search for: cnm2

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2003 Jun 25
3
joining columns as in a relational database
..."School", which = "Sector") as examples Several questions: - Am I duplicating existing functionality? - Is cjoin a good name for such a function? - Would this be useful in base? -------------- next part -------------- "cjoin" <- function(fr1, fr2, cnm1, cnm2 = cnm1, which) { val = as.data.frame(fr1) vnms = names(val) cnm1 = as.character(cnm1) if (length(cnm1) < 1 || any(is.na(match(cnm1, vnms)))) { stop("cnm1 must be one or more column names from fr1") } fr2nm = names(fr2) if (!missing(cnm2)) { c...