Dear all,
I got this message, while using the polr function in MASS
>EQ<-as.formula("dep~fpta+tcdv+cdta+cmta+prcd+patc+lactifs+excta")
> Estim<-polr(EQ,don, subset=(cote!=0),method="probit",na.action=na.omit)
Error in polr(EQ, don, subset = (cote != 0), method = "probit", na.action =
na.omit) :
attempt for find suitable starting values failed
In addition: Warning messages:
1: algorithm did not converge in: glm.fit(X, y1, wt, family =
binomial("probit"), offset = offset)
2: fitted probabilities numerically 0 or 1 occurred in: glm.fit(X, y1, wt,
family = binomial("probit"), offset = offset)
how can I initialise starting values ?
Justin BEM
Elève Ingénieur Statisticien Economiste
BP 294 Yaoundé.
Tél (00237)9597295.
___________________________________________________________________________
Découvrez une nouvelle façon d'obtenir des réponses à toutes vos questions !
Profitez des connaissances, des opinions et des expériences des internautes sur
Yahoo! Questions/Réponses
[[alternative HTML version deleted]]
______________________________________________
R-help@stat.math.ethz.ch mailing list
https://stat.ethz.ch/mailman/listinfo/r-help
PLEASE do read the posting guide http://www.R-project.org/posting-guide.html
and provide commented, minimal, self-contained, reproducible code.
