Hi every one, I am a little bit new in matlab I would like to generate directed random graph using Matlab. That is a random directed graph with n nodes . That is How to generate a random network with a certain number of nodes in Matlab

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M Shaka
M Shaka 2018-2-9
回答： M Shaka 2018-2-9
[G]= function(n) . . . return

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Guillaume
Guillaume 2018-2-9
With so little information the only thing we can do is point you to digraph. What is random about your graph? Is the number of edges fixed.
g = digraph(randi([0 n], n))
will generate a random directed graph with n node. It's unlikely to be pretty as it will have many edges (n*(n-1) edges on average).
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Guillaume
Guillaume 2018-2-9
As per the doc (link in my answer) digraph requires at least R2015b.
If you want to work with graphs, I strongly recommend upgrading to at least R2015b as it introduced lots of graph functions including the ability of easily plotting graphs.
For example, in just two lines:
g = digraph(max(randi([-60 10], 10), 0));
plot(g);
I've generated this:
Steven Lord
Steven Lord 2018-2-9
FYI the sprand and sprandsym functions are also useful in generating random networks. That may be an easier to understand alternative than calling max(randi(... to generate a matrix with roughly a specific proportion of nonzero elements.

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M Shaka
M Shaka 2018-2-9
thanks

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