[R] load ing and saving R objects

[Gabor Grothendieck]

On 6/14/05, Richard Mott <rmott at well.ox.ac.uk> wrote:
> Does anyone know a way to do the following:
> 
> Save a large number of R objects to a file (like load() does) but then
> read back only a small named subset of them . As far as I can see,
> load() reads back everything.
> 
> The context is:
> 
> I have an application which will generate a large number of large
> matrices (approx 15000 matrices each of dimension 2000*30). I can
> generate these matrices using an R-package I wrote, but it requires a
> large amouint of memory and is slow so I want to do this only once.
> However, I then want to do some subsequent processing, comprising a very
> large number of runs in which small  (~ 10) random selection of matrices
> from the previously computed set are used for linear modeling.  So I
> need a way to load back named objects previously saved in a call to
> save(). I can;t see anyway of doing this. Any ideas?


Check out the g.data delayed data package on CRAN and the article 
in R News 2/3.