Hello,
I'm getting an error message when I use the ordered probit model
"oprobit" in the zelig function. Using the same form as in the help
file, we get an error message. It produces coefficients, but no
standard errors. See results below. Any hints?
Thanks!
>
> o.probit <- zelig(as.factor(checks.change) ~ Oda + Oil + sh_neg +
sh_pos + checks1, model="oprobit", data=data.all)
> summary(o.probit)
Error in svd(X) : infinite or missing values in 'x'
> o.probit$coefficients
Oda Oil sh_neg sh_pos checks1
2.858e-02 1.978e-07 -1.961e-02 4.810e-02 8.492e-02
>
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