skrf.vectorFitting.VectorFitting.plot_convergence

VectorFitting.plot_convergence(ax=None)

Plots the history of the model residue parameter d_res during the iterative pole relocation process of the vector fitting, which should eventually converge to a fixed value. Additionally, the relative change of the maximum singular value of the coefficient matrix A are plotted, which serve as a convergence indicator.

Parameters

ax (matplotlib.Axes object or None) – matplotlib axes to draw on. If None, the current axes is fetched with gca().

Returns

matplotlib axes used for drawing. Either the passed ax argument or the one fetch from the current figure.

Return type

matplotlib.Axes