Re: glm code bug (PR#224)

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Subject: Re: glm code bug (PR#224)
ripley@stats.ox.ac.uk
Date: Tue 13 Jul 1999 - 16:37:46 EST


Message-Id: <199907130637.IAA17100@pubhealth.ku.dk>

On Tue, 13 Jul 1999 Bill.Venables@cmis.csiro.au wrote:

> Peter,

[Peter only fixes most of the bugs....]

> There is a clear and simple bug in glm() that I have noticed in
> 0.64.2 (Windows and Unix) but may have been present in earlier
> versions.

It has a long history: the expand.dots = FALSE was introduced in 0.63,
but the second call has been wrong for longer.

> The two marked lines should clearly be
>
> call <- match.call()
>
> and
>
> mf <- match.call(expand.dots = FALSE)

as in S.

I've committed this for 0.65.0.

We have had various discussions about glm: it is proving very hard to
maintain (that is, find the bugs) and is irritatingly different from S.
One option is to reimplement it.

Brian

-- 
Brian D. Ripley,                  ripley@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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