> > My modelmatrix is of dimension 28x4 > > Then I want to make use of the function predict because there > confidence.intervals are include. > > My idea was: > > mod <- lm(y~Worktime+Vacation+Illnes+Bankholidays) > > newdate=data.frame(x=c(324,123,0.9,0.1))
Perhaps you want to specify newdate like this newdate=data.frame(Worktime = 324, Vacation = 123, Illness = 0.9, Bankholidays = 0.1))? Best regards Frede Aakmann Tøgersen Scientist UNIVERSITY OF AARHUS Faculty of Agricultural Sciences Dept. of Genetics and Biotechnology Blichers Allé 20, P.O. BOX 50 DK-8830 Tjele Phone: +45 8999 1900 Direct: +45 8999 1878 E-mail: [EMAIL PROTECTED] Web: http://www.agrsci.org This email may contain information that is confidential. Any use or publication of this email without written permission from Faculty of Agricultural Sciences is not allowed. If you are not the intended recipient, please notify Faculty of Agricultural Sciences immediately and delete this email. ______________________________________________ R-help@stat.math.ethz.ch 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.