Results

class orbitize.results.Results(system=None, sampler_name=None, post=None, lnlike=None, version_number=None, curr_pos=None)[source]

A class to store accepted orbital configurations from the sampler

Parameters

  • system (orbitize.system.System) – System object used to do the fit.

  • sampler_name (string) – name of sampler class that generated these results (default: None).

  • post (np.array of float) – MxN array of orbital parameters (posterior output from orbit-fitting process), where M is the number of orbits generated, and N is the number of varying orbital parameters in the fit (default: None).

  • lnlike (np.array of float) – M array of log-likelihoods corresponding to the orbits described in post (default: None).

  • version_number (str) – version of orbitize that produced these results.

  • data (astropy.table.Table) – output from orbitize.read_input.read_file()

  • curr_pos (np.array of float) – for MCMC only. A multi-D array of the current walker positions that is used for restarting a MCMC sampler.

Written: Henry Ngo, Sarah Blunt, 2018

API Update: Sarah Blunt, 2021

add_samples(orbital_params, lnlikes, curr_pos=None)[source]

Add accepted orbits, their likelihoods, and the orbitize version number to the results

Parameters

  • orbital_params (np.array) – add sets of orbital params (could be multiple) to results

  • lnlike (np.array) – add corresponding lnlike values to results

  • curr_pos (np.array of float) – for MCMC only. A multi-D array of the current walker positions

Written: Henry Ngo, 2018

API Update: Sarah Blunt, 2021

load_results(filename, append=False)[source]

Populate the results.Results object with data from a datafile

Parameters

  • filename (string) – filepath where data is saved

  • append (boolean) – if True, then new data is added to existing object. If False (default), new data overwrites existing object

See the save_results() method in this module for information on how the data is structured.

Written: Henry Ngo, 2018

API Update: Sarah Blunt, 2021

plot_corner(param_list=None, **corner_kwargs)[source]

Wrapper for orbitize.plot.plot_corner

plot_orbits(object_to_plot=1, start_mjd=51544.0, num_orbits_to_plot=100, num_epochs_to_plot=100, square_plot=True, show_colorbar=True, cmap=<matplotlib.colors.LinearSegmentedColormap object>, sep_pa_color='lightgrey', sep_pa_end_year=2025.0, cbar_param='Epoch [year]', mod180=False, rv_time_series=False, plot_astrometry=True, plot_astrometry_insts=False, plot_errorbars=True, fig=None)[source]

Wrapper for orbitize.plot.plot_orbits

print_results()[source]

Prints median and 68% credible intervals alongside fitting labels

save_results(filename)[source]

Save results.Results object to an hdf5 file

Parameters

filename (string) – filepath to save to

Save attributes from the results.Results object.

sampler_name, tau_ref_epcoh, version_number are attributes of the root group. post, lnlike, and parameter_labels are datasets that are members of the root group.

Written: Henry Ngo, 2018

API Update: Sarah Blunt, 2021