search for: gnlspars

...NA NA NA NA NA NA NA NA NA ... $ Sun.t3 : num NA NA NA NA NA NA NA NA NA NA ... $ Fz.total.t3 : int NA NA NA NA NA NA NA NA NA NA ... I also tried with an AR(3) and an AR(1). The AR(3) gives the same error like above and the AR(1) gives the error: >> Error in optim(fn = function(gnlsPars) -logLik(gnlsSt, gnlsPars), par = c(coef(gnlsSt)), : >> initial value in vmmin is not finite >> In addition: There were 14 warnings (use warnings() to see them) Thanks for any help regards Bruno Tona

Hi, I am not sure this is a bug but I can repeat it, The functions and data are below. I know this is nasty data, and it is very questionable whether a 4pl model is appropriate, but it is data fed to an automated tool and I would have hoped for an error. Does this repeat for anyone else? My details: > version _ platform i686-pc-linux-gnu