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SDK Version: 3.11.4-302512

Documentation generated on 24 July 2015

Class
caplin.chart.study

ExponentialMovingAverage

Implements caplin.chart.Study.
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 caplin.chart.series.Fields for details.

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

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

Constructor Summary

Attributes Name and Description
caplin.chart.study.ExponentialMovingAverage(String alias, Object derivationParams, Object listener, Object configOverrides)

Constructs a new caplin.chart.study.ExponentialMovingAverage.

Method Summary

Attributes Name and Description
void evaluate(Array data)

Calculates the simple exponential average over the given period.
Methods implemented from class caplin.chart.Study:
enqueue, getAlias, getColor, getColors, getConfigValue, getDerivationParam, getDerivationParams, getDisplayName, getId, getRepresentationNames, getRepresentationTypes, serialize

Constructor Detail

► caplin.chart.study.ExponentialMovingAverage(String alias, Object derivationParams, Object listener, Object configOverrides)

Constructs a new caplin.chart.study.ExponentialMovingAverage.

Parameters
String alias The Study alias.
Object derivationParams Study derivation options.
Object listener A listener object that implements the caplin.chart.study.StudyListener interface.
Object configOverrides (optional) Configuration overrides passed to the parent class. This study uses the default configuration options.

Method Detail

► void evaluate(Array data)

Calculates the simple exponential average over the given period.

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

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

Parameters
Array data Chart series data in the Caplin Format.
See
caplin.chart.Study