摘要：This edition of R News accompanies the release of R
2.0.0. Comparing the length of the pre-1.0.0 and post-
1.0.0 NEWS files shows that R has certainly changed
enough since 1.0.0 for a new major version. The
base R language has added formal classes, namespaces,
exception handling, connections, and many
packaging and QA tools, and done away with the
underscore as an assignment operator. A Macintosh
version has been added and the Windows GUI
extended. Even more dramatic is the change in
the number of contributed packages, some of which
(lattice, nlme, gam) were on the wishlist back at
1.0.0, but many more that show how the range of
R users has expanded. Version 2.0.0 does not introduce
many radical changes, but Brian Ripley’s article
describes one important and long planned improvement
to R’s memory usage and Paul Murrell’s article
explains new graphics features that give users more
control over details of rendering.
