[R] Optimzing a nested function

[Duncan Murdoch]

On 11-04-12 2:33 AM, vioravis wrote:
> I am trying to optimize a nested function using nlminb. This throws out an
> error that y is missing. Can someone help me with the correct syntax?? Thank
> you.

See ?nlminb.  The parameters to optimize should be given as a vector in 
a single parameter.  Other parameters are kept fixed through the 
optimization, and need to be passed in the nlminb call.

Duncan Murdoch

>
> test1<- function(x,y)
> {
>    sum<- x + y
>    return(sum)
> }
>
> test2<- function(x,y)
> {
>    sum<- test1(x,y)
>    sumSq<- sum*sum
>    return(sumSq)
> }
>
> nlminb(start = c(1,1), test2,lower = c(0,0), upper = c(5,5))
>
>
>
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