code: def compute_norm_tig(g, **kwargs):
      r
      tig = compute_tig(g, **kwargs)
      return np.linalg.norm(tig, axis=1, ord=2)
docs: r"""
      Compute the :math:`\ell_2` norm of the Tig.
      See :func:`compute_tig`.
  
      Parameters
      ----------
      g: Filter
          The filter or filter bank.
      kwargs: dict
          Additional parameters to be passed to the
          :func:`pygsp.filters.Filter.filter` method.