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法律研究如何在 base R 中獲取已安裝軟體包的列表？
在 R 中安裝軟體包沒有限制，但 base R 也有與之關聯的一些軟體包。因此，無需每次都在 R 控制檯中安裝或載入它們。我們可以直接使用任何 base R 軟體包函式來執行分析。如果我們想獲取這些軟體包的列表，可以使用如下所示的程式碼
示例
> installed.packages(priority="base")
輸出
Package LibPath Version Priority base "base" "C:/Program Files/R/R-4.0.2/library" "4.0.2" "base" compiler "compiler" "C:/Program Files/R/R-4.0.2/library" "4.0.2" "base" datasets "datasets" "C:/Program Files/R/R-4.0.2/library" "4.0.2" "base" graphics "graphics" "C:/Program Files/R/R-4.0.2/library" "4.0.2" "base" grDevices "grDevices" "C:/Program Files/R/R-4.0.2/library" "4.0.2" "base" grid "grid" "C:/Program Files/R/R-4.0.2/library" "4.0.2" "base" methods "methods" "C:/Program Files/R/R-4.0.2/library" "4.0.2" "base" parallel "parallel" "C:/Program Files/R/R-4.0.2/library" "4.0.2" "base" splines "splines" "C:/Program Files/R/R-4.0.2/library" "4.0.2" "base" stats "stats" "C:/Program Files/R/R-4.0.2/library" "4.0.2" "base" stats4 "stats4" "C:/Program Files/R/R-4.0.2/library" "4.0.2" "base" tcltk "tcltk" "C:/Program Files/R/R-4.0.2/library" "4.0.2" "base" tools "tools" "C:/Program Files/R/R-4.0.2/library" "4.0.2" "base" utils "utils" "C:/Program Files/R/R-4.0.2/library" "4.0.2" "base" Depends Imports LinkingTo base NA NA NA compiler NA NA NA datasets NA NA NA graphics NA "grDevices" NA grDevices NA NA NA grid NA "grDevices, utils" NA methods NA "utils, stats" NA parallel NA "tools, compiler" NA splines NA "graphics, stats" NA stats NA "utils, grDevices, graphics" NA stats4 NA "graphics, methods, stats" NA tcltk NA "utils" NA tools NA NA NA utils NA NA NA Suggests Enhances base "methods" NA compiler NA NA datasets NA NA graphics NA NA grDevices "KernSmooth" NA grid "lattice" NA methods "codetools" NA parallel "methods" "snow, nws, Rmpi" splines "Matrix, methods" NA stats "MASS, Matrix, SuppDists, methods, stats4" NA stats4 NA NA tcltk NA NA tools "codetools, methods, xml2, curl, commonmark" NA utils "methods, xml2, commonmark" NA License License_is_FOSS License_restricts_use OS_type base "Part of R 4.0.2" NA NA NA compiler "Part of R 4.0.2" NA NA NA datasets "Part of R 4.0.2" NA NA NA graphics "Part of R 4.0.2" NA NA NA grDevices "Part of R 4.0.2" NA NA NA grid "Part of R 4.0.2" NA NA NA methods "Part of R 4.0.2" NA NA NA parallel "Part of R 4.0.2" NA NA NA splines "Part of R 4.0.2" NA NA NA stats "Part of R 4.0.2" NA NA NA stats4 "Part of R 4.0.2" NA NA NA tcltk "Part of R 4.0.2" NA NA NA tools "Part of R 4.0.2" NA NA NA utils "Part of R 4.0.2" NA NA NA MD5sum NeedsCompilation Built base NA NA "4.0.2" compiler NA NA "4.0.2" datasets NA NA "4.0.2" graphics NA "yes" "4.0.2" grDevices NA "yes" "4.0.2" grid NA "yes" "4.0.2" methods NA "yes" "4.0.2" parallel NA "yes" "4.0.2" splines NA "yes" "4.0.2" stats NA "yes" "4.0.2" stats4 NA NA "4.0.2" tcltk NA "yes" "4.0.2" tools NA "yes" "4.0.2" utils NA "yes" "4.0.2"
更新於: 19-11-2020
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