Clear Filters
Clear Filters

How can find column wise similarity of two matrix?

5 views (last 30 days)
SM
SM on 5 Aug 2021
Edited: Chunru on 6 Aug 2021
I have two matrice such as
A=[3 1 1 2 1 3 3 2
1 1 2 1 3 2 3 2 ];
B=[ 2 1 3 3 1 2 3 1
1 1 1 2 2 2 3 3 ];
If we look at these two matrices column wise, it is same at index 2 and 7. How can i find the index array [2 7] ?
Thanks!

Answers (2)

Chunru
Chunru on 5 Aug 2021
A=[3 1 1 2 1 3 3 2
1 1 2 1 3 2 3 2 ];
B=[ 2 1 3 3 1 2 3 1
1 1 1 2 2 2 3 3 ];
find(all(A-B==0))
ans = 1×2
2 7
  2 Comments
Chunru
Chunru on 6 Aug 2021
Edited: Chunru on 6 Aug 2021
A = [1 2];
B = [1 2];
find(all(A==B, 1)) % explicitly 1st dimension (column wise)
ans = 1×2
1 2
A=[3 1 1 2 1 3 3 2
1 1 2 1 3 2 3 2 ];
B=[ 2 1 3 3 1 2 3 1
1 1 1 2 2 2 3 3 ];
find(all(A==B, 1)) % work for this too
ans = 1×2
2 7

Sign in to comment.


Awais Saeed
Awais Saeed on 5 Aug 2021
Just use
idx = find(all(A == B))
idx =
2 7

Categories

Find more on Matrices and Arrays in Help Center and File Exchange

Community Treasure Hunt

Find the treasures in MATLAB Central and discover how the community can help you!

Start Hunting!