JSDoc: Class: module:caplin/chart/study/ExponentialMovingAverage

Class: module:caplin/chart/study/ExponentialMovingAverage

module:caplin/chart/study/ExponentialMovingAverage

Constructor

new module:caplin/chart/study/ExponentialMovingAverage(alias, derivationParams, listener, configOverridesopt)

Constructs a new caplin.chart.study.ExponentialMovingAverage. A study that calculates the exponential moving average over the given period.

This study requires the period to be passed in the derivation options. By default it will use the `close` field as the value for calculating the study data. If you require a different field, set a `field` property in the derivation options. See module:caplin/chart/series/Fields for details.

This study only requires the configuration options defined by module:caplin/chart/Study.

This study is aliased by the caplin.chart-ema-study alias. To create a new instance of this study use the module:caplin/chart/study/Factory.

Parameters:

Name	Type	Attributes	Description
`alias`	String		The Study alias.
`derivationParams`	Object		Study derivation options.
`listener`	Object		A listener object that implements the `module:caplin/chart/study/StudyListener` interface.
`configOverrides`	Object	<optional>	Configuration overrides passed to the parent class. This study uses the default configuration options.

Implements:

module:caplin/chart/Study

Methods

evaluate(data)

Calculates the simple exponential average over the given period.

Once completed it will invoke the module:caplin/chart/study/StudyListener#onStudyData method on its listener.

The format of the calculated data is [[timestamp, value], ...].

Parameters:

Name	Type	Description
`data`	Array	Chart series data in the Caplin Format.

See:

module:caplin/chart/Study#evaluate