Class MacdRTIndicator

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.momentum.MacdRTIndicator

All Implemented Interfaces:

ClockAware, Resettable, RTIndicator

public class MacdRTIndicator
extends AbstractDecorableIncrementalRTIndicator

MACD RTIndicator

Constructor Summary

Constructors

Constructor	Description
MacdRTIndicator()
MacdRTIndicator(RTIndicator indicator)
MacdRTIndicator(RTIndicator indicator, int shortEmaPeriods, int longEmaPeriods)

Method Summary

Modifier and Type	Method	Description
boolean	isReady()	Ready when both EMAs are, which is when the slower of the two is.
void	reset()
double	update(double newValue)	Computes the MACD line as the difference between the short-period EMA and the long-period EMA.

Methods inherited from class AbstractDecorableIncrementalRTIndicator

getIndicator, nextValue, setClockSupplier

Methods inherited from class AbstractIncrementalRTIndicator

getLastUpdateValue, getPeriodCycles, getPeriods, getPrevValue, initValue, isPeriodic, 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

MacdRTIndicator

public MacdRTIndicator()

MacdRTIndicator

public MacdRTIndicator(RTIndicator indicator)

MacdRTIndicator

public MacdRTIndicator(RTIndicator indicator,
 int shortEmaPeriods,
 int longEmaPeriods)

Method Details

isReady

public boolean isReady()

Ready when both EMAs are, which is when the slower of the two is. MACD is the difference of two averages, so it says nothing while either is still warming up.

Specified by:

isReady in interface RTIndicator

Overrides:

isReady in class AbstractDecorableIncrementalRTIndicator

Returns:

true if the indicator has completed its warmup period

reset

public void reset()

Specified by:

reset in interface Resettable

Overrides:

reset in class AbstractDecorableIncrementalRTIndicator

update

public double update(double newValue)

Computes the MACD line as the difference between the short-period EMA and the long-period EMA. Both EMAs are updated with the same input value, and the difference is passed to the parent incremental pipeline.

Specified by:

update in interface RTIndicator

Overrides:

update in class AbstractDecorableIncrementalRTIndicator

Parameters:

newValue - the new input price

Returns:

the MACD line value (shortEMA - longEMA)