frei: Fast radiative transfer for exoplanet inference
-----------------------------------------------------

Install the bleeding-edge version of frei with::

    python -m pip install git+https://github.com/bmorris3/frei

and go from zero to RT in five lines:

.. plot::
    :include-source:

    import matplotlib.pyplot as plt
    import astropy.units as u
    from frei import Planet, Grid, load_example_opacity

    # Define planetary system parameters
    planet = Planet.from_hot_jupiter()

    # Define a grid in wavelength, pressure, and temperature; set temperature
    grid = Grid(
        planet,
        n_wl_bins=300,     # number of wavelength bins
        n_layers=15,       # number of pressure layers
        T_ref=2400 * u.K,  # reference temperature at 0.1 bar (~T_eff)
    )

    # Load synthetic opacities, for demonstration purposes only
    grid.load_opacities(
        opacities=load_example_opacity(grid)
    );

    # Compute emission spectrum
    emission_result = grid.emission_spectrum(
        # set n_timesteps>1 for iteration towards radiative equilibrium
        n_timesteps=1
    )

    # Plot the "dashboard", showing important quantities
    fig, ax = grid.emission_dashboard(*emission_result)
    plt.show()


.. toctree::
   :maxdepth: 2
   :caption: Contents:

   frei/install.rst
   frei/opacities.rst
   frei/index.rst


Indices and tables
==================

* :ref:`genindex`
* :ref:`modindex`
* :ref:`search`