EventMarkers in ViewPolar
ViewPolar. Markers are similar to ViewXY’s EventMarkers (see EventMarkers XY). Markers can be used to mark a specific data value at certain position. Assign the marker with a preferred axis by setting its AssignPolarAxisIndex. Define Amplitude and AngleValue properties to put it into place. Edit Symbol to have the preferred appearance and define the marker text with Label property.
Markers can be moved by dragging them with mouse. Set SnapToClosestPoint to Selected or All to enable nearest data point snapping when dragging it. Selected tracks only the series this marker is set to snap to with SetSnapSeries() method. All tracks all series.
There is also ClipInsideGraph property, which determines if a chart marker can be drawn outside the graph area.
Various size and color Marker in a polar chart.
To see EventMarkers used in example, check ScatterPolarMouseSelecting, CombinedPolar, Sonar fish indicator, Scanning radar from our Demo.