> 2) I don't want to fit data with linear model of zero intercept. > 3) I dont know if I understand correctly. Im 100% sure the model for my data > should have zero intercept. > The only coordinate which Im 100% sure is correct. If I had measured quality > Y of a same sample X0 number of times I would get E(Y(X0))=0.
Are points 2) and 3) not contradictory? Hadley -- Assistant Professor / Dobelman Family Junior Chair Department of Statistics / Rice University http://had.co.nz/ ______________________________________________ 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.