[igraph] igraph_matrix_copy_to()

[Fernando Martinez]

Dear All,

I'm having problems when using the function igraph_matrix_copy_to()

As I understand it, this function allows to copy an igraph matrix into a normal 
C matrix. However, I get an error when compiling.

My code is the following:

@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@



#include <igraph.h>

int main()
{


        igraph_matrix_t matriz;
        igraph_vector_t vec;
        igraph_vs_t from;
        igraph_neimode_t mode = IGRAPH_ALL;

        long numberofnodes=512;

        long distances[numberofnodes][numberofnodes];

        igraph_vs_all(&from);

        igraph_shortest_paths(&graph, &matriz, from, mode);

        igraph_matrix_copy_to(&matriz, distances);

        return(0);

}


@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@

I compile in Unbuntu 9.04

g++ -I/igraph -L/lib w1024.cpp -ligraph -lgsl -lgslcblas -o w1024

and gives error for the line of "igraph_matrix_copy_to(&matriz, distances);":

error: cannot convert `long int (*)[((long unsigned int)((long 
int)numberofnodes))]' to `igraph_real_t*' for argument `2' to `int 
igraph_matrix_copy_to(const igraph_matrix_t*, igraph_real_t*)'

Any ideas on how to pass the data from the igraph matrix to a C matrix?


Cheers,
Fernando