R is an integrated technical computing environment that combines sophisticated computation, advanced graphics and visualization, and a high-level programming language.

Rivanna: R is available through modules, with more than one version usually available.

module avail R

Rstudio is also supported through its own module.  It will load the default version of R; to use a different version load a specific R module after the rstudio module

module load rstudio

Followed optionally by a different R module.

ARCS also provides Revolution R as RevoR

module load RevoR