[Rd] na.action does not return na.action element of lm object
Prof Brian Ripley
ripley at stats.ox.ac.uk
Tue Aug 26 11:09:09 CEST 2008
Well, the na.action component (which may or may not be present in an lm
object) is *not* what na.action is documented to give:
The action which will be applied to 'object' whenever 'NA's are
So this needs some re-working, and it is not just "lm" objects that have
the na.action information as a component and not an attribute.
On Mon, 25 Aug 2008, Andrew Redd wrote:
> I'm not sure if this is the official behavior but I would expect the
> na.action function applied to a lm object to return the na.action.
> Here is what I mean.
> Warning message:
> In x + rnorm(10) :
> longer object length is not a multiple of shorter object length
>  "omit"
> I would expect na.action(m) to return m$na.action. This is simple
> enough to fix with
> but I would expect that this would already be included in the base.
> Is there a reason that it is not? I did a search through the archives
> but did not turn up anything relevant.
> Andrew Redd
> R-devel at r-project.org mailing list
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 272866 (PA)
Oxford OX1 3TG, UK Fax: +44 1865 272595
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