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

hi, how would i change an undirected network into a directed network on matlab? what commannds could I use?

Answer 1

[Stephan]

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.

Answer 2

[Christine Tobler]

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.