[FieldTrip] ft_sourceanalysis, reshape error

[Azeez Adebimpe]

Hi David,

Probably the channels' labels in leadfield and data are not the same.

check it and try again.

Azeez

On Fri, Feb 5, 2016 at 8:47 AM, David Pedrosa <david.pedrosa at ndcn.ox.ac.uk>
wrote:

> Dear list,
>
> after installing the newest version of Fieldtrip today, I have encountered
> a rather strange error . I am tying to compute corticomuscular coherence
> for an EEG/EMG dataset and it worked well so far. With the new version
> however, I get a reshape error I find fard to understand. This is the code:
>
>     cfg              = [];
>     cfg.frequency    = 20;;
>     cfg.grid        = leadfield;
>     cfg.method       = 'dics';
>     cfg.refchan      = 'ExtR1';
>     cfg.channel         = {'EEG' 'ExtR1'};
>     cfg.vol          = hdm;
>     cfg.dics.projectnoise = 'no';
>     cfg.dics.lambda       = '1%';
>     cfg.dics.keepfilter   = 'yes';
>     cfg.dics.keeptrials   = 'yes';
>     cfg.dics.realfilter   = 'yes';
>     sourceAll = ft_sourceanalysis(cfg, freqAll);
>
> but this hasn't changed. The error pops up at lines 619/620 of
> ft_sourceanalysis (Cf = reshape(sum(Cf, 1) / Ntrials, [Nchans Nchans]);),
> where it supposedly just averages the CSD matrix over trials.  And it makes
> kind of sense as the line says to reshape the CSDs from a 1xNchans matrix
> into a [Nchans Nchans] one. But why is it poppin up now as nothing has
> changed in my analyses? I have checked the updates of the last months and I
> couldn't find anything related to this. So has any one an idea why the
> analysis crashes at this point.
>
> Thanks in advance
> Best,
> David
>
> ------------------------------
> Dr. David Pedrosa
>
> Clinical Research Fellow
> Medical Research Council Brain Network Dynamics Unit at the University of
> Oxford
> Nuffield Department of Clinical Neurosciences
> University of Oxford
> Level 6, West Wing
> John Radcliffe Hospital, OX3 9DU
> *Tel:* +44 (0)1865 572490
> *E-Mail:* david.pedrosa at ndcn.ox.ac.uk
>
> http://www.mrcbndu.ox.ac.uk/
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