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2012 Jul 15
0
NaN in hurdle model please?
...error for log(theta) = NA
Count model
coefficients (truncated negbin with log link):
Estimate Std. Error z value Pr(>|z|)
Log(theta) 13.5062 NA NA NA
And it
gives the following error:
In
sqrt(diag(vc_count)[kx + 1]) : NaNs
Can
somebody help me please.
Thanks so
much
Ana
--
Dr. Alain F. Zuur
First author of:
1. Analysing Ecological Data (2007).
Zuur, AF, Ieno, EN and Smith, GM. Springer. 680 p.
URL: www.springer.com/0-387-45967-7
2. Mixed effects models and extensions in ecology with R....