Thanks to some comments from Brian D. Ripley, I found my error: I should not have given a data argument to lm() after creating a formula-object. This obviously confused things...
Thanks again, I've really learnt again a bit more on R-programming... Cheers, Winfried --------------------------------------------------------------------- E-Mail: Winfried Theis <[EMAIL PROTECTED]> Date: 29-Jan-03 Dipl.-Math. Winfried Theis SFB 475, Fachbereich Statistik, Universit"at Dortmund, 44221 Dortmund Tel.: +49-231-755-5903 FAX: +49-231-755-4387 ---------------------------------------------------------------------- ______________________________________________ [EMAIL PROTECTED] mailing list http://www.stat.math.ethz.ch/mailman/listinfo/r-help
