Convert a 1-dimensional indexed vector of real spherical harmonic coefficients to a three-dimensional array.
cilm = SHVectorToCilm (vector, [lmax])
cilm : float, dimension (2, lmax+1, lmax+1) : The 3-D arrary of output real spherical harmonic coefficients.
vector : float, dimension ( (lmaxin+1)**2 ) : The input 1-D indexed array of real spherical harmonic coefficients.
lmax : optional, optional, default = lmaxin : The maximum degree of the output coefficients.
SHVectorToCilm will convert a 1-dimensional indexed vector of real spherical harmonic coefficients to a three-dimensional array. The degree l, order m, and i (1 = cosine, 2 = sine) corresponds to the index l**2+(i-1)*l+m.