[R] group means: split and unsplit

[Peter Dalgaard]

"Liaw, Andy" <andy_liaw at merck.com> writes:

> I didn't quite understand what you were looking for, but you may want to
> check out ave()...

...which is implemented as split-lapply-unsplit (OK, "split<-").
 
> Andy
> 
> > From: Thomas Davidoff
> > 
> > Took me a while but I figured out how to put in common values of  
> > group means/counts, etc. to do the same thing as egen.  lapply with  
> > split and then unsplit.

-- 
   O__  ---- Peter Dalgaard             Øster Farimagsgade 5, Entr.B
  c/ /'_ --- Dept. of Biostatistics     PO Box 2099, 1014 Cph. K
 (*) \(*) -- University of Copenhagen   Denmark          Ph: (+45) 35327918
~~~~~~~~~~ - (p.dalgaard at biostat.ku.dk)                  FAX: (+45) 35327907