Henrique Dallazuanna schrieb: > Hi, > A simple way is: > > s <- s[3]
but what if I don't know how many and which columns are NULL? Antje ______________________________________________ R-help@stat.math.ethz.ch 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.
