how to build a n*n weighted matrix

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Mojtaba
Mojtaba on 27 Feb 2024
Commented: Mojtaba on 2 Mar 2024
one of the variable of our work is A. that is NxN weight matrix defining the (strongly connected) network. A(i,j) is the weight of the link i->j.
please show me how i create a NxN weight matrix based on real data (like variables of input output tables)

Accepted Answer

Steven Lord
Steven Lord on 27 Feb 2024
Do you want to create the weighted adjacency matrix or do you want a digraph object that you can manipulate and analyze (asking for shortest path, distance between nodes, etc.)?
The "Edge List Graph Construction with Node Names and Edge Weights" or "Graph Construction with Tables" examples on that documentation page to which I linked above may give you a starting point for how to construct such a digraph that you can adapt to the specific format in which your data is stored.
And if you do just want the weighted adjacency matrix, if you build a digraph you can call the adjacency function on the object you built.

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