Hi, I have a dataset with many variables and observations. The variable Group has two levels: C and P, the Month variable has four levels: 0, 1, 2 and 3.
I want to extract a subset of the variable Weight, considering only 1 and 3 levels for Months of the Group variable.
I tried the command subset but it did not work. Any suggestions?
Thanks, -------------------------------------- Silvano Cesar da Costa Departamento de EstatÃstica Universidade Estadual de Londrina Fone: 3371-4346 ______________________________________________ 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.