Hi, Thank you so much for the little example - this was exactly what i was looking for. Just i didn't know what to search after in R. I will change it for my data needs.
Thanks again, Monica ______________________________________________ [EMAIL PROTECTED] mailing list https://www.stat.math.ethz.ch/mailman/listinfo/r-help PLEASE do read the posting guide! http://www.R-project.org/posting-guide.html
