[FieldTrip] converting magnetometers

[victoria schroeder]

Hello,

Is it possible to convert magnetometers to pseudo-gradiometers to create
planar gradients? We are working with Neuromag data. The following code
does not work, since i get the error message that ft_megplanar() does not
function with neuromag data.

cfg              = [];
cfg.feedback     = 'no';
cfg.method       = 'distance';
cfg.planarmethod = 'sincos';
cfg.channel      = {'MEGMAG'};
cfg.trials       = 'all';
cfg.neighbours   = ft_prepare_neighbours(cfg, rspdata);
data_mag      = ft_megplanar(cfg,rspdata);

Cheers
Victoria
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