The Smith graph or series is a graphical calculation tool used to solve problems with
transmission lines in radio frequency engineering. It has two mandatory
series components, Resistance and Reactance. The
data in these two components specify the positions of the series points in the
graph. It also has an optional component called LabelMember whose data may be used as the mark labels for the
RCirclePen and the CCirclePen properties respectively determine
the appearance of the resistance grids and the reactance grids.
RGridValues and CGridValues properties respectively specify
the values at which the resistance and reactance grids are drawn.