problem with freqstatistics

[Oakman, Erin]

Hi,

 I am following the cluster-based statistics tutorial called cluster_permutation_freq, "within trial experiments."  When defining "baseline" and "activation" times with 1 subject,  I have an error using redefinetrial to choose the nonoverlapping and equal length trials.  For example,

 % redefine
  cfg = [];
  cfg.toilim = [-0.5 0];
  data_baseline = redefinetrial(cfg, data);
??? Error using ==> redefinetrial at 66
the trial definition is inconsistent with the data
 
Specifically, there is no trl field in my data.   Somehow the trl field was lost after channelrepair and appenddata.  However, it is possible to redefine the activation and baseline time manually.  Then I make the time-frequency files on baseline and activation, and test with freqstatistics:

 %freqstatistics with cluster
        cfg=[];
        cfg.method='montecarlo';
        cfg.statistic= 'actvsblT';
        cfg.parameter='powspctrm';      
        cfg.channel='all';
        cfg.avgoverchan='no';
        cfg.latency='all'; %[0.05 0.45];
        cfg.avgovertime='no';
        cfg.frequency=[39 41]; %'all';
        cfg.avgoverfreq='yes';     
        cfg.correctm='cluster';
        cfg.clusteralpha=0.05;
        cfg.clusterstatistic='maxsum';
        cfg.elecfile='/home/eo/science/layout/biosemi.sfp';
        cfg.neighbourdist=2.5;             
%         cfg.minnbchan=2; %default=0
        cfg.tail=0; %default=0
        cfg.alpha=0.05;
        cfg.numrandomization=500;
        stat = freqstatistics(cfg, data_baseline, data_activation);
??? Undefined variable "data" or class "data.biol".

Error in ==> prepare_design at 85
  nrepl=size(data.biol,1);

Error in ==> statistics_wrapper at 233
  [cfg] = prepare_design(cfg);

Error in ==> freqstatistics at 89
  [stat, cfg] = statistics_wrapper(cfg, varargin{:});


 The powspctrm field in data_baseline.powspctrm and data_activation.powspctrm is 4D (rptxchanxfreqxtime), and the rpt,freq,time, and label fields have the same dimensions.  Do I have to use redefinetrial before freqanalysis?  Any advice is appreciated.

Erin

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