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
|
line_graph Scilab Group Scilab function line_graph
NAME
line_graph - graph with nodes corresponding to edges
CALLING SEQUENCE
g1 = line_graph(g)
PARAMETERS
g : graph list of the old graph
g1 : graph list of the new graph
DESCRIPTION
line_graph returns the graph g1 with the nodes corresponding to the
edges of the graph g. g1 is defined in the following way: - its nodes
correspond to the edges of g - 2 nodes of the new graph are adjacent if
and only if the corresponding edges of the graph g are adjacent. The
coordinates of the nodes of g1 are given by the middle points of the
corresponding edges of g.
EXAMPLE
ta=[1 1 2 4 4 5 6 7 2 3 5 1];
he=[2 6 3 6 7 8 8 8 4 7 3 5];
g=make_graph('foo',0,8,ta,he);
g('node_x')=[281 284 360 185 405 182 118 45];
g('node_y')=[262 179 130 154 368 248 64 309];
show_graph(g);
g1=line_graph(g);
show_graph(g1,'new');
SEE ALSO
arc_graph
|
