Thanks Kent and Petr, the problem was indeed the "C"/missing value that I had to convert!
Thanks Peter too, the "factor" explanation will also be quite usefull for further work. Best regards, Thibault On 11 April 2011 03:48, Rolf Turner <rolf.tur...@xtra.co.nz> wrote: > On 11/04/11 10:08, Peter Ehlers wrote: > > <SNIP> > > "Checking" anything with Excel is never much use. >> > > <SNIP> > > Fortune? > > cheers, > > Rolf Turner > > > ______________________________________________ > 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. > [[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.
