[R] cluster function to use with GLM

[Prof Brian Ripley]

I am surprised: a Generalized Linear Model does not have clusters, nor 
did glm() allow clusters in any version of S-PLUS I have used.

I suspect this is a GEE model, for which see packages gee, geepack and 
yags (not on CRAN) under R.  But you can also have Generalized Linear 
Mixed Models, and there are several R packages to handle those.

On Sat, 31 Jan 2009, Veerappa Chetty wrote:

> Hi,In SPlus, I use the function 'cluster' with GLM to adjust for correlated
> errors within a cluster ( e.g. cluster(ID)) as a covariate. Is there a
> similar function in R to use with GLM ? I am new to R.  Thanks.
>
> V.K. Chetty
>
> -- 
> Professor of Family Medicine
> Boston University
> Tel: 617-414-6221, Fax:617-414-3345
> emails: chettyvk at gmail.com,vchetty at bu.edu
>
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-- 
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)
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