Nevron Open Vision Documentation
Chart / Charts / Types / Cartesian / Series / Point Series
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    Point Series
    In This Topic

    Point Charts display one or two dimensional data as points in a Cartesian coordinate system. Values are represented by the position of the points on the chart. The following image shows an xy scatter point chart:

     Creating a Point Series

    Point series are represented by the NPointSeries type. An instance of this type must be added to the series collection of a Cartesian chart:

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    NPointSeries point = new NPointSeries();

    chart.Series.Add(point);

     Passing Data

    Point series accept data points of type NPointDataPoint. The following code snippet shows how to add data to a point series:

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    // enable x values
    point.UseXValues = true;

    // add data point
    NPointDataPoint pointDataPoint = new NPointDataPoint();
    pointDataPoint.Value = 10;
    pointDataPoint.X = 10;
    point.DataPoints.Add(pointDataPoint);

     Controlling the Points Shape

    The point series allows you to modify the point shape of all the data points in the series as well as individual data point. The following code snippet shows how to create a point series where all points use ellipse shape except the first one which uses star:

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    NPointSeries point = new NPointSeries();

    chart.Series.Add(point);

    // disable data labels

    point.DataLabelStyle = new NDataLabelStyle(false);

    // enable x values

    point.UseXValues = true;

    // change the default shape to ellipse

    point.Shape = ENPointShape.Ellipse;

    // add data point 1

    NPointDataPoint dataPoint0 = new NPointDataPoint(0, 0);

    dataPoint0.Shape = ENPointShape.Rectangle;

    point.DataPoints.Add(dataPoint0);

    // add data point 1

    point.DataPoints.Add(new NPointDataPoint(10, 10));

    // add data point 2

    point.DataPoints.Add(new NPointDataPoint(20, 20));

     Controlling the Points Size

    The point size is controlled from the Size property of the NPointSeries. The following code modifies the size so that points are 10dips wide and tall:

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    point.Size = 10;

    See Also