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

  FT_ARTIFACT_NAN identifies artifacts that are indicated in the data as nan (not a
  number) values.
 
  Use as
    [cfg, artifact] = ft_artifact_nan(cfg, data)
  where the input data is a structure as obtained from FT_REJECTARTIFACT with
  the option cfg.artfctdef.reject='nan'.
 
  The configuration can contain
    cfg.artfctdef.nan.channel = Nx1 cell-array with selection of channels, see FT_CHANNELSELECTION for details
 
  The output argument "artifact" is a Nx2 matrix comparable to the
  "trl" matrix of FT_DEFINETRIAL. The first column of which specifying the
  beginsamples of an artifact period, the second column contains the
  endsamples of the artifactperiods.
 
  To facilitate data-handling and distributed computing you can use
    cfg.inputfile   =  ...
  If you specify this option the input data will be read from a *.mat
  file on disk. This mat files should contain only a single variable named 'data',
  corresponding to the input structure.
 
  See also FT_REJECTARTIFACT, FT_ARTIFACT_CLIP, FT_ARTIFACT_ECG, FT_ARTIFACT_EOG,
  FT_ARTIFACT_JUMP, FT_ARTIFACT_MUSCLE, FT_ARTIFACT_THRESHOLD, FT_ARTIFACT_ZVALUE