A quick question for the gurus... Given:
a=c(58,73,100,40,70) b=c(40,70,73,100,58,70,70,58) How can I replace the elements of "b" with the corresponding index numbers from "a" that start at 1? All values in "a" are unique. So, I end up with: b=c(4,5,2,3,1,5,5,1) I believe I need to use one of the "apply" functions in combination with "which" but I cannot make it work. thank you, -david ______________________________________________ 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.
