fitting complex to custom complex equation

How could I fit a complex data to a complex complecated custom function?

Answer 1

[Ameer Hamza]

There are several ways to fit the given data to a custom model in MATLAB. If you have the curve fitting toolbox, then you can use fit(): https://www.mathworks.com/help/releases/R2020a/curvefit/fit.html

Alternatively, you can also use functions from the optimization toolbox

lsqcurvefit(): https://www.mathworks.com/help/releases/R2020a/optim/ug/lsqcurvefit.html

lsqnonlin(): https://www.mathworks.com/help/releases/R2020a/optim/ug/lsqnonlin.html

The exact solution depends on your dataset and the function.