--- a
+++ b/functions/adminfunc/intersect_bc.m
@@ -0,0 +1,56 @@
+% intersect_bc - intersect backward compatible with Matlab versions prior to 2013a
+
+% Copyright (C) 2013 Arnaud Delorme
+%
+% This file is part of EEGLAB, see http://www.eeglab.org
+% for the documentation and details.
+%
+% Redistribution and use in source and binary forms, with or without
+% modification, are permitted provided that the following conditions are met:
+%
+% 1. Redistributions of source code must retain the above copyright notice,
+% this list of conditions and the following disclaimer.
+%
+% 2. Redistributions in binary form must reproduce the above copyright notice,
+% this list of conditions and the following disclaimer in the documentation
+% and/or other materials provided with the distribution.
+%
+% THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS"
+% AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
+% IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
+% ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT HOLDER OR CONTRIBUTORS BE
+% LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
+% CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
+% SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
+% INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
+% CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
+% ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF
+% THE POSSIBILITY OF SUCH DAMAGE.
+
+function [C,IA,IB] = intersect_bc(A,B,varargin)
+
+errorFlag = error_bc;
+
+v = version;
+indp = find(v == '.');
+v = str2num(v(1:indp(2)-1));
+if v > 7.19, v = floor(v) + rem(v,1)/10; end
+
+if nargin > 2
+    ind = strmatch('legacy', varargin);
+    if ~isempty(ind)
+        varargin(ind) = [];
+    end
+end
+
+if v >= 7.14
+    [C,IA,IB] = intersect(A,B,varargin{:},'legacy');
+    if errorFlag
+        [C2,IA2,IB2] = intersect(A,B,varargin{:});
+        if (~isequal(C, C2) || ~isequal(IA, IA2) || ~isequal(IB, IB2))
+            warning('backward compatibility issue with call to intersect function');
+        end
+    end
+else
+    [C,IA,IB] = intersect(A,B,varargin{:});
+end