Displaying 1 result from an estimated 1 matches for "cnm1".
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cnm
2003 Jun 25
3
joining columns as in a relational database
...hool, "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?
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"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)) {...