# File lib/chart-candy/builder/line.rb, line 9
  def add_dot(dot, id, x_name, y_name)
    {
      x: dot[x_name],
      y: dot[y_name],
      label_x: add_dot_label(id, dot[x_name], @chart[:axis][:x][:nature]),
      label_y: add_dot_label(id, dot[y_name], @chart[:axis][:y][:nature])
    }
  end