scipy.interpolate.PchipInterpolator.derivative

PchipInterpolator.derivative(nu=1)

Construct a new piecewise polynomial representing the derivative.

Parameters:

nu : int, optional

Order of derivative to evaluate. Default is 1, i.e. compute the first derivative. If negative, the antiderivative is returned.

Returns:

bp : BPoly

Piecewise polynomial of order k - nu representing the derivative of this polynomial.