Re: [R] restrictions for attribute access <Watchdog: Virus checked>

From: Benjamin Polak <benjamin.polak_at_unisg.ch>
Date: Wed, 02 Apr 2008 14:36:27 +0200

Thanks, but it doesn't work, I get the error message:

'no slot of name "AICtab" for this object of class "table"'

On Wednesday, 2. April 2008 13:34, Henrique Dallazuanna wrote:
> You've tried:
>
> tab <- smry_at_AICtab
>
> ?
>
> On Wed, Apr 2, 2008 at 7:59 AM, Benjamin Polak
<benjamin.polak_at_unisg.ch> wrote:
> > Hello everybody,
> >
> > I have a problem with accessing class attributes. I think it
> > might be due to namespace access restrictions or something
> > similar, but I'm unable to figure it out, maybe someone knows the
> > trick how to do it ...
> >
> > I'm trying to extract some information from the summary object
> > for a model fitted using the lmer function from the lme4 package:
> >
> > smry <- summary(lmer(foo ~ bar ...))
> > tab <- attr(smry, "AICtab")
> > tab$AIC
> >
> > When I run this code as a regular R script everything works
> > fine, tab$AIC has the desired value. But when I try to run this
> > code from within a package I wrote, tab$AIC is NULL.
> >
> > I've tried adding "import(lme4)", "importClassesFrom(lme4)"
> > and "importMethodsFrom(lme4)" into the NAMESPACE file of my
> > package, but it didn't help, tab$AIC is still NULL.
> >
> > Thanks for any kind of hint!
> >
> > Best Regards,
> > Ben



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