Class: Indicators::Main

Inherits:
Object
  • Object
show all
Defined in:
lib/indicators/main.rb

Overview

Moving averages

Defined Under Namespace

Classes: MainException

Class Method Summary collapse

Class Method Details

.calculate(data, parameters) ⇒ Object 



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# File 'lib/indicators/main.rb', line 10

def self.calculate data, parameters
			if data.is_a?(Hash)
    results = Hash.new
    data.each do |symbol, stock_data|
      # Check if this symbol was empty and don't go further with it.
      if stock_data.length == 0
        results[symbol] = []
      else
        results[symbol] = case parameters[:type]
                            when :sma then sma(Indicators::Parser.parse_data(stock_data), parameters[:variables])
                            when :ema then ema(Indicators::Parser.parse_data(stock_data), parameters[:variables])
                            when :bb then bb(Indicators::Parser.parse_data(stock_data), parameters[:variables])
                            when :macd then macd(Indicators::Parser.parse_data(stock_data), parameters[:variables])
                            when :rsi then rsi(Indicators::Parser.parse_data(stock_data), parameters[:variables])
                            when :sto then sto(Indicators::Parser.parse_data(stock_data), parameters[:variables])
                          end
        # Parser returns in {:date=>[2012.0, 2012.0, 2012.0], :open=>[409.4, 410.0, 414.95],} format
      end
    end
			else
results = case parameters[:type]
            when :sma then sma(data, parameters[:variables])
                when :ema then ema(data, parameters[:variables])
                when :bb then bb(data, parameters[:variables])
                when :macd then macd(data, parameters[:variables])
                when :rsi then rsi(data, parameters[:variables])
                when :sto then raise MainException, "You cannot calculate Stochastic Oscillator on closing prices. Use Securities hash instead."
          end
			end
			return results
end