Hysteresis characterization

Polynomial characterization of hysteresis type transfer features

This function performs the polynomial characterization of hysteresis type transfer features on the basis of multiple hysteretic cycles. Thus, the polynomial coefficients of both increasing and decreasing transfer features are calculated for both abscissa values gradient signs.
Video demonstration:
https://www.youtube.com/watch?v=mWSYp7HuyyA&index=12&list=PLJXyTqQS4FL3QoWdlGj0WtT7nSYKWqBxv&ab_channel=Pseudonymeoriginal