To add an auxiliary axis for the second(index=1) data point on the radar plot, complete the following:
' add auxiliary axis for second(index=1) data point.
chart.View.Axes.Add(New Axis() With { _
Key .AxisType = AxisType.Y, _
Key .RadarPointIndices = New Integer() {1} _
})
•C#
// add auxiliary axis for second(index=1) data point.
chart.View.Axes.Add(
new Axis() { AxisType= AxisType.Y, RadarPointIndices=new int[] {1} });