Compute the cross-power spectrum of two complex functions.
cspectrum = pyshtools.SHCrossPowerSpectrumC (cilm1, cilm2, [lmax])
cspectrum : complex, dimension (lmax+1)
: The cross-power spectrum of the two complex functions.
cilm1 : complex, dimension (2, lmaxin1+1, lmaxin1+1)
: The complex spherical harmonics of the first complex function.
cilm2 : complex, dimension (2, lmaxin2+1, lmaxin2+1)
: The complex spherical harmonics of the second complex function.
lmax : optional, integer, default = min(lmaxin1, lmaxin2)
: The maximum spherical harmonic degree of the cross power spectrum. This must be less than or equal to the minimum of lmaxin1 and lmaxin2.
SHCrossPowerSpectrumC will calculate the cross-power spectrum of two complex functions expressed in complex spherical harmonics. For a given spherical harmonic degree l, this is calculated as:
cspectrum(l) = Sum_{i=0}^1 Sum_{m=0}^l cilm1[i, l, m] * conjg[cilm2[i, l, m]].
shpowerlc, shpowerdensitylc, shcrosspowerlc, shcrosspowerdensitylc, shpowerspectrumc, shpowerspectrumdensityc, shcrosspowerspectrumdensityc