I think you mean 'shape parameter'. If so, see the MASS package and ?gamma.shape.
glm() _is_ providing you with the MLE of the scale parameter, but really no estimate of the shape (although summary.glm makes use of one). On Tue, 6 Feb 2007, WILLIE, JILL wrote: > I would like the option to specify alternative scale parameters when > using the gamma family, log link glm. In particular I would like the > option to specify any of the following: > > 1. maximum likelihood estimate > 2. moment estimator/Pearson's > 3. total deviance estimator > > Is this easy? Possible? > > In addition, I would like to know what estimation process (maximum > likelihood?) R is using to estimate the parameter if somebody knows that > off the top of their head or can point me to something to read? > > I did read the help & search the archives but I'm a bit confused trying > to reconcile the terminology I'm used to w/R terminology as we're > transitioning to R, so if I missed an obvious way to do this, or stated > this question in a way that's incomprehensible, my apologies. > > Jill Willie > Open Seas > Safeco Insurance > [EMAIL PROTECTED] > > ______________________________________________ > [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 > and provide commented, minimal, self-contained, reproducible code. > -- 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 and provide commented, minimal, self-contained, reproducible code.
