Method LoadCellVarData

IO/NetCDF/vtkMPASReader.cxx:2531–2573

//------------------------------------------------------------------------------

vtkDataArray* vtkMPASReader::LoadCellVarData(int variableIndex)
{
  int varid = this->Internals->cellVars[variableIndex];
  char varname[NC_MAX_NAME + 1];
  if (this->Internals->nc_err(nc_inq_varname(this->Internals->ncFile, varid, varname)))
  {
    vtkErrorMacro(<< "No NetCDF data for cellVar @ index " << variableIndex);
    return nullptr;
  }

  vtkDebugMacro(<< "Loading cell data array named: " << varname);

  // Get data type:
  nc_type typeNc;
  if (this->Internals->nc_err(nc_inq_vartype(this->Internals->ncFile, varid, &typeNc)))
  {
    return nullptr;
  }
  int typeVtk = NcTypeToVtkType(typeNc);

  // Allocate data array pointer for this variable:
  vtkSmartPointer<vtkDataArray> array = this->LookupCellDataArray(variableIndex);
  if (array == nullptr)
  {
    vtkDebugMacro(<< "Allocating data array.");
    array = vtkSmartPointer<vtkDataArray>::Take(vtkDataArray::CreateDataArray(typeVtk));
  }
  array->SetName(varname);
  array->SetNumberOfComponents(1);
  array->SetNumberOfTuples(this->MaximumCells);

  if (!MPASDispatcher::Execute(array, *this->Internals, varid, vtkMPASReader::Internal::Cell{}))
  {
    vtkErrorMacro(<< "Unsupported data type for variable: " << varname);
    return nullptr;
  }
  if (this->Internals->CellResult)
  {
    this->Internals->cellArrays[variableIndex] = array;
    return array;
  }
  return nullptr;
}

//------------------------------------------------------------------------------
vtkDataArray* vtkMPASReader::LookupPointDataArray(int varIdx)