detach all packages while working in R
r, workspace
Solution
So, someone should have simply answered the following.
lapply(paste('package:',names(sessionInfo()$otherPkgs),sep=""),detach,character.only=TRUE,unload=TRUE)
(edit: 6-28-19) In the latest version of R 3.6.0 please use instead.
invisible(lapply(paste0('package:', names(sessionInfo()$otherPkgs)), detach, character.only=TRUE, unload=TRUE))
Note the use of invisible(*) is not necessary but can be useful to prevent the NULL reply from vertically spamming the R window.
(edit: 9/20/2019) In version 3.6.1
It may be helpful to convert loaded only `names(sessionInfo()$loadedOnly)` to explicitly attached packages first, and then detach the packages, as so.
lapply(names(sessionInfo()$loadedOnly), require, character.only = TRUE)
invisible(lapply(paste0('package:', names(sessionInfo()$otherPkgs)), detach, character.only=TRUE, unload=TRUE, force=TRUE))
One can attempt to unload base packages via $basePkgs and also attempt using `unloadNamespace(loadedNamespaces())`. However these typically are fraught with errors and could break basic functionality such as causing `sessionInfo()` to return only errors. This typically occurs because of a lack of reversibility in the original package's design. Currently `timeDate` can break irreversibly, for example.
(edit: 9/24/20) for version 4.0.2 The following first loads packages to test and then gives a sequence to fully detach all packages except for package "base" and "utils". It is highly recommended that one does not detach those packages.
invisible(suppressMessages(suppressWarnings(lapply(c("gsl","fBasics","stringr","stringi","Rmpfr"), require, character.only = TRUE))))
invisible(suppressMessages(suppressWarnings(lapply(names(sessionInfo()$loadedOnly), require, character.only = TRUE))))
sessionInfo()
#the above is a test
invisible(lapply(paste0('package:', c("stringr","fBasics")), detach, character.only=TRUE,unload=TRUE))
#In the line above, I have inserted by hand what I know the package dependencies to be. A user must know this a priori or have their own automated
#method to discover it. Without removing dependencies first, the user will have to cycle through loading namespaces and then detaching otherPkgs a
#second time through.
invisible(lapply(paste0('package:', names(sessionInfo()$otherPkgs)), detach, character.only=TRUE,unload=TRUE))
bspkgs.nb<-sessionInfo()$basePkgs[sessionInfo()$basePkgs!="base"]
bspkgs.nbu<-bspkgs.nb[bspkgs.nb!="utils"]
names(bspkgs.nbu)<-bspkgs.nbu
suppressMessages(invisible(lapply(paste0('package:', names(bspkgs.nbu)), detach, character.only=TRUE,unload=TRUE)))
#again this thoroughly removes all packages and loaded namespaces except for base packages "base" and "utils" (which is highly not recommended).
Problem
While working to solve another problem I got this problem: I can remove all R objects by: ``` rm(list = ls(all = TRUE)) ``` Is there equivalent command that can detach installed packages during working session? ``` > sessionInfo() R version 2.12.2 (2011-02-25) Platform: i386-pc-mingw32/i386 (32-bit) locale: [1] LC_COLLATE=English_United States.1252 [2] LC_CTYPE=English_United States.1252 [3] LC_MONETARY=English_United States.1252 [4] LC_NUMERIC=C [5] LC_TIME=English_United States.1252 attached base packages: [1] stats graphics grDevices utils datasets methods base ``` require(ggplot2) ``` Loading required package: ggplot2 Loading required package: reshape Loading required package: plyr Attaching package: 'reshape' The following object(s) are masked from 'package:plyr': round_any Loading required package: grid Loading required package: proto ``` sessionInfo() ``` R version 2.12.2 (2011-02-25) Platform: i386-pc-mingw32/i386 (32-bit) locale: [1] LC_COLLATE=English_United States.1252 [2] LC_CTYPE=English_United States.1252 [3] LC_MONETARY=English_United States.1252 [4] LC_NUMERIC=C [5] LC_TIME=English_United States.1252 attached base packages: [1] grid stats graphics grDevices utils datasets methods [8] base other attached packages: [1] ggplot2_0.8.9 proto_0.3-9.1 reshape_0.8.4 plyr_1.4 ``` I tried this way, although even it worked in not a global solution : ``` pkg <- c("package:ggplot2_0.8.9", "package:proto_0.3-9.1", "package:reshape_0.8.4", "package:plyr_1.4") detach(pkg, character.only = TRUE) Error in detach(pkg, character.only = TRUE) : invalid 'name' argument In addition: Warning message: In if (is.na(pos)) stop("invalid 'name' argument") : the condition has length > 1 and only the first element will be used ``` What I am loking for is something global like: ``` rm(list = ls(all = TRUE)) ``` for objects, expect it would not remove attached base packages thanks;