Nektar::FieldUtils::ProcessInterpField Class Reference

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

#include <ProcessInterpField.h>

Inheritance 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 ()
virtual std::string	GetModuleDescription ()
virtual ModulePriority	GetModulePriority ()
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)
virtual	~Module ()=default
const ConfigOption &	GetConfigOption (const std::string &key) const
FIELD_UTILS_EXPORT void	RegisterConfig (std::string key, std::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 void	AddFile (std::string fileType, std::string fileName)
FIELD_UTILS_EXPORT void	EvaluateTriFieldAtEquiSpacedPts (LocalRegions::ExpansionSharedPtr &exp, const Array< OneD, const NekDouble > &infield, Array< OneD, NekDouble > &outfield)

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

Static Public Attributes
static ModuleKey	className

Additional Inherited Members
Public Attributes inherited from Nektar::FieldUtils::Module
FieldSharedPtr	m_f
	Field object. More...
Protected Member Functions inherited from Nektar::FieldUtils::Module
	Module ()
Protected Attributes inherited from Nektar::FieldUtils::Module
std::map< std::string, ConfigOption >	m_config
	List of configuration values. More...
std::set< std::string >	m_allowedFiles
	List of allowed file formats. More...

Detailed Description

This processing module interpolates one field to another.

Definition at line 48 of file ProcessInterpField.h.

Constructor & Destructor Documentation

ProcessInterpField()

Nektar::FieldUtils::ProcessInterpField::ProcessInterpField

(

FieldSharedPtr

f

)

Definition at line 63 of file ProcessInterpField.cpp.

                                                       : ProcessModule(f)
{
 
    m_config["fromxml"] = ConfigOption(
        false, "NotSet", "Xml file from which to interpolate field");
    m_config["fromfld"] = ConfigOption(
        false, "NotSet", "Fld file from 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");
    m_config["realmodetoimag"] =
        ConfigOption(false, "NotSet", "Take fields as sin mode");
}

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

~ProcessInterpField()

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

virtual

Definition at line 81 of file ProcessInterpField.cpp.

{
}

Member Function Documentation

create()

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

inlinestatic

Creates an instance of this class.

Definition at line 52 of file ProcessInterpField.h.

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

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

GetModuleDescription()

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

inlinevirtual

Reimplemented from Nektar::FieldUtils::Module.

Definition at line 71 of file ProcessInterpField.h.

    {
        return "Interpolating field";
    }

GetModuleName()

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

inlinevirtual

Implements Nektar::FieldUtils::Module.

Definition at line 66 of file ProcessInterpField.h.

    {
        return "ProcessInterpField";
    }

GetModulePriority()

virtual ModulePriority Nektar::FieldUtils::ProcessInterpField::GetModulePriority ( )

inlinevirtual

Implements Nektar::FieldUtils::Module.

Definition at line 76 of file ProcessInterpField.h.

    {
        return eFillExp;
    }

References Nektar::FieldUtils::eFillExp.

PrintProgressbar()

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

Definition at line 290 of file ProcessInterpField.cpp.

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

References Nektar::LibUtilities::PrintProgressbar().

Referenced by Process().

Process()

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

virtual

Write mesh to output file.

Implements Nektar::FieldUtils::Module.

Definition at line 85 of file ProcessInterpField.cpp.

{
    m_f->SetUpExp(vm);
 
    FieldSharedPtr fromField = std::shared_ptr<Field>(new Field());
 
    std::vector<std::string> files;
 
    // set up session file for from field
    char *argv[] = {const_cast<char *>("FieldConvert"), nullptr};
    ParseUtils::GenerateVector(m_config["fromxml"].as<string>(), files);
    fromField->m_session = LibUtilities::SessionReader::CreateInstance(
        1, argv, files,
        LibUtilities::GetCommFactory().CreateInstance("Serial", 0, 0));
 
    // Set up range based on min and max of local parallel partition
    LibUtilities::DomainRangeShPtr rng =
        MemoryManager<LibUtilities::DomainRange>::AllocateSharedPtr();
 
    int numHomoDir = m_f->m_numHomogeneousDir;
    int coordim    = m_f->m_exp[0]->GetCoordim(0) + numHomoDir;
    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);
            /* Falls through. */
        case 2:
            rng->m_doYrange = true;
            rng->m_ymin     = Vmath::Vmin(npts, coords[1], 1);
            rng->m_ymax     = Vmath::Vmax(npts, coords[1], 1);
            /* Falls through. */
        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:
            NEKERROR(ErrorUtil::efatal, "coordim should be <= 3");
    }
 
    // setup rng parameters.
    fromField->m_graph =
        SpatialDomains::MeshGraph::Read(fromField->m_session, rng);
 
    // Read in local from field partitions
    const SpatialDomains::ExpansionInfoMap &expansions =
        fromField->m_graph->GetExpansionInfo();
 
    // check for case where no elements are specified on this
    // parallel partition
    if (!expansions.size())
    {
        return;
    }
 
    Array<OneD, int> ElementGIDs(expansions.size());
 
    int i = 0;
    for (auto &expIt : expansions)
    {
        ElementGIDs[i++] = expIt.second->m_geomShPtr->GetGlobalID();
    }
 
    string fromfld = m_config["fromfld"].as<string>();
    m_f->FieldIOForFile(fromfld)->Import(
        fromfld, fromField->m_fielddef, fromField->m_data,
        LibUtilities::NullFieldMetaDataMap, ElementGIDs);
 
    int fromNumHomoDir = fromField->m_fielddef[0]->m_numHomogeneousDir;
    for (i = 0; i < fromField->m_fielddef.size(); ++i)
    {
        int d1 = fromField->m_fielddef[i]->m_basis.size();
        d1 -= 1;
        if (d1 >= 0 && (fromField->m_fielddef[i]->m_basis[d1] ==
                            LibUtilities::eFourierHalfModeRe ||
                        fromField->m_fielddef[i]->m_basis[d1] ==
                            LibUtilities::eFourierHalfModeIm))
        {
            fromField->m_fielddef[i]->m_homogeneousZIDs[0] += 2;
            fromField->m_fielddef[i]->m_numModes[d1] = 4;
            fromField->m_fielddef[i]->m_basis[d1]    = LibUtilities::eFourier;
        }
    }
 
    //----------------------------------------------
    // Set up Expansion information to use mode order from field
    fromField->m_graph->SetExpansionInfo(fromField->m_fielddef);
 
    int nfields = fromField->m_fielddef[0]->m_fields.size();
 
    fromField->m_exp.resize(nfields);
    fromField->m_exp[0] = fromField->SetUpFirstExpList(fromNumHomoDir, true);
 
    m_f->m_exp.resize(nfields);
 
    // declare auxiliary fields.
    for (i = 1; i < nfields; ++i)
    {
        m_f->m_exp[i]       = m_f->AppendExpList(numHomoDir);
        fromField->m_exp[i] = fromField->AppendExpList(fromNumHomoDir);
    }
 
    // load field into expansion in fromfield.
    set<int> sinmode;
    if (m_config["realmodetoimag"].as<string>().compare("NotSet"))
    {
        vector<int> value;
        ASSERTL0(ParseUtils::GenerateVector(
                     m_config["realmodetoimag"].as<string>(), value),
                 "Failed to interpret realmodetoimag string");
        for (int j : value)
        {
            sinmode.insert(j);
        }
    }
    for (int j = 0; j < nfields; ++j)
    {
        for (i = 0; i < fromField->m_fielddef.size(); i++)
        {
            fromField->m_exp[j]->ExtractDataToCoeffs(
                fromField->m_fielddef[i], fromField->m_data[i],
                fromField->m_fielddef[0]->m_fields[j],
                fromField->m_exp[j]->UpdateCoeffs());
        }
        if (fromNumHomoDir == 1)
        {
            fromField->m_exp[j]->SetWaveSpace(true);
            if (sinmode.count(j))
            {
                int Ncoeff = fromField->m_exp[j]->GetPlane(2)->GetNcoeffs();
                Vmath::Smul(
                    Ncoeff, -1., fromField->m_exp[j]->GetPlane(2)->GetCoeffs(),
                    1, fromField->m_exp[j]->GetPlane(3)->UpdateCoeffs(), 1);
                Vmath::Zero(Ncoeff,
                            fromField->m_exp[j]->GetPlane(2)->UpdateCoeffs(),
                            1);
            }
        }
        fromField->m_exp[j]->BwdTrans(fromField->m_exp[j]->GetCoeffs(),
                                      fromField->m_exp[j]->UpdatePhys());
    }
 
    int nq1 = m_f->m_exp[0]->GetTotPoints();
 
    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_verbose && m_f->m_comm->TreatAsRankZero())
    {
        interp.SetProgressCallback(&ProcessInterpField::PrintProgressbar, this);
    }
    interp.Interpolate(fromField->m_exp, m_f->m_exp);
    if (m_f->m_verbose && m_f->m_comm->TreatAsRankZero())
    {
        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;
            }
        }
        m_f->m_exp[i]->FwdTransLocalElmt(m_f->m_exp[i]->GetPhys(),
                                         m_f->m_exp[i]->UpdateCoeffs());
    }
    // save field names
    m_f->m_variables = fromField->m_fielddef[0]->m_fields;
}

References Nektar::MemoryManager< DataType >::AllocateSharedPtr(), ASSERTL0, Nektar::LibUtilities::SessionReader::CreateInstance(), Nektar::ErrorUtil::efatal, Nektar::LibUtilities::eFourier, Nektar::LibUtilities::eFourierHalfModeIm, Nektar::LibUtilities::eFourierHalfModeRe, Nektar::ParseUtils::GenerateVector(), Nektar::LibUtilities::GetCommFactory(), Nektar::FieldUtils::Interpolator::Interpolate(), Nektar::FieldUtils::Module::m_config, Nektar::FieldUtils::Module::m_f, NEKERROR, Nektar::LibUtilities::NullFieldMetaDataMap, Nektar::NullNekDouble1DArray, PrintProgressbar(), Nektar::SpatialDomains::MeshGraph::Read(), Nektar::LibUtilities::Interpolator::SetProgressCallback(), Vmath::Smul(), Vmath::Vmax(), Vmath::Vmin(), and Vmath::Zero().

Member Data Documentation

className

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 56 of file ProcessInterpField.h.