[R] calculating co-spectra and quad-spectra

[Bryan K Woods]

I am trying to calculate co and quad spectra for meteorological 
variables in order to spectrally examine momentum and energy fluxes. I 
noticed that the spec.pgram function returns power curves for both 
individual variables as well as coherence and phase information, but 
nothing about the co/quad spectrum. Does anyone have any experience with 
this and know of a way to back the cross-spectra out of this information 
or know of another package?

Thanks
Bryan

-- 
Bryan Woods
Dept. of Geology & Geophysics
Yale University, KGL 234
210 Whitney Ave
New Haven, CT 06511

978.726.3462 (cell)
203.432.3134 (fax)
203.404.3365 (home)