wolffd@0: function tokens = tokenize(str,delimiter)
wolffd@0: % tokenize a string    
wolffd@0:     if(nargin < 2)
wolffd@0:        delimiter = ' ' ; 
wolffd@0:     end
wolffd@0:     tokens = textscan(str,'%s','delimiter',delimiter, 'bufsize', 100000);
wolffd@0:     tokens = tokens{:};
wolffd@0: end