meshavg.C File Reference

Go to the source code of this file.

Functions
int	main (int argc, char **argv)

Variables
unsigned char	dim = 2

Function Documentation

main()

int main	(	int	argc,
		char **	argv
	)

Definition at line 32 of file meshavg.C.

{
  LibMeshInit init(argc, argv);
 
  Mesh mesh1(init.comm(), dim);
  EquationSystems es1(mesh1);
 
  libMesh::out << "Usage: " << argv[0]
               << " outputsolution mesh firstsolution [secondsolution ...]" << std::endl;
 
  mesh1.read(argv[2]);
  libMesh::out << "Loaded mesh " << argv[2] << std::endl;
 
  mesh1.print_info();
 
  es1.read(argv[3],
           EquationSystems::READ_HEADER |
           EquationSystems::READ_DATA |
           EquationSystems::READ_BASIC_ONLY);
  libMesh::out << "Loaded first solution " << argv[3] << std::endl;
 
  es1.print_info();
 
  std::vector<std::string> sysnames;
  std::vector<std::unique_ptr<NumericVector<libMesh::Number>>> summed_solutions;
 
  for (unsigned int s = 0; s != es1.n_systems(); ++s)
    {
      sysnames.push_back(es1.get_system(s).name());
      summed_solutions.emplace_back(es1.get_system(s).solution->clone());
    }
 
  for (int i=4; i < argc; ++i)
    {
      Mesh mesh2(init.comm(), dim);
      EquationSystems es2(mesh2);
      mesh2.read(argv[2]);
      es2.read(argv[i],
               EquationSystems::READ_HEADER |
               EquationSystems::READ_DATA |
               EquationSystems::READ_BASIC_ONLY);
      libMesh::out << "Loaded next solution " << argv[i] << std::endl;
 
      for (auto s : index_range(sysnames))
        {
          libmesh_error_msg_if(!es2.has_system(sysnames[s]),
                               "EquationSystems object does not have " << sysnames[s]);
 
          (*summed_solutions[s]) += *es2.get_system(s).solution;
        }
    }
 
  int n_solutions = argc - 3;
 
  for (auto s : index_range(sysnames))
    {
      (*summed_solutions[s]) /= n_solutions;
      es1.get_system(s).solution->swap(*summed_solutions[s]);
      es1.get_system(s).solution->close();
    }
 
  NameBasedIO(mesh1).write_equation_systems (argv[1], es1);
 
  return 0;
}

References dim, libMesh::EquationSystems::get_system(), libMesh::EquationSystems::has_system(), libMesh::index_range(), main(), libMesh::EquationSystems::n_systems(), libMesh::out, libMesh::EquationSystems::print_info(), libMesh::MeshBase::print_info(), libMesh::UnstructuredMesh::read(), libMesh::EquationSystems::read(), libMesh::EquationSystems::READ_BASIC_ONLY, libMesh::EquationSystems::READ_DATA, libMesh::EquationSystems::READ_HEADER, and libMesh::NameBasedIO::write_equation_systems().

Variable Documentation

dim

unsigned char dim = 2

Definition at line 30 of file meshavg.C.

Referenced by main().