Who said that an offset can be an array in glm? (It can be in other contexts).
On Tue, 9 May 2006, Mark Clements wrote: >> From posts in Sep 2004 and Feb 2005, glm() was raising "Error in x[good, ] * >> w : non-conformable arrays". I can reproduce this error using: Neither of those were using an offset, and the second was using a home-brewed family. I guess the issue was with the weights. > df1 = data.frame(u=1:10, > v=rpois(10,10), > z=array(1,10,dimnames=list(1:10))) > glm(v~u+offset(log(z)), data=df1, family=poisson) > > -- which seems to be due to the variable z have dimnames. Rather, having a dim. In glm.fit(), the error is traced to some weight vector w having class "numeric" on the first iteration and class "array" on the second iteration. Would this problem be solved by changing "x[good, ] * w" in glm.fit() to "x[good, ] * as.numeric(w)"? That's not the place to fix it, and you want as.vector() or drop() rather than as.numeric. It would be more informative to check that the offset(s) are vectors and numeric. > > With kind regards, Mark Clements. > > https://stat.ethz.ch/pipermail/r-help/2005-February/066784.html > https://stat.ethz.ch/pipermail/r-help/2004-September/057888.html > > ______________________________________________ > [email protected] mailing list > https://stat.ethz.ch/mailman/listinfo/r-help > PLEASE do read the posting guide! http://www.R-project.org/posting-guide.html > -- 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://stat.ethz.ch/mailman/listinfo/r-help PLEASE do read the posting guide! http://www.R-project.org/posting-guide.html
