EEGlab Import events on loop - error

I want my code to load all .set files in a folder (['E:\PM_Frequency\EEG\2_correctTriggers\), then import the events from .csv files ('E:\\PM_Frequency\\EEG_log_files\\EEG_Log_Files_Renamed\\') into the loaded .set files and save them into another directory ('E:\\PM_Frequency\\EEG_Data_To_Epoch\\').

It works fine when using the GUI, so I've used the history function from matlab:

clc
clear
sub = [1:44];
run = [1:3];
% Loop between all subjects and runs
for i = sub;
    for j = run;
        if exist(['E:\PM_Frequency\EEG\2_correctTriggers\',sprintf('p%i_%i.set', i,j)]);
            EEG = pop_loadset('filename',sprintf('p%i_%i.set', i,j),'filepath','E:\\PM_Frequency\\EEG\\2_correctTriggers\\');
            
            new_file_name = [EEG.filename];
            
            [ALLEEG, EEG, CURRENTSET] = eeg_store( ALLEEG, EEG, 0 );
            EEG = eeg_checkset( EEG );
            EEG = pop_importevent( EEG, 'append','no','event','E:\\PM_Frequency\\EEG_log_files\\EEG_Log_Files_Renamed\\',new_file_name,'fields',{'number' 'latency' 'duration' 'channel' 'bvtime' 'bvmknum' 'type' 'code' 'urevent'},'skipline',1,'timeunit',1);
            [ALLEEG, EEG] = eeg_store(ALLEEG, EEG, CURRENTSET);
            EEG = eeg_checkset( EEG );
            EEG = pop_saveset( EEG, 'filename',new_file_name,'filepath','E:\\PM_Frequency\\EEG_Data_To_Epoch\\');% or .filename
            [ALLEEG, EEG] = eeg_store(ALLEEG, EEG, CURRENTSET);
        else
            %do nothing
        end
    end
end

But I've received the following error message after executing the code:

pop_loadset(): loading file E:\\PM_Frequency\EEG\2_correctTriggers\p10_1.set ...
Reading float file 'E:\\PM_Frequency\EEG\2_correctTriggers\p10_1.fdt'...
Undefined function or variable 'ALLEEG'.

Error in set_events_using_log_files (line 19)
            [ALLEEG, EEG, CURRENTSET] = eeg_store( ALLEEG, EEG, 0 );

If I delete this line:

            [ALLEEG, EEG, CURRENTSET] = eeg_store( ALLEEG, EEG, 0 );

I get the following error message:

Index exceeds matrix dimensions.

Error in pop_importevent (line 223)
        if iscell(args{index+1}), if iscell(args{index+1}{1}) args{index+1} = args{index+1}{1}; end; end; % double nested

Error in set_events_using_log_files (line 20)
            EEG = pop_importevent( EEG,
            'append','no','event','E:\\PM_Frequency\\EEG_log_files\\EEG_Log_Files_Renamed\\',new_file_name,'fields',{'number'
            'latency' 'duration' 'channel' 'bvtime' 'bvmknum' 'type' 'code' 'urevent'},'skipline',1,'timeunit',1);

I would really appreciate any help,

Cheers

Answer 1

[Monika Tutaj]

Hello there,

I figured out how to import events in a loop, however they're not in .csv format but in .tag format, but maybe this will help you anyway.

First of all before my loop im setting all paths, cd(yourpath), loading all set files from my cd files = dir('*.set');.

All steps below i'm doing in a for loop (for i=1:length(files))

After running desired operations (ie filtering ica etc) im saving my set to the savepath i've defined earlier, AND in the same folder i will have my .tag files corresponding to .set. :

EEG = pop_saveset( EEG, 'filename',['ica_' files(i).name], 'filepath', save2); % saving after ica

cd(save2) %im changing cd to the folder where i have my saved sets

tags = dir('*.tag'); %choosing all tag files

EEG = pop_loadset('filename',['ica_' files(i).name], 'filepath', save2); %loading same set ive saved

EEG2 = pop_importevent(EEG, 'event',tags(i).name, 'fields', {'type', 'latency','duration','tag_type','channel' },'skipline', 3 , 'timeunit',1,'align', NaN,'optimalign','off');

I dont know if you will find it helpful, but thats what works for me.

Regards, Monika :)