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How to highlight isolated nodes in a graph?

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Asaf McRock
Asaf McRock on 22 Feb 2021
Edited: Asaf McRock on 24 Feb 2021
Hello, how can I highlight isolated nodes in a graph?
I have tried the following but didn't work:
d=distances(G,(1:N)); % N is the no. of nodes
idx= ismember(d,inf(1,length(d)), 'rows');
H=plot(G,'XData',x,'YData',y);
highlight(H,idx)
Thanks!
  1 Comment
Asaf McRock
Asaf McRock on 22 Feb 2021
Does distances measure the distance between the node and itself?

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Accepted Answer

Steven Lord
Steven Lord on 22 Feb 2021
You want to highlight those nodes that are not connected to any other?
G = graph(sprand(10, 10, 0.05), 'upper');
h = plot(G);
highlight(h, degree(G) == 0, 'NodeColor', 'r')
  1 Comment
Asaf McRock
Asaf McRock on 22 Feb 2021
Thank you very much, Mr. Steven Lord. This is amazing, I don't know why I was complicating it.

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