[FieldTrip] how do I get data with dimord chan_chan_freq for ft_connectivityplot?

[jan-mathijs schoffelen]

Hi Marieke,

You can have a look here to get your analysis settings such that you can use ft_connectivityplot. In short, please specify cfg.output = 'fourier' rather than 'powandcsd' (and also omit the cfg.channelcmb) prior to calling ft_freqanalysis, and 'een kind kan de was doen'.

http://fieldtrip.fcdonders.nl/tutorial/connectivity

Best wishes,

Jan-Mathijs

On Nov 27, 2011, at 9:43 AM, Marieke van Vugt wrote:

> Hi everyone,
> I am trying to use ft_connectivityplot, but it wants data with dimord chan_chan_freq. However, I only get data with dimord chan_freq_time or chan_freq out of ft_connectivityanalysis (I am computing coherence). For example, these are the cfgs I use:
> 
> cfg            = [];
> cfg.output     = 'powandcsd';
> cfg.method     = 'mtmfft';
> cfg.foilim     = [4 9];
> cfg.tapsmofrq  = 4;
> cfg.toi = 0.1
> cfg.keeptrials = 'yes';
> cfg.channel    = 'all';
> cfg.trials = highCohTrials'; 
> cfg.channelcmb = {'all' 'all'};
> fftHigh           = ft_freqanalysis(cfg,hpdat);
> 
> cfg           = [];
> cfg.method    = 'coh';
> cohHighEarly   = ft_connectivityanalysis(cfg, fftHigh);
> 
> cohHighEarly = 
> 
>      labelcmb: {6555x2 cell}
>        dimord: 'chan_freq'
>     cohspctrm: [6555x9 double]
>          freq: [4 4.6667 5.3333 6 6.6667 7.3333 8 8.6667 9.3333]
>          elec: [1x1 struct]
>           dof: 5808
>           cfg: [1x1 struct]
> 
> cfg           = [];
> cfg.parameter = 'cohspctrm';
> ft_connectivityplot(cfg,cohHighEarly)
> 
> 
> 
> 
> What should I do?
> Thanks!
> Marieke
> 
> ----------------------------------------------------------------------------
> Marieke van Vugt, PhD
> Assistant Professor, Cognitive Modeling Group
> Bernoulliborg, room 326
> Nijenborgh 9
> 9747 AG Groningen
> The Netherlands
> phone: +31-6-51954984 (cell)
>               +31-50-363-9487 (office)
> http://www.ai.rug.nl/~mkvanvugt
> m.k.van.vugt at rug.nl
> 
> 
> 
> 
> 
> 
> 
> 
> 
> 
> 
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Jan-Mathijs Schoffelen, MD PhD 
Donders Institute for Brain, Cognition and Behaviour, 
Centre for Cognitive Neuroimaging,
Radboud University Nijmegen, The Netherlands
J.Schoffelen at donders.ru.nl
Telephone: +31-24-3614793

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