How to remove all user installed packages in R

October 21, 2016
By

(This article was first published on Rbloggers – The Analytics Lab, and kindly contributed to R-bloggers)

A little while ago I ran into an issue with R and RStudio. In order to solve this issue I saw myself forced to remove all user installed packages. For a lot of practical reasons it was not an option for me to simply uninstall R and start with a clean slate and a new installation of R.

Therefore I had to find another solution which could help me with removing all user installed packages. I found a few useful tips and tricks, but nothing that immediately did the job for me. That’s why I’ve decided to share my solution, I hope this can help you in the hour of need.

Here is the script I’ve created in order to remove all user installed packages, without removing any base packages for R or MRO.

# create a list of all installed packages
 ip <- as.data.frame(installed.packages())
 head(ip)
# if you use MRO, make sure that no packages in this library will be removed
 ip <- subset(ip, !grepl("MRO", ip$LibPath))
# we don't want to remove base or recommended packages either\
 ip <- ip[!(ip[,"Priority"] %in% c("base", "recommended")),]
# determine the library where the packages are installed
 path.lib <- unique(ip$LibPath)
# create a vector with all the names of the packages you want to remove
 pkgs.to.remove <- ip[,1]
 head(pkgs.to.remove)
# remove the packages
 sapply(pkgs.to.remove, remove.packages, lib = path.lib)

To leave a comment for the author, please follow the link and comment on their blog: Rbloggers – The Analytics Lab.

R-bloggers.com offers daily e-mail updates about R news and tutorials on topics such as: Data science, Big Data, R jobs, visualization (ggplot2, Boxplots, maps, animation), programming (RStudio, Sweave, LaTeX, SQL, Eclipse, git, hadoop, Web Scraping) statistics (regression, PCA, time series, trading) and more...



If you got this far, why not subscribe for updates from the site? Choose your flavor: e-mail, twitter, RSS, or facebook...

Comments are closed.

Search R-bloggers


Sponsors

Never miss an update!
Subscribe to R-bloggers to receive
e-mails with the latest R posts.
(You will not see this message again.)

Click here to close (This popup will not appear again)