Hi, I have a vector who contents should look like this,
"c" "d" NULL "e" "f" etc or 4 5 6 NULL 7 8 9 how can I represent the null value? [[alternative HTML version deleted]] ______________________________________________ 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.