Hi R-people I have a question concerning subsetting. I have a dataframe which contains among other variables the variable "subject". For each subject number there are several rows, e.g.: subject treatment concentration day 19 a 15,4 1 19 a 18,3 2 19 a 2,3 3
etc. Im trying to subset the dataframe to get for example only the rows of subject 19 and subject 15. I tried this with nameofdataframe[nameofdataframe$subject==c(19,15),] This doesnt work as i get less rows than i should and a warning as well. How can i succeed doing this? Thanks a lot Gabi ______________________________________________ [EMAIL PROTECTED] mailing list https://www.stat.math.ethz.ch/mailman/listinfo/r-help