VTK/Examples/Cxx/TextAnalysis/PowerWeighting

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PowerWeighting.cxx

#include <vtkSmartPointer.h>
#include <vtkPowerWeighting.h>
#include <vtkDenseArray.h>

int main(int, char *[])
{
  vtkSmartPointer<vtkDenseArray<double> > array =
    vtkSmartPointer<vtkDenseArray<double> >::New();
  array->Resize(2);
  array->SetValue(0, 3);
  array->SetValue(1, 4);

  vtkSmartPointer<vtkArrayData> arrayData =
    vtkSmartPointer<vtkArrayData>::New();
  arrayData->AddArray(array);
  
  vtkSmartPointer<vtkPowerWeighting> powerWeighting =
    vtkSmartPointer<vtkPowerWeighting>::New();
  powerWeighting->SetPower(2);
  powerWeighting->SetInputConnection(arrayData->GetProducerPort());
  powerWeighting->Update();
  
  vtkSmartPointer<vtkArrayData> outputArrayData = powerWeighting->GetOutput();
  vtkSmartPointer<vtkDenseArray<double> > outputArray = vtkDenseArray<double>::SafeDownCast(outputArrayData->GetArray(0));

  std::cout << outputArray->GetValue(0) << std::endl;
  std::cout << outputArray->GetValue(1) << std::endl;
  
  return EXIT_SUCCESS;
}

Please try the new VTKExamples website.

CMakeLists.txt

cmake_minimum_required(VERSION 2.8)

PROJECT(PowerWeighting)

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

add_executable(PowerWeighting MACOSX_BUNDLE PowerWeighting.cxx)

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

Download and Build PowerWeighting

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

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

cd PowerWeighting/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:

./PowerWeighting

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.