[R] step function for glm()

[Prof Brian Ripley]

On Fri, 26 Oct 2001, Dr. Berthold Kramm wrote:

> is there a possibility using the step() function together with a glm()
> model, to force keeping some of the covariates in the model ?? and not
> having them dropped ??

Set a lower scope ... scope can be a list with components `upper' and
`lower'.

Looks to me like the documentation needs to be expanded: will do.

-- 
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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