The “res” vector that you pass in to igraph_get_all_shortest_paths must be initialized as well using igraph_vector_ptr_init(&res, 0);
--
T.
On Wednesday, 26 February 2014 at
11:32, Sana Rahim wrote:
> Thank you for reply. But when i initialize it i get segmentation fault.
>
> #include<igraph.h>
> void main()
> {
> igraph_t graph;
> igraph_vector_t v;
> igraph_vector_ptr_t res;
> igraph_vector_t nrgeo;
>
> igraph_real_t edges[] = {1, 2, 1, 4, 2, 3, 3, 7, 4, 5, 5, 6, 6, 9, 7, 8, 8, 9};
>
> igraph_vector_view(&v, edges, sizeof(edges)/sizeof(double));
>
> igraph_create(&graph,&v, 0, IGRAPH_UNDIRECTED);
>
>
> igraph_get_all_shortest_paths(&graph, &res, &nrgeo, 1, igraph_vss_seq(2,8), IGRAPH_ALL);
>
> igraph_destroy(&graph);
>
> }
>
> Regards,
>
>
> On Tuesday, 25 February 2014 6:52 PM, Gábor Csárdi <
address@hidden (mailto:
address@hidden)> wrote:
> See
http://igraph.org/c/doc/igraph-Iterators.html>
> Gabor
>
>
> On Mon, Feb 24, 2014 at 11:45 PM, Sana Rahim <
address@hidden (mailto:
address@hidden)> wrote:
> > Hi, thanks for immediate reply. How should I initialize vs? When i initialize it like igraph_vs_t vs=3 or give value to vs , it says invalid initializer.
> >
> > Regards
> >
> >
> > On Tuesday, 25 February 2014 1:28 AM, Gábor Csárdi <
address@hidden (mailto:
address@hidden)> wrote:
> > You never initialize vs.
> >
> > G.
> >
> >
> > On Mon, Feb 24, 2014 at 2:35 PM, Sana Rahim <
address@hidden (mailto:
address@hidden)> wrote:
> > > Hi, when I run the following code i get this error Error at iterators.c:769 :Cannot create iterator, invalid selector, Invalid value
> > > Aborted.
> > > igraph_t graph;
> > > igraph_vector_t v;
> > > igraph_vector_ptr_t vertices;
> > > igraph_vector_ptr_t edges1;
> > > igraph_vs_t vs;
> > >
igraph_matrix_t res;
> > > igraph_vector_ptr_t res1;
> > > igraph_vector_t nrgeo;
> > > igraph_real_t edges[] = {1, 2, 1, 4, 2, 3, 3, 7, 4, 5, 5, 6, 6, 9, 7, 8, 8, 9};
> > > igraph_vector_view(&v, edges, sizeof(edges)/sizeof(double));
> > > igraph_create(&graph,&v, 0, IGRAPH_UNDIRECTED);
> > > igraph_get_all_shortest_paths(&graph, &res1, &nrgeo, 1, vs, IGRAPH_ALL);
> > > igraph_destroy(&graph);
> > >
> > > Where am I making a mistake, please help.
> > >
> > > Regards
> > >
> > > _______________________________________________
> > > igraph-help mailing list
> > >
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address@hidden)
> > >
https://lists.nongnu.org/mailman/listinfo/igraph-help> >
> >
> >
> >
> >
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> >
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> >
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