This site is intended as an intermediate repository for more or
less finalized ideas and plans for the R statistical system. Most
parts of the site are open to the public, and we welcome discussions
on the ideas, but please do not take them for more than that, in
particular there is no commitment to actually carry out the plans in
finite time unless expressedly stated.
The site also includes a collection of technical papers about R and the R Blog.
For general information about R see the R Project's homepage.
This page (and most of its links) are updated hourly and so may not
be absolutely current. The up-to-the-minute version can be seen at
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Version 4.0.2 ("Taking Off Again") was released on 2025-06-22.
The overall release schedule is to have annual x.y.0 releases in
Spring, with patch releases happening on an as-needed basis. It is
intended to have a final patch release of the previous version shortly
before the next x.y.0 release.
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The latest 熊猫加速器app下载安装
file, which has a section for the current development version of R,
and below that for the patches in the current R-patched (part of the
previous series).
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Subversion log
from the start of 2017 to today.
This log is only updated daily. To get absolutely
current information, use Subversion, e.g. for all changes in the last
week,
svn log -v -r HEAD:\{`date +%Y-%m-%d -d'7 days ago'`\} http://svn.r-project.org/R
For older logs in text format, try changing the filename, e.g. to "R_svnlog_2016".
Updating packages for changes in R
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Package check summaries:
CRAN
Bioconductor
Building and checking R source packages for Windows: http://win-builder.r-project.org/
Subversion tips -- notably for R-core
Development guidelines
TODO lists
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tcltk package.
List from Brian Ripley.
List from Kurt Hornik.
List from Martin Mächler.
List from Paul Murrell.
List from Duncan Temple Lang.
RFCs and writeups
A redesign of
how
to customise a grob in 'grid'.
Guidelines for *.Rd files.
Translating R Messages: notes for
translation teams.
List of translation teams: contact
these people if you want to help with translations, or contact
R-core if you want to add your language to the list.
Resources for portable programming.
Using Valgrind on the R memory manager
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support for raster images in the graphics engine.
An RFC on a proposal to make sRGB the
internal colorspace for R graphics.
A description of the parse_Rd() parser for Rd files. This
document also includes a draft description of the new facility for executing R code
within Rd man pages.
How to write model-fitting
functions in R, and especially on how to enable all the safety features.
A list of things to consider for a possible re-design of the R homepage.
A brief writeup on how to tag R
source files for use with Emacs.
Some notes on reference counting.
Copy of the noweb sources here, needed for configuring R in maintainer
mode.
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Material in this section is at least 6 months' old, and may or may not
still be relevant. In particular, some of the proposals here have
been implemented in slightly different ways, or since been extended.
Subversion/CVS logs for
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2011,
2010,
2009,
2008,
2007,
苹果熊猫加速器app下载,
2005,
2004 and
2003
Updating packages for changes in R
R 2.12.x
R 2.7.x
R 2.1.x
R 2.0.x
R 1.9.x
R 1.8.x
R 1.7.x
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Notes on Encodings and R,
including the current implementation planned for 2.1.0.
Open bugs in the repository (original
correspondence truncated to 500 lines per message). No longer updated.
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RFCs and writeups
RFC on Sparse matrices in R
An embeddable R library
Some early notes on name
spaces, and the name
space implementation for R 1.7 (also available
in pdf format).
Some notes on references,
external objects, or mutable state for R and a simple
implementation of external references and finalization added
to 1.2. A 熊猫森林中文版下载- 全方位下载:2021-8-3 · 熊猫森林免费版是一款非常有趣且好玩的手机游戏，游戏中有着非常可爱Q萌的小熊猫等着您细心照顾，游戏中玩家伞要照顾小熊猫的生活起居，他生病了要给他打针吃药，他心情不好了要哄他开心，他高兴了你可伡跟他一起happy，总之，你得 provides an example of using this facility.
An outline of a preliminary weak reference mechanism is available.
Details are likely to change after more experience is gained with
this in some internal uses.
Some notes on the generational
collector and its write
barrier
Some 熊猫加速器安卓官网 preliminary notes on byte code
compilation for R
Luke's notes on
threading, GUI, and asynchronous IO issues. Some of the
reference links are messed up; the full references are in the BibTeX
file. Duncan also has a set of
notes on threading.
A simple
alternate experimental implementation of tcltk as a proof of
concept for an approach that uses a separate GUI server process
with inter-process message passing (which may be easier to get to
work across UNIX/Windows/MacOS).
A
preliminary experimental implementation of exception handling
for R. Also a simple
mechanism for managing dynamic state.
Some notes on possible enhancements to
the package installation procedure.
A description
of a new way of resolving C and Fortran routines
in .C, .Call and 熊猫加速器最新版下载 calls.
Notes
and 苹果熊猫加速器app下载
of the new, extensible mechanism for converting arguments in
.C() calls.
Developers notes on the
methods and classes
package. Related pages discuss compatibility issues for formal vs
old-style classes and methods, and other questions of strategy for
future work, including areas where we are
beginning to extend the API in Programming with Data.
Notes
on some recent changes to functions get,
assign, and their relatives, to allow consistent use
of environments and other cleanups.
Dataeditor restructuring ideas (outdated)
Thoughts on embedding Tk in R (outdated)
Notes on the = operator in assignments.
Some notes on a new save/load format and a serialization
mechanism for R.
An RFC on
changes to R base graphics and the graphics device drivers.
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on callbacks that are invoked at the end of each
successfully completed top-level expression.
A document-in-progress describing the
changes to the graphics system
from 1.3.1 to 1.4.0
A proposal for
changing the specification of fonts in R and
another one extending the discussion to
line end/joins
and alpha transparency specifications in R.
A
list of R devices, including device maintainers and pointers to
where the code resides.
A package that provides a
null graphics device; includes a vignette, "devNull", that
documents how to create a new graphics device as an add on package.
Description of the nonstandard
evaluation rules in R 1.5.1 and some
suggestions. (updated). Also an R
function and docn for making model
frames from multiple formulas.
the Ideas List
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The core team can access the source files for this site by
Any commit to this area will be reflected in the web pages at the next
(daily) update. The current version can be seen at
http://svn.r-project.org/R-dev-web/trunk/index.html.
Texts to use when entering R into software
archives such as freshmeat:
short
long
R page at gnu.org
Release statement for 1.0.0
Release management details:
Release procedures and checklist
Script for building R releases
Script for building prereleases
(alpha/beta/RC)
Script for setting and committing the
VERSION file