Passing constants to optimization functions

David Doria — Wed, 10 Oct 2007 15:19:17 -0400

I am trying to use lsqnonlin(), but my user defined function
needs to know a couple of constants. The lsqnonlin expects
my function to only accept one parameter (the one being
optimized). Is there a better way to "pass" these constants
besides making them global?

Thanks,

David

Re: Passing constants to optimization functions

John D'Errico — Wed, 10 Oct 2007 15:36:26 -0400

"David Doria" <daviddoria@gmail.com> wrote in message <feiqhl$7nd
$1@fred.mathworks.com>...
> I am trying to use lsqnonlin(), but my user defined function
> needs to know a couple of constants. The lsqnonlin expects
> my function to only accept one parameter (the one being
> optimized). Is there a better way to "pass" these constants
> besides making them global?

Use an anonymous function.

a = 2;
f = @(x) (x-a).^2;

Obviously, the minimum occurs at x = a = 2.
Can we find it?

x = fminsearch(f,0)
x =
2

HTH,
John

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Passing constants to optimization functions

Re: Passing constants to optimization functions