eload.m

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function [HDR] = eload(filename,Fs)
% ELOAD loads EVENT data 
% Event information is often stored in different formats. 
% ELOAD tries to load different formats into a unified 
% form 
% 
% HDR = eload(filename)
%
% filename  Filename of Event information 
% HDR.EVENT contains the EVENT information
% 
% 
% see also: SLOAD, SVIEW, SOPEN 
%
 
 
%   $Revision: 1.2 $
%   $Id: eload.m 2205 2009-10-27 12:18:15Z schloegl $
%   Copyright (C) 1997-2004 by Alois Schloegl 
%   a.schloegl@ieee.org 
%       This is part of the BIOSIG-toolbox http://biosig.sf.net/
 
% This library is free software; you can redistribute it and/or
% modify it under the terms of the GNU Library General Public
% License as published by the Free Software Foundation; either
% Version 2 of the License, or (at your option) any later version.
%
% This library 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
% Library General Public License for more details.
%
% You should have received a copy of the GNU Library General Public
% License along with this library; if not, write to the
% Free Software Foundation, Inc., 59 Temple Place - Suite 330,
% Boston, MA  02111-1307, USA.
 
 
HDR = getfiletype(filename);
 
if strcmp(HDR.TYPE,'MAT')
        tmp = load('-mat',filename);
        if isfield(tmp,'eventmatrix') & isfield(tmp,'samplerate') 
                %%% F. Einspieler's Event information 
                HDR.EVENT.POS = tmp.eventmatrix(:,1);
                HDR.EVENT.TYP = tmp.eventmatrix(:,2);
                HDR.EVENT.CHN = tmp.eventmatrix(:,3);
                HDR.EVENT.DUR = tmp.eventmatrix(:,4);
                HDR.EVENT.Fs  = tmp.samplerate;
                HDR.TYPE = 'EVENT';
                
        elseif isfield(tmp,'EVENT') 
                HDR.EVENT = EVENT; 
                HDR.TYPE = 'EVENT';
        end;
        
elseif strcmp(HDR.TYPE,'GDF');
        H = sopen(HDR,'r'); H=sclose(H);
        HDR.EVENT = H.EVENT; 
        HDR.EVENT.Fs = H.SampleRate; 
        HDR.TYPE = 'EVENT';
        
elseif strncmp(HDR.TYPE,'BrainVision',11);
        HDR = sopen(HDR,'r'); HDR=sclose(HDR); 
    if isfield(HDR.EVENT,'TeegType')
        ix = strmatch('New Segment',HDR.EVENT.TeegType); 
        HDR.EVENT.TYP(ix)=hex2dec('7ffe'); 
    end; 
    for k1 = 1:length(HDR.EVENT.Desc)
        tmp = HDR.EVENT.Desc{k1};
        %HDR.TRIG = HDR.EVENT.POS(HDR.EVENT.TYP<10); 
        if 0,
            
            elseif strncmp(tmp,'TargetCode',10)
                HDR.EVENT.TYP(k1) = str2double(tmp(11:12))+hex2dec('0300'); 
            elseif strcmp(tmp,'BeginOfTrial')
                HDR.EVENT.TYP(k1) = hex2dec('0300'); 
                elseif strcmp(tmp,'hit')
                HDR.EVENT.TYP(k1) = hex2dec('0381'); 
            elseif strcmp(tmp,'wrong')
                HDR.EVENT.TYP(k1) = hex2dec('0382'); 
 
    % eye movements
            elseif strcmpi(tmp,'augen links')   
                HDR.EVENT.TYP(k1) = hex2dec('0431');
            elseif strcmpi(tmp,'augen rechts')  
                HDR.EVENT.TYP(k1) = hex2dec('0432');
            elseif strcmpi(tmp,'augen hoch') | strcmpi(tmp,'augen oben')        
                HDR.EVENT.TYP(k1) = hex2dec('0433');
            elseif strcmpi(tmp,'augen unten') | strcmpi(tmp,'augen runter')     
                HDR.EVENT.TYP(k1) = hex2dec('0434');
            elseif strcmpi(tmp,'augen offen')   
                HDR.EVENT.TYP(k1) = hex2dec('8430');
            elseif strcmpi(tmp,'augen zu')  
                HDR.EVENT.TYP(k1) = hex2dec('0430');
            elseif strcmp(tmp,'blinzeln')   
                HDR.EVENT.TYP(k1) = hex2dec('0439'); 
    
    % muscle movements 
            elseif strcmp(tmp,'EMG links')
                HDR.EVENT.TYP(k1) = hex2dec('0441'); 
            elseif strcmp(tmp,'EMG rechts')
                HDR.EVENT.TYP(k1) = hex2dec('0442'); 
            elseif strcmpi(tmp,'kopf bewegen')
                HDR.EVENT.TYP(k1) = hex2dec('0443'); 
            elseif strcmp(tmp,'zunge an')
                HDR.EVENT.TYP(k1) = hex2dec('0444'); 
            elseif strcmp(tmp,'Kiefer anspannen')
                HDR.EVENT.TYP(k1) = hex2dec('0445'); 
            elseif strcmp(tmp,'zunge aus')
                HDR.EVENT.TYP(k1) = hex2dec('8444'); 
            elseif strcmp(tmp,'kopf beißen') | strcmp(tmp,'kopf beißen'),
                HDR.EVENT.TYP(k1) = hex2dec('0446'); 
            elseif strcmp(tmp,'EMG fuss')
                HDR.EVENT.TYP(k1) = hex2dec('0447'); 
            elseif strcmp(tmp,'Arme bewegen')
                HDR.EVENT.TYP(k1) = hex2dec('0449'); 
 
            elseif strncmp(tmp,'S',1)
                n = str2double(tmp(2:end)); 
            if n==11,   % hit (left)
                    HDR.EVENT.TYP(k1) = hex2dec('0381'); 
            elseif n==12,   % hit (right)
                    HDR.EVENT.TYP(k1) = hex2dec('0381'); 
                elseif n==21,   % miss (left)
                    HDR.EVENT.TYP(k1) = hex2dec('0382'); 
            elseif n==22,   % miss (right)
                    HDR.EVENT.TYP(k1) = hex2dec('0382'); 
            elseif n==60,   % feedback onset
                    HDR.EVENT.TYP(k1) = hex2dec('030d'); 
            else
                    HDR.EVENT.TYP(k1) = n; 
            end; 
            
            elseif strcmp(tmp,'s') | strcmp(tmp,'stop') | strcmp(tmp,'stopp'),
                HDR.EVENT.TYP(k1) = bitxor(hex2dec('8300'),HDR.EVENT.TYP(k1-1)); 
                
            elseif ~isempty(tmp)
                [n,v,s] = str2double(tmp(2:end)); 
                if (length(n)==1) & (~v)
                    HDR.EVENT.TYP(k1) = n; 
                end; 
            end;    
    end; 
    HDR.EVENT.TYP = HDR.EVENT.TYP(:); 
 
    if isfield(HDR.EVENT,'POS'); 
            ix1 = find(HDR.EVENT.TYP<10); 
            ix2 = find(HDR.EVENT.TYP==100); 
        HDR.EVENT.TYP(ix2,1) = HDR.EVENT.TYP(ix2-1)+hex2dec('8000'); 
        ix0 = find((HDR.EVENT.TYP>0)&(HDR.EVENT.TYP<10));
        HDR.TRIG = HDR.EVENT.POS(ix0); 
        HDR.Classlabel = HDR.EVENT.TYP(ix0); 
    end; 
 
        HDR = bv2biosig_events(H); 
        
        %%% Artifact database of the sleep EEG 
elseif strcmp(HDR.FILE.Ext,'txt') & strmatch(HDR.FILE.Name,['h000201';'h000901';'h001001']);
        HDR.EVENT = adb2event(filename,100);        
        HDR.TYPE = 'EVENT';
elseif strcmp(HDR.FILE.Ext,'txt') & strmatch(HDR.FILE.Name,['b000101';'b000401';'c000701';'c001701';'m000401';'m000901']);
        HDR.EVENT = adb2event(filename,200);        
        HDR.TYPE = 'EVENT';
elseif strcmp(HDR.FILE.Ext,'txt') & strmatch(HDR.FILE.Name,['n000101';'n000401';'p000101';'p000201';'s000201']);
        HDR.EVENT = adb2event(filename,256);        
        HDR.TYPE = 'EVENT';
elseif strcmp(HDR.FILE.Ext,'txt') & strmatch(HDR.FILE.Name,['u000601']);
        HDR.EVENT = adb2event(filename,400);        
        HDR.TYPE = 'EVENT';
 
elseif strcmp(HDR.TYPE,'WSCORE_EVENT')
        %HDR.EVENT.POS = HDR.EVENT.POS;         % already defined
        HDR.EVENT.TYP = HDR.EVENT.WSCORETYP;         % code assignment not
        fprintf(2,'Warning ELOAD: Event Codes in file %s do not not follow the standard codes of BIOSIG.\n',filename);
        %defined 
        
else
        fprintf(2,'Warning ELOAD: file %s is not recognized as event file.\n',filename);
        
end;