scipy.interpolate.PchipInterpolator.derivative¶
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PchipInterpolator.
derivative
(nu=1)[source]¶ 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.