On Tue, 18 Nov 2003, Martin Wegmann wrote: > I have count data of animals (here y, y1, y2...) and env. variables (x, x1, > x2 ,....). > > I used a glm > > glm(y~x1+x2+x3....) > > glm(y1~x1+x2+x3....) > > and now I would like to add the count data of other species to investigate if > they might have a bigger impact than the env. variables: > > #x? are the selected var from the first glm run > > glm(y~x?+x?+y1) > > glm(y~x?+x?+x?+y2) > > .... > > I wonder if there is a more elegant method to do this than adding (and > removing) each y by hand.
Do you mean each x? In either case, see ?update. -- Brian D. Ripley, [EMAIL PROTECTED] Professor of Applied Statistics, http://www.stats.ox.ac.uk/~ripley/ University of Oxford, Tel: +44 1865 272861 (self) 1 South Parks Road, +44 1865 272866 (PA) Oxford OX1 3TG, UK Fax: +44 1865 272595 ______________________________________________ [EMAIL PROTECTED] mailing list https://www.stat.math.ethz.ch/mailman/listinfo/r-help
