Appendix H. Updating an R installation
As consumers, we take for granted that we can update a piece of software via a “Check for updates...” option. In chapter 1, I noted that the update.packages() function can be used to download and install the most recent version of a contributed package. Unfortunately, there’s no corresponding function for updating the R installation itself. If you want to update an R installation from version 4.1.0 to 5.1.1, you must get creative. (As I write this, the current version is actually 2.13.0, but I want this book to appear hip and current for years to come).
Downloading and installing the latest version of R from CRAN (http://cran.r-project.org/bin/) is relatively straightforward. The complicating factor is ...
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