Permanently Setting the CRAN repository

November 29, 2011

(This article was first published on R Blog, and kindly contributed to R-bloggers)

Setting the CRAN repository so that it does not ask every time you try to install a package  is something that I think few people bother to do, but it is so simple and can save a fair bit of frustration when working.  This is accomplished through a setting in one of the Rprofile files.  There is the site file found at either


on linux or

C:\Program Files\R\R-2.14.0\etc\

on windows, for R-2.14.0.  In this file you will even find an example of setting the CRAN mirror.  You can edit here is you have root or administrative privileges, but more likely you will copy it and place it in the personal


file in your home directory.

Inside the command is simple, this is copied straight from the file.

  r <- getOption("repos")
  r["CRAN"] <- ""
  options(repos = r)

The local command prevents r from being set for every session.  You would replace the “” with the best mirror for your location.  The list of CRAN Mirrors is available on the main CRAN website.

To leave a comment for the author, please follow the link and comment on their blog: R Blog. 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


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)