R help - Jul 2006 - last 2 questions about save and load

i played around and i get the hang of save and load. I just
have two final questions :

1) is loading the RandomFields package the only
way to check if a file ( created through the save function )
is out there or not ? Because, I generally won't know if one has
been created yet or not.

2) Suppose, you have the case where you
created and saved a file. When you do an ls()
without loading that file, it doesn't show up in the list
obviously. So, if you want to delete that file for whatever
reason, is it possible ? Thanks.

                                           Mark

On Sat, 8 Jul 2006, markleeds at verizon.net wrote:
> i played around and i get the hang of save and load. I just
> have two final questions :
>
> 1) is loading the RandomFields package the only
> way to check if a file ( created through the save function )
> is out there or not ? Because, I generally won't know if one has
> been created yet or not.
Of course not: See ?file.exists and ?file.info.  (RandomFields::FileExists 
itself depends on file.exists and has a different purpose.)
> 2) Suppose, you have the case where you
> created and saved a file. When you do an ls()
> without loading that file, it doesn't show up in the list
> obviously. So, if you want to delete that file for whatever
> reason, is it possible ? Thanks.
ls() returns a list of (some) R objects: it has nothing to do with files.
Now save()d files contain images of R objects, but the name of the file 
has nothing to do with the names of the object(s) it contains.

-- 
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