Re: [R] zeroinfl problem: cannot get standard errors, hessian has NaN

Thank you, Achim! Rescaling worked and all is fine now! -- View this message in context: http://r.789695.n4.nabble.com/zeroinfl-problem-cannot-get-standard-errors-hessian-has-NaN-tp4637715p4637732.html Sent from the R help mailing list archive at Nabble.com. _

[R] zeroinfl problem: cannot get standard errors, hessian has NaN

Hi! I have three models. In the first model, everything is fine. However, in the second and third models, I have NA's for standard errors: The hessians also have NaN's (same for m2 and m3). What should I do about it? It there a way to obtain the hessian without transforming my vari