lmer formula syntax?

On Wed, Feb 2, 2011 at 4:55 PM, Douglas Bates <bates at stat.wisc.edu> wrote:

On Wed, Feb 2, 2011 at 3:43 PM, Colin Wahl <biowahl at gmail.com> wrote:

I too have found the Bate's book draft helpful, but I have not been able to
get the lme4a package installed. The best description I have found to do so
is:
http://kmyu.wordpress.com/2010/12/04/installing-lme4a-in-r-mac-osx-10-6-4/

I'm understanding that the lme4a package is dependent on a number of
packages: RcppArmadillo, minqa and MatrixModels (available on CRAN
respositories) and Rcpp version 0.8.8.1 or later (which is not; version
0.8.6 is).

(Actually it doesn't depend on RcppArmadillo).

You must be using Mac OS X.  If you check at
cran.r-project.org/web/packages/Rcpp you will see that the Windows
binary and the source code packages are at version 0.9.0 but the Mac
OS X version is only at 0.8.6, which is rather old.  I'm not sure what
the problem is as Romain develops on a Mac OS X system and he can't
reproduce the error.

However, you don't really need lme4a for most of the examples in the
book.  The lme4 package can't handle the profile-related material, but
the rest of the examples should be okay.  The output looks slightly
different but the parameter estimates should be essentially the same.

FYI, I just tried the current R-Forge version of lme4a using Rcpp 0.9.0
and there is a problem in the print function when the first argument x
is an image() call. This happens while trying the script Ch4.R.

I realize this is work in progress, and I tried to use lme4 first, but there
was a problem with that.

Is there a recommended snapshot/version set for minqa, MatrixModels,
lme4a, etc. that will run the chapter scripts?

Thanks,
Dominick