MATLAB: Connected components in a graph

connected components of a graphgraphundirected graph

M=[1 2;2 5;3 4;4 6;6 7;6 8;6 9;6 10];
G=graph(M(:,1),M(:,2))
[bins,binsizes]=conncomp(G);
When I use the built in function conncomp, MATLAB always assumes that first component of graph G is the one which node 1 belongs to.
The output bins in the given example is:
bins=[1 1 2 2 1 2 2 2 2 2] How can I make the first component of my graph is where node 6 (for example) belongs to?
Your help would be appreciated.
Thanks!

Best Answer

M=[1 2;2 5;3 4;4 6;6 7;6 8;6 9;6 10];
G=graph(M(:,1),M(:,2));
[bins,binsizes]=conncomp(G);
idx=[2,1];
binsizes=binsizes(idx);
bins=idx(bins)
bins = 1×10
     2     2     1     1     2     1     1     1     1     1

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