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最新版本 R for Windows 4.1.0

R for Windows 4.1.0

R for Windows 4.1.0
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軟體資訊
檔案版本 R for Windows 4.1.0

檔案名稱 R-4.1.0-win.exe
檔案大小
系統 Windows 7 64 / Windows 8 64 / Windows 10 64
軟體類型 開源軟體
作者 Brave Software Inc.
官網 https://www.brave.com
更新日期 2021-05-26
更新日誌

What's new in this version:

Future directions:
- It is planned that the 4.1.x series will be the last to support 32-bit Windows, with production of binary packages for that series continuing until early 2023

Significant user-visible changes:
- Data set esoph in package datasets now provides the correct numbers of controls; previously it had the numbers of cases added to these

New features:
- omegahat.net is no longer one of the repositories known by default to setRepositories(). (Nowadays it only provides source packages and is often unavailable.)
- Function package_dependencies() (in package tools) can now use different dependency types for direct and recursive dependencies
- The checking of the size of tarball in R CMD check --as-cran <pkg> may be tweaked via the new environment variable _R_CHECK_CRAN_INCOMING_TARBALL_THRESHOLD_
- Using c() to combine a factor with other factors now gives a factor, an ordered factor when combining ordered factors wit identical levels
- apply() gains a simplify argument to allow disabling of simplification of results
- The format() method for class "ftable" gets a new option justify
- New ...names() utility
- type.convert() now warns when its as.is argument is not specified, as the help file always said it _should_. In that case, the default is changed to TRUE in line with its change in read.table() (related to stringsAsFactor) in R 4.0.0.
- When printing list arrays, classed objects are now shown _via_ their format() value if this is a short enough character string, or by giving the first elements of their class vector and their length.
- capabilities() gets new entry "Rprof" which is TRUE when R has been configured with the equivalent of --enable-R-profiling (as it is by default)
- str(xS4) now also shows extraneous attributes of an S4 object xS4.
- Rudimentary support for vi-style tags in rtags() and R CMD rtags has been added
- checkRdContents() is now exported from tools; it and also checkDocFiles() have a new option chkInternal allowing to check Rd files marked with keyword "internal" as well. The latter can be activated for R CMD check via environment variable _R_CHECK_RD_INTERNAL_TOO_.
- New functions numToBits() and numToInts() extend the raw conversion utilities to (double precision) numeric
- Functions URLencode() and URLdecode() in package utils now work on vectors of URIs
- path.expand() can expand ~user on most Unix-alikes even when readline is not in use. It tries harder to expand ~, for example should environment variable HOME be unset.
- For HTML help (both dynamic and static), Rd file links to help pages in external packages are now treated as references to topics rather than file names, and fall back to a file link only if the topic is not found in the target package. The earlier rule which prioritized file names over topics can be restored by setting the environment variable _R_HELP_LINKS_TO_TOPICS_ to a false value.
- c() now removes NULL arguments before dispatching to methods, thus simplifying the implementation of c() methods, _but_ for back compatibility keeps NULL when it is the first argument.
- Vectorize()'s result function's environment no longer keeps unneeded objects.
- Function ...elt() now propagates visibility consistently with ..n.
- capture.output() no longer uses non-standard evaluation to evaluate its arguments. This makes evaluation of functions like
- parent.frame() more consistent.
- packBits(bits, type="double") now works as inverse of numToBits()
- curlGetHeaders() has two new arguments, timeout to specify the timeout for that call (overriding getOption("timeout")) and TLS to specify the minimum TLS protocol version to be used for https:// URIs (_inter alia_ providing a means to check for sites using deprecated TLS versions 1.0 and 1.1).
- For nls(), an optional constant scaleOffset may be added to the denominator of the relative offset convergence test for cases where the fit of a model is expected to be exact. nls(*, trace=TRUE) now also shows the convergence criterion.
- Numeric differentiation _via_ numericDeriv() gets new optional arguments eps and central, the latter for taking central divided differences. The latter can be activated for nls() via nls.control(nDcentral = TRUE).
- nls() now passes the trace and control arguments to getInitial(), notably for all self-starting models, so these can also be fit in zero-noise situations via a scaleOffset. For this reason, the initial function of a selfStart model must now have ... in its argument list.
- bquote(splice = TRUE) can now splice expression vectors with attributes: this makes it possible to splice the result of parse(keep.source = TRUE). (Report and patch provided by Lionel Henry in PR#17869.)
- textConnection() gets an optional name argument.
- get(), exists(), and get0() now signal an error if the first argument has length greater than 1. Previously additional elements were silently ignored. (Suggested by Antoine Fabri on R-devel.)
- R now provides a shorthand notation for creating functions, e.g. (x) x + 1 is parsed as function(x) x + 1.
- R now provides a simple native forward pipe syntax |>. The simple form of the forward pipe inserts the left-hand side as the first argument in the right-hand side call. The pipe implementation as a syntax transformation was motivated by suggestions from Jim Hester and Lionel Henry.
- all.equal(f, g) for functions now by default also compares their environment(.)s, notably via new all.equal method for class function. Comparison of nls() fits, e.g., may now need all.equal(m1, m2, check.environment = FALSE).
- .libPaths() gets a new option include.site, allowing to _not_ include the site library. (Thanks to Dario Strbenac's suggestion and Gabe Becker's PR#18016.)
- Lithuanian translations are now available. (Thanks to Rimantas Zakauskas.)
- names() now works for DOTSXP objects. On the other hand, in R-lang, the R language manual, we now warn against relying on the structure or even existence of such dot-dot-dot objects.
- all.equal() no longer gives an error on DOTSXP objects.
- capabilities("cairo") now applies only to the file-based devices as it is now possible (if very unusual) to build R with Cairo support for those but not for X11().
- There is optional support for tracing the progress of loadNamespace() - see its help.
- (Not Windows.) l10n_info() reports an additional element, the name of the encoding as reported by the OS (which may differ from the encoding part (if any) of the result from Sys.getlocale("LC_CTYPE").
- New function gregexec() which generalizes regexec() to find _all_ disjoint matches and well as all substrings corresponding to parenthesized subexpressions of the given regular expression. (Contributed by Brodie Gaslam.)
- New function charClass() in package utils to query the wide-character classification functions in use (such as iswprint).
- The names of quantile()'s result no longer depend on the global getOption("digits"), but quantile() gets a new optional argument digits = 7 instead.
- grep(), sub(), regexp and variants work considerably faster for long factors with few levels. (Thanks to Michael Chirico's PR#18063.)
- Provide grouping of x11() graphics windows within a window manager such as Gnome or Unity; thanks to a patch by Ivan Krylov posted to R-devel.
- The split() method for class data.frame now allows the f argument to be specified as a formula.
- sprintf now warns on arguments unused by the format string.
- New palettes "Rocket" and "Mako" for hcl.colors() (approximating palettes of the same name from the 'viridisLite' package).
- Contributed by Achim Zeileis.
- The base environment and its namespace are now locked (so one can no longer add bindings to these or remove from these).
- Rterm handling of multi-byte characters has been improved, allowing use of such characters when supported by the current locale.
- Rterm now accepts ALT+ +xxxxxxxx sequences to enter Unicode characters as hex digits.
- Environment variable LC_ALL on Windows now takes precedence over LC_CTYPE and variables for other supported categories, matching the POSIX behaviour.
- duplicated() and anyDuplicated() are now optimized for integer and real vectors that are known to be sorted via the ALTREP
- framework

Graphics:
- The graphics engine version, R_GE_version, has been bumped to 14 and so packages that provide graphics devices should be reinstalled.
- Graphics devices should now specify deviceVersion to indicate what version of the graphics engine they support.
- Graphics devices can now specify deviceClip. If TRUE, the graphics engine will never perform any clipping of output itself. The clipping that the graphics engine does perform (for both canClip = TRUE and canClip = FALSE) has been improved to avoid producing unnecessary artifacts in clipped output.
- The grid package now allows gpar(fill) to be a linearGradient(), a radialGradient(), or a pattern(). The viewport(clip) can now also be a grob, which defines a clipping path, and there is a new viewport(mask) that can also be a grob, which defines a mask.
- These new features are only supported so far on the Cairo-based graphics devices and on the pdf() device.
- (Not Windows.) A warning is given when a Cairo-based type is specified for a png(), jpeg(), tiff() or bmp() device but Cairo is unsupported (so type = "Xlib" is tried instead).
- grSoftVersion() now reports the versions of FreeType and FontConfig if they are used directly (not _via_ Pango), as is most commonly done on macOS.

C-level facilities:
- The _standalone_ libRmath math library and R's C API now provide log1pexp() again as documented, and gain log1mexp()

Installation on a unix-alike:
- configure checks for a program pkgconf if program pkg-config is not found. These are now only looked for on the path (like almost all other programs) so if needed specify a full path to the command in PKG_CONFIG, for example in file config.site.
- C99 function iswblank is required - it was last seen missing ca 2003 so the workaround has been removed.
- There are new configure options --with-internal-iswxxxxx, --with-internal-towlower and --with-internal-wcwidth which allows the system functions for wide-character classification case-switching and width (wcwidth and wcswidth) to be replaced b internal ones. The first has long been used on macOS, AIX (and Windows) but this enables it to be unselected there and selected for other platforms (it is the new default on Solaris). The second is new in this version of R and is selected by default on macOS and Solaris. The third has long been the default and remains so as it contains customizations for East Asian languages.
- System versions of these functions are often minimally implemented (sometimes only for ASCII characters) and may not cover the full range of Unicode points: for example Solaris (and Windows) only cover the Basic Multilingual Plane.
- Cairo installations without X11 are more likely to be detected by configure, when the file-based Cairo graphics devices will be available but not X11(type = "cairo").
- There is a new configure option --with-static-cairo which is the default on macOS. This should be used when only static cairo (and where relevant, Pango) libraries are available.
- Cairo-based graphics devices on platforms without Pango but with FreeType/FontConfig will make use of the latter for font selection.
- LINK-TIME OPTIMIZATION on a UNIX-ALIKE:
- Configuring with flag --enable-lto=R now also uses LTO when installing the recommended packages.
- R CMD INSTALL and R CMD SHLIB have a new flag --use-LTO to use LTO when compiling code, for use with R configured with --enable-lto=R. For R configured with --enable-lto, they have the new flag --no-use-LTO. Packages can opt in or out of LTO compilation _via_ a UseLTO field in the DESCRIPTION file. (As usual this can be overridden by the command-line flags.)

Building r on windows:
- for GCC >= 8, FC_LEN_T is defined in config.h and hence character lengths are passed from C to Fortran in _inter alia_ BLAS and LAPACK calls.
- There is a new text file src/gnuwin32/README.compilation, which outlines how C/Fortran code compilation is organized and documents new features:
- R can be built with Link-Time Optimization with a suitable compiler - doing so with GCC 9.2 showed several inconsistencies which have been corrected.
- There is support for cross-compiling the C and Fortran code in R and standard packages on suitable (Linux) platforms. This is mainly intended to allow developers to test later versions of compilers - for example using GCC 9.2 or 10.x has detected issues that GCC 8.3 in Rtools40 does not.
- There is experimental support for cross-building R packages with C, C++ and/or Fortran code.
- The R installer can now be optionally built to support a single architecture (only 64-bit or only 32-bit).

Package installation:
- The default C++ standard has been changed to C++14 where available (which it is on all currently checked platforms): if not (as before) C++11 is used if available otherwise C++ is not supported. Packages which specify C++11 will still be installed using C++11.
- C++14 compilers may give deprecation warnings, most often for std::random_shuffle (deprecated in C++14 and removed in C++17). Either specify C++11 (see 'Writing R Extensions') or modernize the code and if needed specify C++14. The latter has been supported since R 3.4.0 so the package's DESCRIPTION would need to include something like
- Depends: R (>= 3.4)

Package installation on Windows:
- R CMD INSTALL and R CMD SHLIB make use of their flag --use-LTO when the LTO_OPT make macro is set in file etc/${R_ARCH}/Makeconf or in a personal/site Makevars file. (For details see 'Writing R Extensions' SS4.5.)
- This provides a valuable check on code consistency. It does work with GCC 8.3 as in Rtools40, but that does not detect everything the CRAN checks with current GCC do.

Utilities:
- R CMD check can now scan package functions for bogus return statements, which were possibly intended as return() calls (wish of PR#17180, patch by Sebastian Meyer). This check can be activated via the new environment variable _R_CHECK_BOGUS_RETURN_, true for --as-cran.
- R CMD build omits tarballs and binaries of previous builds from the top-level package directory. (PR#17828, patch by Sebastian Meyer.)
- R CMD check now runs sanity checks on the use of LazyData, for example that a data directory is present and that LazyDataCompression is not specified without LazyData and has a documented value. For packages with large LazyData databases without specifying LazyDataCompression, there is a reference to the code given in 'Writing R Extensions' SS1.1.6 to test the choice of compression (as in all the CRAN packages tested a non-default method was preferred).
- R CMD build removes LazyData and LazyDataCompression fields from the DESCRIPTION file of packages without a data directory.

Encoding-related changes:
- The parser now treats Unnnnnnnn escapes larger than the upper limit for Unicode points (U10FFFF) as an error as they cannot be represented by valid UTF-8. Where such escapes are used for outputting non-printable (including unassigned) characters, 6 hex digits are used (rather than 8 with leading zeros). For clarity, braces are used, for example U{0effff}.
- The parser now looks for non-ASCII spaces on Solaris (as previously on most other OSes).
- There are warnings (including from the parser) on the use of unpaired surrogate Unicode points such as uD834. (These cannot be converted to valid UTF-8.)
- Functions nchar(), tolower(), toupper() and chartr() and those using regular expressions have more support for inputs with a marked Latin-1 encoding.
- The character-classification functions used (by default) to replace the system iswxxxxx functions on Windows, macOS and AIX have been updated to Unicode 13.0.0.
- The character-width tables have been updated to include new assignments in Unicode 13.0.0.
- The code for evaluating default (extended) regular expressions now uses the same character-classification functions as the rest of R (previously they differed on Windows, macOS and AIX).
- There is a build-time option to replace the system's wide-character wctrans C function by tables shipped with R: use configure option --with-internal-towlower or (on Windows) -DUSE_RI18N_CASE in CFLAGS when building R. This may be needed to allow tolower() and toupper() to work with Unicode characters beyond the Basic Multilingual Plane where not supported by system functions (e.g. on Solaris where it is the new default).
- R is more careful when truncating UTF-8 and other multi-byte strings that are too long to be printed, passed to the system or libraries or placed into an internal buffer. Truncation will no longer produce incomplete multibyte characters.

Deprecated and defunct:
- Function plclust() from the package stats and package.dependencies(), pkgDepends(), getDepList(), installFoundDepends(), and vignetteDepends() from package tools are defunct.
- Defunct functions checkNEWS() and readNEWS() from package tools and CRAN.packages() from utils have been removed.
- R CMD config CXXCPP is defunct (it was deprecated in R 3.6.2).
- parallel::detectCores() drops support for Irix (retired in 2013).
- The LINPACK argument to chol.default(), chol2inv(), solve.default() and svd() has been defunct since R 3.1.0. It was silently ignored up to R 4.0.3 but now gives an error.
- Subsetting/indexing, such as ddd[*] or ddd$x on a DOTSXP(dot-dot-dot) object ddd has been disabled; it worked by accident only and was undocumented.

Fixed:
- Many more C-level allocations (mainly by malloc and strdup) are checked for success with suitable alternative actions.
- Bug fix for replayPlot(); this was turning off graphics engine display list recording if a recorded plot was replayed in the same session. The impact of the bug became visible if resize the device after replay OR if attempted another savePlot() after replay (empty display list means empty screen on resize or empty saved plot).
- R CMD check etc now warn when a package exports non-existing S4 classes or methods, also in case of no "methods" presence. (Reported by Alex Bertram; reproducible example and patch by Sebastian Meyer in PR#16662.)
- boxplot() now also accepts calls for labels such as ylab, the same as plot(). (Reported by Marius Hofert.)
- The help page for xtabs() now correctly states that addNA is setting na.action = na.pass among others. (Reported as PR#17770 by Thomas Soeiro.)
- The R CMD check <pkg> gives a longer and more comprehensible message when DESCRIPTION misses dependencies, e.g., in Imports:. (Thanks to the contributors of PR#17179.)
- update.default() now calls the generic update() on the formula to work correctly for models with extended formulas. (As reported and suggested by Neal Fultz in PR#17865.)
- The horizontal position of leaves in a dendrogram is now correct also with center = FALSE. (PR#14938, patch from Sebastian Meyer.)
- all.equal.POSIXt() no longer warns about and subsequently ignores inconsistent "tzone" attributes, but describes the difference in its return value (PR#17277). This check can be disabled _via_ the new argument check.tzone = FALSE as suggested by Sebastian Meyer.
- as.POSIXct() now populates the "tzone" attribute from its tz argument when x is a logical vector consisting entirely of NA values.
- x[[2^31]] <- v now works.
- In log-scale graphics, axis() ticks and label positions are now computed more carefully and symmetrically in their range, typically providing _more_ ticks, fulfilling wishes in PR#17936. The change really corresponds to an improved axisTicks() (package grDevices), potentially influencing grid and lattice, for example.
- qnorm(<very large negative>, log.p=TRUE) is now correct to at least five digits where it was catastrophically wrong, previously.
- sum(df) and similar "Summary"- and "Math"-group member functions now work for data frames df with logical columns, notably also of zero rows
- unsplit() had trouble with tibbles due to unsound use of rep(NA, len)-indexing, which should use NA_integer_
- pnorm(x, log.p = TRUE) underflows to -Inf slightly later.
- show(<hidden S4 generic>) prints better and without quotes for non-hidden S4 generics.
- read.table() and relatives treated an "NA" column name as missing when check.names = FALSE PR#18007
- Parsing strings containing UTF-16 surrogate pairs such as "uD834uDD1E" works better on some (uncommon) platforms. sprintf("%X", utf8ToInt("uD834uDD1E")) should now give "1D11E" on all platforms.
- identical(x,y) is no longer true for differing DOTSXP objects, fixing PR#18032.
- str() now works correctly for DOTSXP and related exotics, even when these are doomed. Additionally, it no longer fails for lists with a class and "irregular" method definitions such that e.g. lapply(*) will necessarily fail, as currently for different igraph objects.
- Too long lines in environment files (e.g. Renviron) no longer crash R. This limit has been increased to 100,000 bytes. (PR#18001.)
- There is a further workaround for FreeType giving incorrect italic font faces with cairo-based graphics devices on macOS.
- add_datalist(*, force = TRUE) (from package tools) now actually updates an existing data/datalist file for new content
- cut.Date() and cut.POSIXt() could produce an empty last interval for breaks = "months" or breaks = "years". (Reported as PR#18053 by Christopher Carbone.)
- Detection of the encoding of 'regular' macOS locales such as en_US (which is UTF-8) had been broken by a macOS change: fortunately these are now rarely used with en_US.UTF-8 being preferred.
- sub() and gsub(pattern, repl, x, *) now keep attributes of x such as names() also when pattern is NA (PR#18079).
- Time differences ("difftime" objects) get a replacement and a rep() method to keep "units" consistent.
- The RdOpts macro, setting defaults for Sexpr options in an Rd file, had been ineffective since R 2.12.0: it now works again
- mclapply and pvec no longer accidentally terminate parallel processes started before by mcparallel or related calls in package parallel (PR#18078).
- grep and other functions for evaluating (extended) regular expressions handle in Unicode also strings not explicitly flagged
- UTF-8, but flagged native when running in UTF-8 locale
- Fixed a crash in fifo implementation on Windows (PR#18031)
- Binary mode in fifo on Windows is now properly detected from argument open

R for Windows 4.1.0 相關參考資料
Browse R-Portable4.1.0 at SourceForge.net

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