compute_improper

sknano.core.atoms.mixins.compute_improper(*atoms, check_operands=True, degrees=False)

Compute improper angle.

Parameters:

• *atoms –

  list of Atoms or an Atoms object.

• check_operands (bool, optional) –
• degrees (bool, optional) –

Returns:

Return type:

float

Raises:

• TypeError – if atoms is not a list of Atom objects or an Atoms object.
• ValueError – if len(atoms) != 4.