R and SSH / exchange R objects between client and server

Hi Martin,
In addition to what Duncan writes: I think winscp does exactly what you
want. You can copy objects from/to linux, but also edit files from linux on
the winduts machine without explicitly copying (of course you do copy the
file, but is done automatically).
Bye
Frans

-------------------
dr F.H.G. (Frans) Marcelissen
fransiepansiekevertje at hotmail.com

-----Oorspronkelijk bericht-----
Van: r-help-bounces at r-project.org [mailto:r-help-bounces at r-project.org]
Namens Duncan Murdoch
Verzonden: dinsdag 1 januari 2013 21:39
Aan: Martin Batholdy
CC: r-help at r-project.org
Onderwerp: Re: [R] R and SSH / exchange R objects between client and server

Hi,

I have a laptop (Mac OS) and a remote PC (Ubuntu) and would like to do the

heavy work on the remote machine but control it via the laptop.

I managed to install ssh server and can now remotely connect to my PC via

ssh and can start an R session in the terminal.

However, I still don't quite understand how I can now "exchange" R

objects.

I have the raw data I want to read and analyse on my laptop.
So I need to read the files on the laptop and 'send' the r object to the

remote PC.

The remote PC should then do the heavy calculations and send back the

result data frames, so that I can export/save the result tables on my
laptop.

Is this even possible with ssh (send R objects from client to server and

vice versa)?

Use save() and load() to create and read binary files containing the objects
you want to exchange.  Use scp to move them between systems. 
(Or sftp, or something else to move files.)

Are there R packages who help to establish ssh connections?

Not that I know of.  You just use the command line utilities via
system() or shell().

Can I also connect to the server via the R gui?

Not with base R.  There are some front ends written by others that do this,
e.g. RStudio.

Duncan Murdoch

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