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Chart
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TrendLine Class
TrendLine Class
Heirarchy
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TrendLineBase
- TrendLine
Constructors
Properties
Methods
Events
Constructors
constructor
Properties
altStyle
Gets or sets the alternate style for the series.
The alternate style is used for negative values in Bar, Column, and Scatter charts; and for rising values in financial chart types like Candlestick, LineBreak, EquiVolume etc.
The default value for this property is null, which causes the series to use the default style.
axisX
Gets or sets the X-axis for the series.
axisY
Gets or sets the Y-axis for the series.
binding
Gets or sets the name of the property that contains Y values for the series.
bindingX
Gets or sets the name of the property that contains X values for the series.
chart
Gets the FlexChart object that owns this series.
coefficients
Gets the coefficients of the equation.
collectionView
Gets the ICollectionView object that contains the data for this series.
cssClass
Gets or sets the series CSS class.
fitType
Gets or sets the fit type of the TrendLine.
hostElement
Gets the series host element.
interpolateNulls
Gets or sets a value that determines whether to interpolate null values in the data.
If true, the series interpolates the value of any missing data based on neighboring points. If false, it leaves a break in lines and areas at the points with null values.
The default value for this property is false.
itemFormatter
Gets or sets the item formatter function that allows you to customize the appearance of the series.
The property overrides the chart's itemFormatter wijmo.chart.FlexChart.itemFormatter.
itemsSource
Gets or sets the array or ICollectionView object that contains the series data.
legendElement
Gets the series element in the legend.
name
Gets or sets the series name.
The series name is displayed in the chart legend. Any series without a name does not appear in the legend.
order
Gets or sets the number of terms in a polynomial or Fourier equation.
Set this value to an integer greater than 1. It gets applied when the fitType is set to TrendLineFitType.Polynomial or TrendLineFitType.Fourier.
sampleCount
Gets or sets the sample count for function calculation. The property doesn't apply for MovingAverage.
style
Gets or sets the series style.
symbolMarker
Gets or sets the shape of marker to use for each data point in the series. Applies to Scatter, LineSymbols, and SplineSymbols chart types.
The default value for this property is Marker.Dot.
symbolSize
Gets or sets the size (in pixels) of the symbols used to render this Series. Applies to Scatter, LineSymbols, and SplineSymbols chart types.
The default value for this property is 10 pixels.
symbolStyle
Gets or sets the series symbol style.
Applies to Bar, Column, Scatter, LineSymbols, and SplineSymbols chart types.
tooltipContent
Gets or sets the series specific tooltip content.
The property overrides the content of chart tooltip content.
visibility
Gets or sets an enumerated value indicating whether and where the series appears.
The default value for this property is SeriesVisibility.Visible.
Methods
approximate
-
Gets the approximate y value from the given x value.
Parameters
-
x: number
The x value to be used for calculating the Y value.
Returns number
-
dataToPoint
drawLegendItem
-
Draw a legend item at the specified position.
Parameters
-
engine: IRenderEngine
The rendering engine to use.
-
rect: Rect
The position of the legend item.
-
index: number
Index of legend item(for series with multiple legend items).
Returns void
-
getDataRect
-
Returns the series bounding rectangle in data coordinates.
If getDataRect() returns null, the limits are calculated automatically based on the data values.
Parameters
-
Optional currentRect: Rect
The current rectangle of chart. This parameter is optional.
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Optional calculatedRect: Rect
The calculated rectangle of chart. This parameter is optional.
Returns Rect
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getEquation
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Gets the formatted equation string for the coefficients.
Parameters
-
Optional fmt: Function
The formatting function used to convert the coefficients into strings. This parameter is optional.
Returns string
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getPlotElement
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Gets the plot element that corresponds to the specified point index.
Parameters
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pointIndex: number
The index of the data point.
Returns any
-
hitTest
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Gets a HitTestInfo object with information about the specified point.
Parameters
-
pt: any
The point to investigate, in window coordinates.
-
Optional y: number
The Y coordinate of the point (if the first parameter is a number).
Returns HitTestInfo
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initialize
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Initializes the series by copying the properties from a given object.
Parameters
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options: any
JavaScript object containing initialization data for the series.
Returns void
-
legendItemLength
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Returns number of series items in the legend.
Returns number
measureLegendItem
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Measures height and width of the legend item.
Parameters
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engine: IRenderEngine
The rendering engine to use.
-
index: number
Index of legend item(for series with multiple legend items).
Returns Size
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onRendered
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Raises the rendered event.
Parameters
-
engine: IRenderEngine
The IRenderEngine object used to render the series.
Returns void
-
onRendering
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Raises the rendering event.
Parameters
-
engine: IRenderEngine
The IRenderEngine object used to render the series.
-
index: number
The index of the series to render.
-
count: number
Total number of the series to render.
Returns boolean
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pointToData
Events
rendered
Occurs when series is rendered.
rendering
Occurs when series is rendering.
Represents a trend line series in a FlexChart or FinancialChart.
A trend line is a line superimposed on a chart revealing the overall direction of data.
You may define a different fit type for each TrendLine series on the FlexChart by setting its fitType property.