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alreadyhave
2015 Dec 01
1
Package Dependency
...udents are generally using Windows, but today I
reproduced the same on RedHat Linux with R-3.2.2.
desiredPackages is a big vector of packages to install. This is using
a trick that one of R Core taught me about 15 years ago...
> installedPackages <- rownames (installed.packages() )
> alreadyHave <- desiredPackages %in% installedPackages
> install.packages(desiredPackages[!alreadyHave],
+ dependencies = c("Depends"),
+ lib = TARGETLIB)
trying URL 'http://rweb.crmda.ku.edu/cran/src/...