[ESS] Telling ess where to look for R

[Thompson,Paul]

This illustrates a problem or difficulty I have with emacs. You have a nice example of customization. 

Looking at the ess.pdf manual which I find installed as part of ESS V 12.09-1, installed via the V Goulet mod of emacs, I look at the TOC. I find that P. 93 discusses "Customizing ESS". It states to find customization you type M-x customize-group ret ess. I access a file which invokes ess (a SAS source) and do this, which brings up the various customize dialogs. I looked for R, and find it as a dialect of S.

However I do not find the specific code ess-directory-containing-R in any place. How is a non-developer to find these variables?

This is not your problem. This is a problem that I have with emacs generally. There are few good complete listings of variables. It's all passed word of mouth from one person to another.

-----Original Message-----
From: ess-help-bounces at r-project.org [mailto:ess-help-bounces at r-project.org] On Behalf Of Rodney Sparapani
Sent: Tuesday, January 22, 2013 10:26 AM
To: Kevin R. Coombes
Cc: Richard M. Heiberger; ess-help at r-project.org
Subject: Re: [ESS] Telling ess where to look for R

On 01/22/2013 10:08 AM, Kevin R. Coombes wrote:
> My .emacs file contains the following two lines:
>      (setq ess-directory-containing-R "C:")
>      (require 'ess-site)
>
> This works to find versions of R stored in C:\R\R-2.15.1, etc.  On my 
> machine, it does NOT work if you interchange the order of the two lines.
> After the ess-site code is loaded, something has already been set that 
> does not get changed when you set the ess-directory-containing-R variable.
>
>    -- Kevin

That's correct; and that's how I usually set ESS variables myself.
But, since there are almost always options when dealing with emacs, you can also use the customize facility to set 'ess-directory-containing-R.  The down side of customize is that some ESS variables can not be customized.

--
Rodney Sparapani, PhD  Center for Patient Care and Outcomes Research
Sr. Biostatistician               http://www.mcw.edu/pcor
4 wheels good, 2 wheels better!   Medical College of Wisconsin (MCW)
WWLD?:  What Would Lombardi Do?   Milwaukee, WI, USA

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