/* -*- mode: C -*- */ /* IGraph library. Copyright (C) 2006 Gabor Csardi <csardi@rmki.kfki.hu> MTA RMKI, Konkoly-Thege Miklos st. 29-33, Budapest 1121, Hungary 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> void igraph_vector_print(const igraph_vector_t *v) { long int i; for (i=0; i<igraph_vector_size(v); i++) { printf("%li ", (long int)VECTOR(*v)[i]); } printf("\n"); } int main() { igraph_t g; const igraph_vector_t v=IGRAPH_VECTOR_NULL; igraph_real_t edges1[] = { 0,1, 1,2, 2,2, 2,3, 2,4, 3,4 }; igraph_vector_t from, to; igraph_es_t it; igraph_integer_t size; long int i; igraph_vector_view(&v, edges1, sizeof(edges1)/sizeof(igraph_real_t)); /******************************************/ /* Directed graph */ /******************************************/ igraph_create(&g, &v, 0, IGRAPH_DIRECTED); /* {0,1} -> {2,3}, result should be { 1->2 } */ igraph_vector_init(&from, 2); VECTOR(from)[0]=0; VECTOR(from)[1]=1; igraph_vector_init(&to, 2); VECTOR(to) [0]=2; VECTOR(to) [1]=3; igraph_es_fromto(&g, &it, IGRAPH_VS_VECTOR(&g, &from), IGRAPH_VS_VECTOR(&g, &to), IGRAPH_DIRECTED); igraph_vector_clear(&from); igraph_vector_clear(&to); igraph_es_size(&g, &it, &size); printf("%ld\n", (long)size); while (!igraph_es_end(&g, &it)) { igraph_vector_push_back(&from, igraph_es_from(&g, &it)); igraph_vector_push_back(&to, igraph_es_to(&g, &it)); igraph_es_next(&g, &it); } igraph_vector_sort(&from); igraph_vector_sort(&to); igraph_vector_print(&from); igraph_vector_print(&to); igraph_es_destroy(&it); igraph_vector_destroy(&from); igraph_vector_destroy(&to); return 0; }