[R-sig-ME] Extracting Information from nlme ( )

Ben Bolker bbolker at gmail.com
Fri Feb 18 22:40:21 CET 2011

On 02/18/2011 04:13 PM, Jeffrey Harring wrote:
> Question...
> Is there a function or nlme object that allows one to extract the
> standard errors of the variance/covariance parameters within nlme ( ).
> For example, I would like to extract the SE's for the
> variance/covariance matrix of the random effects (which is a 2 by 2). I
> can get the actual parameters, but I am having difficulty extracting
> these parameters SE's.
> Any suggestions would be welcomed.
> Thank you,
> Jeff

  me again ...


 You can also extract the raw information via

 In his current incarnation, Doug Bates would tell you that the sampling
distributions of the variance-covariance parameters are so non-Gaussian
that basing inferences on their approximate standard errors is dangerous.

    Ben Bolker

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