Re: Babel: interweaving code and results?

From: Dan Davison <davison@stats.ox.ac.uk>
To: David Hajage <dhajage@gmail.com>
Cc: emacs-orgmode@gnu.org
Subject: Re: Babel: interweaving code and results?
Date: Wed, 18 Aug 2010 12:07:04 -0400	[thread overview]
Message-ID: <87zkwjzyzb.fsf@stats.ox.ac.uk> (raw)
In-Reply-To: <AANLkTi=+gWeeGmBZOnr054v5SqZPJbO6RQChG01tAyGR@mail.gmail.com> (David Hajage's message of "Wed, 18 Aug 2010 16:57:28 +0200")

David Hajage <dhajage@gmail.com> writes:

> exactly what I want! But an new option would be greater...

It wouldn't be hard to add an ":interleave" (or ":echo") option that has
this effect for external R processes. But we should really address a
couple of other issues:

- implementation for :session

  (in principle sounds not hard, as it involves *not* doing something
  (i.e. not removing commands from comint output)).

- implementation for other external interpreter processes

  If anyone has instructions for other interpreters then that would
  help. For bash, it's somewhat similar to 'bash -x'. I looked at man
  python and didn't see anything; perhaps it is accomplished by
  modifying the output stream when python is running rather than as a
  command line option to the interpreter. ruby? etc.

Dan

>
> Yes, I know about :exports both, but if code and results are interleaved, I
> don't need to export the code (in my case). That's why I use :exports
> results.
>
> Thank you very much for this.
>
> David
>
>
> On Wed, Aug 18, 2010 at 16:49, Dan Davison <davison@stats.ox.ac.uk> wrote:
>
>> 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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