Ulrich Leopold <[EMAIL PROTECTED]> writes: > Dear list, > > could someone point me to the right command to subtract 2 columns in a > data.frame. Might be a bit embarrassing question. But I cannot figure > out how to do this simple command in R.
E.g., mydata$difference <- mydata$x - mydata$y -- O__ ---- Peter Dalgaard Blegdamsvej 3 c/ /'_ --- Dept. of Biostatistics 2200 Cph. N (*) \(*) -- University of Copenhagen Denmark Ph: (+45) 35327918 ~~~~~~~~~~ - ([EMAIL PROTECTED]) FAX: (+45) 35327907 ______________________________________________ [EMAIL PROTECTED] mailing list https://www.stat.math.ethz.ch/mailman/listinfo/r-help
