[vtkusers] about example on page 126(VTK user's guide)

[Amy Squillacote]

Please keep the discussion on the mailing list. That way other people 
can contribute to the discussion, and the solutions are archived for 
future reference.

In the example listed in the VTK FAQ, the compiler could not convert 
from vtkDataSet to vtkImageData, so to resolve this, vtkImageData.h 
needed to be included. In your case, the compiler does not know that a 
vtkPolyData is a vtkPointSet; to resolve this, you should include 
vtkPolyData.h.

- Amy

jere ju wrote:
> i tried to add the file "vtkImageData.h", but it's still wrong?
> my code:
>  vtkImageReader *reader = vtkImageReader::New();
>  reader->SetDataByteOrderToLittleEndian();
>  reader->SetDataExtent(0,63,0,63,40,40);
>  reader->SetFilePrefix("H:\\vtk40Data\\VTKData\\Data\\headsq\\quarter");
>  reader->SetDataMask(0x7fff);
>  
>  vtkImageDataGeometryFilter *geometry = vtkImageDataGeometryFilter::New();
>  geometry->SetInput(reader->GetOutput());
>  
>  vtkWarpScalar *warp = vtkWarpScalar::New();
>  warp->SetInput(geometry->GetOutput());
>  warp->SetScaleFactor(0.005);
>  
>  
> error C2664: 'SetInput' : cannot convert parameter 1 from 'class 
> vtkPolyData *' to 'class vtkPointSet *'
>         Types pointed to are unrelated; conversion requires 
> reinterpret_cast, C-style cast or function-style cast