I have been looking at a draft of Doug Bate's book on mixed effects models
(http://lme4.r-forge.r-project.org/book), and in chapter one (section "1.4.2
Matrices and Vectors in the Fitted Model Object", to be exact) he refers to the
function env() for checking the environment of a fitted lmer object. This
function does not appear under help, and I have not been able to find
information on it elsewhere. Can someone tell where this function comes from? By
the way, it is not defined in the R-code that accompanies chapter one of Bate's
book either.
Similar observations appear to apply to the function profile().
Are these functions that will appear in a new version of the lme4 library, that
has not yet been released?
Thank you!
Michael Jerosch-Herold
Brigham & Women's Hospital
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