[R] Indexing on a variable that is a factor

From: Farrel Buchinsky <fjbuch_at_gmail.com>
Date: Sat 09 Sep 2006 - 17:01:51 GMT

It is easy to index on numeric variables. How does one index on a variable that is a factor?

Farrel Buchinsky, MD
Pediatric Otolaryngologist
Allegheny General Hospital
Pittsburgh, PA

R-help@stat.math.ethz.ch mailing list
PLEASE do read the posting guide http://www.R-project.org/posting-guide.html
and provide commented, minimal, self-contained, reproducible code.
Received on Sun Sep 10 03:06:32 2006

Archive maintained by Robert King, hosted by the discipline of statistics at the University of Newcastle, Australia.
Archive generated by hypermail 2.1.8, at Sat 09 Sep 2006 - 18:30:04 GMT.

Mailing list information is available at https://stat.ethz.ch/mailman/listinfo/r-help. Please read the posting guide before posting to the list.