ArrayLookup

VTKExamples/Cxx/Utilities/ArrayLookup

Code

ArrayLookup.cxx

#include <vtkSmartPointer.h>
#include <vtkFloatArray.h>
#include <vtkIdList.h>

int main(int, char *[])
{
  vtkSmartPointer<vtkFloatArray> distances =
    vtkSmartPointer<vtkFloatArray>::New();
  distances->SetNumberOfComponents(1);
  distances->SetName("Distances");

  distances->InsertNextValue(5);
  distances->InsertNextValue(15);
  distances->InsertNextValue(15);
  distances->InsertNextValue(25);
  distances->InsertNextValue(15);

  // Get first location
  vtkIdType result = distances->LookupValue(15);
  std::cout << "result: " << result << std::endl;

  // Get all locations
  vtkSmartPointer<vtkIdList> idList =
    vtkSmartPointer<vtkIdList>::New();
  distances->LookupValue(15, idList);
  std::cout << "found at: " << std::endl;
  for(vtkIdType i = 0; i < idList->GetNumberOfIds(); i++)
  {
    std::cout << idList->GetId(i) << " ";
  }

  return EXIT_SUCCESS;
}

CMakeLists.txt

cmake_minimum_required(VERSION 2.8)

PROJECT(ArrayLookup)

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

add_executable(ArrayLookup MACOSX_BUNDLE ArrayLookup.cxx )

target_link_libraries(ArrayLookup ${VTK_LIBRARIES})

Download and Build ArrayLookup

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

cd ArrayLookup/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:

./ArrayLookup

WINDOWS USERS

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