i get good fitting result from curve fitting toolbox, how can i convert it to program code?

Hello,

I used cftool to get good fitting result. I wonder how can i convert it to program.

The option i used (in fact, is default setting):

Type of fit:Customer equation

Fit options:NonlinearLeastSquares

Robust: off

Algorithm: Trust-region

After solving, I can get: General model: f(x) = a^2/((b^2+(x-c)^2)) Coefficients (with 95% confidence bounds): a = 8.821 (-5.137, 22.78) b = 2.988 (0.1299, 5.846) c = 18.64 (17.21, 20.07)

The value of a,b,c is exactly what I want. But I want to use code to get the above solution.

I think it is related to fsolve, but i spend hours of time, but still I cannot figure out how to use code to get my result.

Thanks for help!

Answer 1

[Andrei Bobrov]

try use nlinfit from Statistics Toolbox