[R-sig-ME] extractor function for coefficient table from summary.mer ?

[Douglas Bates]

On Tue, Jun 2, 2009 at 8:23 PM, Ben Bolker <bolker at ufl.edu> wrote:

>  Request for comment: would it be reasonable to have the
> "coef" method for "summary.mer" objects return the table
> of parameter values, standard errors etc.?  This is parallel
> to what (e.g.) coef does for summary.lm objects (in that
> case by extracting the $coefficients element of the list) ...
> I feel I should minimize my using of direct slot extraction
> via @ ...

Very good idea thanks.  I will add it to the next release.

> library(lme4)
>
> setMethod("coef", signature(object = "summary.mer"), function(object)
> object at coefs)
>
> example(lmer)
> ss <- summary(gm1)
> coef(ss)
>
>              Estimate Std. Error   z value     Pr(>|z|)
> (Intercept) -1.3985351  0.2278906 -6.136871 8.416284e-10
> period2     -0.9923347  0.3053852 -3.249452 1.156274e-03
> period3     -1.1286754  0.3260491 -3.461673 5.368286e-04
> period4     -1.5803739  0.4288037 -3.685542 2.282169e-04
>
>
>
>
> --
> Ben Bolker
> Associate professor, Biology Dep't, Univ. of Florida
> bolker at ufl.edu / www.zoology.ufl.edu/bolker
> GPG key: www.zoology.ufl.edu/bolker/benbolker-publickey.asc
>
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