VTK/Examples/IO/Cxx/FindAllArrayNames

//
// FindAllNames - find all of the array names in an XML Polydata file
//
#include <vtkSmartPointer.h>
#include <vtkPolyData.h>
#include <vtkPointData.h>
#include <vtkXMLPolyDataReader.h>
#include <vtkPointData.h>
#include <vtkCellData.h>
 
#include <iostream>
#include <vtkstd/string>
#include <vtkstd/vector>
#include <cstdlib>
 
 
void FindAllArrays(const std::string &InputFilename);
 
int main(int argc, char *argv[])
{
  if(argc != 2)
    {
    cerr << "Usage: " << argv[0] << " InputFilename" << endl;;
    return EXIT_FAILURE;
    }
  vtkstd::string inputFilename = argv[1];
  FindAllArrays(inputFilename);
 
  return EXIT_SUCCESS;
}
 
void FindAllArrays(const std::string &InputFilename)
{
  vtkSmartPointer<vtkXMLPolyDataReader> reader =
    vtkSmartPointer<vtkXMLPolyDataReader>::New();
  reader->SetFileName(InputFilename.c_str());
  reader->Update();
 
  vtkPolyData* polydata = reader->GetOutput();
 
  // First get the point data arrays
  {
  unsigned int numArrays = polydata->GetPointData()->GetNumberOfArrays();
  std::cout << "Number of point data arrays: " << numArrays << "\n";
 
  std::vector<std::string> arrayNames;
  for(unsigned int i = 0; i < numArrays; i++)
    {
    arrayNames.push_back(polydata->GetPointData()->GetArrayName(i));
    std::cout << "Array " << i << ": " << arrayNames[i] << "\n";
    }
  }
 
  // Next get the cell data arrays
  {
  unsigned int numArrays = polydata->GetCellData()->GetNumberOfArrays();
  std::cout << "Number of cell data arrays: " << numArrays << "\n";
 
  std::vector<std::string> arrayNames;
  for(unsigned int i = 0; i < numArrays; i++)
    {
    arrayNames.push_back(polydata->GetCellData()->GetArrayName(i));
    std::cout << "Array " << i << ": " << arrayNames[i] << "\n";
    }
  }
}