Ben Bolker <bbolker <at> gmail.com> writes: >
PS this error message is listed in http://glmm.wikidot.com/faq -- if you google 'lmer "matrix is not symmetric"' it's in the hits (although pretty far from the top, alas). I've added a little bit more discussion. ______________________________________________ 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.