From Thomas Lumley <thomas@biostat.washington.edu>  Sat Apr 18 19:28:04 1998
From: Thomas Lumley <thomas@biostat.washington.edu> (Thomas Lumley)
Date: Sat, 18 Apr 1998 11:28:04 -0700 (PDT)
Subject: RFC: large database interface
In-Reply-To: <Pine.LNX.3.96.980226163351.22796A-100000@alpha.fuzzy.at>
Message-ID: <Pine.LNX.3.96.980301144403.7917A-100000@buffy>


I have been playing with a large database interface for R, and have
written one complete but useless demonstration and one incomplete but
potentially useful example (with memory mapping of a fixed-format ASCII
file). The idea is to make the file appear like a matrix or data frame but
not have to read it into the R heap.

A description and code can be found at
http://www.biostat.washington.edu/~thomas/Rdb.html
                                          Rdb.nw  (noweb literate program)
                                          Rdb.c
                                          Rdb.R

Comments?

Thomas Lumley
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RFC: large database interface
Thomas Lumley