VTK/Examples/Cxx/Utilities/SortDataArray

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SortDataArray.cxx

#include <vtkSortDataArray.h>
#include <vtkDoubleArray.h>
#include <vtkIntArray.h>
#include <vtkSmartPointer.h>
 
int main(int, char *[])
{
 
  vtkSmartPointer<vtkDoubleArray> valueArray =
    vtkSmartPointer<vtkDoubleArray>::New();
  valueArray->InsertNextValue(20.0);
  valueArray->InsertNextValue(10.0);
  valueArray->InsertNextValue(30.0);
 
  vtkSmartPointer<vtkIntArray> keyArray =
    vtkSmartPointer<vtkIntArray>::New();
  keyArray->InsertNextValue(1);
  keyArray->InsertNextValue(0);
  keyArray->InsertNextValue(2);
 
  std::cout << "Unsorted: " << valueArray->GetValue(0) << " "
            << valueArray->GetValue(1) << " "
            << valueArray->GetValue(2) << std::endl;
 
  // Sort the array
  vtkSmartPointer<vtkSortDataArray> sortDataArray =
    vtkSmartPointer<vtkSortDataArray>::New();
  sortDataArray->Sort(keyArray, valueArray);
 
  std::cout << "Sorted: " << valueArray->GetValue(0) << " "
            << valueArray->GetValue(1) << " "
            << valueArray->GetValue(2) << std::endl;
 
  return EXIT_SUCCESS;
}

CMakeLists.txt

cmake_minimum_required(VERSION 2.8)
 
PROJECT(SortDataArray)
 
find_package(VTK REQUIRED)
include(${VTK_USE_FILE})
 
add_executable(SortDataArray MACOSX_BUNDLE SortDataArray.cxx)
 
if(VTK_LIBRARIES)
  target_link_libraries(SortDataArray ${VTK_LIBRARIES})
else()
  target_link_libraries(SortDataArray vtkHybrid vtkWidgets)
endif()

Download and Build SortDataArray

Click here to download SortDataArray. and its CMakeLists.txt file.

Once the tarball SortDataArray.tar has been downloaded and extracted,

cd SortDataArray/build 
  • If VTK is installed:
cmake ..
  • If VTK is not installed but compiled on your system, you will need to specify the path to your VTK build:
cmake -DVTK_DIR:PATH=/home/me/vtk_build ..

Build the project:

make

and run it:

./SortDataArray

WINDOWS USERS PLEASE NOTE: Be sure to add the VTK bin directory to your path. This will resolve the VTK dll's at run time.