Thanks to all for the replies. I tried all three and they work great. I was misinterpreting the list = parameter in save(...) and I get your point about overwriting existing objects. I've heard about not using assign/get before. Can anyone point me to why and what alternatives there are?

Regards

David

On 6/24/2014 2:50 PM, Henrik Bengtsson wrote:
I recommend to use saveRDS()/readRDS() instead.  More convenient and
avoids the risk that load() has of overwriting existing variables with
the same name.

/Henrik

On Tue, Jun 24, 2014 at 1:45 PM, Greg Snow <538...@gmail.com> wrote:
I think that you are looking for the `list` argument in `save`.

save( list=foo, file=paste0(foo, '.Rdata') )

In general it is best to avoid using the assign function (and get when
possible).  Usually there are better alternatives.

On Tue, Jun 24, 2014 at 2:35 PM, David Stevens <david.stev...@usu.edu> wrote:
R community,

Apologies if this has been answered. The concept I'm looking for is to
save() an object retrieved using get() for an object
that resulted from using assign. Something like

save(get(foo),file=paste(foo,'rData',sep=''))

where assign(foo,obj) creates an object named foo with the contents of obj
assigned. For example, if

x <- data.frame(v1=c(1,2,3,4),v2=c('1','2','3','4'))
foo = 'my.x'
assign(foo,x)
# (... then modify foo as needed)
save(get(foo),file=paste(foo,'.rData',sep=''))

# though this generates " in save(get(foo), file = paste(foo, ".rData", sep
= "")) :
object ‘get(foo)’ not found", whereas

get(foo)

at the command prompt yields the contents of my.x

There's a concept I'm missing here. Can anyone help?

Regards

David Stevens

--
David K Stevens, P.E., Ph.D.
Professor and Head, Environmental Engineering
Civil and Environmental Engineering
Utah Water Research Laboratory
8200 Old Main Hill
Logan, UT  84322-8200
435 797 3229 - voice
435 797 1363 - fax
david.stev...@usu.edu

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--
Gregory (Greg) L. Snow Ph.D.
538...@gmail.com

______________________________________________
R-help@r-project.org mailing list
https://stat.ethz.ch/mailman/listinfo/r-help
PLEASE do read the posting guide http://www.R-project.org/posting-guide.html
and provide commented, minimal, self-contained, reproducible code.

--
David K Stevens, P.E., Ph.D.
Professor and Head, Environmental Engineering
Civil and Environmental Engineering
Utah Water Research Laboratory
8200 Old Main Hill
Logan, UT  84322-8200
435 797 3229 - voice
435 797 1363 - fax
david.stev...@usu.edu

______________________________________________
R-help@r-project.org mailing list
https://stat.ethz.ch/mailman/listinfo/r-help
PLEASE do read the posting guide http://www.R-project.org/posting-guide.html
and provide commented, minimal, self-contained, reproducible code.

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