What documentation exists for R?

Chapter 5: R Add-On Packages 63
5.1.3 Add-on packages from Omegahat
The Omegahat Project for Statistical Computing provides a variety of open-source software
for statistical applications, with special emphasis on web-based software, Java, the Java
virtual machine, and distributed computing. A CRAN style R package repository is available
via http://www.omegahat.org/R/.
Currently, there are the following packages.
Aspell An interface to facilities in the aspell library.
CGIwithR Facilities for the use of R to write CGI scripts.
CORBA Dynamic CORBA client/server facilities for R. Connects to other CORBAaware
applications developed in arbitrary languages, on different machines and
allows R functionality to be exported in the same way to other applications.
Combinations
Compute the combinations of choosing r items from n elements.
IDocs Infrastructure for interactive documents.
OOP OOP style classes and methods for R and S-Plus. Object references and classbased
method definition are supported in the style of languages such as Java
and C++.
RCurl Allows one to compose HTTP requests to fetch URIs, post forms, etc., and
process the results returned by the Web server.
RDCOMClient
Provides dynamic client-side access to (D)COM applications from within R.
RDCOMEvents
Provides facilities to use R functions and objects as handlers for DCOM events.
RDCOMServer
Facilities for exporting S objects and functions as COM objects.
REmbeddedPostgres
Allows R functions and objects to be used to implement SQL functions —
per-record, aggregate and trigger functions.
REventLoop
An abstract event loop mechanism that is toolkit independent and can be used
to to replace the R event loop.
Rexif Extract meta-information from JPEG files.
RGdkPixbuf
S language functions to access the facilities in the GdkPixbuf library for manipulating
images.
RGnumeric
A plugin for the Gnumeric spreadsheet that allows R functions to be called
from cells within the sheet, automatic recalculation, etc.
RGtk Facilities in the S language for programming graphical interfaces using Gtk, the
Gnome GUI toolkit.