From mboxrd@z Thu Jan  1 00:00:00 1970
From: Eric Schulte <eric.schulte@gmx.com>
Subject: Re: issue with babel R evaluate session vs external process
Date: Wed, 15 Feb 2012 07:33:15 -0700
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To: Thomas Alexander Gerds <tagteam@sund.ku.dk>
Cc: emacs-orgmode@gnu.org

When executing your example below on my system both code blocks work as
shown below.

#+begin_src R :results output :exports results
  foo=matrix(1:2)
  foo
#+end_src

#+RESULTS:
:      [,1]
: [1,]    1
: [2,]    2

#+begin_src R :results output :exports results :session *R*
  foo=matrix(3:8)
  foo
#+end_src

#+RESULTS:
:      [,1]
: [1,]    3
: [2,]    4
: [3,]    5
: [4,]    6
: [5,]    7
: [6,]    8


If you are not using the latest version of Org-mode (from git) I would
suggesting updating to the Org-mode git HEAD which should hopefully fix
this issue.

Thomas Alexander Gerds <tagteam@sund.ku.dk> writes:

> still a beginner, and maybe therefore, in my setup (release is: 7.8.03,
> emacs 23.2.1) the following occurs
>
> -------------org.snip-----------------------
> * here it works: org-ctrl-c-ctrl-c and export
>
> #+begin_src R :results output :exports results
>   foo=matrix(1:2)
>   foo
> #+end_src
>
> #+RESULTS:
> :      [,1]
> : [1,]    1
> : [2,]    2
>
> * here it does not:
>
> #+begin_src R :results output :exports results :session *R*
>   foo=matrix(3:8)
>   foo
> #+end_src
>
> the buffer *R* shows this:
>
>> 'org_babel_R_eoe'
> [1] "org_babel_R_eoe"
> ----------------org.snap------------------
>
> some debugging revealed this:
>
> ELISP> (org-babel-R-evaluate-session "*R*" "foo=matrix(1:2)\nfoo"
> ELISP> output '("output" "replace") nil nil)
> *** Eval error ***  
> ELISP> (org-babel-R-evaluate-external-process "foo=matrix(1:2)\nfoo"
> ELISP> output '("output" "replace") nil nil)
> "     [,1]\n[1,]    1\n[2,]    2\n"
>
> but strange-enough when I try to edebug org-babel-R-evaluate-session, I
>  get an error:
>
> Symbol's value as variable is void: edebug-after
>
> can someone explain this? 
>
> thanks!
> tomy

-- 
Eric Schulte
http://cs.unm.edu/~eschulte/