[FieldTrip] cluster plot

[Zsolt Turi]

Dear Filedtrip users,

I recently performed a non-parametric cluster-based permutation test on
time-frequency data using a within-subjects design. I have two related
questions/issues:

1) Size issues:

For 11 participants the size of the file containing the time-frequency
grand averages is 1.4 GB for each condition (I have two conditions), which
is really hard to load in for the permutation test. Is this size reasonable?


powspctrm: [4-D double]
        label: {64x1 cell}
         freq: [1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20]
         time: [1x26 double]
       dimord: 'subj_chan_freq_time'
          cfg: [1x1 struct]


2) Cluster plot issue:

Related to the first issue, after generating the plots for the stat, the
computer stops responding and it is impossible to save the figure or even
close it.

cfg = [];
cfg.alpha  = 0.05;
cfg.parameter = 'stat';
cfg.zlim   = [-4 4];
cfg.layout = 'EEG1010.lay';
ft_clusterplot(cfg, stat);

Have some of you encountered such kind of issues?


I use 64 bit Win 7 OS, 8 GB RAM, Intel Core i5 CPU, 9.0.0.341360 (R2016a)
Matlab and fieldtrip-20160424 versions.

Thanks for your help in advance!

Zsolt
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