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BubbleChartDataAdapter.MarkerType Property

Gets or sets a value specifying the appearance of bubble markers.

Namespace: DevExpress.XtraMap

Assembly: DevExpress.XtraMap.v18.2.dll

Declaration

[DefaultValue(MarkerType.Default)]
public MarkerType MarkerType { get; set; }

Property Value

Type Default Description
MarkerType

Default

A MarkerType enumeration value.

Available values:

Show 13 items
Name Description
Default

The default marker type.

Square

A marker is drawn as a square.

MarkerType_Square

Diamond

A marker is drawn as a diamond.

MarkerType_Diamond

Triangle

A marker is drawn as a triangle.

MarkerType_Triangle

InvertedTriangle

A marker is drawn as an inverted triangle.

MarkerType_InvertedTriangle

Circle

A marker is drawn as a circle.

MarkerType_Circle

Plus

A marker is drawn as a plus sign.

MarkerType_Plus

Cross

A marker is drawn as a cross.

MarkerType_Cross

Star5

A marker is drawn as a five pointed star.

MarkerType_Star5

Star6

A marker is drawn as a six pointed star.

MarkerType_Star6

Star8

A marker is drawn as an eight pointed star.

MarkerType_Star8

Pentagon

A marker is drawn as a pentagon.

MarkerType_Pentagon

Hexagon

A marker is drawn as a hexagon.

MarkerType_Hexagon

Examples

This example demonstrates how to generate bubble charts for a map control. Do the following:

    // Specify data for the bubble layer.
    BubbleLayer.Data = CreateData();
private IMapDataAdapter CreateData() {
    BubbleChartDataAdapter adapter = new BubbleChartDataAdapter() {
        DataSource = LoadData(),
        MeasureRules = CreateMeasureRules(),
        ItemMaxSize = 60,
        ItemMinSize = 10
    };

    #region #Mappings
    // Map the properties of chart items to the appropriate fields in the data source.
    adapter.Mappings.Latitude = "glat";
    adapter.Mappings.Longitude = "glon";
    adapter.Mappings.Value = "mag";
    #endregion #Mappings

    // Create attribute mappings to provide additional information about map items to the map.
    adapter.AttributeMappings.Add(new MapItemAttributeMapping("Magnitude", "mag"));
    adapter.AttributeMappings.Add(new MapItemAttributeMapping("Year", "yr"));
    adapter.AttributeMappings.Add(new MapItemAttributeMapping("Month", "mon"));
    adapter.AttributeMappings.Add(new MapItemAttributeMapping("Day", "day"));
    adapter.AttributeMappings.Add(new MapItemAttributeMapping("Depth", "dep"));

    return adapter;
}

private DataTable LoadData() {
    DataSet ds = new DataSet();
    ds.ReadXml(dataPath);
    DataTable dt = ds.Tables[0];
    dt.DefaultView.RowFilter = string.Format(CultureInfo.InvariantCulture, "(mag >= {0}) AND (mag <= {1})", minMagnitude, maxMagnitude);

    return ds.Tables[0];
}

private MeasureRules CreateMeasureRules() {
    MeasureRules measureRules = new MeasureRules();

    measureRules.ApproximateValues = true;
    measureRules.RangeDistribution = new LinearRangeDistribution();

    for (int i = minMagnitude; i < maxMagnitude; i++) {
        measureRules.RangeStops.Add(i);
    }

    return measureRules;
}
See Also