compute_actions

superfreq.compute_actions(freqs, table, max_int=12)[source]

Reconstruct approximations to the actions using Percival’s equation.

Approximate the values of the actions using a Fourier decomposition. You must pass in the frequencies and frequency table determined from and orbit in Cartesian coordinates.

For example, see: - Valluri & Merritt (1999) - Percival (1974)

Parameters:

freqs : array_like

The fundamental frequencies.

table : structured array

The full table of frequency modes, amplitudes, and phases for all components detected in the FFT.

max_int : int (optional)

The integer vectors considered will go from -max_int to max_int in each dimension.
Returns:

actions : numpy.ndarray

Numerical estimates of the orbital actions.