I need to fit experimental data to an analytical solution. The analytical solution has the form:
where f(z,t,D) is a known function of time (t) and position (z), and D and C_eq are parameters to regress.
I have already determined D and C_eq using the routine fminsearch. However, I would like to consider that C_eq does not necessarily have to be constant and can change over time.
My question is whether it is possible to regress C_eq as a vector instead of a constant? In this case, which routine is the most appropriate?
P.D: parameter D could also be considered as a vector if necessary.
Thanks in advance.