On Jul 15, 2011, at 10:29 AM, Bhushan, Vipul wrote:
Hello. Is there a package or functionality available somewhere which
will allow for complex searches (such as what SQL can do) of
collections of RData files? Search capability within a given RData
file at a time (which could be put in a loop) would be good, but the
capability to perform joins to data across multiple RData files
would be great. These queries might be ad-hoc, so writing an R
program to get(load(...)) each file and customize the search in home-
grown R code isn't feasible.
As I read the question it appears that your are not expecting to load
the data into R and are rather asking for a program other than R (or
Rscript or littler) to read .Rdata files and perform database joins.
As I understand it, that is not available. As I understand it, there
is not even a package that can look at .Rdata files for their object
names and structure without actual loading them.
Hoping to be corrected on either of these points.
This shouldn't be dependent on environment details, but just in
case: I'm running version 2.13.0 in a Unix environment (but could
easily run in Windows too).
Thanks very much.
--
David Winsemius, MD
West Hartford, CT
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