uW_display_vsmith — Plot the smith chart in the current graphic window with vectorial arcs.
uW_display_vsmith(impedances,color)
vector of the normalized impedance to display. Most VNA use impedances=[.2 .5 1 2 5];
numerical value of the color which be used to trace the smith chart.
This function plots the smith chart into the current graphic window with vectorial arcs. Well suited for fig or eps exports.