RStudio is a software application that provides a powerful user interface for the R language which aims to make R easier to use and more productive. It is also free and works on Windows, Mac OS, and UNIX/Linux.


The Introduction to RStudio for SAS users is a best practices document for those who have had prior training in the SAS programming language, but are new to the R language. It does not make one-to-one comparisons with SAS commands, statements or syntax, but points out important similarities and differences between SAS and R where appropriate, in an attempt to aid the transition to the R language for users familiar with SAS programming. In such situations, a separate information box ‘For SAS Users’ is provided. However, prior experience with SAS is not required. This document may also serve as a stand-alone introduction to RStudio.