Re: [R] glm cannot find valid starting values

From: Michael Dewey <info_at_aghmed.fsnet.co.uk>
Date: Mon 16 Oct 2006 - 19:34:28 GMT

At 16:12 15/10/2006, Ronaldo ReisJunior wrote:
>Em Sábado 14 Outubro 2006 11:15, Gabor Grothendieck escreveu:
> > Try using OLS starting values:
> >
> > glm(Y~X,family=gaussian(link=log), start = coef(lm(Y~X)))
> >
>
>Ok, using a starting value the model work.
>
>But, sometimes ago it work without any starting values. Why now I need a
>starting values?

Since this involves a prediction about how a computer will work in the future I would have thought the quote from Samuel Goldwyn in your .sig was helpful.

More seriously I think you need to give more detail about when it worked for those more expert than me to tell you what happened.

>Thanks
>Ronaldo
>--
>Nunca faça previsões, especialmente sobre o futuro.
> -- Samuel Goldwyn
>--
> > Prof. Ronaldo Reis Júnior
>| .''`. UNIMONTES/Depto. Biologia Geral/Lab. Ecologia Evolutiva
>| : :' : Campus Universitário Prof. Darcy Ribeiro, Vila Mauricéia
>| `. `'` CP: 126, CEP: 39401-089, Montes Claros - MG - Brasil
>| `- Fone: (38) 3229-8190 | chrysopa@gmail.com
>| ICQ#: 5692561 | LinuxUser#: 205366

Michael Dewey
http://www.aghmed.fsnet.co.uk



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