code: def add_stats_plot(self):
          
  
          keys = OrderedDict()
          keys['species_a'] = {'color': '#437bb1', 'name': 'Species a'}
          keys['species_b'] = {'color': '#b1084c', 'name': 'Species b'}
          keys['ambiguous'] = {'color': '#333333', 'name': 'Ambiguous'}
  
          plot_config = {
              'id': "disambiguated_alignments",
              'title': "Disambiguate: Alignment Counts",
              'cpswitch_counts_label': "# Reads",
              'ylab': "# Reads"
          }
  
          self.add_section(
              plot=bargraph.plot(self.data, keys, plot_config)
          )
docs: Plots alignment stats as bargraph.