Class: Indicator::AutoGen::Bbands

Inherits:
Base
  • Object
show all
Defined in:
lib/indicator/auto_gen/bbands.rb

Overview

Ta-Lib function mapping class Function: ‘BBANDS’ Description: ‘Bollinger Bands’ This file has been autogenerated - Do Not Edit.

Instance Attribute Summary collapse

Attributes inherited from Base

#name

Class Method Summary collapse

Instance Method Summary collapse

Methods inherited from Base

inherited, #map_ohlcv

Methods included from DataMapper

#default_getter, #default_getter=, #map

Constructor Details

#initialize(*args) ⇒ Bbands

Returns a new instance of Bbands.



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# File 'lib/indicator/auto_gen/bbands.rb', line 15

def initialize(*args)
  if args.first.is_a? Hash
    h = args.first
    @time_period = h[:time_period] || 5
    @deviations_up = h[:deviations_up] || 2.000000e+0
    @deviations_down = h[:deviations_down] || 2.000000e+0
    @ma_type = h[:ma_type] || 0
  else
    @time_period = args[0] || 5 
    @deviations_up = args[1] || 2.000000e+0 
    @deviations_down = args[2] || 2.000000e+0 
    @ma_type = args[3] || 0 
  end
  
  @func = TaLib::Function.new("BBANDS")
end

Instance Attribute Details

#deviations_down ⇒ Object

Deviations down <Double>



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# File 'lib/indicator/auto_gen/bbands.rb', line 11

def deviations_down
  @deviations_down
end

#deviations_up ⇒ Object

Deviations up <Double>



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# File 'lib/indicator/auto_gen/bbands.rb', line 9

def deviations_up
  @deviations_up
end

#ma_type ⇒ Object

MA Type <MA Type>



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# File 'lib/indicator/auto_gen/bbands.rb', line 13

def ma_type
  @ma_type
end

#time_period ⇒ Object

Time Period <Integer>



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# File 'lib/indicator/auto_gen/bbands.rb', line 7

def time_period
  @time_period
end

Class Method Details

.arguments ⇒ Object

The list of arguments



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# File 'lib/indicator/auto_gen/bbands.rb', line 38

def self.arguments
  [ :time_period, :deviations_up, :deviations_down, :ma_type ]
end

.inputs ⇒ Object

The minimum set of inputs required



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# File 'lib/indicator/auto_gen/bbands.rb', line 43

def self.inputs
  [ :in_real ]
end

.outputs ⇒ Object

The outputs generated by this function



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# File 'lib/indicator/auto_gen/bbands.rb', line 48

def self.outputs
  [ :out_real_upper_band, :out_real_middle_band, :out_real_lower_band ]
end

.price_input? ⇒ Boolean

Is price data required as an input

Returns:

  • (Boolean) 


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# File 'lib/indicator/auto_gen/bbands.rb', line 33

def self.price_input?
  false
end

Instance Method Details

#run(in_real) ⇒ Object 



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# File 'lib/indicator/auto_gen/bbands.rb', line 52

def run(in_real)
  len = in_real.length
  @func.in_real(0, map(in_real))

  @func.opt_int(0, @time_period)
  @func.opt_real(1, @deviations_up)
  @func.opt_real(2, @deviations_down)
  @func.opt_int(3, @ma_type)

  out_real_upper_band = Array.new(len)
  @func.out_real(0, out_real_upper_band)
  out_real_middle_band = Array.new(len)
  @func.out_real(1, out_real_middle_band)
  out_real_lower_band = Array.new(len)
  @func.out_real(2, out_real_lower_band)

  @func.call(0, len - 1)

{:out_real_upper_band => out_real_upper_band,
  :out_real_middle_band => out_real_middle_band,
  :out_real_lower_band => out_real_lower_band}
end