Class: RubyTechnicalAnalysis::IntradayMomentumIndex

Inherits:

Indicator

• Object
• Indicator
• RubyTechnicalAnalysis::IntradayMomentumIndex

Defined in:

lib/ruby_technical_analysis/indicators/intraday_momentum_index.rb

Overview

Intraday Momentum Index

Find more information at: www.investopedia.com/terms/i/intraday-momentum-index-imi.asp

Instance Attribute Summary

• #period ⇒ Object readonly

  Returns the value of attribute period.

Attributes inherited from Indicator

#series

Instance Method Summary

• #call ⇒ Float

  The current Intraday Momentum Index value.

• #initialize(series: [], period: 14) ⇒ IntradayMomentumIndex constructor

  A new instance of IntradayMomentumIndex.

• #valid? ⇒ Boolean

  Whether or not the object is valid.

Methods inherited from Indicator

call

Constructor Details

#initialize(series: [], period: 14) ⇒ IntradayMomentumIndex

# File 'lib/ruby_technical_analysis/indicators/intraday_momentum_index.rb', line 10

def initialize(series: [], period: 14)
  @period = period
  @gsum = 0
  @lsum = 0

  super(series: series)
end

Instance Attribute Details

#period ⇒ Object (readonly)

Returns the value of attribute period.

# File 'lib/ruby_technical_analysis/indicators/intraday_momentum_index.rb', line 6

def period
  @period
end

Instance Method Details

#call ⇒ Float

# File 'lib/ruby_technical_analysis/indicators/intraday_momentum_index.rb', line 19

def call
  calculate_imi
end

#valid? ⇒ Boolean

# File 'lib/ruby_technical_analysis/indicators/intraday_momentum_index.rb', line 24

def valid?
  period <= series.length
end