Thanks for your answer but do you have a solution using the function ? I need to you use the data frame with a function (not the one given).
Thanks in advance again. Ptit Bleu. -- View this message in context: http://r.789695.n4.nabble.com/Still-confused-with-lapply-tp3050414p3050455.html Sent from the R help mailing list archive at Nabble.com. ______________________________________________ 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.