Thank you! I have used the replicate function. In fact, I had just found the solution when I received your answers. Best regards, Rita
_____________________________________ Rita Gamito Centro de Oceanografia Faculdade de Ciências, Universidade de Lisboa Campo Grande, 1749-016 Lisboa, Portugal e-mail: rgam...@fc.ul.pt Tel: + 351 21 750 00 00 - ext. 22575 Fax: + 351 21 750 02 07 www.co.fc.ul.pt ______________________________________________ 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.
