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</o:shapelayout></xml><![endif]--></head><body lang=ZH-CN link="#0563C1" vlink="#954F72" style='text-justify-trim:punctuation'><div class=WordSection1><p class=MsoNormal><span lang=EN-US>Dear community,<o:p></o:p></span></p><p class=MsoNormal><span lang=EN-US><o:p> </o:p></span></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’m looking to perform a cluster-based permutation test on my source data(the result from ft_sourceanalysis).<o:p></o:p></span></p><p class=MsoNormal><span lang=EN-US><o:p> </o:p></span></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:<o:p></o:p></span></p><p class=MsoNormal><span lang=EN-US><o:p> </o:p></span></p><p class=MsoNormal style='margin-left:21.0pt;mso-para-margin-left:2.0gd'><span lang=EN-US>Error using spm_bwlabel<o:p></o:p></span></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<o:p></o:p></span></p><p class=MsoNormal style='margin-left:21.0pt;mso-para-margin-left:2.0gd'><span lang=EN-US>Error in clusterstat (line 191)<o:p></o:p></span></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);<o:p></o:p></span></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)<o:p></o:p></span></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);<o:p></o:p></span></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)<o:p></o:p></span></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);<o:p></o:p></span></p><p class=MsoNormal style='margin-left:21.0pt;mso-para-margin-left:2.0gd'><span lang=EN-US><o:p> </o:p></span></p><p class=MsoNormal><span lang=EN-US>I am running the following: <o:p></o:p></span></p><p class=MsoNormal style='text-indent:10.5pt'><span lang=EN-US>cfg=[];<o:p></o:p></span></p><p class=MsoNormal style='margin-left:10.5pt;mso-para-margin-left:1.0gd'><span lang=EN-US>cfg.parameter='pow';<o:p></o:p></span></p><p class=MsoNormal style='margin-left:10.5pt;mso-para-margin-left:1.0gd'><span lang=EN-US>cfg.method='montecarlo';<o:p></o:p></span></p><p class=MsoNormal style='margin-left:10.5pt;mso-para-margin-left:1.0gd'><span lang=EN-US>cfg.statistic = 'ft_statfun_depsamplesT';<o:p></o:p></span></p><p class=MsoNormal style='margin-left:10.5pt;mso-para-margin-left:1.0gd'><span lang=EN-US>cfg.correctm = 'cluster';<o:p></o:p></span></p><p class=MsoNormal style='margin-left:10.5pt;mso-para-margin-left:1.0gd'><span lang=EN-US>cfg.clusteralpha = 0.05;<o:p></o:p></span></p><p class=MsoNormal style='margin-left:10.5pt;mso-para-margin-left:1.0gd'><span lang=EN-US>cfg.clusterstatistic = 'maxsum';<o:p></o:p></span></p><p class=MsoNormal style='margin-left:10.5pt;mso-para-margin-left:1.0gd'><span lang=EN-US>cfg.tail=0;<o:p></o:p></span></p><p class=MsoNormal style='margin-left:10.5pt;mso-para-margin-left:1.0gd'><span lang=EN-US>cfg.clustertail=0;<o:p></o:p></span></p><p class=MsoNormal style='margin-left:10.5pt;mso-para-margin-left:1.0gd'><span lang=EN-US>cfg.alpha=0.025;<o:p></o:p></span></p><p class=MsoNormal style='margin-left:10.5pt;mso-para-margin-left:1.0gd'><span lang=EN-US>cfg.numrandomization = 1000;<o:p></o:p></span></p><p class=MsoNormal style='margin-left:10.5pt;mso-para-margin-left:1.0gd'><span lang=EN-US>nsubj = 10;<o:p></o:p></span></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];<o:p></o:p></span></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];<o:p></o:p></span></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)<o:p></o:p></span></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)<o:p></o:p></span></p><p class=MsoNormal style='margin-left:10.5pt;mso-para-margin-left:1.0gd'><span lang=EN-US><o:p> </o:p></span></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{:});<o:p></o:p></span></p><p class=MsoNormal style='margin-left:10.5pt;mso-para-margin-left:1.0gd'><span lang=EN-US><o:p> </o:p></span></p><p class=MsoNormal><span lang=EN-US>My data:<o:p></o:p></span></p><p class=MsoNormal style='margin-left:10.5pt;mso-para-margin-left:1.0gd'><span lang=EN-US>display (grandavgA{1})<o:p></o:p></span></p><p class=MsoNormal style='margin-left:10.5pt;mso-para-margin-left:1.0gd'><span lang=EN-US>time: [1×400 double]<o:p></o:p></span></p><p class=MsoNormal style='margin-left:10.5pt;mso-para-margin-left:1.0gd'><span lang=EN-US>inside: [8196×1 logical]<o:p></o:p></span></p><p class=MsoNormal style='margin-left:10.5pt;mso-para-margin-left:1.0gd'><span lang=EN-US>pos: [8196×3 double]<o:p></o:p></span></p><p class=MsoNormal style='margin-left:10.5pt;mso-para-margin-left:1.0gd'><span lang=EN-US>tri: [16384×3 double]<o:p></o:p></span></p><p class=MsoNormal style='margin-left:10.5pt;mso-para-margin-left:1.0gd'><span lang=EN-US>method: 'average'<o:p></o:p></span></p><p class=MsoNormal style='margin-left:10.5pt;mso-para-margin-left:1.0gd'><span lang=EN-US>avg: [1×1 struct]<o:p></o:p></span></p><p class=MsoNormal style='margin-left:10.5pt;mso-para-margin-left:1.0gd'><span lang=EN-US>cfg: [1×1 struct]<o:p></o:p></span></p><p class=MsoNormal style='margin-left:10.5pt;mso-para-margin-left:1.0gd'><span lang=EN-US>display(grandavgA{1}.avg)<o:p></o:p></span></p><p class=MsoNormal><span lang=EN-US> mom: {1×8196 cell}<o:p></o:p></span></p><p class=MsoNormal><span lang=EN-US> pow: [8196×1 double] %I used ‘8196×1 double’ instead of ‘8196×400 double’<o:p></o:p></span></p><p class=MsoNormal><span lang=EN-US> noisecov: {1×8196 cell}<o:p></o:p></span></p><p class=MsoNormal><span lang=EN-US><o:p> </o:p></span></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’t appear in my source struct)<o:p></o:p></span></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!<o:p></o:p></span></p><p class=MsoNormal><span lang=EN-US>Hope that helps!<o:p></o:p></span></p><p class=MsoNormal><span lang=EN-US> <o:p></o:p></span></p><p class=MsoNormal><span lang=EN-US> Best,<o:p></o:p></span></p><p class=MsoNormal><span lang=EN-US> Tao<o:p></o:p></span></p></div></body></html>