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图表类

The Chart Class is the primary interface for Chart elements; it is used to create a series, add datapoints to a series and configure the chart appearance.

Chart Attributes

Attribute	Description	See also
Title	String Notes: Read/Write The title of the chart.
Category	ChartCategory Notes: Read only The chart category; provided in the SetChartType method.	ChartCategory
Type	ChartType Notes: Read only The chart type; provided in the SetChartType method.	ChartType

Chart Methods

Method	Description	See also
AddChartDataYXZ(double Y, double X, double Z, long seriesIndex)	long Adds a datapoint to an existing series. Parameters: Y: double, the primary Y axis value X: double, the primary X axis value Z: double, the primary Z axis value seriesIndex: long, the index of the series (returned by the CreateSeries methods)
AddChartDataYY1(string category, double Y, double Y1, long seriesIndex)	long Adds a datapoint to an existing series. Parameters: category: string - the x axis group, column or label Y: double, the primary Y axis value Y1: double, the secondary Y axis value seriesIndex: long, the index of the series (returned by the CreateSeries and CreateSeriesEx methods)
CreateSeries(string name)	LDISPATCH Adds a new series to the chart. Returns an interface that can be used to add data to the series and configure its appearance. Parameters: name: string, the displayed name of the series
CreateSeriesEx(string name, long color, ChartType type, ChartCategory category)	LDISPATCH Creates a series of a particular chart category and type and returns an IChartSeries interface. This allows charts to form multiple series in various ways. The CombinedCharts in the EAExample Model are an example of this, displaying three series for the Area, Column and Line categories respectively. Parameters: name: string, the name of the series color: long, RGB color value,-1 for default type: ChartType, one of the ChartType enumerations category: ChartCategory, one of the ChartCategory enumerations
EnableResizeAxes(boolean bEnable)	void Grants or denies the ability to resize axes. Parameters: bEnable: boolean
GetChartAxis(ChartAxisType type)	LDISPATCH Returns an IChartAxis interface for the specified axis. Parameters: type: ChartAxisType, one of the ChartAxisType enumerations	ChartAxisType
GetDiagram3D()	LDISPATCH Returns an IChartDiagram interface that can be used to specify the rendering engine; Software or OpenGL.
GetSeries(long index)	LDISPATCH Returns an IChartSeries interface for the given index. Indices for series begin at zero. Parameters: index: long
GetSeriesCount()	long Returns the number of series represented by the chart.
Redraw()	void Redraws the chart.
SetChartType(ChartType type, ChartCategory category, boolean bRedraw, boolean bResizeAxis)	void This is typically the first call made on the Chart interface. It defines the style and appearance of the Chart when it is rendered. Parameters: type: ChartType category: ChartCategory bRedraw: Boolean bResizeAxis: Boolean
SetCurveType(ChartCurveType type)	void Sets the interpolation method of drawing the curve. Parameters: type: ChartCurveType, one of the ChartCurveType enumerations, such as Line, Spline or SplineHermite.
SetSeriesShadow(boolean bShow)	void Displays or hides shadows on series. Parameters: bShow: Boolean
SetThemeOpacity(long percentage)	void Sets the opacity of the chart. Parameters: percentage: long, chart transparency as a percentage
ShowAxis(long index)	void Shows the axis for the given index. Parameters: index: long, one of the ChartAxisType enumerations	ChartAxisType
ShowDataLabels(boolean show, boolean border, boolean dropLineTomarker)	void Shows or hides data labels on the chart. Parameters: show: Boolean, show or hide labels border: Boolean, show or hide border on labels dropLineTomarker: Boolean, changes position of label with respect to line
ShowDataMarkers(boolean show, long size, ChartmarkerShape shape)	void Shows or hides data markers on the chart. Also allows setting the appearance of markers. Parameters: show: Boolean, show or hide markers size: long, size of markers in pixels shape: ChartmarkerShape, one of the ChartmarkerShape enumerations	ChartMarkerShape