[R] lmer - error asMethod(object) : matrix is not symmetric
lgcarvalheiro at gmail.com
Tue Feb 16 11:20:26 CET 2010
I am having problems using package lme4.
I am trying to analyse the effect of a continuous variable (Dist_NV)
on a count data response variable (SR_SUN) using Poisson error
distribution. However, when I run the model:
summary(lmer((SR_SUN)~Dist_NV + (1|factor(Farm_code)) ,
1 error message and 1 warning message show up:
in asMethod(object) : matrix is not symmetric [1,2]
In addition: Warning message:
In mer_finalize(ans) : singular convergence (7)
A model including Dist_NV together with other variables runs with no problems.
What am I doing wrong?
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