MATLAB Answers

how to obtain adjacency matrix?

3 views (last 30 days)
if i have data
1 2 3 4
2 3 5 6
3 5 6 7
in first row the element 1 has a connection with elements 2,3,4. And so on in remaining rows, so i want the adjacency matrix as
0 1 1 1 0 0 0
1 0 1 0 1 1 0
1 1 0 0 1 1 1
1 0 0 0 0 0 0
0 1 1 0 0 0 0
0 1 1 0 0 0 0
0 0 1 0 0 0 0

Accepted Answer

Walter Roberson
Walter Roberson on 7 Apr 2018
Same basic technique as in https://www.mathworks.com/matlabcentral/answers/390250-how-to-calculate-adjacency-matrix#answer_311752 which is waiting for a response from you.
A = [1 2 3 4
2 3 5 6
3 5 6 7];
[r, c, s] = find(A(:,2:end));
adj = full(sparse([r,s],[s,r],1));
  1 Comment
muhammad ismat
muhammad ismat on 7 Apr 2018
Thank you very much Walter Roberson for your advance

Sign in to comment.

More Answers (0)

Community Treasure Hunt

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

Start Hunting!