Hi, The within function can be used to modify data.frames (among other objects). One can even provide multiple expressions to modify the data.frame by more than one expression. However, when new variables are created, they seem to be inserted in the data.frame in the opposite order they were declared:
> df <- data.frame(a=1) > within(df, {b<-a*2; c<-b*3}) a c b 1 1 6 2 Is there a way to insert the variables in an order consistent with the order of declaration (ie, a, b, c)? Thanks Sebastien ______________________________________________ R-help@r-project.org mailing list -- To UNSUBSCRIBE and more, see https://stat.ethz.ch/mailman/listinfo/r-help PLEASE do read the posting guide http://www.R-project.org/posting-guide.html and provide commented, minimal, self-contained, reproducible code.