In Matlab, how can I remove nodes with no edges in a directed graph?
Tweakimp
I enter this:
plot(digraph([1 2 3 10],[2 3 1 1]))
And the figure shows 
How can I remove the nodes 8,9,4,5,6 and 7? Is there a setting to not show any nodes that dont have edges?
Luis Mendo
You can manually relabel the edges using unique, so that there are no holes in the list of node numbers. To maintain the original node names, pass them as fourth input to digraph in the form of a cell array of strings:
S = [1 2 3 10];
T = [2 3 1 1];
[u, ~, w] = unique([S T]);
plot(digraph(w(1:end/2), w(end/2+1:end), [], cellstr(num2str(u.'))))
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