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Dear Diane,
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<div class="">You may need to check whether your fieldtrip version is up-to-date. You should have a function called ft_statistics_mvpa in the fieldtrip folder. If it’s not there, you probably should update your fieldtrip.</div>
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<div class="">Best wishes,</div>
<div class="">Jan-Mathijs</div>
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<div class="">On 27 Mar 2019, at 15:01, D.Abdallah <<a href="mailto:da401@kent.ac.uk" class="">da401@kent.ac.uk</a>> wrote:</div>
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Dear fieldtrip users, <br class="">
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I've downloaded and added to my path on Matlab the MVPA-Light-master toolbox. I'm using MATLAB R2014a. After preprocessing and segmenting my data I tried to run the classification accuracy following the steps in the fieldtrip MVPA Light tutorial: <a href="http://www.fieldtriptoolbox.org/tutorial/mvpa_light/" class="">http://www.fieldtriptoolbox.org/tutorial/mvpa_light/</a><br class="">
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This is the code I have for the classification during the latency chosen: <br class="">
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%Classification in 0.5 0.7 latency</div>
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nFaces = numel(face_timelock.trial);</div>
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nVase = numel(vase_timelock.trial);</div>
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%%Define the configuration struct</div>
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cfg = [];</div>
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cfg.keeptrials = 'yes';</div>
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cfg.method = 'mvpa';</div>
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cfg.layout = 'biosemi64.lay';</div>
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cfg.mvpa.classifier = 'multiclass_lda';</div>
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cfg.mvpa.metric = 'accuracy';</div>
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cfg.mvpa.k = 5;</div>
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cfg.latency = [0.5, 0.7];</div>
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cfg.avgovertime = 'yes';</div>
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cfg.design = [ones(nFaces,1); 2*ones(nVase,1)];</div>
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stat = ft_timelockstatistics(cfg, face_timelock, vase_timelock);<br class="">
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When I run this bit, I keep getting this error message: <br class="">
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Error using ft_timelockstatistics (line 162)<br class="">
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could not find the corresponding function for cfg.method="mvpa"<br class="">
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When I look into the script for ft_timelockstatistics, this is what I find in the lines that specify what stats can be used with the cfg.method function:<br class="">
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<div class="">% fetch function handle to the intermediate-level statistics function</div>
<div class="">statmethod = ft_getuserfun(cfg.method, 'statistics');</div>
<div class="">if isempty(statmethod)</div>
<div class=""> ft_error('could not find the corresponding function for cfg.method="%s"\n', cfg.method);</div>
<div class="">else</div>
<div class=""> fprintf('using "%s" for the statistical testing\n', func2str(statmethod));</div>
<div class="">end<br class="">
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<div class="">I am not sure what I am doing wrong. Any help/input would be very much appreciated. <br class="">
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<div class="">Thank you! <br class="">
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<div class="">All the best,<br class="">
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<div class="">Diane Abdallah<br class="">
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<div class="">Neuropsychology PhD Student, University of Kent, UK<br class="">
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<a href="https://doi.org/10.1371/journal.pcbi.1002202" style="font-family: Calibri, Arial, Helvetica, sans-serif; font-size: 16px; 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; background-color: rgb(255, 255, 255);" class="">https://doi.org/10.1371/journal.pcbi.1002202</a><br style="font-family: Calibri, Arial, Helvetica, sans-serif; font-size: 16px; 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; background-color: rgb(255, 255, 255);" class="">
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