The build system rolled up R-4.6.0.tar.gz and .xz (codename "Because it was
There") this morning.
The choice of codename is in remembrance of R Core member Tom?? Kalibera
(1978-2026). Among many other things, he was a keen mountain climber.
This is a major release with a number of new features, API changes, and bug
fixes.
The list below details the changes in this release.
You can get the source code from
https://cran.r-project.org/src/base/R-4/R-4.6.0.tar.gz
https://cran.r-project.org/src/base/R-4/R-4.6.0.tar.xz
or wait for it to be mirrored at a CRAN site nearer to you.
Binaries for various platforms will appear in due course.
For the R Core Team,
Peter Dalgaard
These are the checksums (md5 and SHA-256) for the freshly created files, in case
you wish
to check that they are uncorrupted:
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This is the relevant part of the NEWS file
Changes in R 4.6.0:
Significant User-Visible Changes:
? The R citation now provides a DOI (10.32614/R.manuals): please
update your bibliographies accordingly.
? The default C++ standard has been changed to C++20 where
available (which it is on all known platforms from 2021 on): if
not C++17 is used if available otherwise C++ is not supported (as
before).
(GCC 16 has also switched to C++20 as its default.)
Packages can request C++17 if essential.
? The Sweave driver Rtangle no longer puts empty lines at the end
of tangled scripts.
New Features:
? The default AIC and BIC methods now check whether the methods
namespace is loaded rather than stats4. They still use
stats4::logLik (and stats4::nobs), but packages no longer need to
load stats4 explicitly.
? confint.default() now also works on S4 objects, as long as
suitable coef() and vcov() methods exist.
? binomial(identity) and quasibinomial(identity) now work without
having to quote the argument.
? str() now shows more via format() for external pointers.
? terms(<formula>, specials = *) now treats non-syntactic specials
more gracefully, thanks to Mikael Jagan's PR#18568.
? help.start() gets a lib.loc option and its default for
make.packages.html() is enhanced to allow, e.g., fast access to
.Library when that contains only base and recommended packages.
? In *.Rd help files, the \linkS4class macro now also works for
links to other packages via \linkS4class[<pkg>]{<myClass>},
much
nicer than the ?workaround?
\link[<pkg>:<myClass>-class]{<myClass>} necessary in
earlier
versions of R.
Packages with the new syntax need to formally depend on R > 4.6.0.
? tools::analyze_license() now also computes SPDX license
identifiers, thanks to Thierry Onkelinx and LLu?s Revilla.
? read.dcf() now recognizes lines starting with # as comment lines.
By Dirk Eddelbuettel, Laurent Gatto and Hugo Gruson.
? tcltk::tclVersion() now only optionally includes the ?patch
level?, as Tcl full versions can be of the form 8.7a5 or 9.0b1
without three clear components.
? untar(tar = "internal") supports extras = "-P" to use
unchanged
the recorded file paths (as many external tar programs do).
? extSoftVersion()[["zstd"]] now reports the version of the zstd
compression library if available, thanks to Trevor Davis' patch
proposal in PR#18914.
? New logical option() quiet, defaulting to false, set to TRUE by
R's command-line option --quiet (and similar), now can be
switched during an R session. Prompted by Dirk Eddelbuettel's
proposal in PR#18913.
? Credentials for basic HTTP authentication with download method
"libcurl" can now be provided in a netrc file. The path to the
file can be specified in options("netrc").
? tools::deparseLatex() gains a math argument, now used by the
default bibstyle to format bibentry() fields with $...$ syntax
via Rd \eqn markup.
? gzcon() can now decompress a concatenation of compressed streams
PR#18887.
? Bibliographic citations and references in Rd files can now be
auto-generated from bibentries in bibliographic databases in R or
BibTeX formats. See
RShowDoc("R-exts#Bibliographic-citations-and-references") for
more information.
? Arguments to loadNamespace() which will be ignored because the
namespace is already loaded are now noted.
? chkDots()' optional argument allowed has been implemented thanks
to Trevor Davis' proposal in PR#18936.
? New function messageCondition() to create structured "message"
objects analogous to warningCondition() and errorCondition()
(PR#18940, by Trevor Davis).
? wilcox.test() can now perform exact (conditional) inference in
case of ties. Based on contributions by Torsten Hothorn.
? wilcox.test() can now optionally compute improved asymptotic
p-values by including up to 3 correction terms of the Edgeworth
series for the normal approximation.
? barplot(.., orderH = *) for stacked bar plots allows to sort the
stacks each according to size.
? New argument panel.first for hist() (via plot.histogram()),
barplot(), bxp(), and hence implicitly boxplot(). All except the
former also gain a new panel.last. Suggested by Marieke Stolte
and Julian Welz.
? plot.default() gets a new switch lim2 to indicate that the
default xlim and ylim range computations only use _jointly_
finite x- and y-values; indirectly suggested in PR#7986 by Jincai
Jiang.
? Rman.css, the stylesheet for the texi2any-generated HTML versions
of the R manuals, was improved following joint efforts at the ?R
Dev Days? of useR! 2024 and RSECon25.
? New system Rd macro \manual{<name>}{<node>} to refer to a
specific section _etc_ (possibly empty, for Top) of one of the R
manuals (e.g., R-exts).
? list.files() now has optional argument fixed to allow literal
pattern matching. Suggested and implemented by Duncan Murdoch in
PR#18925.
? substring(txt, i1, i2), substr(..) and their replacement versions
now accept i2 = NULL to mean ?to the end_of_string?, thus
fulfilling Kevin Ushey (and others') suggestions in PR#18851.
? The default method for pretty() gets a new switch bounds for
completeness, corresponding to .pretty(). Also, it now catches
typos such as eps.corrected = 2, noted in PR#18521 by Mikko
Korpela.
? Plain-text help now renders Rd \describe lists using line breaks
after item labels. Set tools::Rd2txt_options(descStyle=NULL) to
get the old behaviour with a simple space; a "colon" variant is
also available.
? x %notin% table newly in base is an idiom for !(x %in% table) and
provided almost entirely for convenience and code readability,
from an R-devel suggestion, after many years of private
definitions mostly hidden in packages, including in R's tools
package.
? The default method of sequence() gets a new option recycle to
swap between current (not fully recycling) and future behaviour
where all three of (nvec, from, by) are jointly recycled.
? ftable()s default method and the as.table() method for "ftable"s
get a perm argument with back compatible default. The as.table()
method also gets a named.dim = FALSE switch, no longer creating a
named dim(<result>) by default.
? match.arg() gets a new option several.ok = "all", fulfilling the
wish of Jim Hester in PR#16659.
? provideDimnames() gets new switch use.names, as proposed
including patch by Mikael Jagan, in PR#18975.
? The default summary() is more informative for character vectors,
optionally resorting to the factor method via the new argument
character.method = "factor", e.g., when summarizing a data frame
(PR#16750).
It also provides more useful summaries for complex vectors, with
polar determining if polar or cartesian coordinates are more
relevant; mostly based on a proposal by Mikael Jagan.
? Error messages from failed Rd \Sexpr code now include the call
from the original condition (if available). Warning messages now
include Rd source locations.
? When the environment variable R_WARN_BOUNDS_OPT is set to "yes",
options(warn = val) will check if val is inside -1:2; this may
happen unconditionally in the future.
? weighted.residuals() now returns weighted working residuals for
"glm" objects. It used to return deviance residuals, but these
do
not give the one-step approximated dfbeta values, as pointed out
by Ravi Varadhan. influence.glm() has been amended so that it now
returns an object with both a "wt.res" and a "dev.res"
element.
? Several influence measures for "glm" objects have been updated
to
use Pearson residuals rather than deviance residuals (the latter
are not unbiased) and to not use leave-one-out estimates of
dispersion in models with fixed dispersion. Thanks to Ravi
Varadhan for discussions and testing of these updates.
? R now supports custom binary types which are of the form
"<system>.binary.<build>" where <system> is
lower-case name
(letters only) of the system and <build> is the name of the build
(alphanumeric and dashes). The corresponding paths returned by
contrib.url (which govern the repository layout) with the above
type= have the form bin/<system>/<build>/contrib/<x.y>
where
<x.y> is the R version without patch level. This is a
generalisation of the binary types previously supported on macOS.
In addition, binary packages can have the extensions .tar.bz2,
.tar.xz, .tar.zst and .tar.zstd with the corresponding
compression support.
? The value of .Platform$pkgType which defines the native binary
type for the current build of R can be overridden with
R_PLATFORM_PKGTYPE environment variable (previously this was only
set by the macOS builds of R). This should be typically only done
by the author of a binary R distribution to define the type of
binaries supported by that build of R.
? If R uses custom binary type in its .Platform$pkgType then R CMD
INSTALL --build will produce
<package>_<ver>_R_<system>-<build>.tar.xz binary
files. Please
note that future versions may use .zstd compression by default so
package tooling should support any of the above mentioned
extensions.
? New facilities have been introduced for package integrity
verification and package signing. The optional file SHA256 in a
package contains SHA-256 hashes, lengths and paths of files
provided in the package allowing for more reliable integrity
verification (relative to MD5). This file is now generated by
default in R CMD INSTALL --build and optionally via R CMD build
--sha256. A package can be signed by creating a detached GnuPG
signature file SHA256.sig signing the entirety of the SHA256
file. Upon installation, the signature is verified using GnuPG,
thus ensuring the integrity of the SHA256 file and by induction
all files in the package. Both source and binary packages can be
signed. Currently, this only applies to tar-based packages, and
the command-line GnuPG gpg tool (or equivalent tool named in the
GPG environment variable) has to be available for signing and
verification to work. R CMD INSTALL --sign can be used to sign
binary packages, including its use with --build. System-wide
GnuPG keyrings for the R installation can be placed in
<R_HOME>/etc/keyrings as files with .gpg extensions and will be
checked first before consulting user's GnuPG keyring (if
present).
? Experimentally, several math library (math.h) functions, such as
exp(.), log1p(), sin(), atanh(), when called from R, are now
ensured to give fully accurate results in a small neighbourhood
of special values, such as exp(0) == 1, log1p(0) == 0, etc. This
makes R slightly less platform dependent for these functions,
notably on platforms with less accurate system math libraries,
see also
<https://blog.r-project.org/2026/01/30/debugging-sensitivity-to-c-math-library-on-linux/>.
? Function free1way() implementing semiparametrically efficient
inference procedures (likelihood- and permutation-based) in
distribution-free stratified K-sample one-way layouts was added
to the stats package. Approximate (via power.free1way.test())
and simulation-based (utilising rfree1way() for random number
generation) power-assessment and sample-size planning as well as
model diagnostics (available from a plot method and
probability-probability plots in ppplot()) complement the
functionality. Provided by Torsten Hothorn.
? plot.data.frame() now supports a formula argument.
? New Rd macro \linkS4methods{}, e.g., for easier linking to method
docs in other packages, proposed and coded by Mikael Jagan in
PR#18998.
? Class "difftime" is now also among the S4
"OldClasses".
? New function bitstring() as a user-friendly wrapper around
intToBits(), etc.
? plot.lm() now omits the smoother in the residuals vs leverage
plot. This never made much sense, but if you really want it, you
can force the old behaviour by setting panel.raw=panel.smooth.
? hatvalues() now has a method for nls (nonlinear model) results,
prompted by the proposal of Patrice Kiener and Heather Turner in
PR#18897.
? The Sweave driver RweaveLatex now allows the value of logical and
numerical chunk options (only) to be the name of an object
defined in earlier, evaluated code chunks. This is useful to pass
computed values to options. For options set this way for weaving
purposes, the Rtangle driver rather uses their default values,
with a warning. By Vincent Goulet.
? The Sweave driver RweaveLatex gains an option to include
unparsable R code or arbitrary text in code chunks. Chunks marked
as ignore.on.weave = TRUE are completely ignored on weaving,
i.e., not even parsed. The chunks however remain written out
verbatim on tangling.
Similarly, the driver Rtangle gains an option to control the
extraction of code chunks. Chunks marked as ignore.on.tangle=TRUE
are processed as usual on weaving, but left out of the tangled
scripts (or thrown away when split=TRUE).
The drivers also support the shorter aliases weave for
!ignore.on.weave, and tangle for !ignore.on.tangle. A further
option ignore, available for both drivers, sets ignore.on.weave
and ignore.on.tangle at once.
By Vincent Goulet.
? The Sweave driver Rtangle now provides an option chunk.sep to
control the separator between code chunks in tangled scripts
(with an unchanged default of \n\n). Using check.sep=FALSE omits
the separator (between two chunks when used as a chunk option).
By Vincent Goulet.
? The Sweave driver Rtangle now provides an option extension to
specify the extension, without the leading dot, for the file name
of a tangled code chunk when splitting is selected (the option
has no effect with split=FALSE). If TRUE, the default extension
of Rtangle (usually .R) is used; if FALSE, no extension is added
to the file name. By Vincent Goulet.
? New function SweaveGetSourceName in package utils to obtain the
name of the file being woven by an Sweave process launched from
the command line. By Vincent Goulet.
Graphics:
? The graphics engine version, R_GE_version, has been bumped to 17
and so packages that provide graphics devices should be
reinstalled.
The glyphFont() function gains a variations argument, which
allows variable font axes to be specified, e.g., c(wght = 100).
Only the quartz() device and Cairo-based graphics devices (but
not cairo_pdf()) support variable font axes so far.
Installation on a Unix-Alike:
? configure appends bsdtar to the list of command names it tries
when finding a default for TAR.
? Failures in building the documentation for the base packages,
including from parsing their Rd files, are no longer ignored by
make docs.
? Building the R manuals now requires Texinfo 6.8 or later.
? A new LIBR_LDFLAGS defaulting to LDFLAGS allows more flexibility,
e.g., for distributions such as Gentoo, Debian or Ubuntu, fixing
PR#18992; additionally a make failure to create libR.pc should no
longer be ignored, fixing PR#18993; both thanks to Benjamin
Drung.
Checking an Installation:
? There is a new directory tests/C++Standards which contains small
packages which can be test-installed to check support for various
C++ standards. This is principally for use on Windows as on a
Unix-alike this partially duplicates tests done by configure -
although it can also be used to test the behaviour of R CMD
INSTALL on unsupported standards.
Package Installation:
? Specifying C++11 or C++14 in src/Makevars has long given a note:
in 99% of CRAN packages the specification was unnecessary as the
default C++17 sufficed (in a few cases with a deprecation warning
from some compilers).
Support for these standards has been removed: the default C++
standard will be used.
R CMD config variables CXX11, CXX14 and their associated
CXXxxFLAGS, CXXxxPICFLAGS CXXxxSTD, SHLIBCXXxxLD and
SHLIBCXXxxLDFLAGS variables are no longer supported and reported
as ?defunct?.
? When installing binary packages the time stamp in the "Built"
field is considered even if the package version is identical to
allow binary package repositories to update binaries without the
need to increase the package version.
? The "Built" column returned by installed.packages() and
old.packages() now contains the full value of the "Built" entry
from the (installed) DESCRIPTION file. Previously, only the R
version from the "Built" entry was returned.
? If the timestamp passed as --built-timestamp to R CMD INSTALL is
in RFC-2822 form (with time-zone offset) it will be converted to
ISO UTC form to conform to the format used by R for purposes
described above. (PR#19037, thanks to Dirk Eddelbuettel)
C-Level Facilities:
? New functions GEcreateDD() and GEfreeDD() for allocating (and
initialising) DevDesc structures. Can be used by external
graphics devices. Satisfies PR#18292.
? New function R_eval_with_gd() designed to ?lock? a graphics
device during call to eval() within device drawing routines.
External _on-screen_ graphics devices should consider using this
function to avoid crashes from the device being closed by the
user (e.g., a mouse click) during drawing.
? Declarations for non-API functions LOGICAL0, INTEGER0, REAL0,
COMPLEX0, and RAW0 have been removed from installed header files.
? Non-API entry points Rf_acopy_string and Rf_lazy_duplicate have
been added to those reported by R CMD check.
? Packages using the non-API functions ATTRIB and SET_ATTRIB will
now receive check NOTEs. See ?Writing R Extensions? for
alternatives to use.
? R CMD check NOTEs on the use of these non-API entry points have
been upgraded to WARNINGs in preparation for removing
declarations and, where possible, hiding these entry points:
R_nchar, R_tryWrap, Rf_GetOption, R_lsInternal, BODY, FORMALS,
CLOENV, SET_TYPEOF, STRING_PTR, R_duplicate_attr, getConnection,
R_data_class, STRING_PTR, SET_OBJECT, ATTRIB, SET_ATTRIB,
Rf_findVarInFrame3.
? The deprecated macros CHARACTER_DATA and CHARACTER_POINTER now
return const pointers since using writable pointers in packages
is not safe.
? New function DATAPTR_RW() for use in implementing ALTREP Dataptr
methods. This function should not be used in any other contexts.
? New function R_class() as the C equivalent of class() in R.
? New function Rf_isScalarString.
? The R_ObjectTable type definitions formerly in R_ext/Callbacks.h
are now available in the new header file R_ext/ObjectTable.h.
This new header file should be used in packages instead of
R_ext/Callbacks.h.
? Task callback support declared in R_ext/Callbacks.h has been
enabled again. It was disabled for R 4.5.0.
? The non-API header file R_ext/PrtUtil.h is no longer copied to
the installed include directory.
? New function R_mapAttrib for iterating over the attributes of an
object.
? New functions R_altrep_class_name and R_altrep_class_package for
retrieving the class name symbol and package name symbol of an
ALTREP object. These should be used instead of ALTREP_CLASS.
? New function R_getAttributes returns the same result as the R
function attributes. New functions R_getAttribCount,
R_getAttribNames, R_hasAttrib, R_nrow, and R_ncol.
? The function Rf_isFrame has been removed; use Rf_isDataFrame
instead.
? The function VECTOR_PTR has been removed.
The non-API function DATAPTR is no longer declared in an
installed header file.
? These entry points are now marked as hidden and no longer have
declarations in installed header files: ENVFLAGS, EXTPTR_PROT,
FRAME, ENCLOS, EXTPTR_PTR, EXTPTR_TAG, HASHTAB, IS_S4_OBJECT,
LEVELS, NAMED, OBJECT, R_shallow_duplicate_attr,
Rf_isValidString, Rf_lazy_duplicate, Rf_NonNullStringMatch,
SETLENGTH, SETLEVELS, SET_BODY, SET_CLOENV, SET_ENCLOS,
SET_FORMALS, SET_ENVFLAGS, SET_FRAME, SET_GROWABLE_BIT,
SET_HASHTAB, SET_NAMED, SET_S4_OBJECT, SET_TRUELENGTH,
STDVEC_DATAPTR, TRUELENGTH, UNSET_S4_OBJECT, XTRUELENGTH.
? New experimental API for working with variable bindings in
environments. The function R_GetBindingType identifies the
binding type without forcing a delayed or active binding. New
bindings care created by R_MakeDelayedBinding,
R_MakeForcedBinding and R_MakeMissingBinding. Delayed and forced
bindings can be inspected with R_ForcedBindingExpression,
R_DelayedBindingExpression, and R_DelayedBindingEnvironment.
Bindings for ... in function call environments can be examined
with R_findDotsEnv, R_DotsExist, R_DotsLength, R_DotsNames,
R_DotsElt, R_GetDotType, R_DotDelayedExpression,
R_DotDelayedEnvironment, and R_DotForcedExpression. Contributed
by Lionel Henry, Davis Vaughan, and Charlie Gao in PR#18928.
? New function R_envSymbols returns a vector of the symbols for
which an environment contains bindings (PR#18928).
? R CMD check NOTEs on the use of the non-API entry points PRCODE,
SET_PRCODE, PRENV, SET_PRENV, PRVALUE, SET_PRVALUE,
R_PromiseExpr, and Rf_allocSExp have been upgraded to WARNINGs in
preparation for removing declarations and, where possible, hiding
these entry points.
? New functions R_getVar and R_getVarEx. In most cases these can be
used instead of the non-API functions Rf_findVar and
Rf_findVarInFrame. Other cases can be handled by the new API for
working with variable bindings.
? Packages using any non-API variables will now receive check
NOTEs.
? New function R_getRegisteredNamespace finds and returns the
namespace environment registered for a name, or R_NilValue if
none is found.
Utilities:
? R CMD check now reports further clang warnings including
-Wkeyword-macro. This is most commonly seen for the C23 keywords
bool, true and false, but is also seen for nullptr (C23 and
C++11). Masking these by macros _may_ generate correct code (but
not always) and always results in confusing-to-read code.
? The cascaded stylesheet R.css now adds less vertical white space
when rendering Rd files' \itemize, \enumerate, and \describe list
\items to HTML.
Where R is used via extensive IDEs such as RStudio, their
maintainers may need to adapt R.css files accordingly.
? R CMD check when passed a tarball looks at its contents and so no
longer derives the package name from the tarball name (which can
now be arbitrary).
? Package README.md files are now installed and featured in HTML
help.
? package.skeleton() now invisibly returns the path of the created
directory, similar to prompt() et al., and allows creating blank
skeletons without any R objects.
Deprecated and Defunct:
? structure(NULL, <name> = <val>) is now defunct.
? Three tk*.slaves() functions were deprecated in favor of
tk*.child() which do need Tcl/Tk version 8.6 or higher.
Bug Fixes:
? chol(x, pivot=TRUE) now zeroes the trailing submatrix when the
algorithm stops early. Following the help page instructions on
how to reconstruct the matrix in positive semidefinite cases gave
incorrect results if the rank was 2 or more less than the
dimension (PR#15853).
? Profiling "mle" objects (stats4 package) could fail because
profile MLE used starting value from full MLE. Now starts from
profile MLE from previous step.
? Setting attributes on primitive functions is now an error;
previously it modified without copying (as noticed by Henrik
Bengtsson on the R-devel mailing list).
Relatedly, changing the environment() of a primitive function
does no longer happen and gives a warning (to become an error,
later).
? Dataset LifeCycleSavings had a misspelled row name: "Guatamala"
was corrected to "Guatemala".
? The Pair(x,y) construction in the formula interface to paired
tests did not work with the subset argument, due to the absence
of a [.Pair method, which has now been added.
? Subsetting "table" objects keeps S3 classes more consistently,
fixing PR#18845.
? When browser() is active or when otherwise debugging, R code such
as if(TRUE) now longer triggers a new browser level, fixing
PR#18885 (differently than the fix for PR#15770), with thanks to
Ivan Krylov.
? text() now truncates labels to maximum length of x and y (if it
is longer), fixing PR#7084. Thanks to Heather Turner, Ella Kaye,
and Philippe Grosjean.
? <Date> %in% set is again as fast as it was before R 4.3.0, _via_
a new S3 method mtfrm.Date.
<character> %in% <Date> and vice versa are now documented to
work
in concordance with == and as an exception to the typical match()
behaviour which relies on ?univariate? mtfrm() alone.
? It is now possible to convert _to_ "snpc" units via, e.g.,
grid::convertWidth(), fixing PR#18915. Thanks to Trevor Davis.
? The precip dataset had typos in the names "Bismarck" and
"Pittsburgh" (PR#18895).
? tools::checkReplaceFuns() now deals better with replacement
methods _not_ available as regular functions in the namespace.
? length(xpr) <- n now also works for expression vectors, the same
as for lists, i.e., padding with NULL entries if the length is
increased. Thanks to Mikael Jagan's PR#18917.
? <complex>[i] <- NA now only sets the _real_ part to NA,
consistently with the as.complex(NA) behaviour since R 4.4.0;
thanks to Mikael Jagan's PR#18918.
? format(<list>) calling format.default() now calls generic
format() on each list element (rather than format.default()).
? tools::Rd2HTML() detects paragraphs in more cases of
\Sexpr-generated Rd code, fixing a regression in R 3.6.0
originally reported by Georgi Boshnakov and later also in
PR#18470. An inactive #ifdef block no longer breaks the
paragraph.
? Parsing a multi-line string from Rd \Sexpr code no longer doubles
the newlines.
? requireNamespace(.., versionCheck = *) now shows an error and
returns FALSE when the package version check is not fulfilled,
thanks to Iris Simmons and Trevor Davis's PR#18255.
Additionally, the versionCheck argument is checked and when
invalid, an error is signalled to avoid subsequent confusing
error messages.
? requireNamespace() now throws an error even if the name space is
already loaded if it is called with an unmatched argument such as
quitely = TRUE or quiet = TRUE (argument quietly cannot be
abbreviated as it follows ...).
? rep() signals more specific error messages, notably when using
both times and each optional arguments. Fixes PR#18926, thanks
to Ella Kaye and collaborators at useR! 2025's ?R Dev Day?.
? jitter(x, amount, factor) becomes more robust for non-finite x or
also negative amount, factor. help(jitter) is easier to read,
fixing PR#17279, thanks to its contributors.
? Plain-text help (Rd2txt) lacked markup for \cited titles, which
are now wrapped in single quotes.
? Default column labels are now correctly aligned when printing a
matrix with right alignment (PR#18943, thanks to Mikael Jagan).
? poly(fct, n) signals an error again, for a non-ordered factor
fct, thanks to Roland Fuss' notice on R-devel.
? terms(<formula>, simplify=TRUE) now works correctly also in the
cases where the formula has more than one term with NAs such as
f(u, b=NA) or g(NA), finally fixing PR#15275 thanks to Mikael
Jagan's patch.
? The help page example(matplot) now correctly labels Sepal vs
Petal dimensions in its first iris data plot, thanks to Jeff
Dick's post on R-devel.
? diff(m, lag, dif) for matrix m now still returns matrices, also
when lag * dif > nrow(m) (PR#18972, thanks to Mikael Jagan and
Suharto Anggono). diff(<ts-matrix>) remains matrix, even when it
has length zero.
? Values returned by active binding functions are now marked as not
mutable to prevent unintended mutation in complex assignment
operations.
? The default method of sequence() now allows to fully recycle all
three of (nvec, from, by) as always documented; with thanks to
Mikael Jagan's report and patch in PR#18304. Its behaviour
remains back compatible for now, but can be switched to future
behaviour via environment variable R_sequence_recycle, or
explicit recycle = TRUE.
? Subassignment, x[ind] <- val, to 1-dimensional arrays no longer
?drops? them to simple vectors when ind is a name, fixing
PR#18973, reported by Thomas Soeiro.
? The implicitGeneric definition for toeplitz() produced a default
method that failed when toeplitz(x, r) was called with more than
the first argument. Simple fix from Mikael Jagan.
? The error message for array(dim = c()) now uses "'dim'",
thanks
to Hugo Gruson.
? Some legal but strange nested complex assignments are handled a
bit more robustly in interpreted code.
? cacheMetaData() does not to mangle primitive generics.
? The S4 method norm(<ANY>, type = <missing>) for the implicit
generic norm() now uses type = "O" as has been the intention for
more than ten years, fixing PR#18979 thanks to Mikael Jagan.
? On Windows terminals Ctrl-C now breaks out of waiting for
keyboard input, fixing PR#18982.
? The default summary() and its factor method now label missing
values NAs rather than NA's, fixing a decades-old grammatical
faux pas inherited from S (PR#16348 and PR#18948).
? Asymmetric toeplitz(x, r) is type consistent now, even when r of
length 0 or 1 is not used directly. Fixes PR#18996, thanks to
Mikael Jagan's patch and test.
? format(r) now keeps names(r) also for raw objects r.
? rep.int() and rep_len() again drop names also for factors, fixing
a regression in R 4.0.0. (Thanks to a report by Rui Barradas and
PR#18999 by Suharto Anggono.)
? str(x) with a list-like x of a class having an str() S3 method
using NextMethod(), now no longer outputs "List of <...>"
in the
default method, thanks to Ian Farm's report and fix proposal in
PR#19001.
? as.POSIXlt(ch), as.Date(ch) etc now also work correctly when ch
contains "Inf", via strptime(.), fixing PR#19006.
? c(<POSIXlt>, ..) now fully preserves sub-second accuracy,
fulfilling a part of Suharto Anggono's wishlist PR#18989.
? When subassigning "POSIXlt", e.g., <dat>[i] <- v, v is
now
converted to the time zone of dat, before being assigned, see
PR#18919.
? The "tzcode" attribute of "POSIXlt" objects should no
longer
depend on earlier calls, fixing PR#19005 thanks to Ivan Krylov, a
patch by Suharto Anggono and reports of ?Non-deterministic
POSIXlt tzone in Europe/London ..? on R-devel.
? In intervals with very low density cdplot() was unreliable,
returning probabilities that are greater than one or NaN
(PR#19011). Fix from Christoph Dalitz and Achim Zeileis.
? R CMD build now installs packages providing their own vignette
engine (PR#18191). Patch by Paul Smith.
? ar.burg(), ar.yw() and ar.ols() deal better with non finite AIC
values thanks to Simone Giannerini's remarks on R-devel.
? Parsing deeply nested expressions no longer should segfault in
certain circumstances, fixing five different checks on context
stack size, thanks to Kevin Ushey's report and Michael Chirico's
patch in PR#18994.
? The internal cwilcox function used in computations for the
Wilcoxon distribution is now based on an implementation of a
formula by Andreas L?ffler provided by Andreas L?ffler, Aidan
Lakshman, and Ivan Krylov, substantially reducing the memory
complexity of the original implementation (PR#18655).
? When Ops group methods for matrix-"ts" return a zero-extent
matrix, its type is correct now. E.g., <int> + <dbl> now
returns
type "double", see also PR#18972.
? intToUtf8(<negative>) now returns NA and no longer accesses
invalid memory, thanks to Kevin Ushey's report with patch in
PR#19052.
? When file.choose() is terminated with an EOF, it now signals an
error rather than returning garbage, thanks to Kevin Ushey's
report and patch in PR#19053,
--
Peter Dalgaard, Professor,
Center for Statistics, Copenhagen Business School
Solbjerg Plads 3, 2000 Frederiksberg, Denmark
Phone: (+45)38153501
Office: A 4.23
Email: pd.mes at cbs.dk Priv: PDalgd at gmail.com