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Is there a simple way to get a list of R package dependencies (all recursive dependencies) for a given package, without installing the package and it's dependencies? Something similar to a fake install in portupgrade or apt.
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You only need to install packages the first time you use R (or after updating to a new version). **R Tip:** You can just type this into the command line of R to install each package. Once a package is installed, you don't have to install it again while using the version of R!
To see what packages are installed, use the installed. packages() command. This will return a matrix with a row for each package that has been installed.
You can use the result of the available.packages function. For example, to see what ggplot2 depends on :
pack <- available.packages() pack["ggplot2","Depends"] Which gives :
[1] "R (>= 2.14), stats, methods" Note that depending on what you want to achieve, you may need to check the Imports field, too.
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