orthax.laguerre.lag2poly

orthax.laguerre.lag2poly(c)Source

Convert a Laguerre series to a polynomial.

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

Parameters:

c (array_like) – 1-D array containing the Laguerre series coefficients, ordered from lowest order term to highest.

Returns:

pol (ndarray) – 1-D array containing the coefficients of the equivalent polynomial (relative to the “standard” basis) ordered from lowest order term to highest.

See also

poly2lag

Examples

>>> from orthax.laguerre import lag2poly
>>> lag2poly([ 23., -63.,  58., -18.])
array([0., 1., 2., 3.])