diff options
Diffstat (limited to 'tex/context/base/m-r.tex')
| -rw-r--r-- | tex/context/base/m-r.tex | 83 |
1 files changed, 70 insertions, 13 deletions
diff --git a/tex/context/base/m-r.tex b/tex/context/base/m-r.tex index fe208cf75..244b62c36 100644 --- a/tex/context/base/m-r.tex +++ b/tex/context/base/m-r.tex @@ -84,35 +84,62 @@ \def\stopRhidden {\doifmode{*\v!first}\runR} +% \def\runR % " " needed to preserve < > +% {\executesystemcommand{texmfstart +% --ifchanged=\Rfile\space --direct R +% "-q --save --restore < \Rfile\space > \Rfile.out"}} + \def\runR {\executesystemcommand{texmfstart -% --ifchanged=\Rfile\space bin:R --ifchanged=\Rfile\space --direct R - "-q --save --restore < \Rfile\space > \Rfile.out"}} + CMD BATCH -q --save --restore \Rfile\space \Rfile.out}} \protect \doifnotmode{demo}{\endinput} % Johan's test file: +\usemodule[r] + +\def\R{R} + +\setupcolors[state=start] + +\setuptyping + [Rtype] + [color=darkgreen] + \starttext +First a test of whether the workspace is persistent: +bla + \startR a <- "bla" b <- "blabla" ls() \stopR -bla bla +One \R run ends, another begins. + +\startR +ls() +\stopR + +Now follows a hidden \R run which cleans the R workspace \startRhidden rm(list=ls()) save.image() \stopRhidden -more bla +What is in the workspace now? \startR ls() +\stopR + +Then a small test of generating a graphic, in this case a pdf +\startR ushape <- c(rexp(500000), 12-rexp(500000)) pdf("ushape.pdf") par(mfrow=c(1,2)) @@ -121,7 +148,12 @@ plot(density(ushape), main="Density") dev.off() \stopR -\input tufte \par \input knuth +The graphic \type{ushape.pdf} can be included in the standard \CONTEXT\ way +\startbuffer +\placefigure{An ugly distribution}{\externalfigure[ushape]} +\stopbuffer +\typebuffer +\getbuffer \startR x <- rnorm(900) @@ -135,25 +167,50 @@ xyplot(y~x|f) dev.off() \stopR -\placefigure{}{\externalfigure[lattice]} -\placefigure{}{\externalfigure[ushape]} +With \type{Sweave} lattice graphics calls must be enclosed in +\type{print()} statements but that is not necessary here. -\input tufte +\startbuffer +\placefigure[here]{Lattice graphics}{\externalfigure[lattice]} +\stopbuffer +\typebuffer +\getbuffer +A test string with nasty characters. In \R, the result of a statement +is not printed by default. Enclosing the statement in parentheses, +however causes the parser to see only the value of the statement and +applying the \type{print()} method. \startR -(test <- ".*\\\\ []{}=?!+%#|<|>@$") +(test <- ".*\\\\ [[{[{]{[{[{}\]\}=?!+%#|<|>@$") cat(test) \stopR -\input bryson \par \input knuth +A combination +\startbuffer +\placefigure{A combination of two previously used graphics}{ +\startcombination[2*1] + {\externalfigure[ushape][width=.4\textwidth]}{The first graphic, rescaled} + {\externalfigure[lattice][width=.4\textwidth]}{The second graphic, rescaled}} +\stopcombination +\stopbuffer +\typebuffer +\getbuffer + +Testing a function definition. \startR a.df <- data.frame(a=1:2, b=rnorm(2)) a.df$a testfunction <- function(a=NULL, ...) { - for(i in 1:length(a)) { - gsub(a[[i]], "([a-r]|[A-R])", "bla")} - print(a)} + for(i in 1:length(a)) { + gsub(a[[i]], "([a-r]|[A-R])", "bla")} + print(a)} +\stopR + +What is in the workspace now? + +\startR +ls() \stopR \stoptext |