Nektar::FieldUtils::ProcessInterpField Class Reference

This processing module interpolates one field to another. More...

#include <ProcessInterpField.h>

Inheritance diagram for Nektar::FieldUtils::ProcessInterpField:

Collaboration diagram for Nektar::FieldUtils::ProcessInterpField:

Public Member Functions
	ProcessInterpField (FieldSharedPtr f)
virtual	~ProcessInterpField ()
virtual void	Process (po::variables_map &vm)
	Write mesh to output file. More...
void	PrintProgressbar (const int position, const int goal) const
virtual std::string	GetModuleName ()
Public Member Functions inherited from Nektar::FieldUtils::ProcessModule
	ProcessModule ()
	ProcessModule (FieldSharedPtr p_f)
Public Member Functions inherited from Nektar::FieldUtils::Module
FIELD_UTILS_EXPORT	Module (FieldSharedPtr p_f)
FIELD_UTILS_EXPORT void	RegisterConfig (string key, string value)
	Register a configuration option with a module. More...
FIELD_UTILS_EXPORT void	PrintConfig ()
	Print out all configuration options for a module. More...
FIELD_UTILS_EXPORT void	SetDefaults ()
	Sets default configuration options for those which have not been set. More...
FIELD_UTILS_EXPORT bool	GetRequireEquiSpaced (void)
FIELD_UTILS_EXPORT void	SetRequireEquiSpaced (bool pVal)
FIELD_UTILS_EXPORT void	EvaluateTriFieldAtEquiSpacedPts (LocalRegions::ExpansionSharedPtr &exp, const Array< OneD, const NekDouble > &infield, Array< OneD, NekDouble > &outfield)

Static Public Member Functions
static boost::shared_ptr< Module >	create (FieldSharedPtr f)
	Creates an instance of this class. More...

Static Public Attributes
static ModuleKey	className

Private Attributes
FieldSharedPtr	m_fromField

Additional Inherited Members
Protected Member Functions inherited from Nektar::FieldUtils::Module
	Module ()
Protected Attributes inherited from Nektar::FieldUtils::Module
FieldSharedPtr	m_f
	Field object. More...
map< string, ConfigOption >	m_config
	List of configuration values. More...
bool	m_requireEquiSpaced

Detailed Description

This processing module interpolates one field to another.

Definition at line 49 of file ProcessInterpField.h.

Constructor & Destructor Documentation

Nektar::FieldUtils::ProcessInterpField::ProcessInterpField

(

FieldSharedPtr

f

)

Definition at line 58 of file ProcessInterpField.cpp.

References Nektar::FieldUtils::Module::m_config.

                                                       : ProcessModule(f)
{

    m_config["fromxml"] = ConfigOption(
        false, "NotSet", "Xml file form which to interpolate field");
    m_config["fromfld"] = ConfigOption(
        false, "NotSet", "Fld file form which to interpolate field");

    m_config["clamptolowervalue"] =
        ConfigOption(false, "-10000000", "Lower bound for interpolation value");
    m_config["clamptouppervalue"] =
        ConfigOption(false, "10000000", "Upper bound for interpolation value");
    m_config["defaultvalue"] =
        ConfigOption(false, "0", "Default value if point is outside domain");
}

Nektar::FieldUtils::ProcessInterpField::~ProcessInterpField ( )

virtual

Definition at line 74 of file ProcessInterpField.cpp.

{
}

Member Function Documentation

static boost::shared_ptr<Module> Nektar::FieldUtils::ProcessInterpField::create ( FieldSharedPtr  f )

inlinestatic

Creates an instance of this class.

Definition at line 53 of file ProcessInterpField.h.

References Nektar::MemoryManager< DataType >::AllocateSharedPtr().

    {
        return MemoryManager<ProcessInterpField>::AllocateSharedPtr(f);
    }

virtual std::string Nektar::FieldUtils::ProcessInterpField::GetModuleName ( )

inlinevirtual

Implements Nektar::FieldUtils::Module.

Definition at line 67 of file ProcessInterpField.h.

    {
        return "ProcessInterpField";
    }

void Nektar::FieldUtils::ProcessInterpField::PrintProgressbar	(	const int	position,
		const int	goal
	)		const

Definition at line 275 of file ProcessInterpField.cpp.

References Nektar::LibUtilities::PrintProgressbar().

Referenced by Process().

{
    LibUtilities::PrintProgressbar(position, goal, "Interpolating");
}

void Nektar::FieldUtils::ProcessInterpField::Process ( po::variables_map &  vm )

virtual

Write mesh to output file.

Implements Nektar::FieldUtils::Module.

Definition at line 78 of file ProcessInterpField.cpp.

References Nektar::MemoryManager< DataType >::AllocateSharedPtr(), ASSERTL0, Nektar::LibUtilities::SessionReader::CreateInstance(), Nektar::ParseUtils::GenerateOrderedStringVector(), Nektar::FieldUtils::Interpolator::Interpolate(), Nektar::FieldUtils::Module::m_config, Nektar::FieldUtils::Module::m_f, m_fromField, npts, Nektar::LibUtilities::NullFieldMetaDataMap, Nektar::NullNekDouble1DArray, PrintProgressbar(), Nektar::SpatialDomains::MeshGraph::Read(), Nektar::FieldUtils::Interpolator::SetProgressCallback(), Vmath::Vmax(), and Vmath::Vmin().

{
    if (m_f->m_verbose)
    {
        if (m_f->m_comm->TreatAsRankZero())
        {
            cout << "ProcessInterpField: Interpolating field..." << endl;
        }
    }

    m_fromField = boost::shared_ptr<Field>(new Field());

    std::vector<std::string> files;

    // set up session file for from field
    ParseUtils::GenerateOrderedStringVector(m_config["fromxml"].as<string>().c_str(), files);
    m_fromField->m_session =
        LibUtilities::SessionReader::CreateInstance(0, 0, files);

    // Set up range based on min and max of local parallel partition
    SpatialDomains::DomainRangeShPtr rng =
        MemoryManager<SpatialDomains::DomainRange>::AllocateSharedPtr();

    int coordim = m_f->m_exp[0]->GetCoordim(0);
    int npts    = m_f->m_exp[0]->GetTotPoints();
    Array<OneD, Array<OneD, NekDouble> > coords(3);

    for (int i = 0; i < coordim; ++i)
    {
        coords[i] = Array<OneD, NekDouble>(npts);
    }

    for (int i = coordim; i < 3; ++i)
    {
        coords[i] = NullNekDouble1DArray;
    }

    m_f->m_exp[0]->GetCoords(coords[0], coords[1], coords[2]);

    rng->m_checkShape = false;
    switch (coordim)
    {
        case 3:
            rng->m_doZrange = true;
            rng->m_zmin     = Vmath::Vmin(npts, coords[2], 1);
            rng->m_zmax     = Vmath::Vmax(npts, coords[2], 1);
        case 2:
            rng->m_doYrange = true;
            rng->m_ymin     = Vmath::Vmin(npts, coords[1], 1);
            rng->m_ymax     = Vmath::Vmax(npts, coords[1], 1);
        case 1:
            rng->m_doXrange = true;
            rng->m_xmin     = Vmath::Vmin(npts, coords[0], 1);
            rng->m_xmax     = Vmath::Vmax(npts, coords[0], 1);
            break;
        default:
            ASSERTL0(false, "too many values specfied in range");
    }

    // setup rng parameters.
    m_fromField->m_graph =
        SpatialDomains::MeshGraph::Read(m_fromField->m_session, rng);

    // Read in local from field partitions
    const SpatialDomains::ExpansionMap &expansions =
        m_fromField->m_graph->GetExpansions();

    // check for case where no elements are specified on this
    // parallel partition
    if (!expansions.size())
    {
        return;
    }

    Array<OneD, int> ElementGIDs(expansions.size());
    SpatialDomains::ExpansionMap::const_iterator expIt;

    int i = 0;
    for (expIt = expansions.begin(); expIt != expansions.end(); ++expIt)
    {
        ElementGIDs[i++] = expIt->second->m_geomShPtr->GetGlobalID();
    }

    string fromfld = m_config["fromfld"].as<string>();
    m_f->FieldIOForFile(fromfld)->Import(
        fromfld, m_fromField->m_fielddef, m_fromField->m_data,
        LibUtilities::NullFieldMetaDataMap, ElementGIDs);

    int NumHomogeneousDir = m_fromField->m_fielddef[0]->m_numHomogeneousDir;

    //----------------------------------------------
    // Set up Expansion information to use mode order from field
    m_fromField->m_graph->SetExpansions(m_fromField->m_fielddef);

    int nfields = m_fromField->m_fielddef[0]->m_fields.size();

    m_fromField->m_exp.resize(nfields);
    m_fromField->m_exp[0] =
        m_fromField->SetUpFirstExpList(NumHomogeneousDir, true);

    m_f->m_exp.resize(nfields);

    // declare auxiliary fields.
    for (i = 1; i < nfields; ++i)
    {
        m_f->m_exp[i]         = m_f->AppendExpList(NumHomogeneousDir);
        m_fromField->m_exp[i] = m_fromField->AppendExpList(NumHomogeneousDir);
    }

    // load field into expansion in fromfield.
    for (int j = 0; j < nfields; ++j)
    {
        for (i = 0; i < m_fromField->m_fielddef.size(); i++)
        {
            m_fromField->m_exp[j]->ExtractDataToCoeffs(
                m_fromField->m_fielddef[i], m_fromField->m_data[i],
                m_fromField->m_fielddef[0]->m_fields[j],
                m_fromField->m_exp[j]->UpdateCoeffs());
        }
        m_fromField->m_exp[j]->BwdTrans(m_fromField->m_exp[j]->GetCoeffs(),
                                        m_fromField->m_exp[j]->UpdatePhys());
    }

    int nq1 = m_f->m_exp[0]->GetTotPoints();

    Array<OneD, NekDouble> x1(nq1);
    Array<OneD, NekDouble> y1(nq1);
    Array<OneD, NekDouble> z1(nq1);

    if (coordim == 2)
    {
        m_f->m_exp[0]->GetCoords(x1, y1);
    }
    else if (coordim == 3)
    {
        m_f->m_exp[0]->GetCoords(x1, y1, z1);
    }

    NekDouble clamp_low = m_config["clamptolowervalue"].as<NekDouble>();
    NekDouble clamp_up  = m_config["clamptouppervalue"].as<NekDouble>();
    NekDouble def_value = m_config["defaultvalue"].as<NekDouble>();

    for (int i = 0; i < nfields; i++)
    {
        for (int j = 0; j < nq1; ++j)
        {
            m_f->m_exp[i]->UpdatePhys()[j] = def_value;
        }
    }

    Interpolator interp;
    if (m_f->m_comm->GetRank() == 0)
    {
        interp.SetProgressCallback(&ProcessInterpField::PrintProgressbar, this);
    }
    interp.Interpolate(m_fromField->m_exp, m_f->m_exp);
    if (m_f->m_comm->GetRank() == 0)
    {
        cout << endl;
    }

    for (int i = 0; i < nfields; ++i)
    {
        for (int j = 0; j < nq1; ++j)
        {
            if (m_f->m_exp[i]->GetPhys()[j] > clamp_up)
            {
                m_f->m_exp[i]->UpdatePhys()[j] = clamp_up;
            }
            else if (m_f->m_exp[i]->GetPhys()[j] < clamp_low)
            {
                m_f->m_exp[i]->UpdatePhys()[j] = clamp_low;
            }
        }
    }

    // put field into field data for output
    std::vector<LibUtilities::FieldDefinitionsSharedPtr> FieldDef =
        m_f->m_exp[0]->GetFieldDefinitions();
    std::vector<std::vector<NekDouble> > FieldData(FieldDef.size());

    for (int j = 0; j < nfields; ++j)
    {
        m_f->m_exp[j]->FwdTrans(m_f->m_exp[j]->GetPhys(),
                                m_f->m_exp[j]->UpdateCoeffs());
        for (i = 0; i < FieldDef.size(); ++i)
        {
            FieldDef[i]->m_fields.push_back(
                m_fromField->m_fielddef[0]->m_fields[j]);
            m_f->m_exp[j]->AppendFieldData(FieldDef[i], FieldData[i]);
        }
    }

    m_f->m_fielddef = FieldDef;
    m_f->m_data     = FieldData;
}

Member Data Documentation

ModuleKey Nektar::FieldUtils::ProcessInterpField::className

static

Initial value:

=
    GetModuleFactory().RegisterCreatorFunction(
        ModuleKey(eProcessModule, "interpfield"),
        ProcessInterpField::create,
        "Interpolates one field to another, requires fromxml, "
        "fromfld to be defined")

Definition at line 57 of file ProcessInterpField.h.

FieldSharedPtr Nektar::FieldUtils::ProcessInterpField::m_fromField

private

Definition at line 73 of file ProcessInterpField.h.

Referenced by Process().