New column of data filled with the larger value from 2 columns
robgriffin247 <robgriffin247 <at> hotmail.com> writes:
Hi, I'm sure there is a pretty simple answer to this but I have had my head buried in the R book and on help pages for a while now and I've not made any progress. In simple terms: I have 2 columns of data, column A and column B. I want to create a new column (C) and fill it with the largest value from of A or B on each row.
sounds like you want data$C <- pmax(data$A,data$B) (or data <- transform(C,pmax(A,B)))