[R-sig-ME] Bug in weights in lmer

Nick Isaac njbisaac at googlemail.com
Thu Apr 24 11:12:18 CEST 2008

Could you try the same set of models using lmer2?

In July last year Sundar Dorai-Raj reported that the weights argument
was not being used in the CRAN version of lmer (lme4_0.99875-6).
Therefore, it's possible that you have actually observed the same
phenomenon in lme4_0.99875-9.

Sundar found that lmer2 did use weights, but it's not clear whether
the weighted model is correct. The development version of lmer
(lme4_0.999375-13) is much closer to the CRAN version of lmer2 than

See his original post at:


Best wishes, Nick

More information about the R-sig-mixed-models mailing list