Description:

`GNU S' - A language and environment for statistical computing and
graphics. R is similar to S, which was developed at Bell Laboratories
by John Chambers et al. It provides a wide variety of statistical and
graphical techniques (linear and nonlinear modelling, statistical
tests, time series analysis, classification, clustering, ...).

R is designed as a true computer language with control-flow
constructions for iteration and alternation, and it allows users to
add additional functionality by defining new functions. For
computationally intensive tasks, C and Fortran code can be linked and
called at run time.