FT_APPENDFREQ concatenates multiple frequency or time-frequency data structures
that have been processed separately. If the input data structures contain different
channels, it will be concatenated along the channel direction. If the channels are
identical in the input data structures, the data will be concatenated along the
repetition dimension.
Use as
combined = ft_appendfreq(cfg, freq1, freq2, ...)
The configuration should contain
cfg.parameter = string, the name of the field to concatenate
The configuration can optionally contain
cfg.appenddim = string, the dimension to concatenate over (default is automatic)
cfg.tolerance = scalar, tolerance to determine how different the frequency and/or
time axes are allowed to still be considered compatible (default = 1e-5)
To facilitate data-handling and distributed computing you can use
cfg.inputfile = ...
cfg.outputfile = ...
If you specify one of these (or both) the input data will be read from a
*.mat file on disk and/or the output data will be written to a *.mat file.
These mat files should contain only a single variable, corresponding with
the input/output structure.
See also FT_FREQANALYSIS, FT_DATATYPE_FREQ, FT_APPENDDATA, FT_APPENDTIMELOCK,
FT_APPENDSENS