I'm struggling a bit with R with understanding functions and what's going on under the hood.
For example, I was given this snippet of code via this mailing list: DF <- data.frame(A =c("A", "A", "A", "B", "C"), B=c(1,1,2,2,0)) g <- paste(DF$A, DF$B) s <- split(DF, g) split appears to be taken the string provided by paste, e.g. "A 1", and then deciding that the first character "A" in this string relates to DF$A, and the second character "1" to DF$B. The split help pages don't really tell me why split is working like this - maybe I'm just looking in the wrong place in the help page. I've got plenty of books on R, but only one of them gives a bit of info on the use of split - not in enough detail though. Does the book referenced in the help pages ("The New S Language") give more insight into this and other functions? Will I just get an Aha! moment with R after using it for a while? Thanks in advance... Chris ______________________________________________ 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.