[R] Quickie : unload library

[Prof Brian Ripley]

On Fri, 25 Aug 2006, Horace Tso wrote:

> Dear list,
> 
> I know it must be obvious and I did my homework. (In fact I've
> RSiteSearched with keyword "remove AND library" but got timed
> out.(why?)....)

Probably because the site is offline.

> How do I unload a library? I don't mean getting ride of it permanently
> but just to unload it for the time being.

Do you mean 'package' (see detach and unLoadNamespace) or 'library' (see
dyn.unload and library.dynam.unload)?

> A related problem : I have some libraries loaded at startup in .First()
> which I have in .Rprofile. Now, I exited R and commented out the lines
> in .First(). Next time I launch R the same libraries are loaded again.
> I.e. there seems to be a memory of the old .First() somewhere which
> refuses to die.

Are you restoring a workspace containing .First?  Always try with 
--vanilla to check.

-- 
Brian D. Ripley,                  ripley at stats.ox.ac.uk
Professor of Applied Statistics,  http://www.stats.ox.ac.uk/~ripley/
University of Oxford,             Tel:  +44 1865 272861 (self)
1 South Parks Road,                     +44 1865 272866 (PA)
Oxford OX1 3TG, UK                Fax:  +44 1865 272595