[vtkusers] contour plot from tecplot files

[Ahmad]

Hi All,

I have a problem in getting a correct contour plot from reading tecplot
files. I did the following but I get a contour which is completely white.
The Tecplot file has X, Y, U, V, MAG, FLAG variables. Could someone help me
with this?

vtkCompositeDataPipeline* exec = vtkCompositeDataPipeline::New();

vtkSmartPointer<vtkTecplotReader> reader = 
vtkSmartPointer<vtkTecplotReader>::New();
reader->SetFileName("myfile.dat");		
reader->Update();

vtkSmartPointer<vtkCompositeDataGeometryFilter> geom =
vtkSmartPointer<vtkCompositeDataGeometryFilter>::New();	
geom->SetExecutive(exec);
geom->SetInputConnection(0,reader->GetOutputPort(0)); 
geom->Update(); 	

vtkSmartPointer<vtkPolyData> data = geom->GetOutput();
data->GetPointData()->SetScalars( data->GetPointData()->GetArray("V") );

vtkSmartPointer<vtkPolyDataMapper> mapper =
vtkSmartPointer<vtkPolyDataMapper>::New();
mapper->SetInput(data);

vtkSmartPointer<vtkActor> Actor = vtkSmartPointer<vtkActor>::New();
Actor->SetMapper(mapper);

vtkSmartPointer<vtkRenderer> Renderer = vtkSmartPointer<vtkRenderer>::New();
Renderer->AddActor(Actor);

Thanks,
Ahmad

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