Radar Area Chart

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Short Description

The Radar Area Chart is represented by the RadarAreaSeriesView object, which belongs to Radar Series Views. This view allows you to display series as filled area on a circular grid that has multiple axes along which data can be plotted. Note that although these charts normally have a circular shape, they can also be displayed as a polygon. Use the RadarDiagram.DrawingStyle property to specify the shape.

A Radar Area chart is shown in the image below.

SeriesView_RadarAreaSeries.png

Chart Type Characteristics

The table below lists the main characteristics of this chart type.

Feature Value
Series View type RadarAreaSeriesView
Diagram type RadarDiagram
Number of arguments per series point 1
Number of values per series point 1
NOTE

For information on which chart types can be combined with the Radar Area Chart, refer to the following help topic: Combining Different Series Views.

Example

The following example creates a ChartControl with a series of the RadarAreaSeriesView type, sets its general properties, and adds this chart to a form at runtime. Before proceeding with this example, first create a Windows Forms Application in Visual Studio, and add all required assemblies to the project's References list.

Then, add the following code to the Form.Load event handler.

using System;
using System.Windows.Forms;
using DevExpress.XtraCharts;
// ...

private void Form1_Load(object sender, EventArgs e) {
    // Create a new chart.
    ChartControl RadarAreaChart = new ChartControl();

    // Add a radar series to it.
    Series series1 = new Series("Series 1", ViewType.RadarArea);

    // Populate the series with points.
    series1.Points.Add(new SeriesPoint(0, 90));
    series1.Points.Add(new SeriesPoint(90, 95));
    series1.Points.Add(new SeriesPoint(180, 50));
    series1.Points.Add(new SeriesPoint(270, 55));
    series1.Points.Add(new SeriesPoint(0, 180));
    series1.Points.Add(new SeriesPoint(90, 185));
    series1.Points.Add(new SeriesPoint(180, 270));
    series1.Points.Add(new SeriesPoint(270, 275));

    // Add the series to the chart.
    RadarAreaChart.Series.Add(series1);

    // Flip the diagram (if necessary).
    ((RadarDiagram)RadarAreaChart.Diagram).StartAngleInDegrees = 180;
    ((RadarDiagram)RadarAreaChart.Diagram).RotationDirection =
        RadarDiagramRotationDirection.Counterclockwise;

    // Add a title to the chart and hide the legend.
    ChartTitle chartTitle1 = new ChartTitle();
    chartTitle1.Text = "Radar Area Chart";
    RadarAreaChart.Titles.Add(chartTitle1);
    RadarAreaChart.Legend.Visible = false;

    // Add the chart to the form.
    RadarAreaChart.Dock = DockStyle.Fill;
    this.Controls.Add(RadarAreaChart);
}
TIP

For the complete sample project, see the following DevExpress Support Center example: http://www.devexpress.com/example=E1060.

See Also