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Function to import Neuroscan data into EEGLAB spread retract

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arno authored 2019-04-03 09:31 . initial commit
% pop_loaddat() - merge a neuroscan DAT file with input dataset
% (pop out window if no arguments).
%
% Usage:
% >> OUTEEG = pop_loaddat( INEEG ); % pop-up window mode
% >> OUTEEG = pop_loaddat( INEEG, filename, no_rt);
%
% Graphic interfance:
% "Code signifying no event ..." - [edit box] reaction time
% no event code. See 'no_rt' command line equivalent
% help.
% Inputs:
% filename - file name
% INEEG - input EEGLAB data structure
% no_rt - no reaction time integer code (ex: 1000). Since
% a number has to be defined for each reaction
% time, epochs with no reaction time usually have
% a stereotyped reaction time value (such as 1000).
% Default none.
% Outputs:
% OUTEEG - EEGLAB data structure
%
% Author: Arnaud Delorme, CNL/Salk Institute, 2001
%
% See also: loaddat(), eeglab()
% Copyright (C) 2001 Arnaud Delorme, Salk Institute, arno@salk.edu
%
% This program is free software; you can redistribute it and/or modify
% it under the terms of the GNU General Public License as published by
% the Free Software Foundation; either version 2 of the License, or
% (at your option) any later version.
%
% This program is distributed in the hope that it will be useful,
% but WITHOUT ANY WARRANTY; without even the implied warranty of
% MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
% GNU General Public License for more details.
%
% You should have received a copy of the GNU General Public License
% along with this program; if not, write to the Free Software
% Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
% 01-25-02 reformated help & license -ad
% 13/02/02 removed the no latency option -ad
function [EEG, command] = pop_loaddat(EEG, filename, no_rt);
command = '';
if nargin < 1
help pop_loaddat;
return;
end;
if nargin < 2
% ask user
[filename, filepath] = uigetfile('*.DAT', 'Choose a DAT file -- pop_loaddat');
drawnow;
if filename == 0 return; end
result = inputdlg2( { strvcat('Code signifying no event in a trial ([]=none)', ...
'(none=all latencies are imported)')}, ...
'Load Neuroscan DATA file -- pop_loaddat()', 1, {'1000'}, 'pop_loaddat');
if length(result) == 0 return; end
no_rt = eval( result{1} );
end
if exist('no_rt') ~= 1 || isempty(no_rt)
no_rt = NaN;
end
% load datas
% ----------
if exist('filepath')
fullFileName = sprintf('%s%s', filepath, filename);
else
fullFileName = filename;
end;
disp('Loading dat file...');
[typeeeg, rt, response, n] = loaddat( fullFileName );
if n ~= EEG.trials
error('pop_loaddat, number of trials in input dataset and DAT file different, aborting');
end;
for index = 1:length(EEG.event)
EEG.event(index).eegtype = typeeeg (EEG.event(index).epoch);
EEG.event(index).response = response(EEG.event(index).epoch);
end
for index = 1:n
if rt(index) ~= no_rt
EEG.event(end+1).type = 'rt';
EEG.event(end).latency = eeg_lat2point(rt(index)/1000, index, EEG.srate, [EEG.xmin EEG.xmax]);
EEG.event(end).epoch = index;
EEG.event(end).eegtype = typeeeg(index);
EEG.event(end).response = response(index);
end
end
tmpevent = EEG.event;
tmp = [ tmpevent.latency ];
[tmp indexsort] = sort(tmp);
EEG.event = EEG.event(indexsort);
EEG = eeg_checkset(EEG, 'eventconsistency');
command = sprintf('EEG = pop_loaddat(EEG, %s, %d);', fullFileName, no_rt);
return;

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