Abdelrahman Said
62 lines
2.0 KiB
C
62 lines
2.0 KiB
C
/*
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igraph library.
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Copyright (C) 2007-2012 Gabor Csardi <csardi.gabor@gmail.com>
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334 Harvard street, Cambridge MA, 02139 USA
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This program is free software; you can redistribute it and/or modify
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it under the terms of the GNU General Public License as published by
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the Free Software Foundation; either version 2 of the License, or
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(at your option) any later version.
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This program is distributed in the hope that it will be useful,
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but WITHOUT ANY WARRANTY; without even the implied warranty of
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MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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GNU General Public License for more details.
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You should have received a copy of the GNU General Public License
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along with this program; if not, write to the Free Software
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Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA
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02110-1301 USA
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*/
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#include <igraph.h>
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int main(void) {
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igraph_t g;
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igraph_matrix_int_t merges;
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igraph_vector_t modularity;
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igraph_int_t no_of_nodes;
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igraph_int_t i;
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/* Initialize the library. */
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igraph_setup();
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igraph_small(&g, 5, IGRAPH_UNDIRECTED,
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0, 1, 0, 2, 0, 3, 0, 4, 1, 2, 1, 3, 1, 4, 2, 3, 2, 4, 3, 4,
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5, 6, 5, 7, 5, 8, 5, 9, 6, 7, 6, 8, 6, 9, 7, 8, 7, 9, 8, 9, 0, 5, 4, 9, -1);
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igraph_vector_init(&modularity, 0);
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igraph_matrix_int_init(&merges, 0, 0);
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igraph_community_walktrap(&g,
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NULL /* no weights */,
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4 /* steps */,
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&merges, &modularity,
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/* membership=*/ NULL);
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no_of_nodes = igraph_vcount(&g);
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printf("Merges:\n");
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for (i = 0; i < igraph_matrix_int_nrow(&merges); i++) {
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printf("%2.1" IGRAPH_PRId " + %2." IGRAPH_PRId " -> %2." IGRAPH_PRId " (modularity %4.2f)\n",
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MATRIX(merges, i, 0), MATRIX(merges, i, 1),
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no_of_nodes + i, VECTOR(modularity)[i]);
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}
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igraph_destroy(&g);
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igraph_matrix_int_destroy(&merges);
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igraph_vector_destroy(&modularity);
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return 0;
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}
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