nodes_2_path — path from a set of nodes
p = nodes_2_path(ns,g)
row vector of integer numbers of the set of nodes
row vector of integer numbers of the arcs of the path if it exists
nodes_2_path returns the path p corresponding to the node
sequence ns given by its node numbers if it exists ; it returns
the empty vector [] otherwise.
ta=[1 1 2 2 2 3 4 5 5 7 8 8 9 10 10 10 11 12 13 13 13 14 15 16 16 17 17];
he=[2 10 3 5 7 4 2 4 6 8 6 9 7 7 11 15 12 13 9 10 14 11 16 1 17 14 15];
g=make_graph('foo',1,17,ta,he);
g.nodes.graphics.x=[283 163 63 57 164 164 273 271 339 384 504 513 439 623 631 757 642]/2;
g.nodes.graphics.y=[59 133 223 318 227 319 221 324 432 141 209 319 428 443 187 151 301]/2;
show_graph(g);
ns=[1 10 15 16 17 14 11 12 13 9 7 8 6];
g.nodes.graphics.colors(2,ns)=color('red');
show_graph(g);
p=nodes_2_path(ns,g);
g.edges.graphics.foreground(p)=color('red');
show_graph(g);