Hello, I have a data frame with 2 columns: year and code. In code column, I want to replace elements that are not "8210", "8310", or "9190" with "others".
-- Sincerely, Yosub Jung. [[alternative HTML version deleted]] ______________________________________________ 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.