On 09-03-2012, at 20:00, Michael wrote: > Hi all, > > In using "rlm" I've got a bunch of warnings... "failed to converge in 20 > steps", etc. > > My question is: > > what are the results then after the failure? >
They haven't converged. So inaccurate. Maybe your model is badly formulated or ill conditioned. > Will "rlm" automatically downgrade back to "lm" upon failure? > Help says nothing about that so most likely no. Why don't you try and raise maxit? Use maxit=40 in the call of rlm. And see what happens. Berend ______________________________________________ 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.
