Barry Rowlingson wrote:
On Sun, Apr 18, 2010 at 11:30 PM, kMan <kchambe...@gmail.com> wrote:
It was my understanding that .Rdata files were not very portable, and do not
natively handle queries. Otherwise we'd all just use .RData files instead of
farming the work out to SQL drivers & external libraries, and colleagues who
use, e.g. SAS or SPSS would also have no trouble with them.
The "platform" in "cross-platform" to me generally means the
operating system on which a program is running - and .Rdata files are
perfectly portable between R on Linux, MacOSX, Windows, Solaris etc
versions. You didn't mention portability to other statistical
packages. You also didn't mention needing SQL, or what you wanted to
do with your databases. I figured I'd just mention .Rdata files for
completeness!
There's also RJDBC and RODBC which can interface to anything with a
JDBC or ODBC interface on your system.
A .RData file could be considered as a serverless NoSQL database.
There's a GSOC proposal to investigate interfaces to NoSQL databases
and some info here:
http://rwiki.sciviews.org/doku.php?id=developers:projects:gsoc2010:nosql_interface
Isn't it odd that the open-source R community has developed functions
for reading in proprietary SAS and SPSS format files, but (AFAIK) the
commercial sector doesn't seem to support reading data from
open-sourced and open-specced R .Rdata files?
Barry
Hi Barry,
Stat Transfer can read and write R binary data frames (.rda files).
Frank
--
Frank E Harrell Jr Professor and Chairman School of Medicine
Department of Biostatistics Vanderbilt University
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