Smith Chart with Real Time Data.

Creates a Smith chart using default values of r and x, the real and imaginary parts of the normalized characteristic impedance, respectively. It also creates a text showing the exact value of r, x, the real and imaginary parts, magnitude and angle of the reflection coeffcient at the cursor in real time. The chart also generates the r circle and the x circle that intersect the cursor, and update them continously. Clicking the chart will freeze the dynamic circles, clicking again will re-enable the dynamic plotting.