Introduction to S-PLUS (and R)

70 pages
R is GNU S. R is a re-implementation of S. The two languages are superficially similar languages, but do not have identical underpinnings. (One big difference is in scoping rules). Furthermore, there are some packages (libraries) for certain statistical analyses written only for R (or S), and due to the differences between the two languages, the package runs error-free only in R (or S).