[R] R/S and large datasets - Database access (also Re: SAS and S/R)

[Duncan Temple Lang]

David James wrote:
> Other applications may include the ability to attach() any database
> to the search() path (together with the idea of proxy objects,
> it could be helpful in some cases);  

I hope to complete the testing of and commit the code that allows one
to attach arbitrary tables of name-value pairs that can be implemented
by either C or S in the next few days and in time for R 1.4.0. This
will allow one to treat external data as regular R variables and to
define different mechanisms for dealing with operations on those
variables. This is essentially a generalized proxy object setup that
can handle values from not only RDBMS tables, but also other processes
and languages (e.g. CORBA, Java, Perl, Python) and other formats such
as tar, zip, XML archives and so on.  We have used this to good effect
in both S4 and Omegahat.

I just thought I'd mention that this will be available for R in the near
future.

 D.

> -- 
> David A. James
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-- 
_______________________________________________________________

Duncan Temple Lang                duncan at research.bell-labs.com
Bell Labs, Lucent Technologies    office: (908)582-3217
700 Mountain Avenue, Room 2C-259  fax:    (908)582-3340
Murray Hill, NJ  07974-2070       
         http://cm.bell-labs.com/stat/duncan
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