strong_connex — strong connected components
[nc,ncomp] = strong_connex(g)
integer, number of strong connected components
row vector of strong connected components
strong_connex returns the number nc
of strong connected components for the graph g and a
row vector ncomp giving the number of the strong
connected component for each node. For instance, if
i is a node number, ncomp(i) is the
number of the strong connected component to which node
i belongs.
ta=[1 1 2 2 2 3 4 4 5 6 6 6 7 7 7 8 9 10 12 12 13 13 13 14 15];
he=[2 6 3 4 5 1 3 5 1 7 10 11 5 8 9 5 8 11 10 11 9 11 15 13 14];
g=make_graph('foo',1,15,ta,he);
g.nodes.graphics.x=[197 191 106 194 296 305 305 418 422 432 552 550 549 416 548];
g.nodes.graphics.y=[76 181 276 278 276 83 174 281 177 86 175 90 290 397 399];
show_graph(g);
[nc,ncomp]=strong_connex(g);
colors=[2 7 5 29 24 1];
g=add_node_data(g,'component_number',ncomp)
g.nodes.graphics.colors(1,:)=colors(ncomp);
g.nodes.graphics.display='component_number';
show_graph(g);