Thanks to Berend for his help with this. The problems seems to have been due to an environment that wasn't clean. I also gave x & y that were untransformed. But I am able to get results now.
Jeff ______________________________________________ [email protected] 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.
