# 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 2.8)

    PROJECT(SortDataArray)

    find_package(VTK REQUIRED)
    include(${VTK_USE_FILE})

    add_executable(SortDataArray MACOSX_BUNDLE SortDataArray.cxx)

    target_link_libraries(SortDataArray ${VTK_LIBRARIES})

### 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.