Plotting Impedance plot from touchstone file

Hello Friends,

I am using MATLAB 2018a version. I have been using the in-built RF Toolbox package for my S-Parameter work. I wanted to find out if there is a way to plot Impedance profile from the touchstone file? I can plot S-Paramter data using the function 'rfplot'. But, I was wondering if there is function defined to plot the impedance graph.

Thank you for your help