curve fitting, and finding the parameters

2014 3 5

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I have this histogram which i need to make a fit by using fminsearch:

I am given this function:

f(x)=Beta*exp(-(x-xc)^2/lambda)

which method would be the best way to use?

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Rasmus 2014-3-5

but how do i find the parameters beta, xc and lambda by using it?

Matt J 2014-3-5

by designing a cost function of the form

g([beta,xc,lambda]) = norm(f(xi)-measurements)

and minimizing g() with fminsearch.

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