[vtkusers] Concatenating vtkDataArrays

[David Doria]

Is there a way to do this:

  vtkSmartPointer<vtkIntArray> array1 =
    vtkSmartPointer<vtkIntArray>::New();
  array1->InsertNextValue(0);
  array1->InsertNextValue(1);

  vtkSmartPointer<vtkIntArray> array2 =
    vtkSmartPointer<vtkIntArray>::New();
  array2->InsertNextValue(2);
  array2->InsertNextValue(3);

  array1->Append(array2)

  or

  array3 = array1 + array2

 ?

I saw vtkConcatenateArray, but it only seems to work for vtkDenseArray style
arrays.

Thanks,

David
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