On Thu, May 31, 2018 at 03:30:42PM +1000, Jim Lemon wrote: > Because there are no values in column ddd less than 1.
Whoa! Thank you for pointing that out. ______________________________________________ R-help@r-project.org mailing list -- To UNSUBSCRIBE and more, see 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.
