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Radial Area Series

This topic explains, with code examples, how to use Radial Area Series in the UltraDataChart™ control.

Introduction

Radial Area Series has a shape of a filled polygon that is bound by a collection of straight lines connecting data points. The RadialAreaSeries uses the same concepts of data plotting as the AreaSeries but wraps data points around a circle rather than stretching them along a horizontal line. For more information on this group of series, refer to the Radial Series topic.

Preview

Figure 1 demonstrates what Radial Area Series looks like when plotted in the UltraDataChart control.

xamDataChart Radial Series 04.png

Figure 1: Sample implementation of a RadialAreaSeries

Data Binding

The code snippet below shows how to bind sample radial data (which is available for download from the Sample Category Data resource) to the RadialAreaSeries. The example assumes that you have already configured your project for the UltraDataChart control.

In C#:

var data = new CategoryDataSource();

var angleAxis = new CategoryAngleAxis();
angleAxis.DataSource = data;
angleAxis.Label = "{Category}";
angleAxis.Interval = 1;

var radiusAxis = new NumericRadiusAxis();
radiusAxis.MinimumValue = 0;
radiusAxis.MaximumValue = 150;
radiusAxis.Interval = 50;
radiusAxis.RadiusExtentScale = 0.8;
radiusAxis.InnerRadiusExtentScale = 0.2;

var series = new RadialAreaSeries();
series.DataSource = data;
series.ValueMemberPath = "Value";
series.AngleAxis = angleAxis;
series.ValueAxis = radiusAxis;
series.MarkerType = MarkerType.None;
series.Thickness = 5;

var chart = new UltraDataChart();
chart.Axes.Add(angleAxis);
chart.Axes.Add(radiusAxis);
chart.Series.Add(series);

In Visual Basic:

Dim data As New CategoryDataSource()
Dim angleAxis As New CategoryAngleAxis()
angleAxis.DataSource = data
angleAxis.Label = "{Category}"
angleAxis.Interval = 1

Dim radiusAxis As New NumericRadiusAxis()
radiusAxis.MinimumValue = 0
radiusAxis.MaximumValue = 150
radiusAxis.Interval = 50
radiusAxis.RadiusExtentScale = 0.8
radiusAxis.InnerRadiusExtentScale = 0.2

Dim series As New RadialAreaSeries()
series.DataSource = data
series.ValueMemberPath = "Value"
series.AngleAxis = angleAxis
series.ValueAxis = radiusAxis
series.MarkerType = MarkerType.None
series.Thickness = 5

Dim chart As New UltraDataChart()
chart.Axes.Add(angleAxis)
chart.Axes.Add(radiusAxis)
chart.Series.Add(series)

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