Convert a three-dimensional array of real spherical harmonic coefficients to a 1-dimensional indexed vector.
vector = SHCilmToVector (cilm, [lmax])
vector : float, dimension ( (lmax+1)**2 )
: The indexed output real spherical harmonic coefficients.
cilm : float, dimension (2, lmaxin+1, lmaxin+1)
: The input real spherical harmonic coefficients.
lmax : optional, integer, default = lmaxin
: The maximum degree of the output coefficients to convert.
SHCilmToVector will convert a three-dimensional array of real spherical harmonic coefficients to a 1-dimensional indexed array. The degree l, order m, and i (1 for cosine, 2 for sine) corresponds to the index l**2+(i-1)*l+m.
shvectortocilm, yilmindexvector, shcindextocilm, shcilmtocindex