If x is a vector (or data frame) that is in a particular order, and I call split(x, f) to partition x, will the elements of each partition remain in order?
That is, is the following assertion always TRUE? for(i in split(x, f)) { stopifnot(!is.unsorted(i)) } I suspect that this is the case, but the help page does not discuss preservation of order in the result of split(). ______________________________________________ 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.