Hi Laura, Off the top of my head I'd suggest something like this (assuming your data frames are named a and b)
a$ord <- 1:nrow(a) b$ord <- (1:nrow(b))*2 c <- rbind(a, b) c <- c[order(c$ord), ] ie. add a new column that has the desired ordering, then join the two data frames together, then reorder. (code not checked). Hadley ______________________________________________ [EMAIL PROTECTED] mailing list https://stat.ethz.ch/mailman/listinfo/r-help PLEASE do read the posting guide! http://www.R-project.org/posting-guide.html
