[R] Extracting the dispersion parameter

[Uwe Ligges]

"Edward F. Connor" wrote:
> 
> I have been unsuccessful in extracting the dispersion parameter in SPLUS
> 6.1 using
> 
> summary or summary.glm(modelobj$dispersion)
> 
> from a glm object in which the family was set to quasi. This is the syntax
> given in the manual. I want to write a script to bootstrap the estimate of
> the dispersion parameter, but cannot seem to access that value.
> 
> Any suggestions?


summary() calculates it, hence it's part of the summary object:
 
  summary(modelobj)$dispersion


Uwe Ligges

> Thanks,
> 
> Ed
> 
> ----------
> 
> Edward F. Connor                                Office Phone    415-338-6997
> Department of Biology                           Lab Phone       415-338-3873
> San Francisco State University                  Fax             415-405-0306
> 1600 Holloway Avenue                            email:          efc at sfsu.edu
> San Francisco, CA 94132                 web: http://userwww.sfsu.edu/~efc
> 
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