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
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
|
/* -*- mode: C -*- */
/*
IGraph library.
Copyright (C) 2010-2012 Gabor Csardi <csardi.gabor@gmail.com>
334 Harvard street, Cambridge, MA 02139 USA
This program is free software; you can redistribute it and/or modify
it under the terms of the GNU General Public License as published by
the Free Software Foundation; either version 2 of the License, or
(at your option) any later version.
This program is distributed in the hope that it will be useful,
but WITHOUT ANY WARRANTY; without even the implied warranty of
MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
GNU General Public License for more details.
You should have received a copy of the GNU General Public License
along with this program; if not, write to the Free Software
Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA
02110-1301 USA
*/
#include <igraph.h>
igraph_error_t mf(const igraph_vector_t *input, igraph_real_t *output) {
*output = 0.0;
return IGRAPH_SUCCESS;
}
static void simplify_write_destroy(igraph_t *g, igraph_attribute_combination_t *comb) {
igraph_simplify(g, /*multiple=*/ true, /*loops=*/ true, comb);
igraph_write_graph_graphml(g, stdout, /*prefixattr=*/ true);
igraph_attribute_combination_destroy(comb);
igraph_destroy(g);
}
static void weight_test(igraph_t *g, igraph_attribute_combination_type_t weight_attr) {
igraph_t g2;
igraph_attribute_combination_t comb;
igraph_copy(&g2, g);
igraph_attribute_combination(&comb,
"weight", weight_attr,
"", IGRAPH_ATTRIBUTE_COMBINE_IGNORE,
IGRAPH_NO_MORE_ATTRIBUTES);
simplify_write_destroy(&g2, &comb);
}
int main(void) {
igraph_t g, g2;
igraph_vector_t weight;
igraph_attribute_combination_t comb;
igraph_set_attribute_table(&igraph_cattribute_table);
igraph_small(&g, 4, IGRAPH_DIRECTED,
0, 1, 0, 1, 0, 1,
1, 2, 2, 3,
-1);
igraph_vector_init_range(&weight, 1, igraph_ecount(&g) + 1);
SETEANV(&g, "weight", &weight);
igraph_vector_destroy(&weight);
weight_test(&g, IGRAPH_ATTRIBUTE_COMBINE_SUM);
weight_test(&g, IGRAPH_ATTRIBUTE_COMBINE_PROD);
weight_test(&g, IGRAPH_ATTRIBUTE_COMBINE_MIN);
weight_test(&g, IGRAPH_ATTRIBUTE_COMBINE_MAX);
weight_test(&g, IGRAPH_ATTRIBUTE_COMBINE_FIRST);
weight_test(&g, IGRAPH_ATTRIBUTE_COMBINE_LAST);
weight_test(&g, IGRAPH_ATTRIBUTE_COMBINE_MEAN);
/* ****************************************************** */
igraph_copy(&g2, &g);
igraph_attribute_combination(&comb,
"weight", IGRAPH_ATTRIBUTE_COMBINE_FUNCTION, mf,
"", IGRAPH_ATTRIBUTE_COMBINE_IGNORE,
IGRAPH_NO_MORE_ATTRIBUTES);
simplify_write_destroy(&g2, &comb);
/* ****************************************************** */
igraph_copy(&g2, &g);
igraph_attribute_combination(&comb,
"", IGRAPH_ATTRIBUTE_COMBINE_MEAN,
IGRAPH_NO_MORE_ATTRIBUTES);
simplify_write_destroy(&g2, &comb);
/* ****************************************************** */
igraph_destroy(&g);
return 0;
}
|
