numpy.polynomial.chebyshev.chebline

numpy.polynomial.chebyshev.chebline(off, scl)

Chebyshev series whose graph is a straight line.

Parameters :

off, scl : scalars

The specified line is given by off + scl*x.

Returns :

y : ndarray

This module’s representation of the Chebyshev series for off + scl*x.

See also

polyline

Examples

>>> import numpy.polynomial.chebyshev as C
>>> C.chebline(3,2)
array([3, 2])
>>> C.chebval(-3, C.chebline(3,2)) # should be -3
-3.0