# Re: [R] How to format R code in LaTex documents

From: Frank E Harrell Jr <f.harrell_at_vanderbilt.edu>
Date: Mon 15 Jan 2007 - 14:12:33 GMT

> Hi,
>
> I am planning on putting some R script in an appendix of a LaTex
> document. Can anyone recommend me a way of how to format it? Is there
> a way to keep all line breaks without having to insert \\ in every
> single line?
>
> Thank you!
> Benjamin



Here's one way and I would appreciate anyone's improvements. I've also included solutions from two others. Please let me know what you decide to use. -Frank

\usepackage{listings,relsize}
showstringspaces=false,%
xleftmargin=4ex,literate={<-}{{$\leftarrow$}}1 {~}{{$\sim$}}1}
\lstset{escapeinside={(*}{*)}} % for (*\ref{ }*) inside lstlistings (S
code)

. . .
\begin{lstlisting}

. . . S code . . .
\end{lstlisting}

The following code was provided by Vincent Goulet:

listings is a great package to highlight R keywords and comments and --- that
was my main use of the package --- index those keywords. I found that I had to slightly redefine the list of keywords included in listings. I still did not take the time to submit a patch to the author, though...

In any case, here's what I use, if it can be of any help to anyone:

\lstdefinelanguage{Renhanced}[]{R}{%

morekeywords={acf,ar,arima,arima.sim,colMeans,colSums,is.na,is.null,%

     mapply,ms,na.rm,nlmin,replicate,row.names,rowMeans,rowSums,seasonal,%
sys.time,system.time,ts.plot,which.max,which.min},

deletekeywords={c},
alsoletter={.\%},%
alsoother={:_\\$}}
\lstset{language=Renhanced,extendedchars=true,

basicstyle=\small\ttfamily,
keywordstyle=\mdseries,
showstringspaces=false,
index=[1][keywords],
indexstyle=\indexfonction}

with

\newcommand{\indexfonction}[1]{\index{#1@\texttt{#1}}}

Anupam Tyagi provided the following:

\documentclass{report}
\usepackage{listings}
\begin{document}

Somethings .....

\lstset{% general command to set parameter(s)
basicstyle=\small, % print whole in small stringstyle=\ttfamily, % typewriter type for strings numbers=left, % numbers on the left
numberstyle=\tiny, % Tiny numbers
stepnumber=2, % number every second line of code numbersep=5pt, % 5pt seperation between numbering and code listing language=R }

\end{document}

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