FT_COMBINEPLANAR
Note that this reference documentation is identical to the help that is displayed in MATLAB when you type “help ft_combineplanar”.
FT_COMBINEPLANAR computes the planar gradient magnitude over both directions combining the two gradients at each sensor to a single positive-valued number. This can be done for single-trial/averaged planar gradient ERFs or single-trial/averaged TFRs. Use as [data] = ft_combineplanar(cfg, data) where data contains an averaged planar gradient ERF or single-trial/averaged TFR. The configuration can contain cfg.method = 'sum', 'svd', 'abssvd', or 'complex' (default = 'sum') cfg.updatesens = 'no' or 'yes' (default = 'yes') and for timelocked input data (i.e. ERFs), the configuration can also contain cfg.demean = 'yes' or 'no' (default = 'no') cfg.baselinewindow = [begin end] 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_MEGPLANAR