Command to see 'R' path that RStudio is using
(Edited to reflect fact that this is apparently a Windows-specific solution.)
Here on Windows, I'd use the following, for reasons discussed here by Henrik Bengtsson near the start of a long thread on the subject.
file.path(R.home("bin"), "R")This is better than using file.path(R.home(), "bin", "R") in several settings alluded to in the "Value" section of this snippet from help(R.home):
Details:
The R home directory is the top-level directory of the R installation being run.
[...]
Value:
A character string giving the R home directory or path to a particular component. Normally the components are all subdirectories of the R home directory, but this may not be the case in a Unix-like installation. [...] The return value for "modules" and on Windows "bin" is to a sub-architecture-specific location.