[R] non-finite initial optimization function; was "help"

[Prof J C Nash (U30A)]

If you want this resolved, you are going to have to provide the full 
function in a reproducible example. Nearly a half-century with this type 
of problem suggests a probability of nearly 1 that nlogL will be poorly 
set up.

JN

On 14-12-03 06:00 AM, r-help-request at r-project.org wrote:
> Message: 14
> Date: Tue, 2 Dec 2014 12:38:03 -0300
> From: Alejandra Chovar Vera<alejandra.chovar at gmail.com>
> To:r-help at r-project.org
> Subject: [R] help
> Message-ID:
> 	<CAGW2UaDZYafdcnVYZ82qkb127FxRa0RVuv9z3MdVU1bp7mUAYg at mail.gmail.com>
> Content-Type: text/plain; charset="UTF-8"
>
> Dear R
>
> I have a big problem in my estimation process,  I try to estimate my
> likelihood function with the option "optim", but R give me this message
> "Error en optim(par = valores$par, nlogL, method = "BFGS", hessian = T,  :
>
>    valor inicial en 'vmmin' no es finito " I know this is because my initial
> values are out the interval, but i try with different initial values and
> the problem persist.
>
> I don't know what can i do.
>
>
> I have this code, to obtain my initial values:
>
>
>   valores<-
> optim(c(-1,-1,1,1,1),nlogL,method="SANN",control=list(maxit=1000))
>
> DCp <-
> optim(par=valores$par,nlogL,method="BFGS",hessian=T,control=list(maxit=1000))
>
>
>
> I found in this link"http://es.listoso.com/r-help/2012-02/msg02395.html"
> something similar, but in this case there isn't answer.
>
>
> If you need more information about my code, please tell me.
>
>
> Sincerely
>
>
> Alejandra