numpy.polynomial.polynomial.Polynomial.identity¶
- classmethod Polynomial.identity(domain=None, window=None)[source]¶
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.