FieldTrip

Note that this reference documentation is identical to the help that is displayed in Matlab when you type “help ft_freqcomparison”.

  FT_FREQCOMPARISON performs a comparison between two (rpt-/subj-)
  chan-freq datasets.
 
  Differently from ft_freqbaseline, ft_freqcomparison requires two datasets
  for input arguments (n==2) where the first dataset is considered the norm.
  The output contains the difference of the second dataset to this norm,
  expressed in units as determined by cfg.comparisontype.
 
  Use as
    [freq] = ft_freqcomparison(cfg, dataset1, dataset2);
 
  where the freq data comes from FT_SPECEST_MTMFFT and the configuration
  should contain
 
    cfg.comparisontype = 'absolute' 'relchange' 'relative' (default =
    'absolute')
 
  See also FT_FREQBASELINE, FT_FREQANALYSIS, FT_TIMELOCKBASELINE