[Eeglablist] Problem when importing CNT files: eeg_checkset error

[Arnaud Delorme]

Dear Joana,

would you mind to upload your file on our FTP server 

ftp://sccn.ucsd.edu/incoming

and submit a bug report at http://sccn.ucsd.edu/eeglab/bugzilla
Also, try to read your CNT file with BIOSIG or FILE-IO (menu File > Import data > Using the FILE-IO interface or File > Import data > Using the BIOSIG interface). Does it generate the same error?

Thanks,

Arno

On Nov 26, 2013, at 10:40 AM, Joana Paiva <joanaispaiva at gmail.com> wrote:

> Hi,
> 
> I'm having a problem to load some .cnt files (Neuroscan).
> When I try to import .cnt files via EEGlab GUI, I get the following warning in Matlab:
> 
> ---
> WARNING: The file size on disk does not correspond to the dataset, file has been truncated (on Matlab command line)
> 
> &
> 
> eeg_checkset error: the number of frames does not divide the number of columns in the data. Should EEGlab attempt to abort operation?
> ---
> 
> Then, I press 'cancel' and I could import the data, but when I scroll through data I can't see any signal in several channels. I also notice that the EEG struct has some incongruences, because the field 'number of points' (EEG.pnts) - 821440 - doesn't match with the field 'size of the data' (EEG.data) - [68x58823 single]. I suppose that the problem is related with this inconsistence.
> 
> I tried to import using the command line (not using the GUI) but it didn't resolve the problem. I have already selected  too the data from points [1:end-1] (as was proposed on eeglablist), but the results were the same.
> 
> I have already imported those files with BrainVision Analyzer and I was able to plot and analyze the signals from all the channels. So, I think that the data are OK but EEGlab isn't definitely able to import the files.
> 
> I don't know what causes this error message and I would be grateful if anyone could help me.
> 
> Joana Paiva
> MSc Student
> Biomedical Engineering
> Faculty of Sciences and Technology - University of Coimbra
> 
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