I removed:
(setq inferior-R-program-name "C:\\Program  
Files\\R\\R-2.11.0-x64\\bin\\Rterm")

from my .emacs file. Then, I installed the 32-bit version of R-2.11.0.

Install directories are shown below. When I open a .r file and click ESS >  
start process > other > ..

... I see only the 32-bit version.


64-bt version installs in: C:\Program files\R\R-2.11.0-x64\bin\Rterm.exe

32-bit version installs by default in: C:\Program Files  
(x86)\R\R-2.11.0\bin\Rterm.exe

My system is 64-bit Windows 7 Ultimate. Installers run (as Administrator).

Thanks for thinking about this. --Dale


On Apr 23, 2010 10:53am, "RICHARD M. HEIBERGER" <rmh@temple.edu> wrote:

> On Fri, Apr 23, 2010 at 9:20 AM, Dale.W.Steele@gmail.com> wrote:

> FWIW, I installed the 32 bit binary of R-2.11.0 after removing the (setq  
> inferior-R-program-name "C:\\Program
> Files\\R\\R-2.11.0-x64\\bin\\Rterm") from my .emacs file. Emacs/ess finds  
> the 32-bit version of Rterm as before


> This is still puzzling.

> I need additional information. What is the full pathname of Rterm.exe in  
> both
> versions.
> You gave the full path for only the 64 bit version.

> Ideally, would like to be able to choose from 32-bit and 64-bit version  
> within emacs.

> Yes, of course, that is normal behavior. Let us see if it worked.

> Open a .r file. Then in the emacs menu line, click
> ESS > start process > other >
> What are the items in the "other" pull-out menu. If all works well, both

> the 32 and 64 bit R would be there. If you had not removed the 2.10.1, it  
> would
> also be there.

> By the way, the normal practice is not to remove an old R, certainly not  
> until you
> confirm the new one works. Each release intentionally has a different  
> name and

> it is anticipated that they will be installed in parallel.


> Thanks for any insights. --Dale

> Rich



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