matlab-线性下标
>> a=[1 2 3;4 5 6;7 8 9]
a =
???? 1???? 2???? 3???? 4???? 5???? 6???? 7???? 8???? 9
?>> sub2ind(size(a),1,2)
ans =
???? 4
>> a(4)
???? 2
>> sub2ind(size(a),2,1)
>> a(2)
>>
?
