[FieldTrip] axes in ft_connectivityplot

[Karl Doron]

Hello,

Great! That makes sense.

On my second question for ft_topoplotCC, there is a bug using strmatch on lines 191 and 192. You'll likely encounter an error using horzcat at line 199 if the 'exact' argument is not added due to possible comparison of a vector and a scalar, e.g., begindx will find channel A2* when only A2 is needed.

begindx = strmatch(beglabel{i}, lay.label,'exact');
endindx = strmatch(endlabel{i}, lay.label,'exact');

Thanks!

karl 



On Jan 23, 2012, at 11:52 PM, jan-mathijs schoffelen wrote:

> Hi Karl,
> 
> The subplots represent the magnitude of the connectivity metric (which are typically unit-less) as a function of frequency.
> 
> Best,
> 
> Jan-Mathijs
> 
> On Jan 24, 2012, at 1:19 AM, Karl Doron wrote:
> 
>> Hello,
>> 
>> Just to clarify my first question below. In the context of the tutorial on the fieldtrip website, what do the axes in this figure represent? 
>> 
>> Thanks,
>> karl doron
>> UC, Santa Barbara
>> 
>>> Hello,
>>> 
>>> I'm trying to use some of the plot tools for results from ft_connectivityanalysis. Can anyone tell me what the horizontal and vertical axes represent in ft_connectivityplot? The values differ on each plot in the matrix and don't seem to correspond to the data. Also, in ft_topoplotCC, is it possible to weight the line font based on the magnitude of the coherence value?
>>> 
>>> %% step 1 | freq analysis
>>>  
>>> cfg            = [];
>>> cfg.channel    = {'A224', 'A188', 'A189', 'A163', 'A184','A162'};
>>> cfg.method     = 'mtmfft';
>>> cfg.output     = 'fourier';
>>> cfg.foilim     = [8 12];
>>> cfg.toi        = 2.35:0.01:2.65;
>>> cfg.keeptrials = 'yes';
>>> cfg.keeptapers = 'yes';
>>> cfg.tapsmofrq  = 2;
>>> cfg.taper      = 'dpss';
>>>  
>>> freq_alpha     = ft_freqanalysis(cfg, data_spctrm);
>>>  
>>>  
>>> %% step 2 | connectivity analysis
>>>  
>>> cfg            = [];
>>> cfg.method     = 'coh';
>>>  
>>> coh            = ft_connectivityanalysis(cfg, freq_alpha);
>>> 
>>> 
>>> 
>>> Thanks for any feedback,
>>> karl doron
>>> UC, Santa Barbara
>>> 
>>> 
>>> 
>>> 
>>> 
>> 
>> _______________________________________________
>> fieldtrip mailing list
>> fieldtrip at donders.ru.nl
>> http://mailman.science.ru.nl/mailman/listinfo/fieldtrip
> 
> Jan-Mathijs Schoffelen, MD PhD 
> 
> Donders Institute for Brain, Cognition and Behaviour, 
> Centre for Cognitive Neuroimaging,
> Radboud University Nijmegen, The Netherlands
> 
> Max Planck Institute for Psycholinguistics,
> Nijmegen, The Netherlands
> 
> J.Schoffelen at donders.ru.nl
> Telephone: +31-24-3614793
> 
> _______________________________________________
> fieldtrip mailing list
> fieldtrip at donders.ru.nl
> http://mailman.science.ru.nl/mailman/listinfo/fieldtrip

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