Nevron .NET Vision Documentation
Polar Range

A Polar Range chart displays ranges in a polar coordinate system. Each range is specified by its begin and end value and its begin and end angle. The following figure displays a Polar Range chart.




Figure 1.

Creating a Polar Range series

Polar Range series are represented by the NPolarRangeSeries type. An instance of this type must be added to the series collection of a Polar Chart (NPolarChart object).

C#
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// clear the Charts collection and create a new polar chart
NPolarChart chart = new NPolarChart();
nChartControl1.Charts.Clear();
nChartControl1.Charts.Add(chart);
// add a polar range series to the chart
NPolarRangeSeries polarRange = new NPolarRangeSeries();
chart.Series.Add(polarRange);
Visual Basic
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' clear the Charts collection and create a new polar chart
Dim chart As New NPolarChart
NChartControl1.Charts.Clear()
NChartControl1.Charts.Add(chart)
' add a polar range series to the chart
Dim polarRange As New NPolarRangeSeries
chart.Series.Add(polarRange)
Passing Data

Once the series is created you can add some data in it. Polar range series use the Values, Y2Values to specify begin/end values and Angles and X2Values to specify the range begin/end angle. The following code snippet adds a range to a polar range chart:

C#
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polarRange.Values.Add(0);
polarRange.Y2Values.Add(10);
polarRange.Angles.Add(0);
polarRange.X2Values.Add(90);

Visual Basic
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polarRange.Values.Add(0)
polarRange.Y2Values.Add(10)
polarRange.Angles.Add(0)
polarRange.X2Values.Add(90)

 

Formatting commands

Besides the standard formatting commands you can use the following commands in format strings:

<angle_in_degrees> - the current data point begin angle in degrees (extracted from the Angles data series)
<angle_in_radians> - the current data point begin angle in radians (extracted from the Angles data series)

<angle2_in_degrees> - the current data point end angle in degrees (extracted from the X2Values data series)
<angle2_in_radians> - the current data point end angle in radians (extracted from the X2Values data series)

Related Examples
Windows forms: Chart Gallery\Polar\Polar Range

 

 


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