R

R is a programming language primarily for statistics and numerical analysis.

Installation
To see the available USE Flags: To install:

USE Flags
= enable X11 output (will want this if you want to view graphs in X)  = enable jpeg output = enable png output = readline support (makes interactive mode behave like bash) = adds tab completion for R in bash = install documentation = enable tk interface and library. Necessary for Rcmdr.

Integration with Other Programs
ESS, or Emacs Speaks Statistics, is an Emacs mode that can edit R files and start R from within Emacs. To install:.