[R] Optim() package restriction

[ilai]

On Fri, Feb 24, 2012 at 12:18 PM, nserdar <snes1982 at hotmail.com> wrote:
> Hi
>
> I need a "phi" restriction in my code. That is   "0<phi<1 "
>
> How can I do that ?

> init.par<-c(1,1,1,1)
> estimate<- optim(init.par,Linn,gr=NULL,method= "BFGS", hessian=FALSE,control
> = list(trace=1))
>

You want method "L-BFGS-B" not "BFGS". See details in ?optim

Best


> Regards,
> res
>
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