List of user-installed R packages and their versions

June 9, 2015

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

This R command lists all the packages installed by the user (ignoring packages that come with R such as base and foreign) and the package versions.

ip <-[,c(1,3:4)])
rownames(ip) <- NULL
ip <- ip[$Priority),1:2,drop=FALSE]
print(ip, row.names=FALSE)

Example output

Package Version
bitops 1.0-6
BradleyTerry2 1.0-6
brew 1.0-6
brglm 0.5-9
car 2.0-25
caret 6.0-47
coin 1.0-24
colorspace 1.2-6
crayon 1.2.1
devtools 1.8.0
dichromat 2.0-0
digest 0.6.8
earth 4.4.0
evaluate 0.7

Tested with R 3.2.0.

This is a small step towards managing package versions: for a better solution, see the checkpoint package. You could also use the first column to reinstall user-installed R packages after an R upgrade.

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