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

Usage

index = YilmIndex (i, l, m)

Parameters

index : output, integer
Index of an 1D array of spherical harmonic coefficients corresponding to i, l, and m.
i : input, integer
1 corresponds to the cosine coefficient cilm(1,:,:), and 2 corresponds to the sine coefficient cilm(2,:,:).
l : input, integer
The spherical harmonic degree.
m : input, 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+1.

See also

shcilmtovector, shvectortocilm

Tags: fortran
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