How to "partner" 2 matrixes
조회 수: 1 (최근 30일)
이전 댓글 표시
The matrix X is randomly shuffled, how does Y follow up that shuffle?
i.e:
X=[4 7 1 9;
3 0 6 8]
Y=[32 6 4 21;
77 89 0 2]
after the shuffle:
X=[3 9 4 6;
1 7 8 0]
Y=[77 21 32 0;
4 6 2 89]
댓글 수: 0
채택된 답변
Guillaume
2018년 11월 30일
X = [4 7 1 9;
3 0 6 8]
Y = [32 6 4 21;
77 89 0 2]
newX = [3 9 4 6;
1 7 8 0]
[found, where] = ismember(newX, X);
assert(all(found(:)), 'some elements of newX are not present in X')
newY = Y(where)
댓글 수: 3
Guillaume
2018년 12월 2일
Keep the list of elements you're going to replace (i.e. the logical array X == 0) so that you can use for Y as well:
X=[4 7 1 0;
3 0 6 8]
Y=[32 6 4 21;
77 89 0 2]
toreplace = X == 0;
X(toreplace) = a;
Y(toreplace) = a;
추가 답변 (1개)
madhan ravi
2018년 11월 30일
편집: madhan ravi
2018년 11월 30일
X=[4 7 1 9;
3 0 6 8]
idx=randsample(1:numel(X),numel(X));
shuffled_X=reshape(X(idx),size(X,1),[])
Y=[32 6 4 21;
77 89 0 2]
shuffled_Y=reshape(Y(idx),size(Y,1),[])
command window:
>> COMMUNITY
X =
4 7 1 9
3 0 6 8
shuffled_X =
1 0 3 7
8 9 4 6
Y =
32 6 4 21
77 89 0 2
shuffled_Y =
4 89 77 6
2 21 32 0
>>
참고 항목
카테고리
Help Center 및 File Exchange에서 Get Started with MATLAB에 대해 자세히 알아보기
Community Treasure Hunt
Find the treasures in MATLAB Central and discover how the community can help you!
Start Hunting!