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Unfortunately the question is closed, but I strongly think that the right answer is "nothing". Instead of using. Rprofile, I suggest keeping an initialization script at the top level of every project that gets invokes it at the beginning of every script in your project. That keeps your work reproducible across other users via source control. But, there are some brilliant answers here! I'll be putting some of these ideas in my own initialization script(s). – geneorama Jan 11 '14 at 5:32

@geneorama - Good comment but I would qualify your answer a little: The. Rprofile should not include any code that changes the results. What you can include is stuff that changes the appearance of R (e. g. options("width"=160) ) or the default CRAN mirror (e. g. options(repos = c(CRAN = "http://cran. rstudio. com")) ). Do not, however, load packages, change the default options of regularly used functions, define function etc. Your code should be self-contained and reproduce the results without your particular. Rprofile file. – user2503795 May 4 '14 at 12:18

@aaron-mcdaid First @user2503795 is absolutely right. Rprofile is an appropriate place to make application changes. Second, your question should be a separate SO question. I try to use a pattern similar to what we did in our food inspection project (see the code layout, and initialization steps at the top of each script). – geneorama Aug 28 '15 at 19:07

If you ever delete all objects in your global environment, then the aliases above will also be deleted. You can prevent that by hiding these in an environment. startup <- new. env() assign("h", utils::head, env=.startup) assign("n", base::names, env=.startup) assign("ht", function(d) rbind(head(d,6),tail(d,6)). env=.startup) assign("s", base::summary, env=.startup) attach(.startup) – Kevin Wright Apr 11 '12 at 13:40

/.Rprofile. designed for Mac and Linux.

These make errors easier to see.

I hate the CRAN menu choice, so set to a good one.

The following is for running on Mac OSX from the terminal (which I greatly prefer to R. app because it's more stable, and you can organize your work by directory; also make sure to get a good

/.inputrc ). By default, you get an X11 display, which doesn't look as nice; this instead gives a quartz display same as the GUI. The if statement is supposed to catch the case when you're running R from the terminal on Mac.

And preload a few libraries,

where util. r is a random bag of stuff I use, under flux.

Also, since other people were mentioning console width, here's how I do it.

This actually isn't in. Rprofile because you have to re-run it every time you resize the terminal window. I have it in util. r then I just source it as necessary.

@Keith assign them to an environment and attach the environment to the search path, then clean up. If the functions are in a separate file, you can source directly into the environment. See? new. env. assign and? sys. source. If you can't get it to work, post a new Q on SO and I'm sure you'll get Answers. – Gavin Simpson Mar 30 '11 at 12:17