Class: DataPoint

Inherits:
Object
  • Object
show all
Defined in:
lib/sp500_analyzer/data_point.rb

Constant Summary collapse

@@all = 
[]

Instance Attribute Summary collapse

Class Method Summary collapse

Instance Method Summary collapse

Constructor Details

#initialize ⇒ DataPoint

Returns a new instance of DataPoint.



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# File 'lib/sp500_analyzer/data_point.rb', line 9

def initialize
  @@all << self
end

Instance Attribute Details

#date ⇒ Object

Returns the value of attribute date.



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# File 'lib/sp500_analyzer/data_point.rb', line 7

def date
  @date
end

#historical_max ⇒ Object

Returns the value of attribute historical_max.



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# File 'lib/sp500_analyzer/data_point.rb', line 7

def historical_max
  @historical_max
end

#id ⇒ Object

Returns the value of attribute id.



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# File 'lib/sp500_analyzer/data_point.rb', line 7

def id
  @id
end

#max_date ⇒ Object

Returns the value of attribute max_date.



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# File 'lib/sp500_analyzer/data_point.rb', line 7

def max_date
  @max_date
end

#monthly_change ⇒ Object

Returns the value of attribute monthly_change.



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# File 'lib/sp500_analyzer/data_point.rb', line 7

def monthly_change
  @monthly_change
end

#price ⇒ Object

Returns the value of attribute price.



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# File 'lib/sp500_analyzer/data_point.rb', line 7

def price
  @price
end

#yearly_change ⇒ Object

Returns the value of attribute yearly_change.



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# File 'lib/sp500_analyzer/data_point.rb', line 7

def yearly_change
  @yearly_change
end

Class Method Details

.all ⇒ Object 



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# File 'lib/sp500_analyzer/data_point.rb', line 13

def self.all
  @@all
end

.find_by_date(date) ⇒ Object 



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# File 'lib/sp500_analyzer/data_point.rb', line 58

def self.find_by_date(date)
  date_array = date.split("/")
  all.detect do |datapoint|
    datapoint.date.month == date_array[0].to_i && datapoint.date.year == date_array[1].to_i
  end
end

.find_by_year(year) ⇒ Object 



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# File 'lib/sp500_analyzer/data_point.rb', line 52

def self.find_by_year(year)
  all.select do |datapoint|
    datapoint.date.year == year
  end
end

.set_historical_max ⇒ Object 



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# File 'lib/sp500_analyzer/data_point.rb', line 37

def self.set_historical_max
  all.each_with_index do |datapoint, index|
    loop_index = 0
    maximum = datapoint
    until loop_index >= index
      if all[loop_index].price >= maximum.price
        maximum = all[loop_index]
      end
      loop_index += 1
    end
    datapoint.historical_max = maximum
  end
  nil
end

Instance Method Details

#previous_month ⇒ Object 



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# File 'lib/sp500_analyzer/data_point.rb', line 17

def previous_month
  year = date.year
  month = date.month
  day = date.day
  if month == 1
    prev_month = 12
  else
    prev_month = month-1
  end
  Date.new(year, prev_month, day)
end

#previous_year ⇒ Object 



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# File 'lib/sp500_analyzer/data_point.rb', line 29

def previous_year
  year = date.year
  month = date.month
  day = date.day
  prev_year = year-1
  Date.new(year-1, month, day)
end