On Fri, Oct 22, 2010 at 9:13 AM, Czerminski, Ryszard <ryszard.czermin...@astrazeneca.com> wrote: > I want to fit a linear model with fixed slope e.g. y = x + b > (instead of general: y = a*x + b)
> Is it possible to do with lm()? Yes. The simplest way is to fit lm(y - a*x ~ 1) which will give you the estimate of b, its standard error, etc. An alternative is to use an offset argument or an offset() expression in the model formula lm(y ~ 1 + offset(a*x)) ______________________________________________ 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.
