FieldTrip

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

  FT_DATATYPE_COMP describes the FieldTrip MATLAB structure for comp data
 
  The comp data structure represents time-series channel-level data that has
  been decomposed or unmixed from the channel level into its components or
  "blind sources", for example using ICA (independent component analysis) or
  PCA. This data structure is usually generated with the FT_COMPONENTANALYSIS
  function.
 
  An example of a comp data structure with 100 components that resulted from
  a 151-channel MEG recording is shown here:
 
           time: {1x10 cell}
          trial: {1x10 cell}
       unmixing: [100x151 double]
           topo: [151x100 double]
      topolabel: {151x1 cell}
          label: {100x1 cell}
        fsample: 300
            cfg: [1x1 struct]
 
  The only difference to the raw data structure is that the comp structure
  contains the additional fields topo and topolabel. See FT_DATATYPE_RAW for
  further details.
 
  Required fields:
    - time, trial, label, topo, unmixing
 
  Optional fields:
    - sampleinfo, trialinfo, grad, elec, hdr, cfg
 
  Deprecated fields:
    - fsample
 
  Obsoleted fields:
    - offset
 
  Revision history:
  (2011/latest) The unmixing matrix has been added to the component data
  structure.
 
  (2003) The initial version was defined
 
  See also FT_DATATYPE, FT_DATATYPE_COMP, FT_DATATYPE_DIP, FT_DATATYPE_FREQ,
  FT_DATATYPE_MVAR, FT_DATATYPE_RAW, FT_DATATYPE_SOURCE, FT_DATATYPE_SPIKE,
  FT_DATATYPE_TIMELOCK, FT_DATATYPE_VOLUME