and R with a new question. Is it possible to
>> interweave each line of code with its results?
>>
>> An example to explain what I mean:
>>
>> #+SRCNAME: foo
>> #+BEGIN_SRC R :results output :exports results
>>    2+2
>>    3+3
>> #+END_SRC
>>
>> #+results: foo
>> : [1] 4
>> : [1] 6
>>
>> When exporting (to html or latex), I would like to print what is going
>> on in the R console. So, I would like:
>>
>> #+results: foo
>> :> 2+2
>> : [1] 4
>> :> 3+3
>> : [1] 6
>>
>> Is it possible, or eventualy planned for the futur?

Hi David,

This is actually quite easy, although I don't think anyone's flagged
this possibility up: just do

(setq org-babel-R-command "R --silent --no-save")

(Our default is --slave --no-save) There's an example session below. By
the way, can I just check that you're aware of the ':exports both'
option? That's the canonical Org way of exporting both code and
results. It doesn't interleave them: it's more geared towards 'one code
block <-> one result'. But I understand that there may be situations
where interleaved is desired.

Erik -- You might well be right that we should add an :interleave option
to modify :results output like this.

--8<---------------cut here---------------start------------->8---
#+begin_src emacs-lisp
org-babel-R-command
#+end_src

#+results:
: R --slave --no-save

#+begin_src R :results output
2+2
3+3
#+end_src

#+results:
: [1] 4
: [1] 6

#+begin_src emacs-lisp
(setq org-babel-R-command "R --silent --no-save")
#+end_src

#+results:
: R --silent --no-save

#+begin_src R :results output
2+2
3+3
#+end_src

#+results:
: > 2+2
: [1] 4
: > 3+3
: [1] 6
: > 
--8<---------------cut here---------------end--------------->8---

[Maybe we can battle that trailing prompt character]

Dan

>
> I think I put together a :results weave option a couple
> months ago that did just this.
>
> I'll have to look if I can find it, I'll
> let you know.
>
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