I'm generating pdf files from R markdown files (.Rmd). I'd like to style the output with the LaTeX listings package. Is there some way to indicate in the .Rmd file which style to wrap the R output in?
For example, the following Rmd:
```{R}
1:10
````
run through knitr and pandoc produces:
\begin{lstlisting}[language=R]
1:10
\end{lstlisting}
\begin{lstlisting}
[1] 1 2 3 4 5 6 7 8 9 10
\end{lstlisting}
I have not found a way to differentiate the two listings in the pdf output. I think I need either a style on one or both lstlistings, or to give the output a language option that I could then add to the header. For example, this would work:
\begin{lstlisting}[language=R,style=Rsource]
1:10
\end{lstlisting}
\begin{lstlisting}
[1] 1 2 3 4 5 6 7 8 9 10
\end{lstlisting}
Because I could add something to the header to style Rsource differently from the default listings:
\lstset{language=R,frame=single}
\lstdefinestyle{Rsource}{
backgroundcolor=\color[gray]{0.95},
}
This boxes both code and output, but shades only the code. Is there a way to specify this from the Rmd source? I don't want to manually alter the tex output.
I know I can use the pandoc --highlighting-style option, and that's my alternative approach. However, I would like to box both code and output, and only shade the code. I know how to do this with listings styles (once the listings are labeled with the right options), but I'm not sure it's possible with the pandoc styles.
Follow-up
I've come up with a solution by filtering the pandoc output through sed to add the style options I need. More details are on my related post over on tex.stackexchange. I'm still interested in an answer that uses built-in features of knitr and/or pandoc.
