[Paraview] output->GetPointData()->SetScalars(pointScalars); No effect.

[庞庆源]

I write a simple reader,inheriting from vtkPolyDataAlgorithm.But
SetScalars() cannot color the plane.When I test it use general vtk
polydata->mapper->actor->renderer->renderwindow,I can see different color
at different point.Does someone know the reason?Thank you.
-- 
庞庆源 <pangqingyuan1991 at gmail.com>
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