.TH nodes_2_path 1 "September 1995" "Scilab Group" "Scilab function"
.so man1/sci.an
.SH NAME
nodes_2_path - path from a set of nodes
.SH CALLING SEQUENCE
.nf
[p] = nodes_2_path(ns,g)
.fi
.SH PARAMETERS
.TP 3
ns
: row vector of integer numbers of the set of nodes
.TP 2
g
: graph-list
.TP 2
p
: row vector of integer numbers of the arcs of the path if it exists
.SH DESCRIPTION
\fVnodes_2_path\fR returns the path \fVp\fR corresponding to the node
sequence \fVns\fR given by its node numbers if it exists ; it returns
the empty vector \fV[]\fR otherwise.
.SH EXAMPLE
.nf
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];
gt=make_graph('foo',1,17,ta,he);
gt('node_x')=[283 163 63 57 164 164 273 271 339 384 504 513 439 623 631 757 642];
gt('node_y')=[59 133 223 318 227 319 221 324 432 141 209 319 428 443 187 151 301];
show_graph(gt,'rep');
ns=[1 10 15 16 17 14 11 12 13 9 7 8 6];
g1=gt; nodecolor=1*ones(gt('node_x')); nodecolor(ns)=11*ones(ns);
g1('node_color')=nodecolor;
show_graph(g1,'rep'); show_nodes(ns);
p=nodes_2_path(ns,gt);
g1=gt; edgecolor=1*ones(ta); edgecolor(p)=11*ones(p);
g1('edge_color')=edgecolor;
show_graph(g1,'rep'); show_arcs(p);
show_nodes(ns,'sup');
.fi
.SH SEE ALSO
path_2_nodes