Reading brainvision dat files

[Jan-Mathijs Schoffelen]

Dear Roman,

I don't have a lot of experience dealing with brainvision files in  
fieldtrip, but it looks as though there's something going wrong with  
the allocation of the data matrix. Apparently, one of the input  
arguments into the function zeros(), is either not a number, or  
infinite. This means, that either the quantity endsample-begsmaple+1  
is behaving strangely, or that the hdr.NumberOfChannels is faulty,  
which would point to a problem reading in the header information from  
your datafile.

Best,

jan-Mathijs


On 17 Aug 2009, at 14:31, Roman Freunberger wrote:

> Hello,
>
> I am a new fieldtrip user and would like to know how to read  
> brainvision files that were exported as .dat into matlab with  
> fieldtrip. It would be great to read segmented and/ or continous  
> data into matlab that was preprocessed (artifact correction, …) in  
> brainvision analyzer. I tried read_data in combination with the  
> read_header function and I always get this message:
>
> ??? Error using ==> zeros
> NaN and Inf not allowed.
>
> Error in ==> read_brainvision_eeg at 89
>   dat = zeros(endsample-begsample+1, hdr.NumberOfChannels);
>
> Error in ==> read_data at 686
>     dat = read_brainvision_eeg(filename, hdr.orig, begsample,  
> endsample);
>
> Error in ==> ReadAnalyzerSegments at 7
> data = read_data(filename);
>
> Thank you in advance and best wishes,
> Roman
>
> **********************************************************
> Dr. Roman Freunberger
> Department of Psychology
> University of Salzburg
> Hellbrunnerstrasse 34
> 5020 Salzburg, Austria
>
>
> ----------------------------------
>
> The aim of this list is to facilitate the discussion between users  
> of the FieldTrip toolbox, to share experiences and to discuss new  
> ideas for MEG and EEG analysis.
>
> http://listserv.surfnet.nl/archives/fieldtrip.html
>
> http://www.ru.nl/fcdonders/fieldtrip/
>


----------------------------------
The aim of this list is to facilitate the discussion between users of the FieldTrip  toolbox, to share experiences and to discuss new ideas for MEG and EEG analysis. See also http://listserv.surfnet.nl/archives/fieldtrip.html and http://www.ru.nl/neuroimaging/fieldtrip.
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