Here are my current picks for best editors in R, where "best" means
- easy to install, and
- intuitive to use.
[For these editors, there might be versions for MacOS and Unix, but if you are going to run the programs from Doing Bayesian Data Analysis that call BRugs, then you'll need to run the 32-bit Windows version of R and (I presume) run the editor in Windows too. But if you don't use BRugs, and instead use JAGS with rjags, then you should get the version of the editor that is appropriate for your operating system.]
Available at http://www.rstudio.org/
2. Notepad++ with the add-on NppToR.
Get Notepadd++ from http://notepad-plus-plus.org/ and
get the NppToR add-on from http://sourceforge.net/projects/npptor/
Available at http://sciviews.org/Tinn-R/
Although mentioned in the textbook, Tinn-R does not install seamlessly for a lot of users.
Additional suggestions or comments about these editors are welcome.