Class AbstractEmaRTIndicator

java.lang.Object

com.wualabs.qtsurfer.engine.indicators.core.AbstractRTIndicator

com.wualabs.qtsurfer.engine.indicators.core.AbstractIncrementalRTIndicator

com.wualabs.qtsurfer.engine.indicators.core.AbstractDecorableIncrementalRTIndicator

com.wualabs.qtsurfer.engine.indicators.core.AbstractEmaRTIndicator

All Implemented Interfaces:

ClockAware, Resettable, RTIndicator

Direct Known Subclasses:

EmaRTIndicator, MmaRTIndicator

public abstract class AbstractEmaRTIndicator
extends AbstractDecorableIncrementalRTIndicator

Base class for EMA RT Indicators

Constructor Summary

Constructors

Modifier	Constructor	Description
protected	AbstractEmaRTIndicator(int periods, double alpha, RTIndicator indicator)

Method Summary

Modifier and Type	Method	Description
protected double	nextValue(double prevValue, double newValue)	Computes the exponential moving average using the standard EMA formula: EMA = prevEMA + alpha * (newValue - prevEMA).

Methods inherited from class AbstractDecorableIncrementalRTIndicator

getIndicator, reset, setClockSupplier, update

Methods inherited from class AbstractIncrementalRTIndicator

getLastUpdateValue, getPeriodCycles, getPeriods, getPrevValue, initValue, isPeriodic, isReady, prevNextValue, setPeriods, tickValue

Methods inherited from class AbstractRTIndicator

equals, getDisplayHint, getMeta, getValue, hashCode, hide, isPoison, setValue, toString, toString, withDisplayHint, withMeta

Methods inherited from class Object

clone, finalize, getClass, notify, notifyAll, wait, wait, wait

Methods inherited from interface RTIndicator

getId, isHidden, ro, update, update

Constructor Details

AbstractEmaRTIndicator

protected AbstractEmaRTIndicator(int periods,
 double alpha,
 RTIndicator indicator)

Method Details

nextValue

protected double nextValue(double prevValue,
 double newValue)

Computes the exponential moving average using the standard EMA formula: EMA = prevEMA + alpha * (newValue - prevEMA). The alpha (smoothing factor) is set by subclasses (e.g., 2/(periods+1) for EMA, 1/periods for MMA).

Overrides:

nextValue in class AbstractDecorableIncrementalRTIndicator

Parameters:

prevValue - the previous EMA value

newValue - the new input value

Returns:

the updated EMA value