[R] Data File Size Problem

Prof Brian Ripley ripley at stats.ox.ac.uk
Fri Mar 31 10:27:55 CEST 2006

By at least some definitions, a `large file' is one over 2Gb, so yours is 
hardly `huge'.

I don't know what .dat format is (or, rather, I know many different 
definitions of it).  But your problem seems a small one 
for the current limits of 32-bit R for Windows, and on more capable 
platforms (e.g. 64-bit Unix or Linux) a tiny one.  Just make sure you have 
lots of RAM in your computer: R can make use of up to 3Gb (and the OS will 
want some, too).

On Fri, 31 Mar 2006, Sumanta Basak wrote:

> Hi R-Experts,
> I have a huge data file of size over 100MB, and this is in .dat format. Is
> it possible to work with this in the current version of R in Windows-XP
> machine? If not, please let me know the remedy of this. Can R handle large
> dataset like this? I know SAS is compatiable for this. But i want to try it
> in R.
> --
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Brian D. Ripley,                  ripley at stats.ox.ac.uk
Professor of Applied Statistics,  http://www.stats.ox.ac.uk/~ripley/
University of Oxford,             Tel:  +44 1865 272861 (self)
1 South Parks Road,                     +44 1865 272866 (PA)
Oxford OX1 3TG, UK                Fax:  +44 1865 272595

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