EwmaChartData Class

public sealed class EwmaChartData : PointwiseLimitsChartData<EwmaBaseline>, 
	IVariableLimitChartData, IChartData

Public NotInheritable Class EwmaChartData
	Inherits PointwiseLimitsChartData(Of EwmaBaseline)
	Implements IVariableLimitChartData, IChartData

public ref class EwmaChartData sealed : public PointwiseLimitsChartData<EwmaBaseline^>, 
	IVariableLimitChartData, IChartData

[<SealedAttribute>]
type EwmaChartData = 
    class
        inherit PointwiseLimitsChartData<EwmaBaseline>
        interface IVariableLimitChartData
        interface IChartData
    end

Inheritance

Object  →  ControlChartData  →  ControlChartData<EwmaBaseline>  →  PointwiseLimitsChartData<EwmaBaseline>  →  EwmaChartData

Implements

IChartData, IVariableLimitChartData

The EWMA statistic at time t is Z_t = λ·X_t + (1 - λ)·Z_{t-1}. Control limits widen during the warm-up period as the EWMA variance converges to its steady-state value. Pointwise limits stored in UpperControlLimits and LowerControlLimits should always be used for rendering; never draw horizontal limit lines.

This type contains the mathematical data and limits necessary to render a control chart, but it is a purely numerical class. It does not contain UI elements or rendering logic.

Reference

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