Abdelrahman Said
70 lines
2.4 KiB
C
70 lines
2.4 KiB
C
/*
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igraph library.
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Copyright (C) 2008-2022 The igraph development team <igraph@igraph.org>
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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, see <https://www.gnu.org/licenses/>.
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*/
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#include <igraph.h>
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int main(void) {
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igraph_t graph;
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igraph_real_t weights_data[] = { 0, 2, 1, 0, 5, 2, 1, 1, 0, 2, 2, 8, 1, 1, 3, 1, 1, 4, 2, 1 };
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const igraph_vector_t weights =
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igraph_vector_view(weights_data, sizeof(weights_data) / sizeof(weights_data[0]));
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igraph_matrix_t res;
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igraph_real_t cutoff;
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/* Initialize the library. */
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igraph_setup();
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igraph_small(&graph, 10, IGRAPH_DIRECTED,
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0, 1, 0, 2, 0, 3, 1, 2, 1, 4, 1, 5,
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2, 3, 2, 6, 3, 2, 3, 6,
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4, 5, 4, 7, 5, 6, 5, 8, 5, 9,
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7, 5, 7, 8, 8, 9,
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5, 2,
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2, 1,
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-1);
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igraph_matrix_init(&res, 0, 0);
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printf("Unweighted distances:\n\n");
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igraph_distances(&graph, NULL, &res, igraph_vss_all(), igraph_vss_all(), IGRAPH_OUT);
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igraph_matrix_print(&res);
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cutoff = 3; /* distances longer than this will be returned as infinity */
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printf("\nUnweighted distances with a cutoff of %g:\n\n", cutoff);
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igraph_distances_cutoff(&graph, NULL, &res, igraph_vss_all(), igraph_vss_all(), IGRAPH_OUT, cutoff);
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igraph_matrix_print(&res);
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printf("\nWeighted distances:\n\n");
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igraph_distances(&graph, &weights, &res, igraph_vss_all(), igraph_vss_all(), IGRAPH_OUT);
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igraph_matrix_print(&res);
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cutoff = 8; /* distances longer than this will be returned as infinity */
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printf("\nWeighted distances with a cutoff of %g:\n\n", cutoff);
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igraph_distances_cutoff(&graph, &weights, &res, igraph_vss_all(), igraph_vss_all(), IGRAPH_OUT, cutoff);
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igraph_matrix_print(&res);
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igraph_matrix_destroy(&res);
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igraph_destroy(&graph);
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return 0;
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}
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