[vtkusers] How can I change structuregrid to structuredpoints using vtkProgeFilter ?

[zw005 at mail1.sjtu.edu.cn]

I have an structured grid and wish to visualize it with tools specific to vtkStructuredPoints(such as volume rendering).How can I change structured grid to structure points using vtkProbeFilter to resample structured grid with a volume? So I can visualize the volume.

thanks in advance for your help!
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