cubic_spline

module wntr.utils.polynomial_interpolation

cubic_spline(x1, x2, f1, f2, df1, df2)

Method to compute the coefficients of a smoothing polynomial.

Parameters:

• x1 (float) – point on the x-axis at which the smoothing polynomial begins

• x2 (float) – point on the x-axis at which the smoothing polynomial ens

• f1 (float) – function evaluated at x1

• f2 (float) – function evaluated at x2

• df1 (float) – derivative evaluated at x1

• df2 (float) – derivative evaluated at x2

Return type:

A tuple with the smoothing polynomail coefficients starting with the cubic term.