I have a very simple problem and am completely missing the solution. I have two character variables (character ID's from two datasets) Data set 'b' is data set 'a' with one more subject added. How do I find out which is the added subject?
I have tried duplicated and unique without much success. I can find all the duplicated ID's but how do I extract the new "unique" one? Example: a <- as.character(Cs(b,d,c,a)) b <- as.character( Cs(a,b,c,d,e)) h <- c(a,b) ; h h[duplicated(h)] I just want to extract that "e"! I had thought that h[!duplicated(h)] might work but it simply returns all the unique values whereas I simply want to simply find the odd man out. I thought of using sorting the vectors & using a cbind but the id's are assigned more or less randomly so that didn't work. Thanks ______________________________________________ R-help@stat.math.ethz.ch 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.
