add some notes in the docstrings
@@ -479,12 +479,18 @@ class VectorFitting:
Parameters
----------
file : str
- NumPy .npz file containing the parameters. Needs to match the network properties (correct number of ports).
+ NumPy .npz file containing the parameters. See notes.
Returns
-------
None
+ Notes
+ -----
+ The .npz file needs to include the model parameters as individual `ndarray`s labeled *poles*, *zeros*,
+ *proportionals* and *constants*. The shapes of those `ndarray`s need to match the network properties in
+ :attribute:`self.network` (correct number of ports). Preferably, the .npz file was created by :func:`write_npz`.
+
See Also
--------
write_npz : Writes all model parameters to a .npz file
