Attachment seems to have failed I put the content of the file below.
2006/6/6, Johan Sandblom <[EMAIL PROTECTED]>:
> Since I sometimes use the open-source statistics environment R
> (http://www.r-project.org) as well as ConTeXt, I thought a module that
> could typeset R code as well as evaluate it on the fly would be
> useful. Borrowing largely without understanding but lots of trial and
> eror from m-gnustep.tex, I came up with the attached. Limited testing
> indicates it works, but at least one problem is apparent: the R code
> snippets have one unnecessary line break to start them and two after
> the end. How can I fix that? Of course, any other suggestions are also
> welcome.
>
> A recent R needs to be in the path, but given that, it seems to work
> on Windows XP as well as Linux.
>
> Regards, Johan
>
> PS Emacs users may appreciate the following to get r-mode where appropriate:
> (require 'mmm-mode)
> (setq mmm-global-mode 'maybe)
> (setq mmm-submode-decoration-level 2)
> (mmm-add-group
> 'context-plus
> '((context-MP
> :submode metapost-mode
> :face mmm-code-submode-face
> :front ".*\\\\start\\w*MP\\w*\\({\\w*}\\|\\[\\w*\\]\\|\\)\\W"
> :back ".*\\\\stop\\w*MP")
> (context-R
> :submode r-mode
> :face mmm-comment-submode-face
> :front ".*\\\\startR.*\\W"
> :back ".*\\\\stopR.*")))
> (add-to-list
> 'mmm-mode-ext-classes-alist '(context-mode nil context-plus))
>
> --
> Johan Sandblom N8, MRC, Karolinska sjh
> t +46851776108 17176 Stockholm
> m +46735521477 Sweden
> "What is wanted is not the will to believe, but the
> will to find out, which is the exact opposite"
> - Bertrand Russell
>
>
>
% Copyright Johan Sandblom, distributed and redistributable under the
% terms of the GNU Lesser General Public License.
\unprotect
\newcounter\Rnumber
% I would like to reduce this two-stage call, but then line-endings disappear
\def\startR%
{\bgroup
\obeylines
\catcode`\%=\@@letter
\catcode`\#=\@@letter
\dostartR%
}%
\def\dostartR#1\stopR%
{\doglobal\increment\Rnumber%
\letgvalue{rcs:n:\Rnumber}\Rnumber%
\setgvalue{rcs:d:\Rnumber}{#1}%
\edef\Rfile {\bufferprefix R-\Rnumber}%
\bgroup%
\the\everyR%
\immediate\openout\scratchwrite=\Rfile.r%
\def\par{\rawcharacter{10}}%
\immediate\write\scratchwrite{\getvalue{rcs:d:\Rnumber}}%
\immediate\closeout\scratchwrite%
\egroup%
\startmode[*\v!first]%
\runR%
\stopmode
\typeRout%
\egroup}%
\def\startRhidden%
{\bgroup
\obeylines
\catcode`\%=\@@letter
\dostartRhidden{}}
\def\dostartRhidden#1\stopRhidden
{\doglobal\increment\Rnumber
\letgvalue{rcs:n:\Rnumber}\Rnumber
\setgvalue{rcs:d:\Rnumber}{#1}%
\edef\Rfile {\bufferprefix R-\Rnumber}%
\bgroup
\the\everyR%
\immediate\openout\scratchwrite=\Rfile.r%
\def\par{\rawcharacter{10}}%
\immediate\write\scratchwrite{\getvalue{rcs:d:\Rnumber}}%
\immediate\closeout\scratchwrite%
\egroup
\startmode[*\v!first]%
\runR%
\stopmode
\egroup}
\newtoks\everyR
\appendtoks
\obeylines
\to \everyR
% The call to R has -q in order to prevent banner, --save to make sure
% it saves the workspace after the run, --restore to make sure it
% reads any workspace from a previous session
\def\runR
{\executesystemcommand{R -q --save --restore < \Rfile.r > \Rfile.Rout}}
\def\typeRout
{\typefile{\Rfile.Rout}}
\protect \doifnotmode{demo}{\endinput}
\starttext
\startR
a <- "bla"
b <- "blabla"
ls()
\stopR
bla bla
\startRhidden
rm(list=ls())
save.image()
\stopRhidden
bla
\startR
ls()
ushape <- c(rexp(500000), 12-rexp(500000))
pdf("ushape.pdf")
par(mfrow=c(1,2))
hist(ushape)
plot(density(ushape), main="Density")
dev.off()
\stopR
\input tufte
\input knuth
\startR
x <- rnorm(900)
y <- rexp(900)
# test comment
f <- gl(9,9,900)
summary(aov(y~x+Error(f)))
library(lattice)
pdf("lattice.pdf")
xyplot(y~x|f)
dev.off()
\stopR
\placefigure[here]{}{\externalfigure[lattice]}
\placefigure[here]{}{\externalfigure[ushape]}
\input tufte
\startR
(test <- ".*\\\\ []{}=?!+%#|<|>@$")
cat(test)
\stopR
\input bryson
\input knuth
\startR
a.df <- data.frame(a=1:2, b=rnorm(2))
a.df$a
testfunction <- function(a=NULL, ...) {
for(i in 1:length(a)) {
gsub(a[[i]], "([a-r]|[A-R])", "bla")}
print(a)}
\stopR
\stoptext
--
Johan Sandblom N8, MRC, Karolinska sjh
t +46851776108 17176 Stockholm
m +46735521477 Sweden
"What is wanted is not the will to believe, but the
will to find out, which is the exact opposite"
- Bertrand Russell
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