'(staticmethod) Create a new Affine2D instance from the given
values::
a c e
b d f
0 0 1'

@staticmethod
def from_values(a, b, c, d, e, f):

    return Affine2D(np.array([a, c, e, b, d, f, 0.0, 0.0, 1.0], float).reshape((3, 3)))
