orthax.poly2orth

orthax.poly2orth(pol, rec)Source 

Convert a polynomial to an orthogonal series.

Convert an array representing the coefficients of a polynomial (relative to the “standard” basis) ordered from lowest degree to highest, to an array of the coefficients of the equivalent Chebyshev series, ordered from lowest to highest degree.

Parameters:

pol (array_like) – 1-D array containing the polynomial coefficients
rec (AbstractRecurrenceRelation) – Recurrence relation for the family of orthogonal polynomials.

Returns:

c (ndarray) – 1-D array containing the coefficients of the equivalent orthogonal series.