[FieldTrip] (no subject)

[victoria schroeder]

Dear Fieldtrip team,

I am currently working on data acquired from an elektra system (neuromag).
I have done all the preprocessing and the ft_freqanalysis with the
gradiometers only. I combined the gradiometers to create planar
gradients.However , later when doing the statistics problems occur when i
want to specify the channels. The error tells me that no degrees of freedom
are found for the analysis. However, when i remove the cfg.channel form the
script it runs through without an error. (please see code below).
My question is whether the output of the stastistic is correct without
specifying the channels? If not, does anybody have suggestions how to fix
the problem?

I have run into similar problems when wanting to plot the time frequency
data from the planar gradients after having used ft_combineplanar. Here i
cannot find a layout file that suits the output of ft_combineplanar. Thus,
i cannot specify a cfg.layout. After ft_combineplanar i have 102 channels,
however, the layouts provided by fieldtrip does not fit that number.
Has anybody run into similar problems? Or does anybody know a possible
solution?

Thank you very much for any suggestions
Victoria

%combine planar
cfg = [];
cfg.method ='sum';
%ComCon = ft_combineplanar(cfg,FreqCon);
ComIncon = ft_combineplanar(cfg, FreqIncon);

cfg = [];
%cfg.channel          = {'MEG'};
cfg.latency          = 'all';
cfg.frequency        = [14.5 16];
cfg.method           = 'montecarlo';
cfg.statistic        = 'ft_statfun_indepsamplesT';
cfg.correctm         = 'cluster';
cfg.clusteralpha     = 0.05;
cfg.clusterstatistic = 'maxsum';
cfg.minnbchan        = 2;
cfg.tail             = 0;
cfg.clustertail      = 0;
cfg.alpha            = 0.025;
cfg.numrandomization = 500;
cfg_neighb.method    = 'distance';
cfg.neighbours       = ft_prepare_neighbours(cfg_neighb, data_orig);

design = zeros(1,size(ComGrad_con.powspctrm,1) +
size(ComGrad_incon.powspctrm,1));
design(1,1:size(ComGrad_con.powspctrm,1)) = 1;
design(1,(size(ComGrad_con.powspctrm,1)+1):(size(ComGrad_con.powspctrm,1)+...
  size(ComGrad_incon.powspctrm,1))) = 2;
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