numpy.polynomial.Polynomial.identity

method

classmethod Polynomial. identity ( domain = None , window = None )

Identity function.

If p is the returned series, then p(x) == x for all values of x.

Parameters

domain {None, array_like}, optional

If given, the array must be of the form [beg, end] , where beg and end are the endpoints of the domain. If None is given then the class domain is used. The default is None.

window {None, array_like}, optional

If given, the resulting array must be if the form [beg, end] , where beg and end are the endpoints of the window. If None is given then the class window is used. The default is None.

Returns

new_series series

Series of representing the identity.