Dear all,
I am
fitting  a hurdle model in the following way:
HNB <-
hurdle(chro ~ as.factor(TandemRepeat)| as.factor(TandemRepeat), data 
=data_negbin_fin,
dist = "negbin")
But the std.
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
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