On 09/12/2007, Frank E Harrell Jr <[EMAIL PROTECTED]> wrote: > Dieter Menne wrote: > ....
Thank you both! Best wishes, Mark -- Dr. Mark Wardle Specialist registrar, Neurology Cardiff, UK ______________________________________________ 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.