> hello
>
> I've tried to simulate a normal law, like that :
>
> X1 = c(rnorm(90,50,5583),rnorm(160,1198,13034597),rnorm(40,13,125))
>
>
> then, I've regressed my ordinal polytomic variable "rating"
rating=c(rep(2,90),rep(3,160), rep(4,40))
rating = as.factor(rating)
rating = as.ordered(rating)
(ratins is an ordered factor)
on the continuous variable X1 like that
> library(MASS)
> test2 = polr(rating ~ X1, method = c("probit"))
> summary(test2)
>
>
> but R indicates me the following error whereas X does not have infinite
> or missing values?
>
>
> Re-fitting to get Hessian
> Error in svd(X) : infinite or missing values in x
>
> THANKS
> good by
abdelhafid berrichi
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