(self)
return fit_affine_transformation(self.reference_frame, physical_frame)
Return the function that map the reference domain to the physical
        domain.

        :rtype: callable
Return the function that map the reference domain to the physical
        domain.
Return the function that map the reference domain to the physical domain .
def inverse_psi(self):
        """
        Return the function that map the reference domain to the physical
        domain.

        :rtype: callable
        """
        physical_frame = self.position_vertices - self.box_origin
        return fit_affine_transformation(self.reference_frame, physical_frame)
def inverse_psi ( self ) : physical_frame = self . position_vertices - self . box_origin return fit_affine_transformation ( self . reference_frame , physical_frame )