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
|
contract_edge Scilab Group Scilab function contract_edge
NAME
contract_edge - contracts edges between two nodes
CALLING SEQUENCE
g1 = contract_edge(i,j,g)
PARAMETERS
i : integer, number of start or end node of edge
j : integer, number of end or start node of edge
g : graph list
g1 : graph list of the new graph
DESCRIPTION
contract_edge returns the graph g1, the edges between the nodes number i
and j being deleted, the nodes being reduced to one node with the same
name as node i and located at the middle point between the 2 previous
nodes.
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);
g1=contract_edge(10,13,g);
show_graph(g1,'new');
SEE ALSO
add_edge, add_node, delete_arcs, delete_nodes
|
