[FieldTrip] How to use FieldTrip on mat files for Biomag2012?

smoratti at psi.ucm.es smoratti at psi.ucm.es
Mon Jun 11 09:39:43 CEST 2012

Dear Vlad,

It seems that the matlab structure already contains the data in fieldtrip format. This structure normally is created when you read raw data from some compatible data format.



Stephan Moratti, PhD

see also: http://web.me.com/smoratti/

Universidad Complutense de Madrid
Facultad de Psicología
Departamento de Psicología Básica I
Campus de Somosaguas
28223 Pozuelo de Alarcón (Madrid)


Center for Biomedical Technology
Laboratory for Cognitive and Computational Neuroscience
Parque Científico y Tecnológico de la Universidad Politecnica de Madrid
Campus Montegancedo
28223 Pozuelo de Alarcón (Madrid)

email: smoratti at psi.ucm.es
Tel.:    +34 679219982

El 11/06/2012, a las 03:40, Vlad Chiriacescu escribió:

>   Hello,
>   I am working on a school project related to the Biomag 2012 analysis competition.
>   I have downloaded a .zip file from ftp://ftp.fcdonders.nl/pub/biomag2012/.
>   I have extracted the content and I am interested in the second objective,
> the one related to long-term memory representations (folder data2).
>   I was able to load the 2 mat files into Matlab workspace.
>   I was also able to use FieldTrip functions on tutorial code.
>   However, when I try to use ft_preprocessing on one of the mat files I get an error.
>   Here is the code I wrote:
>   cfg1.dataset = 'ltmcla_S08.mat'
>   data_org = ft_preprocessing(cfg1)
>   And the error is:
>   ??? Error using ==> ft_read_header at 1639
> unsupported header format (matlab)
> Error in ==> ft_preprocessing at 344
>   hdr = ft_read_header(cfg.headerfile, 'headerformat', cfg.headerformat);
>   I saw a tutorial using ft_read_header, ft_read_data and ft_write_data 
> on a .dat file that was converting it to a mat/bin pair.
>   However, I do not have a .dat file, I have a .mat file.
>   Just in case is necessary, I write some details of the .mat file:
> Is a 1*1 matlab structure with the following fields:
> data, channel, design, time, fs, dim.
>   How could I use FieldTrip on this data? If there are more ways, which one would be the fastest/easiest?
>   Thanks a lot,
>   Vlad
> _______________________________________________
> fieldtrip mailing list
> fieldtrip at science.ru.nl
> http://mailman.science.ru.nl/mailman/listinfo/fieldtrip

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