Barak 0.3.2 documentation

barak.interp.CubicSpline.set_d2

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barak.interp.CubicSpline.set_d2

CubicSpline.set_d2(firstderiv=None, lastderiv=None, verbose=False)[source]

Calculates the second derivative of a cubic spline function y = f(x) for each value in array x. This is called by __init__() when a new class instance is created.

Parameters :

firstderiv : float, (None)

1st derivative of f(x) at x[0]. If None, then 2nd derivative is set to 0 (‘natural’).

lastderiv : float (None)

1st derivative of f(x) at x[-1]. If None, then 2nd derivative is set to 0 (‘natural’).

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