On 23-04-2012, at 21:37, phillip03 wrote: > Thank you! > > Do you know why ifelse() sometimes returns "NULL" ?
Please provide a reproducible example for this phenomenon. Berend ______________________________________________ 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.
