int main() {
igraph_t g;
igraph_vector_t y;
/* turn on attribute handling */
igraph_i_set_attribute_table(&igraph_cattribute_table);
/* Create a graph, add some attributes and save it as a GraphML file */
igraph_famous(&g, "Petersen");
SETGAS(&g, "name", "Petersen's graph");
SETGAN(&g, "vertices", igraph_vcount(&g));
SETGAN(&g, "edges", igraph_ecount(&g));
igraph_vector_init_seq(&y, 1, igraph_vcount(&g));
SETVANV(&g, "id", &y);
igraph_vector_destroy(&y);
SETVAS(&g, "name", 0, "foo");
SETVAS(&g, "name", 1, "foobar");
igraph_vector_init_seq(&y, 1, igraph_ecount(&g));
SETEANV(&g, "id", &y);
igraph_vector_destroy(&y);
SETEAS(&g, "name", 0, "FOO");
SETEAS(&g, "name", 1, "FOOBAR");
igraph_write_graph_gml(&g, stdout, 0, "");
igraph_write_graph_graphml(&g, stdout);
igraph_destroy(&g);
return 0;
}
void graph_save(igraph_t *graph, char *name) {
FILE *file;
file = fopen(name, "wb");
igraph_write_graph_graphml(graph, file);
fclose(file);
}
int main() {
igraph_t g, g2;
igraph_attribute_combination_t comb;
igraph_i_set_attribute_table(&igraph_cattribute_table);
igraph_small(&g, 4, IGRAPH_DIRECTED,
0, 1, 0, 1, 0, 1,
1, 2, 2, 3,
-1);
SETEAB(&g, "type", 0, 1);
SETEAB(&g, "type", 1, 1);
SETEAB(&g, "type", 2, 0);
SETEAB(&g, "type", 3, 0);
SETEAB(&g, "type", 4, 1);
/* ****************************************************** */
igraph_copy(&g2, &g);
igraph_attribute_combination(&comb,
"weight", IGRAPH_ATTRIBUTE_COMBINE_SUM,
"type", IGRAPH_ATTRIBUTE_COMBINE_FIRST,
"", IGRAPH_ATTRIBUTE_COMBINE_IGNORE,
IGRAPH_NO_MORE_ATTRIBUTES);
igraph_simplify(&g2, /*multiple=*/ 1, /*loops=*/ 1, &comb);
igraph_attribute_combination_destroy(&comb);
igraph_write_graph_graphml(&g2, stdout, /*prefixattr=*/ 1);
igraph_destroy(&g2);
/* ****************************************************** */
/* ****************************************************** */
igraph_copy(&g2, &g);
igraph_attribute_combination(&comb,
"", IGRAPH_ATTRIBUTE_COMBINE_LAST,
IGRAPH_NO_MORE_ATTRIBUTES);
igraph_simplify(&g2, /*multiple=*/ 1, /*loops=*/ 1, &comb);
igraph_attribute_combination_destroy(&comb);
igraph_write_graph_graphml(&g2, stdout, /*prefixattr=*/ 1);
igraph_destroy(&g2);
/* ****************************************************** */
/* ****************************************************** */
igraph_copy(&g2, &g);
igraph_attribute_combination(&comb,
"", IGRAPH_ATTRIBUTE_COMBINE_IGNORE,
"type", IGRAPH_ATTRIBUTE_COMBINE_LAST,
IGRAPH_NO_MORE_ATTRIBUTES);
igraph_simplify(&g2, /*multiple=*/ 1, /*loops=*/ 1, &comb);
igraph_attribute_combination_destroy(&comb);
igraph_write_graph_graphml(&g2, stdout, /*prefixattr=*/ 1);
igraph_destroy(&g2);
/* ****************************************************** */
/* ****************************************************** */
igraph_copy(&g2, &g);
igraph_attribute_combination(&comb,
"", IGRAPH_ATTRIBUTE_COMBINE_IGNORE,
"type", IGRAPH_ATTRIBUTE_COMBINE_SUM,
IGRAPH_NO_MORE_ATTRIBUTES);
igraph_simplify(&g2, /*multiple=*/ 1, /*loops=*/ 1, &comb);
igraph_attribute_combination_destroy(&comb);
igraph_write_graph_graphml(&g2, stdout, /*prefixattr=*/ 1);
igraph_destroy(&g2);
/* ****************************************************** */
/* ****************************************************** */
igraph_copy(&g2, &g);
igraph_attribute_combination(&comb,
"", IGRAPH_ATTRIBUTE_COMBINE_IGNORE,
"type", IGRAPH_ATTRIBUTE_COMBINE_PROD,
IGRAPH_NO_MORE_ATTRIBUTES);
igraph_simplify(&g2, /*multiple=*/ 1, /*loops=*/ 1, &comb);
igraph_attribute_combination_destroy(&comb);
igraph_write_graph_graphml(&g2, stdout, /*prefixattr=*/ 1);
igraph_destroy(&g2);
/* ****************************************************** */
/* ****************************************************** */
igraph_copy(&g2, &g);
igraph_attribute_combination(&comb,
"", IGRAPH_ATTRIBUTE_COMBINE_IGNORE,
"type", IGRAPH_ATTRIBUTE_COMBINE_MIN,
IGRAPH_NO_MORE_ATTRIBUTES);
igraph_simplify(&g2, /*multiple=*/ 1, /*loops=*/ 1, &comb);
igraph_attribute_combination_destroy(&comb);
igraph_write_graph_graphml(&g2, stdout, /*prefixattr=*/ 1);
igraph_destroy(&g2);
/* ****************************************************** */
/* ****************************************************** */
igraph_copy(&g2, &g);
igraph_attribute_combination(&comb,
"", IGRAPH_ATTRIBUTE_COMBINE_IGNORE,
"type", IGRAPH_ATTRIBUTE_COMBINE_MAX,
IGRAPH_NO_MORE_ATTRIBUTES);
igraph_simplify(&g2, /*multiple=*/ 1, /*loops=*/ 1, &comb);
igraph_attribute_combination_destroy(&comb);
igraph_write_graph_graphml(&g2, stdout, /*prefixattr=*/ 1);
igraph_destroy(&g2);
/* ****************************************************** */
/* ****************************************************** */
igraph_copy(&g2, &g);
igraph_attribute_combination(&comb,
"", IGRAPH_ATTRIBUTE_COMBINE_IGNORE,
"type", IGRAPH_ATTRIBUTE_COMBINE_MEAN,
IGRAPH_NO_MORE_ATTRIBUTES);
igraph_simplify(&g2, /*multiple=*/ 1, /*loops=*/ 1, &comb);
igraph_attribute_combination_destroy(&comb);
igraph_write_graph_graphml(&g2, stdout, /*prefixattr=*/ 1);
igraph_destroy(&g2);
/* ****************************************************** */
/* ****************************************************** */
igraph_copy(&g2, &g);
igraph_attribute_combination(&comb,
"", IGRAPH_ATTRIBUTE_COMBINE_IGNORE,
"type", IGRAPH_ATTRIBUTE_COMBINE_MEDIAN,
IGRAPH_NO_MORE_ATTRIBUTES);
igraph_simplify(&g2, /*multiple=*/ 1, /*loops=*/ 1, &comb);
igraph_attribute_combination_destroy(&comb);
igraph_write_graph_graphml(&g2, stdout, /*prefixattr=*/ 1);
igraph_destroy(&g2);
/* ****************************************************** */
igraph_destroy(&g);
return 0;
}
int main() {
igraph_t g, g2;
igraph_vector_t weight;
igraph_attribute_combination_t comb;
igraph_i_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_seq(&weight, 1, igraph_ecount(&g));
SETEANV(&g, "weight", &weight);
igraph_vector_destroy(&weight);
/* ****************************************************** */
igraph_copy(&g2, &g);
igraph_attribute_combination(&comb,
"weight", IGRAPH_ATTRIBUTE_COMBINE_SUM,
"", IGRAPH_ATTRIBUTE_COMBINE_IGNORE,
IGRAPH_NO_MORE_ATTRIBUTES);
igraph_simplify(&g2, /*multiple=*/ 1, /*loops=*/ 1, &comb);
igraph_attribute_combination_destroy(&comb);
igraph_write_graph_graphml(&g2, stdout);
igraph_destroy(&g2);
/* ****************************************************** */
/* ****************************************************** */
igraph_copy(&g2, &g);
igraph_attribute_combination(&comb,
"weight", IGRAPH_ATTRIBUTE_COMBINE_PROD,
"", IGRAPH_ATTRIBUTE_COMBINE_IGNORE,
IGRAPH_NO_MORE_ATTRIBUTES);
igraph_simplify(&g2, /*multiple=*/ 1, /*loops=*/ 1, &comb);
igraph_attribute_combination_destroy(&comb);
igraph_write_graph_graphml(&g2, stdout);
igraph_destroy(&g2);
/* ****************************************************** */
/* ****************************************************** */
igraph_copy(&g2, &g);
igraph_attribute_combination(&comb,
"weight", IGRAPH_ATTRIBUTE_COMBINE_MIN,
"", IGRAPH_ATTRIBUTE_COMBINE_IGNORE,
IGRAPH_NO_MORE_ATTRIBUTES);
igraph_simplify(&g2, /*multiple=*/ 1, /*loops=*/ 1, &comb);
igraph_attribute_combination_destroy(&comb);
igraph_write_graph_graphml(&g2, stdout);
igraph_destroy(&g2);
/* ****************************************************** */
/* ****************************************************** */
igraph_copy(&g2, &g);
igraph_attribute_combination(&comb,
"weight", IGRAPH_ATTRIBUTE_COMBINE_MAX,
"", IGRAPH_ATTRIBUTE_COMBINE_IGNORE,
IGRAPH_NO_MORE_ATTRIBUTES);
igraph_simplify(&g2, /*multiple=*/ 1, /*loops=*/ 1, &comb);
igraph_attribute_combination_destroy(&comb);
igraph_write_graph_graphml(&g2, stdout);
igraph_destroy(&g2);
/* ****************************************************** */
/* ****************************************************** */
igraph_copy(&g2, &g);
igraph_attribute_combination(&comb,
"weight", IGRAPH_ATTRIBUTE_COMBINE_FIRST,
"", IGRAPH_ATTRIBUTE_COMBINE_IGNORE,
IGRAPH_NO_MORE_ATTRIBUTES);
igraph_simplify(&g2, /*multiple=*/ 1, /*loops=*/ 1, &comb);
igraph_attribute_combination_destroy(&comb);
igraph_write_graph_graphml(&g2, stdout);
igraph_destroy(&g2);
/* ****************************************************** */
/* ****************************************************** */
igraph_copy(&g2, &g);
igraph_attribute_combination(&comb,
"weight", IGRAPH_ATTRIBUTE_COMBINE_LAST,
"", IGRAPH_ATTRIBUTE_COMBINE_IGNORE,
IGRAPH_NO_MORE_ATTRIBUTES);
igraph_simplify(&g2, /*multiple=*/ 1, /*loops=*/ 1, &comb);
igraph_attribute_combination_destroy(&comb);
igraph_write_graph_graphml(&g2, stdout);
igraph_destroy(&g2);
/* ****************************************************** */
/* ****************************************************** */
igraph_copy(&g2, &g);
igraph_attribute_combination(&comb,
"weight", IGRAPH_ATTRIBUTE_COMBINE_MEAN,
"", IGRAPH_ATTRIBUTE_COMBINE_IGNORE,
IGRAPH_NO_MORE_ATTRIBUTES);
igraph_simplify(&g2, /*multiple=*/ 1, /*loops=*/ 1, &comb);
igraph_attribute_combination_destroy(&comb);
igraph_write_graph_graphml(&g2, stdout);
igraph_destroy(&g2);
/* ****************************************************** */
/* ****************************************************** */
igraph_copy(&g2, &g);
igraph_attribute_combination(&comb,
"weight", IGRAPH_ATTRIBUTE_COMBINE_FUNCTION, mf,
"", IGRAPH_ATTRIBUTE_COMBINE_IGNORE,
IGRAPH_NO_MORE_ATTRIBUTES);
igraph_simplify(&g2, /*multiple=*/ 1, /*loops=*/ 1, &comb);
igraph_attribute_combination_destroy(&comb);
igraph_write_graph_graphml(&g2, stdout);
igraph_destroy(&g2);
/* ****************************************************** */
/* ****************************************************** */
igraph_copy(&g2, &g);
igraph_attribute_combination(&comb,
"", IGRAPH_ATTRIBUTE_COMBINE_MEAN,
IGRAPH_NO_MORE_ATTRIBUTES);
igraph_simplify(&g2, /*multiple=*/ 1, /*loops=*/ 1, &comb);
igraph_attribute_combination_destroy(&comb);
igraph_write_graph_graphml(&g2, stdout);
igraph_destroy(&g2);
/* ****************************************************** */
igraph_destroy(&g);
return 0;
}
int main(int argc, char **argv) {
igraph_t g;
igraph_error_handler_t* oldhandler;
igraph_warning_handler_t* oldwarnhandler;
int result;
FILE *ifile, *ofile;
igraph_i_set_attribute_table(&igraph_cattribute_table);
/* GraphML */
ifile=fopen("test.gxl", "r");
if (ifile==0) {
return 10;
}
oldhandler=igraph_set_error_handler(igraph_error_handler_ignore);
oldwarnhandler=igraph_set_warning_handler(custom_warning_handler);
if ((result=igraph_read_graph_graphml(&g, ifile, 0))) {
/* maybe it is simply disabled at compile-time */
if (result == IGRAPH_UNIMPLEMENTED) return 77;
return 1;
}
igraph_set_error_handler(oldhandler);
fclose(ifile);
/* Write it back */
ofile=fopen("test2.gxl", "w");
/* If we can't create the test file, just skip the test */
if (ofile) {
if ((result=igraph_write_graph_graphml(&g, ofile, /*prefixattr=*/ 1))) {
return 1;
}
fclose(ofile);
unlink("test2.gxl");
}
dump_graph("The directed graph:\n", &g);
igraph_destroy(&g);
/* The same with undirected graph */
ifile=fopen("test.gxl", "r");
if ((result=igraph_read_graph_graphml(&g, ifile, 0))) {
return 1;
}
fclose(ifile);
dump_graph("The undirected graph:\n", &g);
igraph_destroy(&g);
/* Test a GraphML file with default attributes */
ifile=fopen("graphml-default-attrs.xml", "r");
if ((result=igraph_read_graph_graphml(&g, ifile, 0))) {
return 1;
}
fclose(ifile);
dump_graph("The directed graph:\n", &g);
dump_vertex_attribute_bool("type", &g);
dump_vertex_attribute_string("gender", &g);
dump_vertex_attribute_numeric("age", &g);
dump_vertex_attribute_bool("retired", &g);
igraph_destroy(&g);
/* Test a GraphML file with namespaces */
ifile=fopen("graphml-namespace.xml", "r");
if ((result=igraph_read_graph_graphml(&g, ifile, 0))) {
return 1;
}
fclose(ifile);
dump_graph("The undirected graph:\n", &g);
igraph_destroy(&g);
/* Restore the old warning handler */
igraph_set_warning_handler(oldwarnhandler);
/* There were sometimes problems with this file */
/* Only if called from R though, and only on random occasions, once in every
ten reads. Do testing here doesn't make much sense, but if we have the file
then let's do it anyway. */
ifile=fopen("graphml-hsa05010.xml", "r");
igraph_read_graph_graphml(&g, ifile, 0);
fclose(ifile);
igraph_destroy(&g);
return 0;
}