module Indicators

# File lib/moving_average.rb, line 2
    def ma(values, options={})
            opts = {:period => 5}.merge(options)

    return nil if opts[:period] > values.size

    ma = []
    result = []
    sum = 0
    values.each do |value|
            leaving_value = ma.length == opts[:period] ? ma.shift : 0
            sum += value - leaving_value
            ma << value
            result << { :value => value, :ma => ma.length == opts[:period] ? sum/opts[:period] : 0 }
    end

result
    end