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V26.1
  • TdxChartXYSeriesStackedAreaView Class

    Stores Stacked Area View settings.

    Declaration

    TdxChartXYSeriesStackedAreaView = class(
        TdxChartXYSeriesAreaView
    )

    Remarks

    An Area View displays series values as filled areas on a diagram. The peaks and hollows in the filled areas reflect series point values. All Area Views support the same line appearance settings for filled area borders as Line Views.

    The TdxChartXYSeriesStackedAreaView class implements the Stacked Area View designed to display series as stacked areas on a diagram. Use this View when you display multiple series and you need to emphasize the total. To select the Stacked Area View, assign 'StackedArea' to the ViewType property of an XY series.

    VCL Chart Control: An XY Diagram with Two Stacked Area Series

    Main API Members

    The list below outlines key members of the TdxChartXYSeriesStackedAreaView class.

    Area View-Specific Settings

    Appearance
    Provides access to general line and area appearance settings.
    Markers
    Allows you to display value markers and change their size, shape, and color.
    Optimization
    Specifies the active performance optimization mode for line drawing.

    Common XY Series View API Members

    AxisX | AxisY

    Allow you to associate the series View with different argument and value axes in the parent XY diagram.

    The Chart control uses the scales of the associated axes to display an XY series.

    GetDescription
    Returns the series View type description.
    GetViewImages
    Returns an image list populated with icons that correspond to all registered series View types.
    GetViewImageIndex
    Returns the index of the icon that corresponds to the current series View type.
    ValueLabels
    Provides access to value label settings.

    General-Purpose API Members

    Assign
    Copies compatible settings between Area Views.
    Series
    Provides access to the parent XY series.

    To see area series in action, run the Chart Control demo in the VCL Demo Center installed with compiled DevExpress VCL demos. Click the Area item in the sidebar to display the corresponding demo.

    Download: Compiled VCL Demos

    Compiled DevExpress demos ship with source code installed in the Public Documents folder (%PUBLIC%) for all users (default). You can find all project and source code files for the Chart Control demo in the following folder:

    %PUBLIC%\Documents\DevExpress VCL Demos\MegaDemos\Product Demos\ExpressChart\
    

    Tip

    Project and source code files for all compiled DevExpress VCL Demos are maintained in a public repository hosted on GitHub:

    View Example: DevExpress VCL Demos

    Indirect TdxChartXYSeriesStackedAreaView Class References

    The TdxChartCustomSeries.View property references the TdxChartXYSeriesStackedAreaView class as a TdxChartSeriesCustomView object if the ViewType property of the parent series is set to 'StackedArea'.

    You need to cast the returned object to the TdxChartXYSeriesStackedAreaView class to access all public API members.

    Other Area View Series Classes

    TdxChartXYSeriesAreaView
    Stores Simple Area View settings.
    TdxChartXYSeriesFullStackedAreaView
    Stores Full-Stacked Area View settings.
    See Also