[R] initial value for optim in polr question

adschai at optonline.net adschai at optonline.net
Sun Jun 10 22:35:20 CEST 2007


I have a problem with initial value for optim in polr that R report. After a call to polr, it complains that:

Error in optim(start, fmin, gmin, method="BFGS", hessian= Hess, ...) : initial value in 'vmin' is not finite.

Would you please suggest a way round to this problem? Thank you so much in advance.


- adschai

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