[FieldTrip] problem with FT_MEGPLANAR

Nenad Polomac polomacnenad at gmail.com
Fri Sep 7 12:36:05 CEST 2012

Dear all,

I would like to apply FT_MEGPLANAR on ERF data obtain from
FT_TIMELOCKANALYSIS. According to tutorial that should be possible.

This is the error I get:
Error using ft_checkdata (line 376)
This function requires ctf151, ctf275, bti148, bti248, itab153, yokogawa160
yokogawa64 data as input, but you are giving ctf275 data.

Error in ft_megplanar (line 109)
data = ft_checkdata(data, 'datatype', {'raw' 'freq'}, 'feedback', 'yes',
'hassampleinfo', 'yes', 'ismeg', 'yes', 'senstype', {'ctf151', 'ctf275',
'bti248', 'itab153', 'yokogawa160', 'yokoga

This is how looks like output form FT_TIMELOCKANALYSIS. On this data I
would like to apply FT_MEGPLANAR.
average32 =

          avg: [271x1440 double]
          var: [271x1440 double]
         time: [1x1440 double]
          dof: [271x1440 double]
        label: {271x1 cell}
        trial: [75x271x1440 double]
       dimord: 'rpt_chan_time'
    trialinfo: [75x1 double]
          cfg: [1x1 struct]

My code:
cfg = [];
cfg.method    = 'template';
cfg.template      = 'CTF275_neighb.mat';
neighbours       = ft_prepare_neighbours(cfg, grad);

cfg.planarmethod = 'orig';
cfg.trials = 'all';
planar32 = ft_megplanar(cfg, average32);

*grad is structure obtained earlier with FT_PREPROCESSING

Furthermore, I would also like to apply FT_MEGPLANAR on the other data
obtained from ft_rejectcomponent (after ICA rejection) and this doesn't
work as well. This error is the same as one I mentioned above.

Thank you in advance!

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