how would i change an undirected network into a directed network on matlab?

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mariam shakoor
mariam shakoor 2021-4-6
回答： Christine Tobler 2021-4-6
hi, how would i change an undirected network into a directed network on matlab? what commannds could I use?

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回答（2 个）

Stephan
Stephan 2021-4-6
here is a small example:
A = [0 0 1; 0 0 1; 1 1 0]
ug = graph(A)
B = zeros(size(A,1))
B = B + triu(A)
dg = digraph(B)
subplot(2,1,1)
plot(ug)
subplot(2,1,2)
plot(dg)
read more here:
https://de.mathworks.com/help/matlab/math/directed-and-undirected-graphs.html
and at the linked pages at the bottom of the provided link.
Christine Tobler
Christine Tobler 2021-4-6
It depends on what you want to the directed graph to look like. To replace every undirected edge with two directed edges going in both directions, use
directedG = digraph(adjacency(undirectedG);
Note this will not copy over any node or edge properties of the original graph (for example node names). It also won't work if you have a multigraph (more than one edge connecting the same pair of nodes). There are other commands that will work for those cases.

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