The first item in @ y.values is a NaN Slot "y.values": [[1]] [1] NaN 1.0000000
How do replace it with 1.000000 or otherwise get rid of it? Chet [[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.