Hi everyone, Is it possible to use tapply(x,y,mean) if not all groups of x by y are of the same length (for example if you have one missing observation)?
I tried tapply(x,y,mean,na.omit=T) but it doesn't work! Steffi -- --------------------------------- Stefanie von Felten Doktorandin ETH Zürich Institut für Pflanzenwissenschaften ETH Zentrum, LFW A 2 Telefon: 044 632 85 97 Telefax: 044 632 11 53 e-mail: [EMAIL PROTECTED] http://www.ipw.agrl.ethz.ch/~svfelten/ und: Universität Zürich Institut für Umweltwissenschaften Winterthurerstrasse 190 8057 Zürich Telefon: 044 635 61 23 Telefax: 044 635 57 11 e-mail: [EMAIL PROTECTED] http://www.unizh.ch/uwinst/homepages/steffi.html ______________________________________________ R-help@stat.math.ethz.ch mailing list https://stat.ethz.ch/mailman/listinfo/r-help PLEASE do read the posting guide! http://www.R-project.org/posting-guide.html
