这两个循环里面: 
    if double(tline(1))=='S' 
        Y=[Y;B]; 
        B=0*a; 
    end 
     
    if double(tline(1))>48&&double(tline(1))<=57 
        j=length(tline); 
        for i=1:j 
            if tline(i)==',' 
                break 
            end 
        end 
 
[double(tline(1))=='S'] S是什么意思 
         
 [ if double(tline(1))>48&&double(tline(1))<=57]     48 与57 有失是什么??
		 
		
		
		
		
		
		
		
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