# ParallelCoordinates

VTKExamples/Cxx/Plotting/ParallelCoordinates

### Code

ParallelCoordinates.cxx

    #include <vtkRenderer.h>
    #include <vtkRenderWindow.h>
    #include <vtkSmartPointer.h>
    #include <vtkChartParallelCoordinates.h>
    #include <vtkPlot.h>
    #include <vtkTable.h>
    #include <vtkFloatArray.h>
    #include <vtkContextView.h>
    #include <vtkContextScene.h>
    #include <vtkRenderWindowInteractor.h>

    int main(int, char*[])
    {
      // Set up a 2D scene, add an XY chart to it
      vtkSmartPointer<vtkContextView> view =
        vtkSmartPointer<vtkContextView>::New();
      view->GetRenderer()->SetBackground(.2, .3, .4);
      view->GetRenderWindow()->SetSize(800, 600);
      vtkSmartPointer<vtkChartParallelCoordinates> chart =
        vtkSmartPointer<vtkChartParallelCoordinates>::New();
      view->GetScene()->AddItem(chart);

      // Create a table with some points in it...
      vtkSmartPointer<vtkTable> table =
        vtkSmartPointer<vtkTable>::New();
      vtkSmartPointer<vtkFloatArray> arrX =
        vtkSmartPointer<vtkFloatArray>::New();
      arrX->SetName("Field 1");
      table->AddColumn(arrX);
      vtkSmartPointer<vtkFloatArray> arrC =
        vtkSmartPointer<vtkFloatArray>::New();
      arrC->SetName("Field 2");
      table->AddColumn(arrC);
      vtkSmartPointer<vtkFloatArray> arrS =
        vtkSmartPointer<vtkFloatArray>::New();
      arrS->SetName("Field 3");
      table->AddColumn(arrS);
      vtkSmartPointer<vtkFloatArray> arrS2 =
        vtkSmartPointer<vtkFloatArray>::New();
      arrS2->SetName("Field 4");
      table->AddColumn(arrS2);
      // Test charting with a few more points...

      table->SetNumberOfRows(10);
      for (int i = 0; i < 10; ++i)
      {
        table->SetValue(i, 0, 0 * i);
        table->SetValue(i, 1, 1 * i);
        table->SetValue(i, 2, 2 * i);
        table->SetValue(i, 3, 3 * i);
      }

      chart->GetPlot(0)->SetInputData(table);

      view->GetRenderWindow()->SetMultiSamples(0);

      view->GetInteractor()->Initialize();
      view->GetInteractor()->Start();

      return EXIT_SUCCESS;
    }

### CMakeLists.txt

    cmake_minimum_required(VERSION 3.3 FATAL_ERROR)

    project(ParallelCoordinates)

    find_package(VTK COMPONENTS
      vtkChartsCore
      vtkCommonCore
      vtkCommonDataModel
      vtkInteractionStyle
      vtkRenderingContext2D
      vtkRenderingContextOpenGL2
      vtkRenderingCore
      vtkRenderingFreeType
      vtkRenderingOpenGL2
      vtkViewsContext2D QUIET)
    if (NOT VTK_FOUND)
      message("Skipping ParallelCoordinates: ${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(ParallelCoordinates MACOSX_BUNDLE ParallelCoordinates.cxx )
      target_link_libraries(ParallelCoordinates PRIVATE ${VTK_LIBRARIES})
    else ()
      # include all components
      add_executable(ParallelCoordinates MACOSX_BUNDLE ParallelCoordinates.cxx )
      target_link_libraries(ParallelCoordinates PRIVATE ${VTK_LIBRARIES})
      # vtk_module_autoinit is needed
      vtk_module_autoinit(
        TARGETS ParallelCoordinates
        MODULES ${VTK_LIBRARIES}
        )
    endif ()

### Download and Build ParallelCoordinates

Click here to download ParallelCoordinates and its CMakeLists.txt file. Once the tarball ParallelCoordinates.tar has been downloaded and extracted,

    cd ParallelCoordinates/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:

    ./ParallelCoordinates

WINDOWS USERS

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