ArrayWriter

VTKExamples/Cxx/Utilities/ArrayWriter

Question

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Code

ArrayWriter.cxx

#include <vtkDenseArray.h>
#include <vtkSmartPointer.h>
#include <vtkArrayWriter.h>
#include <vtkArrayData.h>

int main(int, char *[])
{
  vtkSmartPointer<vtkDenseArray<double> > array =
    vtkSmartPointer<vtkDenseArray<double> >::New();
  array->Resize(1,3);
  array->SetValue(0,0, 1.0);
  array->SetValue(0,1, 2.0);
  array->SetValue(0,2, 3.0);
  {
  // Method 1
  vtkSmartPointer<vtkArrayWriter> writer =
    vtkSmartPointer<vtkArrayWriter>::New();
  vtkSmartPointer<vtkArrayData> arrayData =
    vtkSmartPointer<vtkArrayData>::New();
  arrayData->AddArray(array);
  writer->SetInputData(arrayData);
  vtkStdString file1 = "Test1.txt";
  writer->Write(file1);
  }
  {
  vtkStdString file2 = "Test2.txt";
  // Method 2
  vtkSmartPointer<vtkArrayWriter> writer =
    vtkSmartPointer<vtkArrayWriter>::New();
  writer->Write(array, file2);
  }

  return EXIT_SUCCESS;
}

CMakeLists.txt

cmake_minimum_required(VERSION 3.3 FATAL_ERROR)

project(ArrayWriter)

find_package(VTK COMPONENTS 
  vtkCommonCore
  vtkCommonDataModel
  vtkIOCore QUIET)
if (NOT VTK_FOUND)
  message("Skipping ArrayWriter: ${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(ArrayWriter MACOSX_BUNDLE ArrayWriter.cxx )
  target_link_libraries(ArrayWriter PRIVATE ${VTK_LIBRARIES})
else ()
  # include all components
  add_executable(ArrayWriter MACOSX_BUNDLE ArrayWriter.cxx )
  target_link_libraries(ArrayWriter PRIVATE ${VTK_LIBRARIES})
  # vtk_module_autoinit is needed
  vtk_module_autoinit(
    TARGETS ArrayWriter
    MODULES ${VTK_LIBRARIES}
    )
endif () 

Download and Build ArrayWriter

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

cd ArrayWriter/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:

./ArrayWriter

WINDOWS USERS

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