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Hi David,
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<div class="">Have you checked whether this could be due to a potential typo in the specification of your cfg.channel (e.g.: CZ versus Cz)?</div>
<div class="">Best,</div>
<div class="">Jan-Mathijs</div>
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<blockquote type="cite" class="">
<div class="">On 6 Sep 2017, at 16:48, David <<a href="mailto:preted@mcmaster.ca" class="">preted@mcmaster.ca</a>> wrote:</div>
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Hello everyone,<span class="Apple-converted-space"> </span></div>
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I am running into an error when I try to compute the cluster based permutation test in the frequency-time domain comparing baseline to when the stimulus is present. I’ve calculated the power for 300 milliseconds (1 millisecond is equal to one time point) before
the onset of the stimulus and 300ms during the stimulus for a range of 10 frequencies. The error I’m running into is stated below as well as my code and I’ve attached an image of what the data looks like. I’ve tried following the tutorials and searching through
the mailing list and can’t seem to find a solution. Has anyone else run into this problem and found a solution or am I making an error somewhere in my analysis?</div>
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<o:p class=""> </o:p></div>
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MY CODE:</div>
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cfg = [];</div>
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cfg.channel = 'CZ';</div>
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cfg.latency = [0.1 0.4];</div>
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cfg.method = 'montecarlo';</div>
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cfg.frequency = 'all';</div>
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cfg.statistic = 'ft_statfun_actvsblT';</div>
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cfg.correctm = 'cluster';</div>
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cfg.clusteralpha = 0.05;</div>
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cfg.clusterstatistic = 'maxsum';</div>
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cfg.tail = 0;</div>
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cfg.clustertail = 0;</div>
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cfg.alpha = 0.025;</div>
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cfg.numrandomization = 500;</div>
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<o:p class=""> </o:p></div>
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ntrials = size(TFR_FFR.powspctrm,1);</div>
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design = zeros(2,2*ntrials);</div>
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design(1,1:ntrials) = 1;</div>
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design(1,ntrials+1:2*ntrials) = 2;</div>
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design(2,1:ntrials) = [1:ntrials];</div>
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design(2,ntrials+1:2*ntrials) = [1:ntrials];</div>
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cfg.design = design;</div>
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cfg.ivar = 1;</div>
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cfg.uvar = 2;</div>
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TFR_FFR_stat = ft_freqstatistics(cfg, TFR_FFR, TFR_FFRbaseline);</div>
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THE ERROR MESSAGE:</div>
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“Error using reshape</div>
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To RESHAPE the number of elements must not change.</div>
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Error in ft_statfun_actvsblT (line 115)</div>
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timeavgdat=repmat(reshape(meanreshapeddat,(nchan*nfreq),nrepl),ntime,1);</div>
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Error in ft_statistics_montecarlo (line 267)</div>
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[statobs, cfg] = statfun(cfg, dat, design);</div>
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Error in ft_freqstatistics (line 194)</div>
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[stat, cfg] = statmethod(cfg, dat, design);</div>
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Error in TFRClusterBasedStats (line 54)</div>
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TFR_FFR_stat = ft_freqstatistics(cfg, TFR_FFR,</div>
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TFR_FFRbaseline);”</div>
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Thank you,</div>
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David Prete<br class="">
Ph.D. Candidate<span class="Apple-converted-space"> </span><br class="">
McMaster Institute for Music and the Mind<br class="">
Department Psychology, Neuroscience and Behaviour<span class="Apple-converted-space"> </span><br class="">
McMaster University</div>
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<span id="cid:B57383C8-BDC7-4E9D-A624-2DD127907E04@home"><Screenshot (16).png></span><span style="font-family: Helvetica; font-size: 12px; font-style: normal; font-variant-caps: normal; font-weight: normal; letter-spacing: normal; text-align: start; text-indent: 0px; text-transform: none; white-space: normal; word-spacing: 0px; -webkit-text-stroke-width: 0px; float: none; display: inline !important;" class="">_______________________________________________</span><br style="font-family: Helvetica; font-size: 12px; font-style: normal; font-variant-caps: normal; font-weight: normal; letter-spacing: normal; text-align: start; text-indent: 0px; text-transform: none; white-space: normal; word-spacing: 0px; -webkit-text-stroke-width: 0px;" class="">
<span style="font-family: Helvetica; font-size: 12px; font-style: normal; font-variant-caps: normal; font-weight: normal; letter-spacing: normal; text-align: start; text-indent: 0px; text-transform: none; white-space: normal; word-spacing: 0px; -webkit-text-stroke-width: 0px; float: none; display: inline !important;" class="">fieldtrip
mailing list</span><br style="font-family: Helvetica; font-size: 12px; font-style: normal; font-variant-caps: normal; font-weight: normal; letter-spacing: normal; text-align: start; text-indent: 0px; text-transform: none; white-space: normal; word-spacing: 0px; -webkit-text-stroke-width: 0px;" class="">
<a href="mailto:fieldtrip@donders.ru.nl" style="font-family: Helvetica; font-size: 12px; font-style: normal; font-variant-caps: normal; font-weight: normal; letter-spacing: normal; orphans: auto; text-align: start; text-indent: 0px; text-transform: none; white-space: normal; widows: auto; word-spacing: 0px; -webkit-text-size-adjust: auto; -webkit-text-stroke-width: 0px;" class="">fieldtrip@donders.ru.nl</a><br style="font-family: Helvetica; font-size: 12px; font-style: normal; font-variant-caps: normal; font-weight: normal; letter-spacing: normal; text-align: start; text-indent: 0px; text-transform: none; white-space: normal; word-spacing: 0px; -webkit-text-stroke-width: 0px;" class="">
<a href="https://mailman.science.ru.nl/mailman/listinfo/fieldtrip" style="font-family: Helvetica; font-size: 12px; font-style: normal; font-variant-caps: normal; font-weight: normal; letter-spacing: normal; orphans: auto; text-align: start; text-indent: 0px; text-transform: none; white-space: normal; widows: auto; word-spacing: 0px; -webkit-text-size-adjust: auto; -webkit-text-stroke-width: 0px;" class="">https://mailman.science.ru.nl/mailman/listinfo/fieldtrip</a></div>
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