On Apr 8, 2012, at 11:48 PM, Guaramy wrote:
Sorry but i didn't understand.
The path to understanding is through study and application of the advice in the Posting Guide.
-- David Winsemius, MD West Hartford, CT ______________________________________________ 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.