[R] Interaction between R and Perl

[b é line jesson]

Hello!

I'm calling R from Perl with Statistics-R perl module for a microarray
analysis integrated web tool.
I have some questions for a multi-users utilisation:
- Can I change the directory where R is running in order to have a directory
per user? Then no problem of erasing R data of an other user.
 
- If it's not possible, can I limite the number of users at the same time? I
see "lock", "is_blocked" and  "is_started" options in Statistics-R module.
How can I use them?

Thanks!

Béline