1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
|
delete_arcs(1) Scilab function delete_arcs(1)
NAME
delete_arcs - deletes all the arcs or edges between a set of nodes
CALLING SEQUENCE
g1 = delete_arcs(ij,g)
PARAMETERS
ij : matrix of integers (number of nodes)
g : graph list
g1 : graph list of the new graph without the arcs or edges defined by ij
DESCRIPTION
If g is a directed graph, delete_arcs returns the graph g1 with the arcs
defined by matrix ij being deleted. ij must be a n x 2 matrix of node
numbers: the n arcs to be deleted are defined by couples of nodes (ij(i,1),
ij(i,2)).
If g is an undirected graph, the edges corresponding to matrix ij are
deleted.
EXAMPLE
ta=[1 1 2 2 2 3 4 5 5 7 8 8 9 10 10 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 13 13 15 12 13 9 10 14 11 16 1 17 14 15];
g=make_graph('foo',1,17,ta,he);
g('node_x')=[283 163 63 57 164 164 273 271 339 384 504 513 439 623 631 757 642];
g('node_y')=[59 133 223 318 227 319 221 324 432 141 209 319 428 443 187 151 301];
show_graph(g);
ij=[13 10;8 6;5 4;4 2];
gt=delete_arcs(ij,g);
show_graph(gt,'new');
g('directed')=0;
gt=delete_arcs(ij,g);
show_graph(gt,'new');
SEE ALSO
add_edge, add_node, delete_nodes
|
