On Mon, 10 May 2004, Christophe Pallier wrote: > > The use of tapply(x,f,mean)[match(f,unique(f))] assumes a particular > order in the result of tapply, no? It seems a bit dangerous to me. >
My original code for the group means problem used rowsum(,reorder=FALSE) rather than tapply(), and we do know that this produces the same order as unique(). -thomas ______________________________________________ [EMAIL PROTECTED] mailing list https://www.stat.math.ethz.ch/mailman/listinfo/r-help PLEASE do read the posting guide! http://www.R-project.org/posting-guide.html