ONKELINX, Thierry <Thierry.ONKELINX <at> inbo.be> writes: > With t*treat the model allows for a different slope AND a different > intercept for each treatment. If you only want different slopes and all > intercepts equal to 0, then t:treat - 1 or t + t:treat - 1 is the model > you are looking for.
Thanks Thierry and Christian, I knew it was something stupid. Dieter ______________________________________________ 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.