connex — connected components
[nc,ncomp] = connex(g)
connex returns the number nc of connected components of
graph g and a row vector ncomp giving the number of the connected
component for each node. For instance, if i is a node number,
ncomp(i) is the number of the connected component to
which node number i belongs.
ta=[1 1 2 2 2 3 4 4 5 6 7 7 7 8 9 10 12 12 13 13 14 15];
he=[2 6 3 4 5 1 3 5 1 7 5 8 9 5 8 11 10 11 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]=connex(g)
g.nodes.graphics.colors(2,:)=10+ncomp;
show_graph(g);
g=delete_edges([13 11],g);
show_graph(g);
[nc,ncomp]=connex(g)
g.nodes.graphics.colors(2,:)=10+ncomp;
show_graph(g);