 #include <vector>
 #include <sstream>
 #include <cmath>
-#include <csignal>
 // #define DG_DEBUG
 
 

        //////////////////////////write fields////////////////////////
        start[0] = i;
        err = nc_open(argv[2], NC_WRITE, &ncid);
        ns_ncid :: ncid = ncid;
        std::cout << "****************** Opened: ncid = " << ncid << ", ns_ncid::ncid = " << ns_ncid :: ncid << std::endl;
        for(unsigned j = 0; j < 2; j++)
        {
            dg::blas2::symv( interpolate, y0[j], transferD);

   - writes outputs to a given outputfile using hdf5. 
        density fields are the real densities in XSPACE ( not logarithmic values)
*/

int main( int argc, char* argv[])
{
