This function computes each process to WV (haar) in a given model.
decomp_theoretical_wv(theta, desc, objdesc, tau)A vec containing the list of estimated parameters.
A vector<string> containing a list of descriptors.
A field<vec> containing a list of object descriptors.
A vec containing the scales e.g. \(2^{\tau}\)
A mat containing the wavelet variance of each process in the model