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numpy.polynomial.legendre.poly2leg

# numpy.polynomial.legendre.leg2poly

`numpy.polynomial.legendre.``leg2poly`(c)

  Convert a Legendre series to a polynomial.

  Convert an array representing the coefficients of a Legendre 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 Legendre 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

  `poly2leg`

  Notes

  The easy way to do conversions between polynomial basis sets is to use the convert method of a class instance.

  Examples

      >>> c = P.Legendre(range(4))
      >>> c
      Legendre([ 0.,  1.,  2.,  3.], [-1.,  1.])
      >>> p = c.convert(kind=P.Polynomial)
      >>> p
      Polynomial([-1. , -3.5,  3. ,  7.5], [-1.,  1.])
      >>> P.leg2poly(range(4))
      array([-1. , -3.5,  3. ,  7.5])