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THE BASIC R README (See "FAQ" and "RESOURCES" for more detailed information) (See "INSTALL" for help on installation)1. INTRODUCTIONThis directory contains the Unix source code tree for R, which isa language which is not entirely unlike the S language developedat AT&T Bell Laboratories by Rick Becker, John Chambers and AllanWilks. Indeed in the (present) absence of an R manual, you can(mostly) get along by using the S manual.R is free software distributed under a GNU-style copyleft.Currently the software is undergoing active development. Discussionof the development process is carried out on the "r-devel" mailinglist. See the file RESOURCES for details on how to subscribe tothis list.2. HISTORYR was initially written by Robert Gentleman and Ross Ihaka of theStatistics Department of the University of Auckland. In addition,a large group of individuals has contributed to R by sending codeand bug reports.Since mid-1997 there has been a core group who can modify the Rsource code CVS archive. The group currently consists of Douglas Bates, Peter Dalgaard, Robert Gentleman, Kurt Hornik, Ross Ihaka, Friedrich Leisch, Thomas Lumley, Martin Maechler, Guido Masarotto, Paul Murrell, Brian Ripley, Heiner Schwarte, and Luke Tierney.As noted above, discussions of the development process takeplace in the r-devel mailing list.3. PRESENT STATUSThe present version implements most of the functionality in thefirst S book (the "Blue Book") and many of the applications. Inaddition, we have implemented a certain amount of functionalityfrom the second S book (the "White Book"). In particular we havefunctioning versions of "aov", "glm", "lm" and "loess", and "tree"is available as an add-on package.What we have in the way of manual is in the directory in an"output independent" form which can be used to create versionsfor HTML, LaTeX, troff etc.4. GOALSOur aim at the start of this project was to demonstrate that it waspossible to produce an S-like environment which did not suffer fromthe memory-demands and performance problems which S has. It is onlymore recently that we have started trying to turn R into a "real"system. In the short term we hope to create a small portable freesystem which will provide most of the functionality of S and someextensions.R is being converted to GNU coding standards.Sincerely,The R Core Team.