I've had R installed for quite some time and I thought I'd give ESS a spin with it. Turns out, I just had to do this to get it working on Win 7.
(setq load-path (cons "c:/gnu/elisp/R/ESS/lisp" load-path))
(require 'ess-site)
(setq-default inferior-R-program-name "C:\\R\\R-2.15.1\\bin\\x64\\Rterm.exe")
(setq load-path (cons "c:/gnu/elisp/R/ESS/lisp" load-path))
(require 'ess-site)
(setq-default inferior-R-program-name "C:\\R\\R-2.15.1\\bin\\x64\\Rterm.exe")
And I could invoke R from Emacs and send code to the inferior process to execute. However, I do get the following messages which I'm not sure why it turns up.
Finding all versions of R on your system...
Sorry, no version of R could be found on your system.
Anyone know why it happens?