[FieldTrip] reading .mat in fieldtrip

Bahareh Elahian (belahian) belahian at memphis.edu
Thu Aug 11 21:23:30 CEST 2016


I did something and it works but it is not correct .

I specified cfg.trl = data.trial{1,1}


cfg = [];
cfg.bpfilter = 'yes';
cfg.demean = 'yes';
data.trial{1,1} = eeg.eeg_data;
cfg.trl = data.trial{1,1};
data.time{1,1} = 1:size(eeg.eeg_data,2);
data.label{1,1} = 'chan 1';
data.label{2,1} =  'chan 2';
data.label{3,1} = 'chan 3';
data.label{4,1} =  'chan 4';
data.label{5,1} = 'chan 5';
data.label{6,1} =  'chan 6';
data.label{7,1} = 'chan 7';
data.label{8,1} =  'chan 8';
data.fsample = eeg.samp_rate;
newdata = ft_redefinetrial(cfg,data);

the newdata.time and newdata.trial are  <1*8 cell > . some of the cells are empty and one is NAN.



________________________________
From: fieldtrip-bounces at science.ru.nl <fieldtrip-bounces at science.ru.nl> on behalf of Bahareh Elahian (belahian) <belahian at memphis.edu>
Sent: Thursday, August 11, 2016 2:00:52 PM
To: FieldTrip discussion list
Subject: Re: [FieldTrip] reading .mat in fieldtrip


Thanks but none of the options works.

The error is :

you should specify at least one configuration option.


Even cfg.demean = 'yes'; is not enough.


________________________________
From: fieldtrip-bounces at science.ru.nl <fieldtrip-bounces at science.ru.nl> on behalf of Antonio Rodriguez <toni.rbaena at gmail.com>
Sent: Thursday, August 11, 2016 1:47:18 PM
To: FieldTrip discussion list
Subject: Re: [FieldTrip] reading .mat in fieldtrip


Hi.

You can create an empty cfg structure, and fill with data :

cfg =[];
newdata = ft_redefinetrial(cfg,data);

El 11 ago. 2016 7:11 p. m., "Bahareh Elahian (belahian)" <belahian at memphis.edu<mailto:belahian at memphis.edu>> escribi?:
Thanks for the answer,

I have had a look on this page before and I tried to follow the steps.
The problem is ;I do not have any cfg to define cfg.trl and use newdata = ft_redefinetrial(cfg,data);

Any other idea?



On Aug 11, 2016, at 11:36 AM, Arjen Stolk <a.stolk8 at gmail.com<mailto:a.stolk8 at gmail.com>> wrote:

Hi Bahareh,

To get you started, see this page:
http://www.fieldtriptoolbox.org/faq/how_can_i_import_my_own_dataformat

It describes what fieldtrip expects your raw data to look like.

Arjen

2016-08-11 8:42 GMT-07:00 Bahareh Elahian (belahian) <belahian at memphis.edu<mailto:belahian at memphis.edu>>:
Hi All,

I have a ".mat" file which contais: <8x10350000 double> and sampling rate.
How should I import this data to field trip? By using   [data] = ft_preprocessing( cfg);
  I am getting an error that the data should be in the format of raw or raw + comp.

Any idea?

Thanks!



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