inverse problem ( a new question)

Dear Walter,

First, Thank you for taking time and answering all of my questions during my Ph.D.

I have a function in s-domain, TR. I used Durbin to bring it in time domain.

the function has a few parameters. I decidede to find one of the parameters using inverse problem.

I have a file of another function which I need to match my function with it, then I can find my parameter.(MINIMIZATION)

My concern is to know how I use inverse problem here? after Durbin or...

I decided to add a few lines at the end of my durbin regarding inverse problem(minimization) and start my durbin code withy a function name [function y=f(x)].

attached, you can see my TR, f (include Durbin+ a few more line for inverse) and a mat file including the data of another function which I need to have minimization with it. Also, there is a mfile with name fint as it is just a function.

when I use optimization, I get "Index in position 1 is invalid. Array indices must be positive integers or logical values."

First: is my procedure right? if so, what is your idea please?

please find my files and see inside f.m

Again, thank you for your time and answers.

Best

M.H.