No, don't reach into the bVar slot. Use the proper extractor function ranef() with postVar=T. There is no similar function for lme()
> -----Original Message----- > From: [EMAIL PROTECTED] > [mailto:[EMAIL PROTECTED] On Behalf Of Rick Bilonick > Sent: Monday, November 12, 2007 4:40 PM > To: R Help > Subject: [R] Using lme (nlme) to find the conditional > variance of therandom effects > > Using lmer in the lme4 package, you can compute the > conditional variance-covariance matrix of the random effects > using the bVar slot: > > bVar: A list of the diagonal inner blocks (upper triangles > only) of the positive-definite matrices on the diagonal of > the inverse of ZtZ+Omega. > With the appropriate scale factor (and conversion to a > symmetric matrix) these are the conditional > variance-covariance matrices of the random effects. > > Is there anything similar in the nlme package using the lme function? > > Rick B. > > ______________________________________________ > R-help@r-project.org mailing list > https://stat.ethz.ch/mailman/listinfo/r-help > PLEASE do read the posting guide > http://www.R-project.org/posting-guide.html > and provide commented, minimal, self-contained, reproducible code. > ______________________________________________ R-help@r-project.org mailing list https://stat.ethz.ch/mailman/listinfo/r-help PLEASE do read the posting guide http://www.R-project.org/posting-guide.html and provide commented, minimal, self-contained, reproducible code.
