[vtkusers] updating SG scalars

[Jeff Lee]

Randy Heiland wrote:

>I've visited this problem in the past, but I just like to relive these
>moments...
>
>I have a vtkStructuredGrid containing a grid and just one scalar field.  I want
>to read in/display filters for the SG, then read in a vtkFieldData file and
>update the scalar field (and filters).  I currently try this for the update:
>
>dor = vtkDataObjectReader()
>dor.SetFileName(fieldfile)
>dor.Update()
>
>print 'doing GetArray(0)'
>scalars = vtkFloatArray()
>scalars = dor.GetOutput().GetFieldData().GetArray(0)
>vtkSG1.GetPointData().SetScalars(scalars)
>vtkSG1.GetPointData().Modified()
>vtkSG1.Update()
>
>However, it doesn't change seem to change the scalar field.  Is this more or
>less the proper approach, or should I do it differently?
>
I do something like

    Grid->GetCellData()->AddArray(da);
    Grid->GetCellData()->SetActiveScalars(da->GetName());
    Grid->Modified();

-Jeff

>
>--Randy
>_______________________________________________
>This is the private VTK discussion list. 
>Please keep messages on-topic. Check the FAQ at: <http://public.kitware.com/cgi-bin/vtkfaq>
>Follow this link to subscribe/unsubscribe:
>http://public.kitware.com/mailman/listinfo/vtkusers
>
>  
>