code: def start_chart(self):
          
          self.current_dataset_name = self.chart_name
          self.datafile.init_data(self.current_dataset_name, mode='continuous')
          self.chart_name = increment_title(self.chart_name)
          
          # stimulus tracker channel hard-coded at least chan for now
          self.player.start_continuous([self.aichan, u"PCI-6259/ai31"])
docs: Begin on-going chart style acqusition