Adding nodes from a sub-graph to a larger graph
1 回表示 (過去 30 日間)
古いコメントを表示
I have an adjacency matrix for a graph consisting of 10 nodes and the edges between them. But they are part of a larger graph, and I want to construct the adjacency matrix for that larger graph.
I know what node IDs the nodes 1-10 should correspond to in the larger graph, but I don't know how to set them. Is there an easy way to do this? The function addnode looks helpful, but I think it would keep the original node IDs the same and just add to that, whereas the node IDs of the original set will change when they become part of the larger graph.
Another option might be to do this with a purely array-based approach rather than using graphs. As a simple example, say I have the following adjacency matrix
A =
0 0 1
0 0 1
1 1 0
which corresponds to three nodes and the edges between them. Say these three nodes are actually nodes 1, 5, and 6 of a larger graph with 6 nodes. How would I re-arrange that adjacency matrix in the simplest case where the other nodes form no edges (so would correspond to 0's in the adjacency matrix)?
0 件のコメント
採用された回答
Bruno Luong
2022 年 4 月 21 日
編集済み: Bruno Luong
2022 年 4 月 21 日
Build Abig as adjacent matrix of empty graph with 6 nodes, then insert A to Abig
A = [0 0 1;
0 0 1;
1 1 0 ];
newpos = [1 5 6];
Abig = sparse(6,6);
Abig(newpos,newpos) = Abig(newpos,newpos) | A;
Gbig = graph(Abig);
plot(Gbig);
0 件のコメント
その他の回答 (0 件)
参考
カテゴリ
Help Center および File Exchange で Graph and Network Algorithms についてさらに検索
Community Treasure Hunt
Find the treasures in MATLAB Central and discover how the community can help you!
Start Hunting!