If you want to insert R code in your LaTeX document, you might want to consider using the “listings” package.
I have written some commands to display my R code in LaTeX in a similar format that my RStudio presents. ▲
\documentclass[a4paper, 12pt]{article}
\usepackage[svgnames]{xcolor}
\usepackage{listings}
\lstset{language=R, % set programming language
basicstyle=\small\ttfamily, % basic font style
stringstyle=\color{DarkGreen},
otherkeywords={0,1,2,3,4,5,6,7,8,9},
keywordstyle=\color{Blue}, % keyword style
commentstyle=\ttfamily \color{DarkGreen}, % comment style
backgroundcolor=\color{AliceBlue}, % background colour
numbers=left, % display line numbers on the left side
numberstyle=\ttfamily\color{Gray}\footnotesize, % line numbers
}
\title{LaTeX}
\author{handsonkeyboard}
\begin{document}
\maketitle
\begin{lstlisting}[caption={example 1}]
m1 = matrix(c(1,2,3,4,5,6), nrow=3, ncol=2, byrow = TRUE)
m1 # print the matrix
\end{lstlisting}
\end{document}
