[FieldTrip] ft_sourceanalysis, reshape error

[David Pedrosa]

Hi Azeez,

I have been checking leadfields and data labels and they are actually the same. But the order is slightly different. Do you think this may cause the problems?

Thanks for your help.

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/<https://owa.nexus.ox.ac.uk/owa/redir.aspx?C=E40BwPuNq0uXQGSOPDW39AmtYlwBR9IIjsI0PRu9uuTE46jeZnqjmG6XP02rBAUiF1EnCJtn3UU.&URL=http%3a%2f%2fwww.mrcbndu.ox.ac.uk%2f>
________________________________
Von: fieldtrip-bounces at science.ru.nl [fieldtrip-bounces at science.ru.nl]" im Auftrag von "Azeez Adebimpe [azeez.adebimpe5 at gmail.com]
Gesendet: Freitag, 5. Februar 2016 22:44
An: FieldTrip discussion list
Betreff: Re: [FieldTrip] ft_sourceanalysis, reshape error

Hi David,

Sorry for late reply, I was on the journey.
The same issue happened to me before when the labels in the leadfield and data were not the same.
if you have 'Fp1' in leadfield and 'FP1' in data, it will view as different channels.


Azeez




On Fri, Feb 5, 2016 at 9:51 AM, David Pedrosa <david.pedrosa at ndcn.ox.ac.uk<mailto:david.pedrosa at ndcn.ox.ac.uk>> wrote:
Hi Azeez,

thank you for the fast reply!
I hadn't considered that but I have checked and I use the same labels for both leadfield and data.

I mean it makes kind of sense that the reshape doesn't work as it is now, but I don't know where the problem is before.

Can you think of anything else?

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<tel:%2B44%20%280%291865%20572490>
E-Mail: david.pedrosa at ndcn.ox.ac.uk<mailto:david.pedrosa at ndcn.ox.ac.uk>

http://www.mrcbndu.ox.ac.uk/<https://owa.nexus.ox.ac.uk/owa/redir.aspx?C=E40BwPuNq0uXQGSOPDW39AmtYlwBR9IIjsI0PRu9uuTE46jeZnqjmG6XP02rBAUiF1EnCJtn3UU.&URL=http%3a%2f%2fwww.mrcbndu.ox.ac.uk%2f>
________________________________
Von: fieldtrip-bounces at science.ru.nl<mailto:fieldtrip-bounces at science.ru.nl> [fieldtrip-bounces at science.ru.nl<mailto:fieldtrip-bounces at science.ru.nl>]" im Auftrag von "Azeez Adebimpe [azeez.adebimpe5 at gmail.com<mailto:azeez.adebimpe5 at gmail.com>]
Gesendet: Freitag, 5. Februar 2016 13:56
An: FieldTrip discussion list
Betreff: Re: [FieldTrip] ft_sourceanalysis, reshape error

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<mailto: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<tel:%2B44%20%280%291865%20572490>
E-Mail: david.pedrosa at ndcn.ox.ac.uk<mailto:david.pedrosa at ndcn.ox.ac.uk>

http://www.mrcbndu.ox.ac.uk/<https://owa.nexus.ox.ac.uk/owa/redir.aspx?C=E40BwPuNq0uXQGSOPDW39AmtYlwBR9IIjsI0PRu9uuTE46jeZnqjmG6XP02rBAUiF1EnCJtn3UU.&URL=http%3a%2f%2fwww.mrcbndu.ox.ac.uk%2f>

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