libMesh
Functions
meshnorm.C File Reference

Go to the source code of this file.

Functions

void output_norms (const System &sys, const NumericVector< Number > &vec, const std::string &vecname)
 
int main (int argc, char **argv)
 

Function Documentation

int main ( int  argc,
char **  argv 
)

Definition at line 52 of file meshnorm.C.

References libMesh::LibMeshInit::comm(), libMesh::System::get_vector(), libMesh::TriangleWrapper::init(), mesh, libMesh::System::n_vectors(), libMesh::out, output_norms(), libMesh::BasicOStreamProxy< charT, traits >::precision(), libMesh::MeshBase::print_info(), libMesh::MeshBase::read(), libMesh::EquationSystems::READ_ADDITIONAL_DATA, libMesh::EquationSystems::READ_BASIC_ONLY, libMesh::EquationSystems::READ_DATA, libMesh::EquationSystems::READ_HEADER, libMesh::System::solution, libMesh::sys, and libMesh::System::vector_name().

53 {
54  LibMeshInit init (argc, argv);
55 
56  Mesh mesh(init.comm());
58 
59  libMesh::out << "Usage: " << argv[0]
60  << " mesh solution" << std::endl;
61 
62  libMesh::out << "Loading..." << std::endl;
63 
64  mesh.read(argv[1]);
65  libMesh::out << "Loaded mesh " << argv[1] << std::endl;
66  mesh.print_info();
67 
68  es.read(argv[2], EquationSystems::READ_HEADER |
69  EquationSystems::READ_DATA |
70  EquationSystems::READ_ADDITIONAL_DATA |
71  EquationSystems::READ_BASIC_ONLY);
72  libMesh::out << "Loaded solution " << argv[2] << std::endl;
73  es.print_info();
74 
76 
77  for (unsigned int i = 0; i != es.n_systems(); ++i)
78  {
79  System & sys = es.get_system(i);
80 
81  output_norms(sys, *sys.solution, std::string("solution"));
82  for (unsigned int j = 0; j != sys.n_vectors(); ++j)
83  output_norms(sys, sys.get_vector(j), sys.vector_name(j));
84  }
85 }
This is the EquationSystems class.
ImplicitSystem & sys
MeshBase & mesh
The LibMeshInit class, when constructed, initializes the dependent libraries (e.g.
Definition: libmesh.h:62
This is the base class for classes which contain information related to any physical process that mig...
Definition: system.h:76
void init(triangulateio &t)
Initializes the fields of t to NULL/0 as necessary.
UniquePtr< NumericVector< Number > > solution
Data structure to hold solution values.
Definition: system.h:1523
void output_norms(const System &sys, const NumericVector< Number > &vec, const std::string &vecname)
Definition: meshnorm.C:29
const NumericVector< Number > & get_vector(const std::string &vec_name) const
Definition: system.C:794
OStreamProxy out
The Mesh class is a thin wrapper, around the ReplicatedMesh class by default.
Definition: mesh.h:50
virtual void read(const std::string &name, void *mesh_data=libmesh_nullptr, bool skip_renumber_nodes_and_elements=false, bool skip_find_neighbors=false)=0
Interfaces for reading/writing a mesh to/from a file.
void print_info(std::ostream &os=libMesh::out) const
Prints relevant information about the mesh.
Definition: mesh_base.C:448
const std::string & vector_name(const unsigned int vec_num) const
Definition: system.C:852
std::streamsize precision() const
Get the associated write precision.
unsigned int n_vectors() const
Definition: system.h:2214
void output_norms ( const System sys,
const NumericVector< Number > &  vec,
const std::string &  vecname 
)

Definition at line 29 of file meshnorm.C.

References libMesh::System::calculate_norm(), libMesh::DISCRETE_L1, libMesh::DISCRETE_L2, libMesh::DISCRETE_L_INF, libMesh::H1, libMesh::H1_SEMINORM, libMesh::L1, libMesh::L2, libMesh::L_INF, libMesh::System::n_vars(), libMesh::System::name(), libMesh::out, libMesh::Real, and libMesh::System::variable_name().

Referenced by main().

30 {
31  for (unsigned int k = 0; k != sys.n_vars(); ++k)
32  {
33  libMesh::out << "Norms in system " << sys.name() <<
34  ", vector " << vecname <<
35  ", variable " << sys.variable_name(k) << ":" << std::endl;
36  Real l1_vecnorm = sys.calculate_norm(vec, k, DISCRETE_L1);
37  libMesh::out << "l1 norm: " << l1_vecnorm << std::endl;
38  if (l1_vecnorm)
39  {
40  libMesh::out << "l2 norm: " << sys.calculate_norm(vec, k, DISCRETE_L2) << std::endl;
41  libMesh::out << "linf norm: " << sys.calculate_norm(vec, k, DISCRETE_L_INF) << std::endl;
42  libMesh::out << "H1 norm: " << sys.calculate_norm(vec, k, H1) << std::endl;
43  libMesh::out << "L1 norm: " << sys.calculate_norm(vec, k, L1) << std::endl;
44  libMesh::out << "L2 norm: " << sys.calculate_norm(vec, k, L2) << std::endl;
45  libMesh::out << "Linf norm: " << sys.calculate_norm(vec, k, L_INF) << std::endl;
46  libMesh::out << "H1 seminorm: " << sys.calculate_norm(vec, k, H1_SEMINORM) << std::endl;
47  libMesh::out << "H1 norm: " << sys.calculate_norm(vec, k, H1) << std::endl;
48  }
49  }
50 }
const std::string & variable_name(const unsigned int i) const
Definition: system.h:2134
const std::string & name() const
Definition: system.h:1998
Real calculate_norm(const NumericVector< Number > &v, unsigned int var, FEMNormType norm_type, std::set< unsigned int > *skip_dimensions=libmesh_nullptr) const
Definition: system.C:1383
DIE A HORRIBLE DEATH HERE typedef LIBMESH_DEFAULT_SCALAR_TYPE Real
OStreamProxy out
unsigned int n_vars() const
Definition: system.h:2086