below the data from a damper dyno test (attached). As you can see this shows some hysteresis.
I was interested in having only one curve passing basically in the middle (a sort of average between the bump and rebump stroke) I obtained this using the cftool (and help from the matworks answer:). In particular, I achieved that with the followings
Fit_of_the_Data = fit(Velocity, Force, 'smoothingspline', 'SmoothingParam', 0.025)
Data_fitted = feval(Data_Fit,Velocity);
The fitting result is "more or less" fine (see below)
However, I wish my fitting curve to pass through zero . How can I do that?
Thanks in advance