[PATCH] Re: [BUG] [babel] R graphics header arg :units

[tsd@tsdye.com (Thomas S. Dye)]

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Andreas Leha <andreas.leha@med.uni-goettingen.de> writes:

> Hi all,
>
> I am having troubles in using the header argument :units which is
> implemented for R source blocks.  Example:
>
> #+begin_src R :results graphics :file wideplot.png :width 14 :height 7 :units "cm"
>   plot(1:10, 1:10)
> #+end_src
>
>
> This expands to
>
> : png(filename="wideplot.png",height=7,units=cm,width=14)
> : plot(1:10, 1:10)
> : dev.off()
>
> and leads -- when evaluated -- to the error
>
> : Fehler in match.arg(units, c("in", "px", "cm", "mm")) : 
> :   'arg' must be NULL or a character vector
>
> I guess this is a bug, correct?  Otherwise, how do I correctly use
> this header argument?
>
> Regards,
> Andreas
>
>
>

Aloha all,

The attached patch handles quoted string values for R device header
arguments.  With the patch the following works as expected:

#+header: :width 100 :height 100 :units "mm" :res 120
#+BEGIN_SRC R :results graphics :file "test.png"
x <- c(1,2,3,4,5)
y <- x
plot(x,y)
#+END_SRC

All the best,
Tom


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From b8aa7b26f56300faadd1a40433208ef18db8ae73 Mon Sep 17 00:00:00 2001
From: Thomas Dye <tsd@tsdye.com>
Date: Mon, 18 Jun 2012 17:26:09 -1000
Subject: [PATCH] * lisp/ob-R.el: Handle quoted string values to device header
 arguments

---
 lisp/ob-R.el |    2 +-
 1 files changed, 1 insertions(+), 1 deletions(-)

diff --git a/lisp/ob-R.el b/lisp/ob-R.el
index d23f269..0802736 100644
--- a/lisp/ob-R.el
+++ b/lisp/ob-R.el
@@ -260,7 +260,7 @@ current code buffer."
     (setq args (mapconcat
 		(lambda (pair)
 		  (if (member (car pair) allowed-args)
-		      (format ",%s=%s"
+		      (format ",%s=%S"
 			      (substring (symbol-name (car pair)) 1)
 			      (cdr pair)) ""))
 		params ""))
-- 
1.7.5.4


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-- 
Thomas S. Dye
http://www.tsdye.com