[R-sig-ME] Undefined R-structure MCMCglmm
Christopher David Desjardins
desja004 at umn.edu
Mon Jul 20 00:38:49 CEST 2009
Hi,
I am getting the following error when fitting a zip model in MCMCglmm.
> fit1 <- MCMCglmm(sus ~ 1 + ethnic + sped + ell + risk + male + grade,
random=~id.f, data=enroll.long.m, verbose=TRUE, DIC=TRUE,
family="zipoisson") # Random intercept only model
Error in MCMCglmm(sus ~ 1 + ethnic + sped + ell + risk + male + grade, :
R-structure does not define unique residual for each data point
I was able to run fit a poisson model but my data is zero-inflated.
Thanks,
Chris
--
Christopher David Desjardins
Ph.D. Student
Quantitative Methods in Education
Department of Educational Psychology
University of Minnesota
http://cddesjardins.wordpress.com/
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