[EMAIL PROTECTED] wrote: > Hi group! > > Suppose I have 2 matrices A and B of equal dimensions. > I want to apply a function f to all corresponding pairs of rows from A > and B in an efficient manner. > Basically, I want > > mapply(f, data.frame(A), data.frame(B)) > > but for rows. > > How do I do it? > >
Transpose them? Or, back to basics: sapply(1:nrow(A), function(i) f(A[i,],B[i,]) ) -- 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@r-project.org 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.
