Nevron .NET Vision Documentation
Infinity Data Points Overview

Infinity data points are data points where one or more of its mandatory values are set to Double.PositiveInfinity or Double.NegativeInfinity. The control treats infinity data points similarly to empty data points, so this topic does not go into the same details.

Adding Infinity Data Points

The following code snippet shows how to add infinity data points:

C#
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NChart chart = nChartControl1.Charts[0];

NLineSeries line = new NLineSeries();

line.Values.Add(10);
line.Values.Add(20);
line.Values.Add(Double.PositiveInfinity);
line.Values.Add(40);
line.Values.Add(45);
line.Values.Add(Double.NegativeInfinity);
line.Values.Add(50);
line.Values.Add(55);

chart.Series.Add(line);

VB.NET
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Dim chart As NChart = NChartControl1.Charts(0)

Dim line As New NLineSeries

line.Values.Add(10)
line.Values.Add(20)
line.Values.Add(Double.PositiveInfinity)
line.Values.Add(40)
line.Values.Add(45)
line.Values.Add(Double.NegativeInfinity)
line.Values.Add(50)
line.Values.Add(55)

chart.Series.Add(line)

In the above example data points 3 and 6 are marked as positive and negative infinity respectively. 

Infinity Data Points Processing

The processing of infinity data points is achieved at two stages:

Infinity Data Points at Data Level

At this stage the control detects infinity data points and decides whether to visualize the data point or skip it. This is controlled trough the InfinityDataPoints member of the series. The following code snippet shows infinity data points at some custom values:

C#
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line.Values.InfinityDataPoints.ValueMode = InfinityDataPointsValueMode.CustomValue;
line.Values.InfinityDataPoints.PositiveInfinityCustomValue = 100;
line.Values.InfinityDataPoints.NegativeInfinityCustomValue = -100;
VB.NET
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line.Values.InfinityDataPoints.ValueMode = InfinityDataPointsValueMode.CustomValue
line.Values.InfinityDataPoints.PositiveInfinityCustomValue = 100
line.Values.InfinityDataPoints.NegativeInfinityCustomValue = -100

Infinity Data Points at Presentation Level

If the infinity data point is not skipped at data level the control will visualize it using either a custom value or average value as specified by the ValueMode property. The appearance of the infinity data point in this case is controlled from the InfinityDataPointsAppearance property of the series:

C#
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line.InfinityDataPointsAppearance.AppearanceMode = InfinityDataPointsAppearanceMode.Special;
line.InfinityDataPointsAppearance.BorderStyle.Color = Color.Red;
VB.NET
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line.InfinityDataPointsAppearance.AppearanceMode = InfinityDataPointsAppearanceMode.Special
line.InfinityDataPointsAppearance.BorderStyle.Color = Color.Red
Related Examples
Windows forms: Chart Gallery\Data Manipulation\Infinity Data Points
See Also

 

 


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