Many thanks for the help. I assumed that I would need to account for the variables in the model, even though I wish to assign a zero coefficient to them. I've looked at the offset function, but does this not just assign the value 1 to the variables? How would I specify a zero coefficient to more than one predictor in the glm model? Do I do this directly somehow i.e. y~I(X1)+offset(X2==0)+offset(X3==0)... ?
David -- View this message in context: http://r.789695.n4.nabble.com/Setting-constraints-in-the-glm-package-tp3013435p3014049.html Sent from the R help mailing list archive at Nabble.com. ______________________________________________ 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.
