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%%
%% Copyright (C) 2013 by Thomas Bogue
%% This file may be distributed and/or modified under the
%% conditions of the LaTeX Project Public License, either
%% version 1.2 of this license or (at your option) any later
%% version. The latest version of this license is in:
%%
%% http://www.latex-project.org/lppl.txt
%%
%% and version 1.2 or later is part of all distributions of
%% LaTeX version 1999/12/01 or later.
%%
\NeedsTeXFormat{LaTeX2e}
\ProvidesPackage{rterface}[2013/04/19 interface to the R computational program from within LaTeX]
\RequirePackage{newfile}
\newoutputstream{Routput}
\openoutputfile{\jobname.R}{Routput}
\newinputstream{Rinput}
\IfFileExists{\jobname.R.out}{}{% if input file doesn't exist
\PackageWarning{r}{the R output file \jobname.R.out doesn't exist -- create it by running R --slave < \jobname.R > \jobname.R.out}%
\newoutputstream{Rtmp}% create it with no content
\openoutputfile{\jobname.R.out}{Rtmp}%
\addtostream{Rtmp}{0}%
\closeoutputstream{Rtmp}%
}
\openinputfile{\jobname.R.out}{Rinput}
\AtEndDocument{%
\closeoutputstream{Routput}%
\closeinputstream{Rinput}%
}
\begin{writeverbatim}{Routput}
backslash<-"\\"
percent<-"%"
latex.table<-function(data,nrows) {
tmp<-unlist(data);dim(tmp)<-c((nrows),length(tmp)/nrows);
for (i in 1:dim(tmp)[1]) {
cat(tmp[i,1]);
for (j in 2:dim(tmp)[2]) {
cat(" &",tmp[i,j]);
};
cat("\\\\");
};
}
topercent<-function(x,r=0){paste(round(x*100,r),"\\%",sep="")}
\end{writeverbatim}
\newcommand{\Rtilde}{\addtostream{Routput}{\noexpand~}}
\def\Rcmd{\@Rbreakcodes\@Rcmdwitharg}
\def\@Rcmdwitharg#1{\immediate\addtostream{Routput}{invisible({#1})}\@Rfixcodes}
\newcommand{\Rvalue}{\@ifstar\@Rvaluestar\@Rvalue}
\newcommand{\@Rvalue}[2][4]{\ensuremath{\textrm{\@Rvaluestar{signif(#2,#1)}}}}
\newcommand{\@Rvaluestar}[1]{\addtostream{Routput}{cat(#1,"\@backslashchar n")}\readaline{Rinput}}
\newcommand{\Rtable}[2]{%
\ifeof\@nameuse{Rinputinstre@m}%
\addtostream{Routput}{cat(latex.table(c(#1),#2),"\@backslashchar n")}%
0\\%
\else%
\Rvalue*{latex.table(c(#1),#2)}%
\fi%
}
\newcommand{\Rset}{\@Rbreakcodes\@ifstar\@Rsetstar\@Rset}
\newcommand{\@Rset}[3][4]{\Rcmd{#2<-#3}\@Rcodeformat{#2 = #3 = \Rvalue[#1]{#3}}\@Rfixcodes}
\newcommand{\@Rsetstar}[3][4]{\Rcmd{#2<-#3}\@Rcodeformat{#2 = \Rvalue[#1]{#3}}\@Rfixcodes}
\newcommand{\Rcode}{\@Rbreakcodes\@Rcode}
\newcommand{\@Rfixcodes}{\catcode`\%=14\catcode`\$=3\catcode`\^=7\catcode`\_=8\catcode`\&=4\catcode`~=13}
\newcommand{\@Rbreakcodes}{\catcode`\$=11%
\catcode`\^=11%
\catcode`\_=11%
\catcode`\&=11%
\catcode`~=11%
\catcode`~=11}
\def\@Rcode#1{\Rcmd{#1}\@Rcodeformat{#1}\@Rfixcodes}
%\newcommand{\@Rcodeformat}[1]{\noindent\obeyspaces\texttt{#1}\\\noindent}
\newcommand{\@Rcodeformat}[1]{\par\noindent\obeyspaces\texttt{#1}\par\noindent}
\newlength{\@Rtmplength}
\settowidth{\@Rtmplength}{\Rvalue{0}}
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