Class: Csv

Inherits:
Object
  • Object
show all
Defined in:
lib/mdarray/csv.rb

Class Attribute Summary collapse

Class Method Summary collapse

Class Attribute Details

.epoch ⇒ Object (readonly)

Returns the value of attribute epoch.



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# File 'lib/mdarray/csv.rb', line 31

def epoch
  @epoch
end

Class Method Details

.read_numeric(filename, headers = false) ⇒ Object 



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# File 'lib/mdarray/csv.rb', line 38

def self.read_numeric(filename, headers = false)

  buffer = Array.new
  heading = Array.new
  lines = 0
  columns = nil

  CSV.foreach(filename,  
              {return_headers: false, 
                # headers: true,
                converters: [:numeric, :date]} ) do |row|

    if (headers)
      headers = false
      heading << row
      next
    end

    columns ||= row.size
    lines += 1

    row.each do |data|

      if (row.size != columns)
        raise "Data does not have the same number of columns for all lines"
      end

      # if it is a Date, then convert it to seconds since epoch
      if (data.is_a? Date)
        buffer << data.to_time.to_i
      end

      if (data.is_a? Numeric)
        buffer << data
      end
    end

  end

  [lines, columns, buffer, heading]

end