Dear R Users! Thanks very much! I really don't know why the "scale" function didn't come to my mind when writing my silly question. But anyway thanks to all of you.
Yukihiro Ishii 2-3-28 Tsurumakiminami, Hadano, 250-0002 Japan +81463691922 ______________________________________________ R-help@r-project.org mailing list 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.
