SortDataArray

VTKExamples/Cxx/Utilities/SortDataArray

Code

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 3.3 FATAL_ERROR)

project(SortDataArray)

find_package(VTK COMPONENTS 
  vtkCommonCore QUIET)
if (NOT VTK_FOUND)
  message("Skipping SortDataArray: ${VTK_NOT_FOUND_MESSAGE}")
  return ()
endif()
message (STATUS "VTK_VERSION: ${VTK_VERSION}")
if (VTK_VERSION VERSION_LESS "8.90.0")
  # old system
  include(${VTK_USE_FILE})
  add_executable(SortDataArray MACOSX_BUNDLE SortDataArray.cxx )
  target_link_libraries(SortDataArray PRIVATE ${VTK_LIBRARIES})
else ()
  # include all components
  add_executable(SortDataArray MACOSX_BUNDLE SortDataArray.cxx )
  target_link_libraries(SortDataArray PRIVATE ${VTK_LIBRARIES})
  # vtk_module_autoinit is needed
  vtk_module_autoinit(
    TARGETS SortDataArray
    MODULES ${VTK_LIBRARIES}
    )
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

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