Nektar::FieldUtils::ProcessPointDataToFld Class Reference

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

#include <ProcessPointDataToFld.h>

Inheritance diagram for Nektar::FieldUtils::ProcessPointDataToFld:

Collaboration diagram for Nektar::FieldUtils::ProcessPointDataToFld:

Public Member Functions
	ProcessPointDataToFld (FieldSharedPtr f)
virtual	~ProcessPointDataToFld ()
virtual void	Process (po::variables_map &vm)
	Write mesh to output file. More...
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

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 51 of file ProcessPointDataToFld.h.

Constructor & Destructor Documentation

Nektar::FieldUtils::ProcessPointDataToFld::ProcessPointDataToFld

(

FieldSharedPtr

f

)

Definition at line 59 of file ProcessPointDataToFld.cpp.

References Nektar::FieldUtils::Module::m_config, and Nektar::FieldUtils::Module::m_requireEquiSpaced.

    : ProcessModule(f)
{
    m_requireEquiSpaced = true;

    m_config["setnantovalue"] = ConfigOption(
        false, "NotSet", "reset any nan value to prescribed value");

    if ((f->m_inputfiles.count("pts") == 0))
    {
        cout << endl
             << "A pts input file must be specified for the boundary "
                "extraction module"
             << endl;

        cout
            << "Usage: Fieldconvert -m pointdatatofld file.pts file.xml out.fld"
            << endl;
        exit(3);
    }

    if ((f->m_inputfiles.count("xml") == 0) &&
        (f->m_inputfiles.count("xml.gz") == 0))
    {
        cout << endl
             << "An xml or xml.gz input file must be specified for the "
                "boundary extraction module"
             << endl;
        cout
            << "Usage: Fieldconvert -m pointdatatofld file.pts file.xml out.fld"
            << endl;
        exit(3);
    }
}

Nektar::FieldUtils::ProcessPointDataToFld::~ProcessPointDataToFld ( )

virtual

Definition at line 94 of file ProcessPointDataToFld.cpp.

{
}

Member Function Documentation

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

inlinestatic

Creates an instance of this class.

Definition at line 55 of file ProcessPointDataToFld.h.

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

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

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

inlinevirtual

Implements Nektar::FieldUtils::Module.

Definition at line 67 of file ProcessPointDataToFld.h.

    {
        return "ProcessPointDataToFld";
    }

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

virtual

Write mesh to output file.

Implements Nektar::FieldUtils::Module.

Definition at line 98 of file ProcessPointDataToFld.cpp.

References ASSERTL0, Nektar::LibUtilities::eIsEquiSpacedData, Nektar::FieldUtils::Module::m_config, Nektar::FieldUtils::Module::m_f, Nektar::LibUtilities::NullPtsField, Vmath::Vcopy(), and WARNINGL0.

{
    if (m_f->m_verbose)
    {
        if (m_f->m_comm->TreatAsRankZero())
        {
            cout << "ProcessPointDataToFld: projecting data to expansion..."
                 << endl;
        }
    }

    int i, j;
    bool setnantovalue = false;
    NekDouble defvalue=0.0;

    if (!boost::iequals(m_config["setnantovalue"].as<string>(), "NotSet"))
    {
        setnantovalue = true;
        defvalue      = m_config["setnantovalue"].as<NekDouble>();
    }

    // Check for command line point specification if no .pts file specified
    ASSERTL0(m_f->m_fieldPts != LibUtilities::NullPtsField,
             "No input points found");

    int nFields = m_f->m_fieldPts->GetNFields();
    ASSERTL0(nFields > 0, "No field values provided in input");

    int dim = m_f->m_fieldPts->GetDim();

    // assume one field is already defined from input file.
    m_f->m_exp.resize(nFields);
    for (i = 1; i < nFields; ++i)
    {
        m_f->m_exp[i] = m_f->AppendExpList(0);
    }

    Array<OneD, Array<OneD, NekDouble> > pts;
    m_f->m_fieldPts->GetPts(pts);

    // set any nan values to default value if requested
    if (setnantovalue)
    {
        for (int i = 0; i < pts[0].num_elements(); ++i)
        {
            for (int j = 0; j < nFields; ++j)
            {
                if ((boost::math::isnan)(pts[j + dim][i]))
                {
                    pts[j + dim][i] = defvalue;
                }
            }
        }
    }

    if (m_f->m_fieldPts->m_ptsInfo.count(LibUtilities::eIsEquiSpacedData) != 0)
    {
        int totcoeffs = m_f->m_exp[0]->GetNcoeffs();

        ASSERTL0(pts[0].num_elements() != totcoeffs,
                 "length of points in .pts file is different "
                 "to the number of coefficients in expansion ");

        for (int i = 0; i < nFields; ++i)
        {
            Array<OneD, NekDouble> coeffs = m_f->m_exp[i]->UpdateCoeffs(), tmp;
            int cnt = 0;
            for (int e = 0; e < m_f->m_exp[0]->GetNumElmts(); ++e)
            {
                int ncoeffs = m_f->m_exp[i]->GetExp(e)->GetNcoeffs();
                int offset  = m_f->m_exp[i]->GetCoeff_Offset(e);
                Vmath::Vcopy(ncoeffs, &pts[i + dim][cnt], 1, &coeffs[offset],
                             1);

                m_f->m_exp[i]->GetExp(e)->EquiSpacedToCoeffs(
                    coeffs + offset, tmp = coeffs + offset);
                cnt += ncoeffs;
            }
        }
    }
    else
    {
        int totpoints = m_f->m_exp[0]->GetTotPoints();
        Array<OneD, Array<OneD, NekDouble> > coords(3);

        coords[0] = Array<OneD, NekDouble>(totpoints);
        coords[1] = Array<OneD, NekDouble>(totpoints);
        coords[2] = Array<OneD, NekDouble>(totpoints);

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

        if (pts[0].num_elements() != totpoints)
        {
            WARNINGL0(false, "length of points in .pts file is different to "
                             "the number of quadrature points in xml file");
            totpoints = min(totpoints, (int)pts[0].num_elements());
        }

        int mismatch = 0;
        for (i = 0; i < totpoints; ++i)
        {
            for (j = 0; j < dim; ++j)
            {
                if (fabs(coords[j][i] - pts[j][i]) > 1e-4)
                {
                    string outstring =
                        "Coordinates do not match within 1e-4: " +
                        boost::lexical_cast<string>(coords[j][i]) + " versus " +
                        boost::lexical_cast<string>(pts[j][i]) + " diff " +
                        boost::lexical_cast<string>(
                            fabs(coords[j][i] - pts[j][i]));
                    ;
                    WARNINGL0(false, outstring);
                    mismatch += 1;
                }
            }

            for (j = 0; j < nFields; ++j)
            {
                m_f->m_exp[j]->SetPhys(i, pts[j + dim][i]);
            }
        }

        if (m_f->m_session->GetComm()->GetRank() == 0)
        {
            cout << endl;
        }

        // forward transform fields
        for (i = 0; i < nFields; ++i)
        {
            m_f->m_exp[i]->FwdTrans_IterPerExp(m_f->m_exp[i]->GetPhys(),
                                               m_f->m_exp[i]->UpdateCoeffs());
        }
    }

    // set up output fld file.
    std::vector<LibUtilities::FieldDefinitionsSharedPtr> FieldDef =
        m_f->m_exp[0]->GetFieldDefinitions();
    std::vector<std::vector<NekDouble> > FieldData(FieldDef.size());

    for (j = 0; j < nFields; ++j)
    {
        for (i = 0; i < FieldDef.size(); ++i)
        {
            FieldDef[i]->m_fields.push_back(m_f->m_fieldPts->GetFieldName(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::ProcessPointDataToFld::className

static

Initial value:

=
    GetModuleFactory().RegisterCreatorFunction(
        ModuleKey(eProcessModule, "pointdatatofld"),
        ProcessPointDataToFld::create,
        "Given discrete data at quadrature points project them onto an "
        "expansion"
        "basis and output fld file. Requires .pts .xml and .fld files.")

Definition at line 59 of file ProcessPointDataToFld.h.