[FieldTrip] reading .mat in fieldtrip

[Katharina Vogt]

Hi Bahareh,

I had the same issue before too. I also created the needed structure and then used ft_redefinetrial. Not optimal, but it did the job!!

However, I asked Robert Oostenveld to add my file format and he did. I might have to add that I work at the same Uni as he does and I was able to do it in person. I guess you can at least ask.

Best,
Katharina 
> On 11 Aug 2016, at 20:23, Bahareh Elahian (belahian) <belahian at memphis.edu> wrote:
> 
> 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 <mailto:fieldtrip-bounces at science.ru.nl> <fieldtrip-bounces at science.ru.nl <mailto:fieldtrip-bounces at science.ru.nl>> on behalf of Bahareh Elahian (belahian) <belahian at memphis.edu <mailto: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 <mailto:fieldtrip-bounces at science.ru.nl> <fieldtrip-bounces at science.ru.nl <mailto:fieldtrip-bounces at science.ru.nl>> on behalf of Antonio Rodriguez <toni.rbaena at gmail.com <mailto: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>> escribió:
> 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 <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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