[R] Large data sets and aggregation

Jim Lemon bitwrit at ozemail.com.au
Wed Feb 2 13:26:35 CET 2000

I've noticed quite a few messages relating to large data sets bedeviling
R users, and having just had to program my way through one that actually
caused a "Bus error" when I tried to read it in, I'd like to ask two

1) Are there any facilities for aggregation of data in R?
( I admit that this will not do much for the large data set problem

2) Is there any interest out there for a C-based roll-your-own
aggregation program?

I've had to reduce over 150,000 records to just under 3000 for a
multi-record per case data file, and I might be able to generalize the
code enough to make it useful for others.


r-help mailing list -- Read http://www.ci.tuwien.ac.at/~hornik/R/R-FAQ.html
Send "info", "help", or "[un]subscribe"
(in the "body", not the subject !)  To: r-help-request at stat.math.ethz.ch

More information about the R-help mailing list