Message-ID: <20020222094548.L4457@sellwood.reed.edu>
Date: 2002-02-22T17:45:48Z
From: Albyn Jones
Subject: storing large data.frame's
In-Reply-To: <36D2483A-277E-11D6-9EE3-0003930EA956@gmx.net>; from meinhardploner@gmx.net on Fri, Feb 22, 2002 at 11:23:29AM +0100
On Fri, Feb 22, 2002 at 11:23:29AM +0100, Meinhard Ploner wrote:
> I am new on R, so I have a maybe naive question:
>
> if I have many large data.frames and I use only one or two per session,
> what's the best way?
> If all are stored in the actual .Rdata, the system gets slow.
> On the other hand, I wouldn't like to make a separate package for the
> data.
Take a look at the package "g.data" at your local CRAN:
g.data: Delayed-Data Packages
Create and maintain delayed-data packages (DDP's). Data
stored in a DDP are available on demand, but do not take up
memory until requested. You attach a DDP with
g.data.attach(), then read from it and assign to it in a manner
similar to S-Plus, except that you must run g.data.save() to
actually commit to disk.
Version:
1.2
Date:
2001-11-30
Author:
David Brahm <brahm at alum.mit.edu>
--
--------------------------------------------------------------
http://www.reed.edu/~jones Albyn Jones jones at reed.edu
Reed College, Portland OR 97202 (503)-771-1112 x7418
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