#!/usr/bin/octave-cli --persist
  
  filename = argv(){1};
  col1 = eval(argv(){2});
  col2 = eval(argv(){3});
  mult1 = eval(argv(){4});
  mult2 = eval(argv(){5});
  
  if length(col1) == length(mult1)
      figure
      hold all
      grid on
      cc = 'bkcgmry';
      for i = [1:length(col1)]
          data.freq = load(filename)(:,col1(i)).*mult1(i);
          data.freq2 = load(filename)(:,col2(i)).*mult2(i);

          data.freq = data.freq(1:min(length(data.freq), length(data.freq2)));
          data.freq2 = data.freq2(1:min(length(data.freq), length(data.freq2)));

          if eval(argv(){end-1}) == 1
              printf('
  data1 drift removed
  
  ')
              data.freq = detrend(data.freq);
          end
          if eval(argv(){end}) == 1
              printf('
  data2 drift removed
  
  ')
              data.freq2 = detrend(data.freq2);
          end
          data.rate = 1;
          [ad, S, err, tau] = allan_cov(data, 2.^[0:nextpow2(length(data.freq))-3]./data.rate, strcat(strsplit(filename, '/'){end}, num2str(i)), 0);
          loglogerr(tau, ad, err, strcat(cc(mod(i, length(cc))), '-s'))
          leg{i} = strcat(filename, ' cov col', num2str(col1(i)), ' col', num2str(col2(i)));
          axis(10.^ceil(log10([tau(1), tau(end)])))
          hold on
      end
      legend(leg)
      input("Press to continue...");
  end
  exit