Hi, On Thursday, April 16, 2015, paul <paul.domas...@gmail.com> wrote:
> I'm ramping up on R, and reading > http://stuff.mit.edu/afs/sipb/project/r- > project/lib/R/library/base/html/Startup.html. > I'm probably wrong about this, but ~/.Rprofile seems to serve the same > purpose as a .First() function. Why do both exist, and what > considerations go into a decision to choose one over the other for > startup code? It's the timing and where the info comes from, as that document explains in great detail. .Rprofile is read on start-up unless R is specifically told to skip it. .First() is sourced after it's loaded, and thus must be loaded from somewhere such as an existing .RData file or a package. ~/.Rprofile is thus most convenient for things you want to have happen in every R session, while .First() is useful for specific sessions loaded from saved objects, or for constructing packages. Though on linux, I use a local .Rprofile if I need per-session options, because I often don't have a saved .RData file. Sarah -- Sarah Goslee http://www.stringpage.com http://www.sarahgoslee.com http://www.functionaldiversity.org [[alternative HTML version deleted]] ______________________________________________ R-help@r-project.org mailing list -- To UNSUBSCRIBE and more, see https://stat.ethz.ch/mailman/listinfo/r-help PLEASE do read the posting guide http://www.R-project.org/posting-guide.html and provide commented, minimal, self-contained, reproducible code.
