Compute the index of an 1D array of spherical harmonic coefficients corresponding to i, l, and m.

Usage

index = YilmIndexVector (i, l, m)

Returns

index : integer
Index of an 1D array of spherical harmonic coefficients corresponding to i, l, and m.

Parameters

i : integer
1 corresponds to the cosine coefficient cilm[0,:,:], and 2 corresponds to the sine coefficient cilm[1,:,:].
l : integer
The spherical harmonic degree.
m : integer
The angular order.

Description

YilmIndexVector will calculate the index of a 1D vector of spherical harmonic coefficients corresponding to degree l, angular order m and i (1 = cosine, 2 = sine). The index is given by l**2+(i-1)*l+m.

See also

shcilmtovector, shvectortocilm

Tags: python
Edit me