[vtkusers] AddArray() to polydata

[David Doria]

On Tue, Sep 28, 2010 at 8:39 PM, ChiaWeng Boon <chiaweng at gmail.com> wrote:

> Hi,
>
> My AddArray() to this polydata does not work.  I tried also
> GetCellData()->SetScalars(speed).  The array/variable speed is not
> present!  Can someone tell me why?
>
>                 /* vtksamplefunction before this */
>                 vtkContourFilter *contours = vtkContourFilter::New();
>                 contours->SetInput(sample->GetOutput());
>                 contours->GenerateValues(1,-0.01, 0.01);
>                vtkSmartPointer<vtkPolyData> polydata =
> vtkSmartPointer<vtkPolyData>::New();
>                polydata = contours->GetOutput();
>                vtkSmartPointer<vtkUnsignedCharArray> speed =
> vtkSmartPointer<vtkUnsignedCharArray>::New();
>                speed->SetName("pbColors");
>                vtkIdType nbCells=polydata->GetNumberOfPoints();
>                for (int i=0;i<nbCells;i++){
>                        speed->InsertNextValue(2);
>                }
>                polydata->GetPointData()->AddArray(speed);    // HELP HELP
>                polydata->Update();
>
> Yours,
> boon
>
>
How have you tried to access it when you decided it didn't exist? You have
named it "pbColors" :

speed->SetName("pbColors");

so it should show up as that if you're looking at it in Paraview or trying
to access it by name.

David
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