[vtkusers] How to bring an object to the coordinate's origin

[Wes Turner]

vtkUnstructuredGridToPolyDataFilter is an abstract class without a concrete
implementation, so you can't actually use it in a program.  Try
vtkGeometryFilter.

- Wes

On Fri, Apr 1, 2011 at 10:22 AM, nuno.jf <nunofernandes7 at gmail.com> wrote:

> Hi David,
> (For now) I am using Paraview to delete the points that I don't want. After
> removing all these points, I save the file using Paraview as a legacy vtk
> file. As output I get an Unstructured Grid vtk file.
> I successfuly tested the example you had suggested me
> (http://www.vtk.org/Wiki/VTK/Examples/Cxx#Surface_reconstruction) reading
> a
> structured VTK file, by changing some lines in the code.
> The problem is that I want to use this code to read an unstructured grid
> vtk
> file, so I added/changed the following in order to convert from
> unstructured
> grid to polydata:
>
> #include
> #include
> #include
>
> // read unstructured grid
>   vtkUnstructuredGridReader *reader = vtkUnstructuredGridReader::New();
>   reader->SetFileName(argv[1]);
>   reader->Update();
> // create object
>   vtkUnstructuredGrid * unstructured= vtkUnstructuredGrid::New();
>   unstructured = reader ->GetOutput();
>   unstructured ->Update();
>
> //convert to polydata
>   vtkUnstructuredGridToPolyDataFilter *teste =
> vtkUnstructuredGridToPolyDataFilter::New();
>   teste->SetInput(unstructured);
>   teste->Update();
>
> Then, I get the following error:
>
>  "error C2440: 'initializing' : cannot convert from 'vtkAlgorithm *' to
> 'vtkUnstructuredGridToPolyDataFilter *' "
>
> What am I doing wrong here?
> Any help would be greatly appreciated.
> Best regards
>
>
> --
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-- 
Wesley D. Turner, Ph.D.
Kitware, Inc.
Technical Leader
28 Corporate Drive
Clifton Park, NY 12065-8662
Phone: 518-881-4920
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