def parse(node)
      @list = node.xpath('c:f')[0].text.split('!').first
      coordinates = Coordinates.parser_coordinates_range(node.xpath('c:f')[0].text) # .split('!')[1].gsub('$', ''))
      return self unless coordinates

      node.xpath('c:numCache/c:pt').each_with_index do |point_node, index|
        point = ChartPoint.new(coordinates[index])
        point.value = point_node.xpath('c:v').first.text.to_f unless point_node.xpath('c:v').first.nil?
        @points << point
      end
      self
    end
def parse(node)
      @list = node.xpath('c:f')[0].text.split('!').first
      coordinates = Coordinates.parser_coordinates_range(node.xpath('c:f')[0].text) # .split('!')[1].gsub('$', ''))
      return self unless coordinates

      node.xpath('c:numCache/c:pt').each_with_index do |point_node, index|
        point = ChartPoint.new(coordinates[index])
        point.value = point_node.xpath('c:v').first.text.to_f unless point_node.xpath('c:v').first.nil?
        @points << point
      end
      self
    end
Parse ChartCellsRange object
 @param node [Nokogiri::XML:Element] node to parse
 @return [ChartCellsRange] result of parsing