R 语言更新到 3.4.2 版本，昵称 Short Summer
R语言是主要用于统计分析、绘图的语言和操作环境。R本来是由来自新西兰奥克兰大学的Ross Ihaka和Robert Gentleman 开发（也因此称为R），现在由“R开发核心团队”负责。 20170928发布最新版3.4.2 昵称Short Summer （短暂的夏天） 。 NEW FEATURES Setting the LC_ALL category in Sys.setlocale() invalidates any cached locale-specific day/month names and the AM/PM indicator for strptime() (as setting LC_TIME has since R 3.1.0). The version of LAPACK included in the sources has been updated to 3.7.1, a bug-fix release. The default for tools::write_PACKAGES(rds_compress=) has been changed to "xz" to match the compression used by CRAN. c() and unlist() are now more efficient in constructing the names(.) of their return value, thanks to a proposal by Suharto Anggono. (PR#17284) UTILITIES R CMD check checks for and R CMD build corrects CRLF line endings in shell scripts configure and cleanup (even on Windows). INSTALLATION on a UNIX-ALIKE The order of selection of OpenMP flags has been changed: Oracle Developer Studio 12.5 accepts -fopenmp and -xopenmp but only the latter enables OpenMP so it is now tried first. BUG FIXES within(List, rm(x1, x2)) works correctly again, including when List[["x2"]] is NULL. regexec(pattern, text, *) now applies as.character(.) to its first two arguments, as documented. write.table() and related functions, writeLines(), and perhaps other functions writing text to connections did not signal errors when the writes failed, e.g. due to a disk being full. Errors will now be signalled if detected during the write, warnings if detected when the connection is closed. (PR#17243) rt() assumed the ncp parameter was a scalar. (PR#17306) menu(choices) with more than 10 choices which easily fit into one getOption("width")-line no longer erroneously repeats choices. (PR#17312) length()<- on a pairlist succeeds. (https://stat.ethz.ch/pipermail/r-devel/2017-July/074680.html) Language objects such as quote(("\n")) or R functio...
fbf 发布于 2017-10-23