如何使用Matlab在矩阵中查找唯一的(非重复的)值 [英] How to find a unique (non-repeated) value in a matrix by using matlab

问题描述

每个人.假设我有以下(3x3)矩阵A:

everyone. Let's say I have following (3x3)matrix A:

0 1 3
0 0 3
0 0 0

我的问题是如何通过使用matlab找出矩阵中的唯一值? 在这种情况下，结果应为1. 我尝试过使用

My question is how to find out the unique value in that matrix by using matlab? In this case, the result should be 1. I have tried used the

value=unique(A)

但是它返回的向量不是我想要的{0; 1; 3}.

but it returned a vector {0;1;3} is not what I want.

非常感谢你们能帮助我解决这个问题.谢谢！

I much appreciate if you guys can help me solve this problem. Thank you!

推荐答案

这里很短

value = A(sum(bsxfun(@eq, A(:), A(:).'))==1);

它比较矩阵中的所有成对元素，并计算它们相等的次数，并返回仅计数一次的元素.

It compares all pairs of elements in the matrix and counts how many times they are equal and returns the ones that have been counted only once.

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