compute_R_chiral_angle

sknano.core.structures.compute_R_chiral_angle(*Ch, degrees=True, **kwargs)

Compute “chiral angle” of symmetry vector $\theta_R$.

$$\theta_R = \tan^{-1}\left(\frac{\sqrt{3}q}{2p + q}\right)$$

Parameters:

• *Ch –

  Either a 2-tuple of ints or 2 integers giving the chiral indices of the nanotube chiral vector $\mathbf{C}_h = n\mathbf{a}_1 + m\mathbf{a}_2 = (n, m)$.

• degrees (bool, optional) – If True, return angle in degrees

Returns:

Chiral angle of symmetry vector $\theta_R$ in degrees (default) or radians (if degrees=False).

Return type:

float