plot_isoradials
===============

.. py:method:: luminet.black_hole.BlackHole.plot_isoradials(direct_r: List[int | float], ghost_r: List[int | float] | None = None, color_by='flux', ax: matplotlib.axes.Axes | None = None, **kwargs) -> matplotlib.axes.Axes

   Plot multiple isoradials.

   This method can be used to plot one or more isoradials.
   If the radii are close to each other, the isoradials will be plotted on top of each other,
   essentially visualizing the entire black hole.

   :Parameters: * **direct_r** (*List[int | float]*) -- list of radii for the direct image
                * **ghost_r** (*List[int | float]*) -- list of radii for the ghost image
                * **color** (*str*) -- color scheme for the isoradials. Default is 'flux'.
                * **kwargs** (*optional*) -- additional keyword arguments for the :meth:`luminet.isoradial.Isoradial.plot` method.
                * **ax** (:class:`~matplotlib.axes.Axes`, optional) -- Axes object to plot on.
                  Useful for when you want to plot multiple things one a single canvas.

   Example::

       from luminet.black_hole import BlackHole

       direct_irs = [6, 10, 15, 20]
       ghost_irs = [6, 20, 50, 100]  # ghost_r can go to infinity
       ax = bh.plot_isoradials(direct_irs, ghost_irs, lw=1, colors='white')

   .. image:: /../_static/_images/isoradials.png
      :align: center

   :returns: :py:class:`~matplotlib.axes.Axes` -- The plotted isoradials.