[R] glm

Prof Brian D Ripley ripley at stats.ox.ac.uk
Thu Nov 23 19:24:40 CET 2000

On Thu, 23 Nov 2000, Cesar Augusto de Freitas Anselmo wrote:

> Hello. How I get the weights matrix W after a glm fitted model? Thanks.

If you mean the IWLS matrix, it stored as a vector not a matrix, in
component `weights' of the fitted object.  If you mean the weights
specified e.g. for the binomial denominator, see `prior.weights'.
The function glm.fit should make this clean.

Brian D. Ripley,                  ripley at stats.ox.ac.uk
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 272860 (secr)
Oxford OX1 3TG, UK                Fax:  +44 1865 272595

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