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path_2_nodes

set of nodes from a path

Calling Sequence

ns = path_2_nodes(p,g)

Parameters

p

row vector of integer numbers of the arcs of the path

g

a graph_data_structure.

ns

row vector of integer numbers of the set of nodes

Description

path_2_nodes returns the set of nodes ns corresponding to the path p given by its arc numbers ; if p is not a path, the empty vector [] is returned.

Examples

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;
p=[2 16 23 25 26 22 17 18 19 13 10 11];
g.edges.graphics.foreground(p)=color('red')
show_graph(g);

ns=path_2_nodes(p,g);
hilite_nodes(ns);

See Also


<< nodes_degrees Nodes - Vertices predecessors >>