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FieldToField.cpp File Reference
#include <cstdio>
#include <cstdlib>
#include <iomanip>
#include <LibUtilities/BasicUtils/SessionReader.h>
#include <LibUtilities/BasicUtils/SharedArray.hpp>
#include <MultiRegions/ExpList.h>
#include <MultiRegions/ContField1D.h>
#include <MultiRegions/ContField2D.h>
#include <MultiRegions/ContField3D.h>
#include <MultiRegions/ContField3DHomogeneous1D.h>
#include <tinyxml.h>
#include <boost/math/special_functions/fpclassify.hpp>
Include dependency graph for FieldToField.cpp:

Go to the source code of this file.

Functions

int main (int argc, char *argv[])
void SetFields (SpatialDomains::MeshGraphSharedPtr &mesh, vector< LibUtilities::FieldDefinitionsSharedPtr > fielddef, LibUtilities::SessionReaderSharedPtr &session, Array< OneD, MultiRegions::ExpListSharedPtr > &Exp, int nvariables, const vector< std::string > &variables, bool homogeneous)
void InterpolateField (Array< OneD, MultiRegions::ExpListSharedPtr > &field0, Array< OneD, MultiRegions::ExpListSharedPtr > &field1, Array< OneD, NekDouble > x, Array< OneD, NekDouble > y, Array< OneD, NekDouble > z, NekDouble clamp_low, NekDouble clamp_up)
void InterpolateFieldHomo (MultiRegions::ExpListSharedPtr field0, Array< OneD, NekDouble > x1, Array< OneD, NekDouble > y1, MultiRegions::ExpListSharedPtr field1)
bool Checkbndmeshes2D (Array< OneD, NekDouble > x0, Array< OneD, NekDouble > y0, Array< OneD, NekDouble > x1, Array< OneD, NekDouble > y1)
bool Checkbndmeshes3D (Array< OneD, NekDouble > x0, Array< OneD, NekDouble > y0, Array< OneD, NekDouble > z0, Array< OneD, NekDouble > x1, Array< OneD, NekDouble > y1, Array< OneD, NekDouble > z1)
void Writefield (LibUtilities::SessionReaderSharedPtr vSession, const std::vector< std::string > &variables, string fieldfile, SpatialDomains::MeshGraphSharedPtr &graph, Array< OneD, MultiRegions::ExpListSharedPtr > &outfield)

Function Documentation

bool Checkbndmeshes2D ( Array< OneD, NekDouble >  x0,
Array< OneD, NekDouble >  y0,
Array< OneD, NekDouble >  x1,
Array< OneD, NekDouble >  y1 
)

Definition at line 555 of file FieldToField.cpp.

References Vmath::Vmax(), and Vmath::Vmin().

Referenced by main().

{
NekDouble x0min, x0max, y0min, y0max;
NekDouble x1min, x1max, y1min, y1max;
NekDouble tol = 0.0000001;
NekDouble tol1 = 0.00001;
x0min = Vmath::Vmin(x0.num_elements(), x0, 1);
x0max = Vmath::Vmax(x0.num_elements(), x0, 1);
y0min = Vmath::Vmin(y0.num_elements(), y0, 1);
y0max = Vmath::Vmax(y0.num_elements(), y0, 1);
x1min = Vmath::Vmin(x1.num_elements(), x1, 1);
x1max = Vmath::Vmax(x1.num_elements(), x1, 1);
y1min = Vmath::Vmin(y1.num_elements(), y1, 1);
y1max = Vmath::Vmax(y1.num_elements(), y1, 1);
if (abs(x0min-x1min) < tol1 &&
abs(x0max-x1max) < tol1 &&
abs(y0min-y1min) < tol1 &&
abs(y0max-y1max) < tol1)
{
if (abs(x0min-x1min) > tol ||
abs(x0max-x1max) > tol ||
abs(y0min-y1min) > tol ||
abs(y0max-y1max) > tol)
{
cout<<"Warning: mesh boundary points differ more than 10^-7"<<endl;
}
return true;
}
else
{
return false;
}
}
bool Checkbndmeshes3D ( Array< OneD, NekDouble >  x0,
Array< OneD, NekDouble >  y0,
Array< OneD, NekDouble >  z0,
Array< OneD, NekDouble >  x1,
Array< OneD, NekDouble >  y1,
Array< OneD, NekDouble >  z1 
)

Definition at line 597 of file FieldToField.cpp.

References Vmath::Vmax(), and Vmath::Vmin().

Referenced by main().

{
NekDouble x0min, x0max, y0min, y0max, z0min, z0max;
NekDouble x1min, x1max, y1min, y1max, z1min, z1max;
NekDouble tol = 0.0000001;
NekDouble tol1 = 0.00001;
x0min = Vmath::Vmin(x0.num_elements(), x0, 1);
x0max = Vmath::Vmax(x0.num_elements(), x0, 1);
y0min = Vmath::Vmin(y0.num_elements(), y0, 1);
y0max = Vmath::Vmax(y0.num_elements(), y0, 1);
z0min = Vmath::Vmin(z0.num_elements(), z0, 1);
z0max = Vmath::Vmax(z0.num_elements(), z0, 1);
x1min = Vmath::Vmin(x1.num_elements(), x1, 1);
x1max = Vmath::Vmax(x1.num_elements(), x1, 1);
y1min = Vmath::Vmin(y1.num_elements(), y1, 1);
y1max = Vmath::Vmax(y1.num_elements(), y1, 1);
z1min = Vmath::Vmin(z1.num_elements(), z1, 1);
z1max = Vmath::Vmax(z1.num_elements(), z1, 1);
if (abs(x0min-x1min) < tol1 &&
abs(x0max-x1max) < tol1 &&
abs(y0min-y1min) < tol1 &&
abs(y0max-y1max) < tol1 &&
abs(z0min-z1min) < tol1 &&
abs(z0max-z1max) < tol1)
{
if (abs(x0min-x1min) > tol ||
abs(x0max-x1max) > tol ||
abs(y0min-y1min) > tol ||
abs(y0max-y1max) > tol ||
abs(z0min-z1min) > tol ||
abs(z0max-z1max) > tol)
{
cout<<"Warning: mesh boundary points differ more than 10^-7"<<endl;
}
return true;
}
else
{
return false;
}
}
void InterpolateField ( Array< OneD, MultiRegions::ExpListSharedPtr > &  field0,
Array< OneD, MultiRegions::ExpListSharedPtr > &  field1,
Array< OneD, NekDouble >  x,
Array< OneD, NekDouble >  y,
Array< OneD, NekDouble >  z,
NekDouble  clamp_low,
NekDouble  clamp_up 
)

Definition at line 435 of file FieldToField.cpp.

References ASSERTL0, and Nektar::NullNekDouble1DArray.

Referenced by main().

{
int expdim = (z == NullNekDouble1DArray)? 2: 3;
Array<OneD, NekDouble> coords(expdim), Lcoords(expdim);
int nq1 = field1[0]->GetTotPoints();
int elmtid, offset;
int r, f;
static int intpts = 0;
ASSERTL0(field0.num_elements() == field1.num_elements(),
"Input field dimension must be same as output dimension");
for (r = 0; r < nq1; r++)
{
coords[0] = x[r];
coords[1] = y[r];
if (expdim == 3)
{
coords[2] = z[r];
}
// Obtain Element and LocalCoordinate to interpolate
elmtid = field0[0]->GetExpIndex(coords, Lcoords, 1e-3);
offset = field0[0]->GetPhys_Offset(field0[0]->
GetOffset_Elmt_Id(elmtid));
for (f = 0; f < field1.num_elements(); ++f)
{
NekDouble value;
value = field0[f]->GetExp(elmtid)->
StdPhysEvaluate(Lcoords, field0[f]->GetPhys() +offset);
if ((boost::math::isnan)(value))
{
ASSERTL0(false, "new value is not a number");
}
else
{
value = (value > clamp_up)? clamp_up :
((value < clamp_low)? clamp_low :
value);
field1[f]->UpdatePhys()[r] = value;
}
}
if (intpts%1000 == 0)
{
cout <<"." << flush;
}
intpts ++;
}
}
void InterpolateFieldHomo ( MultiRegions::ExpListSharedPtr  field0,
Array< OneD, NekDouble >  x1,
Array< OneD, NekDouble >  y1,
MultiRegions::ExpListSharedPtr  field1 
)

Definition at line 500 of file FieldToField.cpp.

Referenced by main().

{
Array<OneD, NekDouble> coords(2);
int nq1 = field1->GetPlane(1)->GetTotPoints();
int elmtid, offset;
//plane 0
for (int r = 0; r < nq1; r++)
{
coords[0] = x1[r];
coords[1] = y1[r];
elmtid = field0->GetPlane(0)->GetExpIndex(coords, 1e-3);
offset = field0->GetPlane(0)->GetPhys_Offset(elmtid);
field1->GetPlane(0)->UpdatePhys()[r] = field0->GetPlane(0)->
GetExp(elmtid)->PhysEvaluate(
coords,
field0->GetPlane(0)->GetPhys() +offset);
if ((boost::math::isnan)(field1->GetPlane(0)->UpdatePhys()[r]))
{
//ASSERTL0(abs(field1->UpdatePhys()[r])<10000000000,
// "interp failed");
}
}
// Plane1
for (int r = 0; r < nq1; r++)
{
coords[0] = x1[r];
coords[1] = y1[r];
elmtid = field0->GetPlane(1)->GetExpIndex(coords, 1e-3);
offset = field0->GetPlane(1)->GetPhys_Offset(elmtid);
field1->GetPlane(1)->UpdatePhys()[r] = field0->GetPlane(1)->
GetExp(elmtid)->PhysEvaluate(
coords,
field0->GetPlane(1)->GetPhys() +offset);
if((boost::math::isnan)(field1->GetPlane(1)->UpdatePhys()[r]))
{
//ASSERTL0(abs(field1->UpdatePhys()[r])<10000000000,
// "interp failed");
}
}
}
int main ( int  argc,
char *  argv[] 
)

Definition at line 20 of file FieldToField.cpp.

References ASSERTL0, Checkbndmeshes2D(), Checkbndmeshes3D(), Nektar::LibUtilities::SessionReader::CreateInstance(), Nektar::LibUtilities::Import(), InterpolateField(), InterpolateFieldHomo(), Nektar::NullNekDouble1DArray, Nektar::SpatialDomains::MeshGraph::Read(), SetFields(), and Writefield().

{
void SetFields(
SpatialDomains::MeshGraphSharedPtr &mesh,
vector<LibUtilities::FieldDefinitionsSharedPtr> fielddef,
LibUtilities::SessionReaderSharedPtr &session,
Array<OneD,MultiRegions::ExpListSharedPtr> &Exp,
int nvariables,
const vector<std::string> &variables,
bool homogeneous);
void InterpolateField(
Array<OneD, MultiRegions::ExpListSharedPtr> &field0,
Array<OneD, MultiRegions::ExpListSharedPtr> &field1,
Array<OneD, NekDouble> x1,
Array<OneD, NekDouble> y1,
Array<OneD, NekDouble> z1 = NullNekDouble1DArray,
NekDouble clamp_low = -10000000,
NekDouble clamp_up = 10000000);
void InterpolateFieldHomo(
MultiRegions::ExpListSharedPtr field0,
Array<OneD, NekDouble> x1,
Array<OneD, NekDouble> y1,
MultiRegions::ExpListSharedPtr field1);
bool Checkbndmeshes2D(
Array<OneD, NekDouble> x0,
Array<OneD, NekDouble> y0,
Array<OneD, NekDouble> x1,
Array<OneD, NekDouble> y1);
bool Checkbndmeshes3D(
Array<OneD, NekDouble> x0,
Array<OneD, NekDouble> y0,
Array<OneD, NekDouble> z0,
Array<OneD, NekDouble> x1,
Array<OneD, NekDouble> y1,
Array<OneD, NekDouble> z1);
void Writefield(
LibUtilities::SessionReaderSharedPtr vSession,
const vector<std::string> &variables,
string fieldfile,
SpatialDomains::MeshGraphSharedPtr &graph,
Array<OneD, MultiRegions::ExpListSharedPtr> &outfield);
if (argc != 5)
{
fprintf(stderr, "Usage: ./FieldToField meshfile0 fieldfile0 "
"meshfile1 fieldfile1\n");
exit(1);
}
//----------------------------------------------
string meshfile0(argv[argc-4]);
string fieldfile0(argv[argc-3]);
std::vector<std::string> filenames0;
filenames0.push_back(meshfile0);
filenames0.push_back(meshfile0);
LibUtilities::SessionReaderSharedPtr vSession
= LibUtilities::SessionReader::CreateInstance(argc, argv, filenames0);
// Read in mesh from input file0
SpatialDomains::MeshGraphSharedPtr graphShPt
= SpatialDomains::MeshGraph::Read(meshfile0);
int expdim = graphShPt->GetMeshDimension();
//----------------------------------------------
// Import fieldfile0.
vector<LibUtilities::FieldDefinitionsSharedPtr> fielddef;
vector<vector<NekDouble> > fielddata;
LibUtilities::Import(fieldfile0, fielddef, fielddata);
//----------------------------------------------
//read info from fldfile
// const std::vector<std::string> variables = fielddef[0]->m_fields;
const std::vector<std::string> variables = vSession->GetVariables();
bool homo = (fielddef[0]->m_numHomogeneousDir > 0)? true: false;
// Define Expansion
int nfields;
nfields = variables.size();
Array<OneD, MultiRegions::ExpListSharedPtr> fields;
fields= Array<OneD, MultiRegions::ExpListSharedPtr>(nfields);
SetFields(graphShPt,fielddef, vSession,fields,nfields,variables,homo);
int nq; //pointsper plane
//-----------------------------------------------
// Copy data from file:fill fields with the fielddata
if (fielddef[0]->m_numHomogeneousDir == 1)
{
nq = fields[0]->GetPlane(1)->GetTotPoints();
//THE IM PHYS VALUES ARE WRONG USING bwdTrans !!!
for (int j = 0; j < nfields; ++j)
{
for (int i = 0; i < fielddata.size(); ++i)
{
fields[j]->ExtractDataToCoeffs(fielddef[i],
fielddata[i],
fielddef[i]->m_fields[j],
fields[j]->UpdateCoeffs());
}
//bwd plane 0
fields[j]->GetPlane(0)->BwdTrans_IterPerExp(
fields[j]->GetPlane(0)->GetCoeffs(),
fields[j]->GetPlane(0)->UpdatePhys());
//bwd plane 1
fields[j]->GetPlane(1)->BwdTrans_IterPerExp(
fields[j]->GetPlane(1)->GetCoeffs(),
fields[j]->GetPlane(1)->UpdatePhys());
}
}
else
{
nq = fields[0]->GetTotPoints();
for (int j = 0; j < nfields; ++j)
{
for (int i = 0; i < fielddata.size(); ++i)
{
fields[j]->ExtractDataToCoeffs(fielddef[i],
fielddata[i],
fielddef[i]->m_fields[j],
fields[j]->UpdateCoeffs());
}
fields[j]->BwdTrans_IterPerExp(fields[j]->GetCoeffs(),
fields[j]->UpdatePhys());
}
}
// store mesh0 quadrature points
Array<OneD, NekDouble> x0(nq);
Array<OneD, NekDouble> y0(nq);
Array<OneD, NekDouble> z0(nq);
if (fielddef[0]->m_numHomogeneousDir == 1)
{
fields[0]->GetPlane(1)->GetCoords(x0, y0, z0);
}
else
{
if (expdim == 2)
{
fields[0]->GetCoords(x0, y0);
}
else if (expdim == 3)
{
fields[0]->GetCoords(x0, y0, z0);
}
}
//----------------------------------------------
//Read in the mesh1
string meshfile1(argv[argc-2]);
//Name of the output fieldfile
string fieldfile1(argv[argc-1]);
//-----------------------------------------------
//define the output field:
Array<OneD, MultiRegions::ExpListSharedPtr> outfield;
outfield = Array<OneD, MultiRegions::ExpListSharedPtr>(nfields);
//set output fields over the graphShPt1 graph
SpatialDomains::MeshGraphSharedPtr graphShPt1;
//remark: homo cases malloc() error or segmentation fault..
//remember: there is static cnt in stfields function to define
//the homo quantities only for the mesh0 case
graphShPt1 = SpatialDomains::MeshGraph::Read(meshfile1);
//define second session1..
std::vector<std::string> filenames1;
filenames1.push_back(meshfile1);
filenames1.push_back(meshfile1);
argc = 2;
argv[1] = argv[3];
argv[2] = argv[4];
LibUtilities::SessionReaderSharedPtr vSession1
= LibUtilities::SessionReader::CreateInstance(argc, argv,
filenames1,
vSession->GetComm());
//--------------------------------------------------
//set explist 1
SetFields(graphShPt1, fielddef, vSession1, outfield, nfields,
variables, homo);
//------------------------------------------------
// store the new points:
int nq1;
if (fielddef[0]->m_numHomogeneousDir == 1)
{
nq1 = outfield[0]->GetPlane(1)->GetTotPoints();
}
else
{
nq1 = outfield[0]->GetTotPoints();
}
Array<OneD, NekDouble> x1(nq1);
Array<OneD, NekDouble> y1(nq1);
Array<OneD, NekDouble> z1(nq1);
if (fielddef[0]->m_numHomogeneousDir == 1)
{
outfield[0]->GetPlane(1)->GetCoords(x1, y1, z1);
}
else
{
if (expdim == 2)
{
outfield[0]->GetCoords(x1, y1);
}
else if (expdim == 3)
{
outfield[0]->GetCoords(x1, y1, z1);
}
}
//------------------------------------------------
//check 2Dmeshes compatibilities
// same max min values x,y...
//bool check = false;
bool check = true;
if (expdim == 2)
{
//check = Checkbndmeshes2D(x0, y0, x1, y1);
}
else if (expdim == 3)
{
check = Checkbndmeshes3D(x0, y0, z0, x1, y1, z1);
}
ASSERTL0(check, "meshes not compatible (different borders)");
//-----------------------------------------------
if (fielddef[0]->m_numHomogeneousDir == 1)
{
for (int t = 0; t < nfields; t++)
{
InterpolateFieldHomo(fields[t], x1, y1, outfield[t]);
}
}
else
{
cout << "Interpolating [" << flush;
if (expdim == 2)
{
InterpolateField(fields, outfield, x1, y1);
}
else if (expdim == 3)
{
NekDouble clamp_up, clamp_low;
vSession->LoadParameter("ClampToUpperValue", clamp_up, 10000000);
vSession->LoadParameter("ClampToLowerValue", clamp_low, -10000000);
InterpolateField(fields, outfield, x1, y1, z1, clamp_low, clamp_up);
}
cout << "]" << endl;
}
//------------------------------------------------
//write fieldfile
Writefield(vSession, variables, fieldfile1, graphShPt1, outfield);
//------------------------------------------------
}
void SetFields ( SpatialDomains::MeshGraphSharedPtr &  mesh,
vector< LibUtilities::FieldDefinitionsSharedPtr >  fielddef,
LibUtilities::SessionReaderSharedPtr &  session,
Array< OneD, MultiRegions::ExpListSharedPtr > &  Exp,
int  nvariables,
const vector< std::string > &  variables,
bool  homogeneous 
)

< physical length in Y direction (if homogeneous)

< physical length in Z direction (if homogeneous)

< number of points in Y direction (if homogeneous)

< number of points in Z direction (if homogeneous)

Definition at line 300 of file FieldToField.cpp.

References Nektar::MemoryManager< DataType >::AllocateSharedPtr(), ASSERTL0, Nektar::LibUtilities::eFourier, and Nektar::LibUtilities::eFourierEvenlySpaced.

{
// Session reader stuff has to be evaluated only from the
// first session which refers to mesh0
static int cnt = 0;
// Setting parameteres for homogenous problems
NekDouble static LhomY;///< physical length in Y direction (if homogeneous)
NekDouble static LhomZ;///< physical length in Z direction (if homogeneous)
bool static DeclareCoeffPhysArrays = true;
int static npointsY;///< number of points in Y direction (if homogeneous)
int static npointsZ;///< number of points in Z direction (if homogeneous)
bool static useFFT = false;
bool static deal = false;
cnt++;
int i;
int expdim = mesh->GetMeshDimension();
switch (expdim)
{
case 1:
{
if (fielddef[0]->m_numHomogeneousDir == 1)
{
const LibUtilities::PointsKey PkeyY(
npointsY,
LibUtilities::eFourierEvenlySpaced);
const LibUtilities::BasisKey BkeyY(
LibUtilities::eFourier,
npointsY, PkeyY);
for (i = 0 ; i < nvariables; i++)
{
Exp[i] = MemoryManager<MultiRegions::
ContField3DHomogeneous1D>::AllocateSharedPtr(
session, BkeyY, LhomY,
useFFT, deal, mesh,
variables[i]);
}
}
else
{
for (i = 0 ; i < nvariables; i++)
{
Exp[i] = MemoryManager<MultiRegions::ContField1D>
::AllocateSharedPtr(session, mesh, variables[i]);
}
}
break;
}
case 2:
{
if (fielddef[0]->m_numHomogeneousDir == 1)
{
const LibUtilities::PointsKey PkeyZ(
npointsZ,
LibUtilities::eFourierEvenlySpaced);
const LibUtilities::BasisKey BkeyZ(
LibUtilities::eFourier,
npointsZ, PkeyZ);
MultiRegions::ContField3DHomogeneous1DSharedPtr firstfield =
MemoryManager<MultiRegions::ContField3DHomogeneous1D>::
AllocateSharedPtr(session, BkeyZ, LhomZ, useFFT,
deal, mesh, variables[0]);
Exp[0] = firstfield;
for (i = 1 ; i < nvariables; i++)
{
Exp[i] = MemoryManager<MultiRegions::
ContField3DHomogeneous1D>::
AllocateSharedPtr(*firstfield);
}
}
else
{
i = 0;
MultiRegions::DisContField2DSharedPtr firstfield;
firstfield = MemoryManager<MultiRegions::DisContField2D>::
AllocateSharedPtr(session, mesh, variables[i],
DeclareCoeffPhysArrays);
Exp[0] = firstfield;
for (i = 1 ; i < nvariables; i++)
{
Exp[i] = MemoryManager<MultiRegions::DisContField2D>
::AllocateSharedPtr(*firstfield, mesh, variables[i],
DeclareCoeffPhysArrays);
}
}
break;
}
case 3:
{
if (fielddef[0]->m_numHomogeneousDir == 1)
{
ASSERTL0(false,
"3D fully periodic problems not implemented yet");
}
else
{
i = 0;
MultiRegions::ExpList3DSharedPtr firstfield =
MemoryManager<MultiRegions::ExpList3D>::
AllocateSharedPtr(session, mesh);
Exp[0] = firstfield;
for (i = 1 ; i < nvariables; i++)
{
Exp[i] = MemoryManager<MultiRegions::ExpList3D>
::AllocateSharedPtr(*firstfield);
}
}
break;
}
default:
ASSERTL0(false, "Expansion dimension not recognised");
break;
}
}
void Writefield ( LibUtilities::SessionReaderSharedPtr  vSession,
const std::vector< std::string > &  variables,
string  fieldfile,
SpatialDomains::MeshGraphSharedPtr &  graph,
Array< OneD, MultiRegions::ExpListSharedPtr > &  outfield 
)

Definition at line 649 of file FieldToField.cpp.

References Nektar::LibUtilities::Write().

Referenced by main().

{
string var;
std::vector<LibUtilities::FieldDefinitionsSharedPtr> FieldDef
= outfield[0]->GetFieldDefinitions();
std::vector<std::vector<NekDouble> > FieldData(FieldDef.size());
Array<OneD, Array<OneD, NekDouble> > fieldcoeffs(outfield.num_elements());
for (int j = 0; j < fieldcoeffs.num_elements(); ++j)
{
if (FieldDef[0]->m_numHomogeneousDir == 1)
{
// plane 0
outfield[j]->GetPlane(0)->FwdTrans_IterPerExp(
outfield[j]->GetPlane(0)->GetPhys(),
outfield[j]->GetPlane(0)->UpdateCoeffs());
// plane 1
outfield[j]->GetPlane(1)->FwdTrans_IterPerExp(
outfield[j]->GetPlane(1)->GetPhys(),
outfield[j]->GetPlane(1)->UpdateCoeffs());
}
else
{
outfield[j]->FwdTrans_IterPerExp(
outfield[j]->GetPhys(),
outfield[j]->UpdateCoeffs());
}
fieldcoeffs[j] = outfield[j]->UpdateCoeffs();
for (int i = 0; i < FieldDef.size(); i++)
{
FieldDef[i]->m_fields.push_back(variables[j]);
outfield[0]->AppendFieldData(FieldDef[i], FieldData[i],
fieldcoeffs[j]);
}
}
LibUtilities::Write(fieldfile, FieldDef, FieldData);
}
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