[R] Large data sets in R

Prof Brian Ripley ripley at stats.ox.ac.uk
Mon Oct 29 14:44:52 CET 2001

On Mon, 29 Oct 2001, Laura Gross wrote:

> As a new user of R, I'm wondering what the maximum matrix size is in R?
> I have a large data set consisting of 9000 people and want to be able to
> create large matrices involving these. Is R suitable for large data
> sets?

The answer depends on

1) Your platform
2) The amount of memory you have (especially of RAM)
3) What you want to do with 9000 cases, in particular how much information
you have on them.

As a general guide, I would say 9000 cases was not large for R on a
machine with say 256Mb RAM.  But a cluster analysis needing a
9000*9000 matrix would be too large.

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 272860 (secr)
Oxford OX1 3TG, UK                Fax:  +44 1865 272595

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