Hello. I'm trying to count string data that correspond to a given condition in two factors of the same length.
For example, I have one factor [ 'A', 'B', 'A', 'C', 'B', 'D', 'B' ] and another is [ '1', '2', '2', '3', '2', '2', '3' ] I'd like to count the occurences of 'B' and '2' (so in my example, I should get 2 as an answer, since there are 2 'B' that correspond to '2' in the other factor). I tried doing it with loops (looping on one factor for 'B', looking for the corresponding value in the second factor, and incrementing a counter when the corresponding value is '2'), but I didn't succeed, and I know it's not the R-way. Any hint or direction? Thanks. -- Fabrice DELENTE ______________________________________________ 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.
