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

  FT_INTERACTIVEREALIGN allows the user to interactively translate, rotate and scale an
  individual geometrical object to a template geometrical object. It can for example be used
  to align EEG electrodes to a model of the scalp surface.
 
  Use as
    [cfg] = ft_interactiverealign(cfg)
 
  The configuration structure should contain the individuals geometrical object that
  has to be realigned
    cfg.individual.elec           = structure
    cfg.individual.grad           = structure
    cfg.individual.headmodel      = structure, see FT_PREPARE_HEADMODEL
    cfg.individual.headshape      = structure, see FT_READ_HEADSHAPE
    cfg.individual.mri            = structure, see FT_READ_MRI
  You can specify the style with which the objects are displayed using
    cfg.individual.headmodelstyle = 'vertex', 'edge', 'surface' or 'both' (default = 'edge')
    cfg.individual.headshapestyle = 'vertex', 'edge', 'surface' or 'both' (default = 'vertex')
 
  The configuration structure should also contain the geometrical object of a
  template that serves as target
    cfg.template.axes           = string, 'yes' or 'no (default = 'no')
    cfg.template.elec           = structure
    cfg.template.grad           = structure
    cfg.template.headmodel      = structure, see FT_PREPARE_HEADMODEL
    cfg.template.headshape      = structure, see FT_READ_HEADSHAPE
    cfg.template.mri            = structure, see FT_READ_MRI
  You can specify the style with which the objects are displayed using
    cfg.template.headmodelstyle = 'vertex', 'edge', 'surface' or 'both' (default = 'edge')
    cfg.template.headshapestyle = 'vertex', 'edge', 'surface' or 'both' (default = 'vertex')
 
  You can specify one or multiple individual objects which will all be realigned and
  one or multiple template objects.
 
  See also FT_VOLUMEREALIGN, FT_ELECTRODEREALIGN, FT_DETERMINE_COORDSYS,
  FT_READ_SENS, FT_READ_VOL, FT_READ_HEADSHAPE