is it possible to fit two curves (real and imaginary part) at the same time?

I would like to fit the real and imaginary part of a dataset at the same time. How can I do that?

Answer 1

[Davide Ferraro]

You need to separate the real and imaginary part and fit them individually. An example of this approach is available in the following tech note:

http://www.mathworks.com/support/tech-notes/1500/1508.html