Re: [R] Optimzing a nested function

From: Duncan Murdoch <murdoch.duncan_at_gmail.com>
Date: Tue, 12 Apr 2011 05:41:28 -0400

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))
>
>
>
> --
> View this message in context: http://r.789695.n4.nabble.com/Optimzing-a-nested-function-tp3443825p3443825.html
> Sent from the R help mailing list archive at Nabble.com.
>
> ______________________________________________
> R-help_at_r-project.org mailing list
> https://stat.ethz.ch/mailman/listinfo/r-help
> PLEASE do read the posting guide http://www.R-project.org/posting-guide.html
> and provide commented, minimal, self-contained, reproducible code.



R-help_at_r-project.org mailing list
https://stat.ethz.ch/mailman/listinfo/r-help PLEASE do read the posting guide http://www.R-project.org/posting-guide.html and provide commented, minimal, self-contained, reproducible code. Received on Tue 12 Apr 2011 - 09:43:58 GMT

Archive maintained by Robert King, hosted by the discipline of statistics at the University of Newcastle, Australia.
Archive generated by hypermail 2.2.0, at Tue 12 Apr 2011 - 10:20:29 GMT.

Mailing list information is available at https://stat.ethz.ch/mailman/listinfo/r-help. Please read the posting guide before posting to the list.

list of date sections of archive