numpy.polynomial.laguerre.lag2poly — NumPy v1.13 Manual (original) (raw)
numpy.polynomial.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. |
Notes
The easy way to do conversions between polynomial basis sets is to use the convert method of a class instance.
Examples
from numpy.polynomial.laguerre import lag2poly lag2poly([ 23., -63., 58., -18.]) array([ 0., 1., 2., 3.])