Problem in SetInputConnection.

Support
1

Dear All,

Taking in account the code below:

    unsigned char *image3; //contains the raw image

vtkNew<vtkImageConnectivityFilter> connectivity;
    vtkSmartPointer<vtkImageData> image4 =  vtkSmartPointer<vtkImageData>::New();

    image4->SetDimensions(dim3);
    image4->SetSpacing(scale1);   
image4->AllocateScalars(VTK_UNSIGNED_CHAR, 1);
memcpy(image4->GetScalarPointer(), image3, dim3[0]*dim3[1]*dim3[2]);
    ..........
    ..........
    ..........
    connectivity->SetInputConnection(image4->XXXXXXXXXXXX);

Can you please help me in what I have to put in “XXXXXXXXXXXXX”?

Thanks,

Luís Gonçalves

2

If you aim to use VTK, it might be worth reading the free book available in PDF especially the pipeline section.

Otherwise the answer is:

  1. Your image4 is a dataset not an algorithm therefore you can not use SetInputConnection
  2. To connect a dataset to an algorithm you need to use SetInputData instead.
3

Thanks.