[Paraview] AMR Cut Plane

[Utkarsh Ayachit]

I believe the reader is missing the BlankCells(
http://www.vtk.org/doc/nightly/html/classvtkAMRUtilities.html#a6656bada8c6d01b43e15299567af7657)
call. If I remember correctly, the blanking cells generated
by vtkImageToAMR.cxx get lost when the data is saved to disk (since we
don't have a "true" vtkUniformGrid writer, we just write it out as
vtkImageData in the vth writer. As a result the blanking arrays need to
recomputed on reading back in.

Mind reporting a bug for this? Thanks.

Utkarsh


On Mon, Jul 21, 2014 at 9:59 AM, Henry Lehmann <
henry.lehmann at informatik.tu-freiberg.de> wrote:

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> Hello Paraview Users,
>
> i am recently working with vtkOverlappingAMR. i set up one of this
> data sets using the "Image to AMR" filter in paraview, which basicly
> creates an octree with 4 levels and 512 blocks on level 4 in my setup.
> so i basicly converted mydata.vti into mydata.vth.
>
> now i want to use mydata.vth in order to quickly calculate the result
> of an arbitrary pipeline and save time adjusting the parameters of the
> pipeline. i want to adjust the parameters on level 0 and then increase
> the level to see the full resolution result.
>
> for example i have the pipeline: mydata.vth (vtkOverlappingAMR) -> AMR
> Cut Plane. now i move the cut plane and apply to see the result. when
> increasing the level from 1 to 2 in the reader i get a strange result.
> it looks like paraview doesnt remove the regions in which the amr
> levels overlap. this means the amr cut plane cuts out the data on
> level 0 and on level 1. Since Image to AMR creates an octree in which
> all lower levels are overlapping with higher ones, the lower levels
> always cover the higher resolution results when setting the level
> above 1 in the amr reader.
>
> how can i fix this?
>
> Best regards,
> Henry
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