[Paraview] error using vtk in paraview animation

[Li Guan]

Hi all,

I have a small piece of python code in every paraview(3.98.0) animation,

from vtkRenderingCorePython import *;

from vtkIOImagePython import *;

import paraview.vtk as vtk;


def start_cue(self):

self.frame = 1;


 self.w2i = vtkWindowToImageFilter();

self.view = GetActiveView().GetRenderWindow();

self.writer = vtkTIFFWriter();

...

But in output window, I got this error message,
ERROR: In
..\paraview\src\paraview\VTK\Rendering\Core\vtkWindowToImageFilter.cxx,
line 146

vtkWindowToImageFilter (14E3AFB0): Please specify a renderer as input!


I checked the vtkWindowToImageFilter documentation and examples, it seems I
was using the right format? How can I fix it? Many thanks!


Li Guan
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