Error: checkdata at 381 This function requires raw data as input

[Roemer van der Meij]

Hi Natalia,

Could you post the cfg-settings you use when calling ft_freqanalysis and
the full matlab error output? This will help us track down the cause of
the error. Also, did you use ft_appenddata for appending your recordings
or did you do it by hand?

Best,
Roemer




On 5/7/2010 4:06 PM, Natalia Grion wrote:
> Dear all,
>           I have this error when running freqanalysis:
> ??? Error using ==>  checkdata at 381
> This function requires raw data as input.
> My data comes from a preprocessing procedure where i just append daily
> sessions with 8 channel lfp recordings and several trials from the same
> subject) and it has this shape:
>
>          hdr: [1x1 struct]
>        label: {8x1 cell}
>        trial: {1x349 cell}
>         time: {1x349 cell}
>      fsample: 2003
>          cfg: [1x1 struct]
>
> when i run checkdata alone I obtain the message i expect:
> B =  checkdata( data, 'datatype', 'raw', 'feedback', 'yes',
> 'hasoffset','yes');
> the input is raw data with 8 channels and 349 trials
> This error message sounds odd to me as I never had this problem in the past.
> I changed to Matlab 2009a in a 64bit win system (Could this info help to
> solve the problem?)
> Any idea?
> Thanks in advance.
> Natalia
>
>
>
>
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> 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.
>

--
Roemer van der Meij MSc
Scientific Programmer&  Data-Analyst
Donders Institute for Brain, Cognition and Behaviour
Centre for Cognition
P.O. Box 9104
6500 HE Nijmegen
The Netherlands
Tel: +31(0)24 3612631
E-mail: r.vandermeij at donders.ru.nl

----------------------------------
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.