R言語

CHANGES IN R 4.4.2
C-LEVEL FACILITIES
The S-compatibility macros F77_COM and
F77_COMDECL defined in header ‘R_ext/RS.h’ are
deprecated and will be removed shortly. We could find no record
of their use.
BUG FIXES
Mathlib function lgammacor(x) no longer warns about
underflow to zero for large x.
Text widths and heights were incorrectly reported by the
Quartz device if the drawing context didn't exist yet (typically
when drawing off-screen to a window that is yet to appear, see
PR#18591).
The Quartz device could segfault in cases where paths with
spaces are used in the new glyph drawing API.
Thanks to Tomek Gieorgijewski (PR#18758).
On macOS in R CRAN builds, it is again possible to read
little-endian UTF-16 text with a BOM from a connection using
encoding="UTF-16". Users building R from source should avoid
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CHANGES IN R 4.4.1
C-LEVEL FACILITIES
Functions R_atof and R_strtod declared in
header ‘R_ext/Utils.h’ are now documented in
‘Writing R Extensions’ and so formally part of the API.
The non-API entry points Rf_setSVector,
Rf_StringFalse, Rf_StringTrue and
Rf_isBlankString have been added to those reported by
R CMD check.
The new function Rf_allocLang is now available. This
provides an alternative to the idiom of calling
Rf_allocList followed by SET_TYPEOF.
UTILITIES
R CMD check now reports as warnings what
gfortran calls ‘Fortran 2018 deleted features’, all
of which have long been marked as ‘obsolescent’ and some of
which were deleted in Fortran 2008 or earlier. Fortran compilers
are no longer required to support these.
BUG FIXES
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CHANGES IN R 4.4.0
SIGNIFICANT USER-VISIBLE CHANGES
Startup banners, R --version, sessionInfo()
and R CMD check no longer report (64-bit) as part of
the platform as this is almost universal – the increasingly rare
32-bit platforms will still report (32-bit).
On Windows, ditto for window titles.
is.atomic(NULL) now returns FALSE, as NULL
is not an atomic vector. Strict back-compatibility would
replace is.atomic(foo) by (is.null(foo) || is.atomic(foo))
but should happen only sparingly.
NEW FEATURES
The confint() methods for "glm" and
"nls" objects have been copied to the stats
package. Previously, they were stubs which called versions in
package MASS. The MASS namespace is no longer loaded
if you invoke (say) confint(glmfit). Further, the
"glm" method for profile() and the plot()
and pairs() methods for class "profile" have been
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CHANGES IN R 4.3.3
NEW FEATURES
iconv() now fixes up variant encoding names such as
"utf8" case-insensitively.
DEPRECATED AND DEFUNCT
The legacy encoding = "MacRoman" is deprecated in
pdf() and postscript(): support was incomplete in
earlier versions of R.
BUG FIXES
Arguments are now properly forwarded to methods on S4 generics
with ... in the middle of their formal arguments. This was
broken for the case when a method introduced an argument but did
not include ... in its own formals. Thanks to Herv辿 Pag竪s for
the report PR#18538.
Some invalid file arguments to pictex(),
postscript() and xfig() opened a file called
‘⁠NA⁠’ rather than throw an error. These included
postscript(NULL) (which some people expected to work like
pdf(NULL)).
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CHANGES IN R 4.3.2
NEW FEATURES
The default initialization of the "repos" option
from the ‘repositories’ file at startup can be skipped by
setting environment variable R_REPOSITORIES to NULL
such that getOption("repos") is empty if not set elsewhere.
qr.X() is now an implicit S4 generic in methods.
iconv(to = "ASCII//TRANSLIT") is emulated using
substitution on platforms which do not support it (notably Alpine
Linux). This should give a human-readable conversion in ASCII on
all platforms (rather than NA_character_).
trans3d() gains options continuous and
verbose addressing the problem of possible “wrap
around” when projecting too long curves, as reported by Achim Zeileis
in PR#18537.
tools::showNonASCII() has been rewritten to work
better on macOS 14 (which has a changed implementation of
iconv()).
tiff(type = "quartz") (the default on macOS) now warns
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CHANGES IN R 4.3.1
C-LEVEL FACILITIES
The C-level API version of R's integrate(),
Rdqags() in ‘Applic.h’, now returns the correct number of
integrand evaluations neval, fixing PR#18515 reported and
diagnosed by Stephen Wade.
The C prototypes for LAPACK calls dspgv and dtptrs
in ‘R_exts/Lapack.h’ had one too many and one too few
character length arguments — but this has not caused any known
issues. To get the corrected prototypes, include
#include <Rconfig.h> // for PR18534fixed
#ifdef PR18534fixed
# define usePR18534fix 1
#endif
#include <R_exts/Lapack.h>
in your C/C++ code (PR#18534).
INSTALLATION
Many of the checks of esoteric Internet operations and those
using unreliable external sites have been moved to a new target
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CHANGES IN R 4.3.0
SIGNIFICANT USER-VISIBLE CHANGES
Calling && or || with LHS or (if evaluated) RHS of
length greater than one is now always an error, with a report of
the form
'length = 4' in coercion to 'logical(1)'
Environment variable _R_CHECK_LENGTH_1_LOGIC2_ no longer has
any effect.
NEW FEATURES
The included BLAS sources have been updated to those shipped
with LAPACK version 3.10.1. (This caused some platform-dependent
changes to package check output.) And then to the sources from
LAPACK version 3.11.0 (with changes only to double complex
subroutines).
The included LAPACK sources have been updated to include the
four Fortran 90 routines rather than their Fortran 77
predecessors. This may give some different signs in SVDs or
eigendecompositions.. (This completes the transition to LAPACK
3.10.x begun in R 4.2.0.)
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CHANGES IN R 4.2.3
C-LEVEL FACILITIES
The definition of DL_FUNC in ‘R_ext/Rdynload.h’
has been changed to be fully C-compliant. This means that
functions loaded via for example R_GetCCallable need
to be cast to an appropriate type if they have any arguments.
.Machine has a new element sizeof.time_t to
identify old systems with a 32-bit type and hence a limited range
of date-times (and limited support for dates millions of years
from present).
PACKAGE INSTALLATION
(Windows) The default C++ standard had accidentally been
left at C++11 when it was changed to C++14 on Unix.
BUG FIXES
As "POSIXlt" objects may be “partially filled”
and their list components meant to be recycled, length() now
is the length of the longest component.
as.POSIXlt.Date() could underflow for dates in the
far past (more than half a million years BCE).
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CHANGES IN R 4.2.2
NEW FEATURES
tools::Rdiff(useDiff = TRUE) checks for the presence
of an external diff command and switches to
useDiff = FALSE if none is found.
This allows R CMD Rdiff to always work.
On Windows, environment variable
R_LIBCURL_SSL_REVOKE_BEST_EFFORT can be used to switch to
only ‘best-effort’ SSL certificate revocation checks with
the default "libcurl" download method. This reduces
security, but may be needed for downloads to work with MITM
proxies (PR#18379).
(macOS) The run-time check for libraries from XQuartz for
X11 and Tcl/Tk no longer uses otool from the Apple
Developer Tools (PR#18400).
The LaTeX style for producing the PDF manuals, ‘Rd.sty’,
now loads the standard ‘⁠amsmath⁠’, ‘⁠amsfonts⁠’ and
‘⁠amssymb⁠’ packages for greater coverage of math commands in
the Rd ⁠\eqn⁠ and ⁠\deqn⁠ macros.
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CHANGES IN R 4.2.1
NEW FEATURES
New function utils::findCRANmirror() to find out if a
CRAN mirror has been selected, otherwise fallback to
the main site. This behaves in the same way as
tools::CRAN_package_db() and is intended for packages
wishing to access CRAN for purposes other than
installing packages.
The need for this was shown by a day when the main CRAN
website was offline and a dozen or so packages which had its URL
hardcoded failed their checks.
INSTALLATION on a UNIX-ALIKE
The libraries searched for by --with-blas (without
a value) now include BLIS (after OpenBLAS but before ATLAS). And
on macOS, the Accelerate framework (after ATLAS). (This is
patterned after the AX_BLAS macro from the Autoconf Archive.)
The included LAPACK sources have been updated to 3.10.1.
UTILITIES
The (full path to) the command tidy to be used for
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CHANGES IN R 4.2.0
SIGNIFICANT USER-VISIBLE CHANGES
The formula method of aggregate() now matches
the generic in naming its first argument x (resolving
PR#18299 by Thomas Soeiro).
This means that calling aggregate() with a formula as a
named first argument requires name formula in earlier
versions of R and name x now, so portable code should not
name the argument (code in many packages did).
Calling && or || with either argument of
length greater than one now gives a warning (which it is intended
will become an error).
Calling if() or while() with a condition of
length greater than one gives an error rather than a warning.
Consequently, environment variable
_R_CHECK_LENGTH_1_CONDITION_ no longer has any effect.
Windows users should consult the WINDOWS section below for
some profound changes including
Support for 32-bit builds has been dropped.
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