Polar chart plot allows to draw scatter chart using the polar coordinate system, which is a two-dimensional coordinate system where each point is determined by distance from a fixed point and angle from a fixed direction. X-axis in Polar chart takes form of a circle, and the ticks placed along x-axis remind of clocks. These charts can be used for drawing some mathematical functions, they support area, line, spline and scatter series and all axes supported by those series.
Also Polar charts can portray some types of radars which locate and display signals.
This Chart is of the last mentioned type: there are three Marker series in the chart representing signals of three different types. Each series has its own color and marker shape. We can switch off any series to pay attention on others by clicking on the legend items. Y-axis holds the values from 0 to 16 and x-axis holds degrees from 0 to 360 and has major ticks visible each 30 degrees.