The R programming language, sometimes described as "GNU S", is a mathematical language and environment used for statistical analysis and display.
It is based upon S which was developed by John Chambers of Bell Laboratories and described in the paper "Evolution of the S Language"[1]. R is considered by its developers to be an implementation of S, with semantics derived from Scheme.
R is freely available under the GNU GPL and is available for Windows, Macintosh, and many Unix operating systems.
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