desc.basis.FourierSeries.get_idx

FourierSeries.get_idx(L=0, M=0, N=0, error=True)

Get the index of the 'modes' array corresponding to given mode numbers.

Parameters:

• L (int) – Radial mode number.

• M (int) – Poloidal mode number.

• N (int) – Toroidal mode number.

• error (bool) – whether to raise exception if mode is not in basis, or return empty array

Returns:

idx (ndarray of int) – Index of given mode numbers.