search for: redc1

...e with 130 rows Below is the code that I have started with. Ideally I would like to identify the actual row numbers where there is difference in the variables (either pairwise or between 3 variables). x <- read.csv("c://rec_compare.csv",header=T, as.is=TRUE) u <- union(x$rm1, x$redc1) write.csv(u,"c:/union_test.csv") i <- intersect(x$rm1, x$redc1) write.csv(i,"c:/intersect_test.csv") sd <- setdiff(x$rm1, x$redc1) write.csv(sd,"c:/setdiff_test.csv") Any suggestions are appreciated. regards Bob