Displaying 1 result from an estimated 1 matches for "skugg".
2003 Jan 22
3
Error when using polr() in MASS
Dear all,
I get an error message when I use polr() in MASS. These are my data:
skugg grupp frekv
4 1 gr3 0
5 2 gr3 3
6 3 gr3 6
10 1 gr5 1
11 2 gr5 12
12 3 gr5 1
>
> summary(polr(skugg ~ grupp, weights=frekv, data= skugg.cpy1.dat))
Error in optim(start, fmin, gmin, method = "BFGS", hessian = Hess, ...) :...