# ArrayWriter

VTKExamples/Cxx/Utilities/ArrayWriter

### Code

ArrayWriter.cxx

    #include <vtkVersion.h>
    #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);
    #if VTK_MAJOR_VERSION <= 5
      writer->SetInput(arrayData);
    #else
      writer->SetInputData(arrayData);
    #endif
      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 2.8)

    PROJECT(ArrayWriter)

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

    add_executable(ArrayWriter MACOSX_BUNDLE ArrayWriter.cxx )

    target_link_libraries(ArrayWriter ${VTK_LIBRARIES})

### 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.