[R] Reset R to a vanilla state

Marc Schwartz marc_schwartz at me.com
Thu Dec 16 16:57:35 CET 2010

If you are using Emacs/ESS/org-mode etc., you may be better of posting to the ESS-Help list, where there are folks that I know of who are engaged in using org-mode for R coding and documentation. They may be able to offer some insights into their practices.

More info at:



Marc Schwartz

On Dec 16, 2010, at 9:49 AM, Holger Hoefling wrote:

> Hi,
> I am writing code in Emacs using org-mode and babel. I have a number of code
> blocks that are tangled into several files with some files spanning several
> code blocks. Each of these files is supposed to run independently of each
> other on a clean version of R, however I also want to be able to execute
> each code block during the org-mode development. This means
> a) I cannot use a new R session in every code block
> b) I cannot reuse the same R session for all code-blocks without cleaning it
> up
> c) Quitting and restarting R is not an option
> Thank you very much for your suggestions for cleaning the workspace. It is a
> partial solution, but doesn't guarantee a vanilla state (i.e. inadvertently
> changed options and the like). I was hoping for a base-package function that
> guarantees this functionality, but will probably use the ad-hoc version of
> cleaning the workspace and the packages only if no-one knows anything
> else....
> Thank you very much for your suggestions again.
> Best
> Holger
> On Thu, Dec 16, 2010 at 3:33 PM, Georg Ruß <research at georgruss.de> wrote:
>> On 16/12/10 15:12:47, Holger Hoefling wrote:
>>> Specifically I want all objects in the workspace removed
>> rm(list=ls()) should do this trick.
>>> and all non-base packages detached and unloaded
>> You may obtain the list of loaded packages via
>> (.packages())
>> Store this at the beginning of your session, get the diff to the loaded
>> packages at the end of the session and
>> detach(package:packagename) those packages.
>>> and preferably a .Rprofile executed as well
>> source(".Rprofile") ?
>> What's the circumstance that requires you to do this? I.e. why don't you
>> just restart R?
>> Regards,
>> Georg.

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