R is a language and environment for statistical computing and graphics. It is a GNU project which is similar to the S language and environment which was developed at Bell Laboratories (formerly AT&T, now Lucent Technologies) by John Chambers and colleagues. R can be considered as a different implementation of S. There are some important differences, but much code written for S runs unaltered under R.
R provides a wide variety of statistical (linear and nonlinear modelling, classical statistical tests, time-series analysis, classification, clustering, ...) and graphical techniques, and is highly extensible. The S
- Changes when redirection of a http:// URL to a https:// URL is encountered:
- The internal methods of download.file() and url() now report that they cannot follow this (rather than failing silently).
- (Unix-alike) download.file(method = "auto") (the default)re-tries with method = "libcurl".
- (Unix-alike) url(method = "default")
- OS X 10.9 or later
- X11 system manager (optional, now requires XQuartz)
- GNU g77 compiler and tcltk libraries included with the installer