Creates the ts.model's process desc
model_process_desc(desc)
A vector<string>
that contains a list of the strings of each process.
A vector<string>
with a list of descriptive values to label the estimate matrix with
This function currently does NOT support ARMA(P,Q) models. That is, there is no support for ARMA(P,Q), AR(P), or MA(Q). There is support for ARMA11, AR1, MA1, GM, WN, DR, QN, and RW.