Utility Functions#

Signal Generators#
Function Name	Description
`generate_flm()`	Function which generates a 2D set of random harmonic coefficients.
`generate_flmn()`	Function which generates a 3D set of random Wigner coefficients.
`generate_flmp()`	Function which generates a 3D set of random Spherical-Laguerre coefficients.
`generate_flmnp()`	Function which generates a 4D set of random Wigner-Laguerre coefficients.

Indexing Functions#
Function Name	Description
`ncoeff()`	Computes the number of spherical harmonic coefficients for given band-limit L.
`elm2ind()`	Converts from spherical harmonic 2D indexing of \((\ell,m)\) to 1D index.
`ind2elm()`	Converts from 1D spherical harmonic index to 2D index of \((\ell,m)\).
`elmn2ind()`	Converts from Wigner space 3D indexing of \((\ell,m, n)\) to 1D index.
`flm_2d_to_1d()`	Converts from 2D indexed harmonic coefficients to 1D indexed coefficients.
`flm_1d_to_2d()`	Converts from 1D indexed harmnonic coefficients to 2D indexed coefficients.
`flmn_3d_to_1d()`	Converts from 3D indexed Wigner coefficients to 1D indexed coefficients.
`flmn_1d_to_3d()`	Converts from 1D indexed Wigner coefficients to 3D indexed coefficients.