What's new in this version: New features: - runmed(x, *) gains a new option na.action determining _how_ to handle NaN or NA in x - dotchart() gains new options ann, xaxt, frame.plot and log
Installation on a unix-alike: - Detection of the C stack direction has been moved from run-time to configure: this is safer with LTO builds and allows the detection to be overridden - see file config.site - Source-code changes enable installation on platforms using gcc-fno-common (the expected default for gcc 10.x)
C-level facilities: - installTrChar (which is nowadays is wrapped by installChar) is defined in Rinternals.h. (Neither are part of the API.)
Package installation: - Header Rconfig.h contains the value of FC_LEN_T deduced at installation which is used by the prototypes in headers R_ext/BLAS.h and R_ext/Lapack.h but to avoid extensive breakage this is only exposed when USE_FC_LEN_T is defined - If a package's C/C++ calls to BLAS/LAPACK allow for the 'hidden' arguments used by most Fortran compilers to pass the lengths of Fortran character arguments, define USE_FC_LEN_T and include Rconfig.h (possibly _via_ R.h) before including R_ext/BLAS.h or R_ext/Lapack.h - A package with Fortran source code and perhaps C (but not C++) sources can request for its shared object/DLL to be linked by the Fortran compiler by including a line USE_FC_TO_LINK= in src/Makevars[.win] and using $(SHLIB_OPENMP_FFLAGS) as part of PKG_LIBS - The known reason for doing so is a package which uses Fortran (only) OpenMP on a platform where the Fortran OpenMP runtime is incompatible with the C one (e.g. gfortran 9.x with clang)
Utilities: - R CMD check has a new option to mitigate checks leaving files/directories in /tmp. See the 'R Internals' manual - this is part of --as-cran
Windows: - The default standard for C++ in package installation is C++11 (as it has been on other platforms where available since R 3.6.0: the default toolchain on Windows was defaulting to C++98)
Deprecated and defunct: - Support for specifying C++98 in package installation is deprecated - Support in R CMD config for F77, FCPIFCPLAGS, CPP, CXXCPP and CXX98 and similar is deprecated. (CPP is found from the system make and may well not be set) - Use $CC -E and $CXX -E instead of CPP and CXXCPP
Bug fixes: - runmed(x, *) when x contains missing values now works consistently for both algorithm="Stuetzle" and "Turlach", and no longer segfaults for "Turlach", as reported by Hilmar Berger - apply(diag(3), 2:3, mean) now gives a helpful error message - dgamma(x, shape, log=TRUE) now longer overflows to Inf for shape < 1 and very small x, fixing PR#17577, reported by Jonathan Rougier - Buffer overflow in building error messages fixed. Reported by Benjamin Tremblay - options(str = .) is correctly initialized at package utils load time, now. A consequence is that str() in scripts now is more consistent to interactive use, e.g., when displaying function(**) argument lists - as.numeric() now gives correct error message - Printing ls.str() no longer wrongly shows "" in rare cases - Auto-printing S4 objects no longer duplicates the object, for faster speed and reduced memory consumption. Reported by Aaron Lun - pchisq(, , ncp=100) no longer takes practically forever in some cases. Hence ditto for corresponding qchisq() calls - x %% L for finite x no longer returns NaN when L is infinite, nor suffers from cancellation for large finite L, thanks to Long Qu's Analogously, x %/% L and L %/% x suffer less from cancellation and return values corresponding to limits for large L - grepl(NA, *) now returns logical as documented - options(warn=1e11) is an error now, instead of later leading to C stack overflow because of infinite recursion - R_tryCatch no longer transfers control for all conditions. Reported and patch provided by Lionel Henry in PR#17617 - format(object.size(.), digits=NULL) now works, fixing PR#17628 reported by Jonathan Carroll - get_all_vars(f, d) now also works for cases, e.g. where d contains a matrix. Reported by Simon Wood in 2009 and patch provided by Ben Bolker in PR#13624 - Additionally, it now also works when some variables are data frames, fixing PR#14905, reported by Patrick Breheny - barplot() could get spacings wrong if there were exactly two bars PR#15522. Patch by Michael Chirico - power.t.test() works in more cases when returning values of n smaller than 2 - dotchart(*, pch=., groups=.) now works better. Reported by Robert and confirmed by Nic Rochette in PR#16953 - canCoerce(obj, cl) no longer assumes length(class(obj)) == 1 - plot.formula(*, subset = *) now also works in a boundary case reported by Robert Schlicht (TU Dresden) - readBin() and writeBin() of a rawConnection() now also work inlarge cases
R for Windows 3.6.2 相關參考資料
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