Compare 2 dimensional matrix for same pair elements

Question

Neelabh Pant 2016-3-17

0
链接

此问题的直接链接

https://ww2.mathworks.cn/matlabcentral/answers/274121-compare-2-dimensional-matrix-for-same-pair-elements

评论： Neelabh Pant 2016-3-17

I want to compare 2 two-dimensional matrices for the identical pair elements. For example, A = [1,1,2,3,3,4,5,6,6;2,3,1,4,5,1,2,3,5] and B = [1,2,4,3,3,5;2,1,2,5,4,2], so, it should return that elements [1,2,3,5;2,1,5,2] are the ones which also exists in the matrix A.

a = [1,1,2,3,3,4,5,6,6;2,3,1,4,5,1,2,3,5];
b = [1,2,4,3,3,5;2,1,2,5,4,2];
for i = 1:length(a)
  for j = 1:length(b)
      if b(1:(j))==a(1,(i)) && b(2,(j))==a(2,(i))
          %*do something*
      end
  end
end

0 个评论
显示 -2更早的评论隐藏 -2更早的评论

请先登录，再进行评论。

请先登录，再回答此问题。

Answer 1

Fangjun Jiang 2016-3-17

1
链接

此回答的直接链接

https://ww2.mathworks.cn/matlabcentral/answers/274121-compare-2-dimensional-matrix-for-same-pair-elements#answer_214032

在 MATLAB Online 中打开

a = [1,1,2,3,3,4,5,6,6;2,3,1,4,5,1,2,3,5];
b = [1,2,4,3,3,5;2,1,2,5,4,2];
aa=a.';
bb=b.';
index=ismember(aa,bb,'rows');
out=aa(index,:);
out=out.'
out =
       1     2     3     3     5
       2     1     4     5     2