Nick Dokos <nicholas.dokos@hp.com> wrote:

> [...]

> FWIW, I don't get any error messages. I have no idea what the exported file
> should look like: I attach both the exported pdf and the exported html below
> (as well as the org file, which is just cut-n-pasted from what you posted).
 
> Versions:

> Org-mode version 7.7 (release_7.7.224.g6e14) GNU Emacs 24.0.50.2
> (x86_64-unknown-linux-gnu, GTK+ Version 2.22.0) of 2011-09-13

> I'll pull the newest bits and try again.

Thanks, Nick.  This is getting curiouser and curiouser.  I can now reliably
get documents exported using the vanilla 7.7 Org-Mode, but not with the
development version I currently have installed:

    Org-mode version 7.7 (release_7.7.304.g9da4)

I suspect that the following bit of the error message is the relevant one:

    org-babel-R-evaluate: Wrong number of arguments: #[(session body result-type
    result-params column-names-p row-names-p

but I don't know what to make of it.

In order to simplify the discussion, I've been working with some Org code that
I took from the "worg" web site.  Please see below for details.

I've also appended the pieces of my .emacs file that relate to finding Org
files.

At this point I guess I'm ready to declare victory and slink away, but it
WOULD be interesting to know what's going on.

-- Mike


----------

#+TITLE: Test 
#+AUTHOR: Michael Hannon
#+EMAIL: jm_hannon@yahoo.com
#+BABEL: :session *R* :cache yes :results output graphics :exports both :tangle yes 

#### Example taken from:
####    http://orgmode.org/worg/org-contrib/babel/how-to-use-Org-Babel-for-R.html

* Example of Org-Babel for R Literate Programming
** R text output
A simple summary. 
#+begin_src R 
  x <- rnorm(10)
  summary(x)
#+end_src

** R graphics output
Note we use the object =x= generated in previous code block, thanks to
the header option =:session *R*=.  The output graphics file is
=a.png=. 

#+begin_src R  :file a.png
  y <- rnorm(10)
  plot(x, y)
#+end_src

Same plot with larger dimension:

#+begin_src R  :file b.png :width 800 :height 800
  plot(x, y)
#+end_src


---------- Org-Mode path variables, standard and devel versions

(setq load-path (cons "/usr/local/emacs.d/ssh" load-path))
(require 'ssh)

;;;;;;(setq load-path (cons "/usr/local/emacs.d/org-mode/org-7.7/lisp" load-path))

;;;;;;(setq load-path (cons "/usr/local/emacs.d/org-mode/org-7.7/contrib/lisp" load-path))

(setq load-path (cons "/usr/local/emacs.d/org-mode/org-devel/org-mode/lisp" load-path))

(setq load-path (cons "/usr/local/emacs.d/org-mode/org-devel/org-mode/contrib/lisp" load-path))

(require 'org-install)