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<p class="MsoNormal"><span style="font-size:11.0pt;font-family:"Calibri",sans-serif;mso-fareast-language:EN-US">Hi Tao,<o:p></o:p></span></p>
<p class="MsoNormal"><span style="font-size:11.0pt;font-family:"Calibri",sans-serif;mso-fareast-language:EN-US"><o:p> </o:p></span></p>
<p class="p1"><span style="font-size:11.0pt;font-family:"Calibri",sans-serif;mso-fareast-language:EN-US">I am not sure about the cfg.neighbours setting, but the error looks like a SPM version issue I had before as well. I solved it by adding:
<o:p></o:p></span></p>
<p class="p1"><span style="font-size:10.0pt">cfg.spmversion </span><span class="apple-converted-space"><span style="font-size:10.0pt">
</span></span><span style="font-size:10.0pt">= <span class="s1">'spm12'</span>;<o:p></o:p></span></p>
<p class="MsoNormal"><span style="font-size:11.0pt;font-family:"Calibri",sans-serif;mso-fareast-language:EN-US"><o:p> </o:p></span></p>
<p class="MsoNormal"><span style="font-size:11.0pt;font-family:"Calibri",sans-serif;mso-fareast-language:EN-US">regards,<o:p></o:p></span></p>
<p class="MsoNormal"><span style="font-size:11.0pt;font-family:"Calibri",sans-serif;mso-fareast-language:EN-US"><o:p> </o:p></span></p>
<p class="MsoNormal"><span style="font-size:11.0pt;font-family:"Calibri",sans-serif;mso-fareast-language:EN-US">Xavier<o:p></o:p></span></p>
<p class="MsoNormal"><span style="font-size:11.0pt;font-family:"Calibri",sans-serif;mso-fareast-language:EN-US"><o:p> </o:p></span></p>
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<p class="MsoNormal"><b><span style="font-size:12.0pt;color:black">From: </span></b><span style="font-size:12.0pt;color:black">fieldtrip <fieldtrip-bounces@science.ru.nl> on behalf of Tao Wang <wangtao0331@tju.edu.cn><br>
<b>Reply to: </b>FieldTrip discussion list <fieldtrip@science.ru.nl><br>
<b>Date: </b>Friday, 24 July 2020 at 3:26 AM<br>
<b>To: </b>"fieldtrip@science.ru.nl" <fieldtrip@science.ru.nl><br>
<b>Subject: </b>[FieldTrip] Help with ft_sourcestatistics input<o:p></o:p></span></p>
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<p class="MsoNormal"><span style="font-size:11.0pt"><o:p> </o:p></span></p>
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<p class="MsoNormal"><span lang="EN-US">Dear community,</span><o:p></o:p></p>
<p class="MsoNormal"><span lang="EN-US"> </span><o:p></o:p></p>
<p class="MsoNormal"><span lang="EN-US">My name is Tao Wang and I study at Tianjin University. My research direction is to explore ways(tDCS\tACS) to improve working memory. I</span><span lang="EN-GB">’</span><span lang="EN-US">m looking to perform a cluster-based
permutation test on my source data(the result from ft_sourceanalysis).</span><o:p></o:p></p>
<p class="MsoNormal"><span lang="EN-US"> </span><o:p></o:p></p>
<p class="MsoNormal"><span lang="EN-US">I carefully read the function help and the tutorial(<a href="http://www.fieldtriptoolbox.org/example/source_statistics/">http://www.fieldtriptoolbox.org/example/source_statistics/</a>). However, I receive the following
error message:</span><o:p></o:p></p>
<p class="MsoNormal"><span lang="EN-US"> </span><o:p></o:p></p>
<p class="MsoNormal" style="margin-left:21.0pt;mso-para-margin-left:2.0gd"><span lang="EN-US">Error using spm_bwlabel</span><o:p></o:p></p>
<p class="MsoNormal" style="margin-left:21.0pt;mso-para-margin-left:2.0gd"><span lang="EN-US">spm_bwlabel: CONN must be 6, 18 or 26</span><o:p></o:p></p>
<p class="MsoNormal" style="margin-left:21.0pt;mso-para-margin-left:2.0gd"><span lang="EN-US">Error in clusterstat (line 191)</span><o:p></o:p></p>
<p class="MsoNormal" style="margin-left:21.0pt;mso-para-margin-left:2.0gd"><span lang="EN-US"> [posclusobs, posnum] = spm_bwlabel(tmp, 2*numdims);</span><o:p></o:p></p>
<p class="MsoNormal" style="margin-left:21.0pt;mso-para-margin-left:2.0gd"><span lang="EN-US">Error in ft_statistics_montecarlo (line 353)</span><o:p></o:p></p>
<p class="MsoNormal" style="margin-left:21.0pt;mso-para-margin-left:2.0gd"><span lang="EN-US"> [stat, cfg] = clusterstat(cfg, statrand, statobs);</span><o:p></o:p></p>
<p class="MsoNormal" style="margin-left:21.0pt;mso-para-margin-left:2.0gd"><span lang="EN-US">Error in ft_sourcestatistics (line 202)</span><o:p></o:p></p>
<p class="MsoNormal" style="margin-left:21.0pt;mso-para-margin-left:2.0gd"><span lang="EN-US"> [stat, cfg] = statmethod(cfg, dat, design);</span><o:p></o:p></p>
<p class="MsoNormal" style="margin-left:21.0pt;mso-para-margin-left:2.0gd"><span lang="EN-US"> </span><o:p></o:p></p>
<p class="MsoNormal"><span lang="EN-US">I am running the following: </span><o:p></o:p></p>
<p class="MsoNormal" style="text-indent:10.5pt"><span lang="EN-US">cfg=[];</span><o:p></o:p></p>
<p class="MsoNormal" style="margin-left:10.5pt;mso-para-margin-left:1.0gd"><span lang="EN-US">cfg.parameter='pow';</span><o:p></o:p></p>
<p class="MsoNormal" style="margin-left:10.5pt;mso-para-margin-left:1.0gd"><span lang="EN-US">cfg.method='montecarlo';</span><o:p></o:p></p>
<p class="MsoNormal" style="margin-left:10.5pt;mso-para-margin-left:1.0gd"><span lang="EN-US">cfg.statistic = 'ft_statfun_depsamplesT';</span><o:p></o:p></p>
<p class="MsoNormal" style="margin-left:10.5pt;mso-para-margin-left:1.0gd"><span lang="EN-US">cfg.correctm = 'cluster';</span><o:p></o:p></p>
<p class="MsoNormal" style="margin-left:10.5pt;mso-para-margin-left:1.0gd"><span lang="EN-US">cfg.clusteralpha = 0.05;</span><o:p></o:p></p>
<p class="MsoNormal" style="margin-left:10.5pt;mso-para-margin-left:1.0gd"><span lang="EN-US">cfg.clusterstatistic = 'maxsum';</span><o:p></o:p></p>
<p class="MsoNormal" style="margin-left:10.5pt;mso-para-margin-left:1.0gd"><span lang="EN-US">cfg.tail=0;</span><o:p></o:p></p>
<p class="MsoNormal" style="margin-left:10.5pt;mso-para-margin-left:1.0gd"><span lang="EN-US">cfg.clustertail=0;</span><o:p></o:p></p>
<p class="MsoNormal" style="margin-left:10.5pt;mso-para-margin-left:1.0gd"><span lang="EN-US">cfg.alpha=0.025;</span><o:p></o:p></p>
<p class="MsoNormal" style="margin-left:10.5pt;mso-para-margin-left:1.0gd"><span lang="EN-US">cfg.numrandomization = 1000;</span><o:p></o:p></p>
<p class="MsoNormal" style="margin-left:10.5pt;mso-para-margin-left:1.0gd"><span lang="EN-US">nsubj = 10;</span><o:p></o:p></p>
<p class="MsoNormal" style="margin-left:10.5pt;mso-para-margin-left:1.0gd"><span lang="EN-US">cfg.design(1,:) = [1:nsubj 1:nsubj];</span><o:p></o:p></p>
<p class="MsoNormal" style="margin-left:10.5pt;mso-para-margin-left:1.0gd"><span lang="EN-US">cfg.design(2,:) = [ones(1,nsubj)*1 ones(1,nsubj)*2];</span><o:p></o:p></p>
<p class="MsoNormal" style="margin-left:10.5pt;mso-para-margin-left:1.0gd"><span lang="EN-US">cfg.uvar = 1; % row of design matrix that contains unit variable (in this case: subjects)</span><o:p></o:p></p>
<p class="MsoNormal" style="margin-left:10.5pt;mso-para-margin-left:1.0gd"><span lang="EN-US">cfg.ivar = 2; % row of design matrix that contains independent variable (the conditions)</span><o:p></o:p></p>
<p class="MsoNormal" style="margin-left:10.5pt;mso-para-margin-left:1.0gd"><span lang="EN-US"> </span><o:p></o:p></p>
<p class="MsoNormal" style="margin-left:10.5pt;mso-para-margin-left:1.0gd"><span lang="EN-US">stat = ft_sourcestatistics(cfg, grandavgA{:}, grandavgB{:});</span><o:p></o:p></p>
<p class="MsoNormal" style="margin-left:10.5pt;mso-para-margin-left:1.0gd"><span lang="EN-US"> </span><o:p></o:p></p>
<p class="MsoNormal"><span lang="EN-US">My data:</span><o:p></o:p></p>
<p class="MsoNormal" style="margin-left:10.5pt;mso-para-margin-left:1.0gd"><span lang="EN-US">display (grandavgA{1})</span><o:p></o:p></p>
<p class="MsoNormal" style="margin-left:10.5pt;mso-para-margin-left:1.0gd"><span lang="EN-US">time: [1</span><span lang="EN-GB">×</span><span lang="EN-US">400 double]</span><o:p></o:p></p>
<p class="MsoNormal" style="margin-left:10.5pt;mso-para-margin-left:1.0gd"><span lang="EN-US">inside: [8196</span><span lang="EN-GB">×</span><span lang="EN-US">1 logical]</span><o:p></o:p></p>
<p class="MsoNormal" style="margin-left:10.5pt;mso-para-margin-left:1.0gd"><span lang="EN-US">pos: [8196</span><span lang="EN-GB">×</span><span lang="EN-US">3 double]</span><o:p></o:p></p>
<p class="MsoNormal" style="margin-left:10.5pt;mso-para-margin-left:1.0gd"><span lang="EN-US">tri: [16384</span><span lang="EN-GB">×</span><span lang="EN-US">3 double]</span><o:p></o:p></p>
<p class="MsoNormal" style="margin-left:10.5pt;mso-para-margin-left:1.0gd"><span lang="EN-US">method: 'average'</span><o:p></o:p></p>
<p class="MsoNormal" style="margin-left:10.5pt;mso-para-margin-left:1.0gd"><span lang="EN-US">avg: [1</span><span lang="EN-GB">×</span><span lang="EN-US">1 struct]</span><o:p></o:p></p>
<p class="MsoNormal" style="margin-left:10.5pt;mso-para-margin-left:1.0gd"><span lang="EN-US">cfg: [1</span><span lang="EN-GB">×</span><span lang="EN-US">1 struct]</span><o:p></o:p></p>
<p class="MsoNormal" style="margin-left:10.5pt;mso-para-margin-left:1.0gd"><span lang="EN-US">display(grandavgA{1}.avg)</span><o:p></o:p></p>
<p class="MsoNormal"><span lang="EN-US"> mom: {1</span><span lang="EN-GB">×</span><span lang="EN-US">8196 cell}</span><o:p></o:p></p>
<p class="MsoNormal"><span lang="EN-US"> pow: [8196</span><span lang="EN-GB">×</span><span lang="EN-US">1 double] %I used
</span><span lang="EN-GB">‘</span><span lang="EN-US">8196</span><span lang="EN-GB">×</span><span lang="EN-US">1 double</span><span lang="EN-GB">’</span><span lang="EN-US"> instead of
</span><span lang="EN-GB">‘</span><span lang="EN-US">8196</span><span lang="EN-GB">×</span><span lang="EN-US">400 double</span><span lang="EN-GB">’</span><o:p></o:p></p>
<p class="MsoNormal"><span lang="EN-US"> noisecov: {1</span><span lang="EN-GB">×</span><span lang="EN-US">8196 cell}</span><o:p></o:p></p>
<p class="MsoNormal"><span lang="EN-US"> </span><o:p></o:p></p>
<p class="MsoNormal"><span lang="EN-US">Do I need to set cfg.neighbours, like the settings in the tutorial "Cluster-based permutation tests on event related fields"? (I noticed cfg.dim, but it doesn</span><span lang="EN-GB">’</span><span lang="EN-US">t appear
in my source struct)</span><o:p></o:p></p>
<p class="MsoNormal"><span lang="EN-US">Can someone tell me if there is something wrong with the cfg settings I use or if I am doing something wrong at any other place? Any tips anyone has would be very much appreciated!</span><o:p></o:p></p>
<p class="MsoNormal"><span lang="EN-US">Hope that helps!</span><o:p></o:p></p>
<p class="MsoNormal"><span lang="EN-US"> </span><o:p></o:p></p>
<p class="MsoNormal"><span lang="EN-US"> Best,</span><o:p></o:p></p>
<p class="MsoNormal"><span lang="EN-US"> Tao</span><o:p></o:p></p>
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