On start-up R will look for the R-Profile in the following places:
(Information from https://csgillespie.github.io/efficientR/3-3-r-startup.html#rprofile)
- R_HOME: the directory in which R is installed.
Find out where your R_HOME is with the R.home() command.
- HOME, the user’s home directory. Can ask R where this is with, path.expand("~")
- R’s current working directory. This is reported by getwd().
Note although there maybe different R-Profile files R will only use one in a given session. The preference order is:
Current project>Home>R_Home
To create a project-specific start-up script create a .Rprofile file in the project’s root directory.
You can access and edit the different .Rprofile files via
file.edit(file.path("~", ".Rprofile")) # edit .Rprofile in HOME
file.edit(".Rprofile") # edit project specific .Rprofile
There is information about the options you can set via
help("Rprofile")
As mentioned the link above does provide additional details but the points outlined above should show you where the files are and how to access them.
