[R-sig-ME] variance function in lmer

Michael Li wuolong at gmail.com
Mon Jun 22 22:45:38 CEST 2009

Hi, lme() allows the use of variance function in the "weights" option.
 In lmer() the "weights" seems to expect actual weights rather than a
function (as in lm()).

Can variance functions be used in lmer()?



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