Hi Matt, maybe the library() command would solve your problem.
However, I take this opportunity to ask an other question related to installed packages: some packages are installed because I install.package'd them; however, I usually add the dep = TRUE option, so that some other packages are installed because of the dependencies. Once installed, I do not know of any way to distinguish the former from the latter; is there one? Now, moving my R installation to a new machine, I would like to re-install only those packages I installed by install.package(), with the dep = TRUE option. I feel, and fear, that if I install all the packages returned by library() with dep =TRUE option, packages that depend on those installed because they depend on those I installed by giving their name to install.package() will also be installed.
Now, my workaround is to keep the history of the install.package() command I invoked. Defining a function that does the same thing as install.packages(), while logging the information in some file does the thing.
Hope that helps, Philippe On 29/06/2011 19:48, Matt Curcio wrote:
Greetings All, I would like to find out which R packages I have on my machine and transfer that set of packages to a new machine. I have investigated the command 'installed.packages' and got a partial list but this is not comprehensive. (!?!) The partial list does not include the libraries that I do not normally load on start-up. Any suggestions? Conversely, once I have found the complete list can I use 'install.package' to batch install all the packages to another computer? Cheers, M
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