VTK/Examples/Cxx/WishList/Plotting/PlotLegacyMethod

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VTK Examples Baseline Plotting TestPlotLegacyMethod.png

PlotLegacyMethod.cxx

#include <vtkSphereSource.h>
#include <vtkMath.h>
#include <vtkDoubleArray.h>
#include <vtkFieldData.h>
#include <vtkPolyData.h>
#include <vtkSmartPointer.h>
#include <vtkPolyDataMapper.h>
#include <vtkActor.h>
#include <vtkRenderWindow.h>
#include <vtkRenderer.h>
#include <vtkRenderWindowInteractor.h>
#include <vtkXYPlotActor.h>

int main(int, char *[])
{
  vtkSmartPointer<vtkXYPlotActor> plot = 
      vtkSmartPointer<vtkXYPlotActor>::New();
  plot->ExchangeAxesOff();
  plot->SetLabelFormat( "%g" );
  plot->SetXTitle( "Level" );
  plot->SetYTitle( "Frequency" );
  plot->SetXValuesToIndex();

  for (unsigned int i = 0 ; i < 2 ; i++)
    {
    vtkSmartPointer<vtkDoubleArray> array_s = 
        vtkSmartPointer<vtkDoubleArray>::New();
    vtkSmartPointer<vtkFieldData> field = 
        vtkSmartPointer<vtkFieldData>::New();
    vtkSmartPointer<vtkDataObject> data = 
        vtkSmartPointer<vtkDataObject>::New();

    for (int b = 0; b < 30; b++)   /// Assuming an array of 30 elements
      {
      double val = vtkMath::Random(0.0,2.0);
      array_s->InsertValue(b,val);
      }
    field->AddArray(array_s);
    data->SetFieldData(field);
    plot->AddDataObjectInput(data);    
  }

  plot->SetPlotColor(0,1,0,0);
  plot->SetPlotColor(1,0,1,0);

  vtkSmartPointer<vtkRenderer> renderer = 
      vtkSmartPointer<vtkRenderer>::New();
  renderer->AddActor(plot);
 
  vtkSmartPointer<vtkRenderWindow> renderWindow = 
      vtkSmartPointer<vtkRenderWindow>::New();
  renderWindow->AddRenderer( renderer );
  renderWindow->SetSize(500,500);
 
  vtkSmartPointer<vtkRenderWindowInteractor> interactor =
      vtkSmartPointer<vtkRenderWindowInteractor>::New();
  interactor->SetRenderWindow( renderWindow );
 
  // Initialize the event loop and then start it
  interactor->Initialize();
  interactor->Start(); 

  return EXIT_SUCCESS;
}

Please try the new VTKExamples website.

CMakeLists.txt

cmake_minimum_required(VERSION 2.8)

PROJECT(PlotLegacyMethod)

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

add_executable(PlotLegacyMethod MACOSX_BUNDLE PlotLegacyMethod.cxx)

if(VTK_LIBRARIES)
  target_link_libraries(PlotLegacyMethod ${VTK_LIBRARIES})
else()
  target_link_libraries(PlotLegacyMethod vtkHybrid vtkWidgets)
endif()

Download and Build PlotLegacyMethod

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

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

cd PlotLegacyMethod/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:

./PlotLegacyMethod

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.