Software-update: R 4.2.3

R is een ontwikkelomgeving en programmeertaal voor statistische en data-analysedoeleinden. Het werd oorspronkelijk ontworpen door Ross Ihaka en Robert Gentleman (vandaar de naam R) aan de Universiteit van Auckland, Nieuw-Zeeland. In R is programmeren sterk objectgeoriënteerd en de functionaliteit kan uitgebreid worden via packages die onder andere via cran beschikbaar worden gesteld. Het R-coreteam, dat zich vandaag de dag bezighoudt met de doorontwikkeling, heeft kort geleden versie 4.2.3 uitgebracht met de titel Shortstop Beagle. De changelog van deze uitgave ziet er als volgt uit:

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).
• as.Date.POSIXlt(x) would return "1970-01-01" instead of NA in R 4.2.2, e.g., for
  x <- as.POSIXlt(c("2019-01-30","2001-1-1"))
  x$mon <- c(0L, NA); as.Date(x)
• R CMD check failed to apply enabled _R_CHECK_SUGGESTS_ONLY_ to examples and vignettes (regression in R 4.2.0).
• R CMD check did not re-build vignettes in separate processes by default (regression in R 4.2.0).
• Running examples from HTML documentation now restores previous knitr settings and options (PR#18420).
• Quartz: fonts are now located using Core Graphics API instead of deprecated ATS which is no longer supported in the macOS 13 SDK (PR#18426). This also addresses an issue where the currently used font in the Quartz device context was not correctly retained.
• (Windows) Math symbols in text drawing functions are again rendered correctly (PR#18440). This fixes a regression in R 4.2.1 caused by a fix in PR#18382 which uncovered an issue in GraphApp due to which the symbol charset was not used with TT Symbol font face.
• (Windows) Installing a package with a src/Makefile.{win,ucrt} file includes ~/.R/Makevars.win64 in the search for user makevars, as documented in "R Installation and Administration" and done for packages with a src/Makevars.{win,ucrt} file.
• format(, "....%OS") with n > 0 no longer accidentally uses the unbalanced seconds, thanks to Suharto Anggono's report (including patch) in PR#18448.
• solve.default(a, b) works around issues with some versions of LAPACK when a contains NA or NaN values.
• When UseMethod() cannot dispatch, it no longer segfaults producing the error message in case of a long class(), thanks to Joris Vankerschaver's report (including patch) in PR#18447.
• When example(foo, ..) produces graphics on an interactive device it needs to open itself, it now leaves devAskNewPage() unchanged even when it was FALSE, thus fixing a 14 years old ''.
• packageDescription() again catches errors from encoding conversions. This also fixes broken packageVersion() in C locale on systems where iconv does not support transliteration.

Versienummer	4.2.3
Releasestatus	Final
Besturingssystemen	Windows 7, Linux, BSD, macOS, Windows Server 2008, Windows Server 2012, Windows 8, Windows 10, Windows Server 2016, Windows Server 2019, Windows 11
Website	The R Project
Download	https://cran.r-project.org/src/base/R-4/
Licentietype	Freeware