code: def __draw_two_dimension_data(ax, data, pair):
          
          ax.set_xlabel("x%d" % pair[0])
          ax.set_ylabel("x%d" % pair[1])
  
          for point in data:
              if len(data[0]) > 1:
                  ax.plot(point[pair[0]], point[pair[1]], color='red', marker='.')
              else:
                  ax.plot(point[pair[0]], 0, color='red', marker='.')
                  ax.yaxis.set_ticklabels([])
docs: !
          @brief Display data in two-dimensional canvas.
  
          @param[in] ax (Axis): Canvas where data should be displayed.
          @param[in] data (list): Data points that should be displayed.
          @param[in] pair (tuple): Pair of dimension indexes.