calc_redshift_factors
=====================

.. py:method:: luminet.isoradial.Isoradial.calc_redshift_factors() -> numpy.ndarray

   Calculates the redshift factor :math:`(1 + z)` over the isoradial

   Saves these values in the :py:attr:`redshift_factors` attribute.

   :returns: :class:`~numpy.ndarray` -- Redshift factors of the isoradial