[R] how to get the variance-covariance matrix/information of alpha and beta after fitting a GLMs?

[Thomas Lumley]

On Thu, 12 Oct 2006, zhijie zhang wrote:

> Dear friends,
>  After fitting a generalized linear models ,i hope to get the variance of
> alpha,variance of  beta and their covariance, that is , the
> variance-covariance matrix/information of alpha and beta , suppose *B* is
> the object of GLMs, i use attributes(B) to look for the options ,but can't
> find it, anybody knows how to get it?

vcov(your.model)

 	-thomas

Thomas Lumley			Assoc. Professor, Biostatistics
tlumley at u.washington.edu	University of Washington, Seattle