sigalit mangut-leiba wrote: > I'm sorry for the unfocused questions, i'm new here... > the output should be: > class aps_mean > 1 na > 2 11.5 > 3 8 > > the mean aps of every class, when every id count *once*, for example: class > 2, mean= (11+12)/2=11.5 > hope it's clearer. > Much... Get the first record for each individual from (e.g.)
icul.redux <- subset(icul, !duplicated(id)) then use tapply as before using variables from icul.redux. Or in one go with( subset(icul, !duplicated(id)), tapply(aps, class, mean, na.rm=TRUE) ) -- 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 ~~~~~~~~~~ - ([EMAIL PROTECTED]) FAX: (+45) 35327907 ______________________________________________ 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 and provide commented, minimal, self-contained, reproducible code.
