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

  FT_PLOT_MONTAGE makes a montage of a 3-D array by selecting slices at regular distances
  and combining them in one large 2-D image.  Note that the montage of MRI slices is not to
  be confused with the EEG montage, which is a way of specifying the reference scheme
  between electrodes.
  Use as
    ft_plot_montage(dat, ...)
  where dat is a 3-D array.
  Additional options should be specified in key-value pairs and can be
    'transform'     = 4x4 homogeneous transformation matrix specifying the mapping from voxel space to the coordinate system in which the data are plotted.
    'location'      = 1x3 vector specifying a point on the plane which will be plotted the coordinates are expressed in the coordinate system in which the data will be plotted. location defines the origin of the plane
    'orientation'   = 1x3 vector specifying the direction orthogonal through the plane which will be plotted (default = [0 0 1])
    'srange'        = 
    'slicesize'     = 
    'nslice'        = scalar, number of slices
    'maskstyle'     = string, 'opacity' or 'colormix', defines the rendering
    'background'    = needed when maskstyle is 'colormix', 3D-matrix with
                      the same size as the data matrix, serving as
                      grayscale image that provides the background