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