Question on mixed-effects modeling with R - lme4 package?

Shijie Lyu @Shijie_Lyu

07 July 2015 0 5K Report

When I use the lmer() function to analyze my data, the warning show up as below,

Warning messages:

1: In optwrap(optimizer, devfun, getStart(start, rho$lower, ... :

convergence code 3 from bobyqa: bobyqa -- a trust region step failed to reduce q

How to solve this? Thanks a lot.

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