This topic explains, with code examples, how to use Polar Scatter Series in the UltraDataChart™ control.
Polar Scatter Series is rendered using markers at the locations of data points without connecting lines. The PolarScatterSeries uses the same concepts of data plotting as the ScatterSeries but wraps data points around a circle rather than stretching them along a horizontal line. Like with other series types, multiple PolarScatterSeries can be plotted in the same data chart and they can overlay each other to show differences and similarities between data sets. For more information on this group of series, refer to the Polar Series topic.
Figure 1 demonstrates what Polar Scatter Series looks like when plotted in the UltraDataChart control.
Figure 1: Sample implementation of a PolarScatterSeries
The code snippet below shows how to bind sample polar data (which is available for download from the Sample Polar Data resource) to the PolarScatterSeries. The example assumes that you have already configured your project for the UltraDataChart control.
In C#:
var data = new PolarDataSource();
var AngleAxis = new NumericYAxis();
var RadiusAxis = new CategoryXAxis();
var series = new PolarScatterSeries();
series.DataSource = data;
series.AngleMemberPath = "Angle";
series.RadiusMemberPath = "Radius";
series.AngleAxis = AngleAxis;
series.RadiusAxis = RadiusAxis;
var chart = new UltraDataChart();
chart.Axes.Add(AngleAxis);
chart.Axes.Add(RadiusAxis);
chart.Series.Add(series);In Visual Basic:
Dim data As New PolarDataSource()
Dim AngleAxis As New NumericAngleAxis()
Dim RadiusAxis As New NumericRadiusAxis()
Dim series As New PolarScatterSeries()
series.ItemsSource = polarDataSample
series.AngleMemberPath = "Angle"
series.RadiusMemberPath = "Radius"
series.AngleAxis = AngleAxis
series.RadiusAxis = RadiusAxis;
Dim chart As New UltraDataChart()
chart.Axes.Add(AngleAxis)
chart.Axes.Add(RadiusAxis)
chart.Series.Add(series)