I have 11 sets of measured data (x:Delta_n, y:Tau_base) for different temperatures, I want to fit them using an custom function 'Seff_model1_temp3' (y: TauEff and x: Delta_n). I have 7 fitting parameters (see highlighted part in the code).
By varing temperature (T), I want to fit all 11 sets of data using same fitting paramters.
Can someone help me with the fitting? prefer to use nonlinear least squares. I want to set the upper and lower limit for each fitting parameters as well!
Thanks in advance!!!!