Export OpenVDB from ParaView and import it back into ParaView, the data is different, is there something wrong?

ParaView Support
1

I use Paraview 5.11.1 and use the Wavelet data which is in the paraview Source, I export it to OpenVDB
format and then load the vdb file back. But I figure out that the two datasets’s cell number and point number are different. Is that right? Thanks for response.

image
image1920×1007 225 KB

image
image1912×1005 234 KB

2

Looks like an issue to me, could you open it: https://gitlab.kitware.com/paraview/paraview/-/issues

3

OK, I’ve already opened it.
Export OpenVDB from ParaView and import it back into ParaView, the data is different, is there something wrong? (#22175) · Issues · ParaView / ParaView · GitLab (kitware.com)

4

In general this is expected to work. The OpenVDB file format should not be considered a mesh representation format as it does not specify whether the grid should be image data, unstructured grid, point cloud, etc. Additionally, the OpenVDB format does not specify whether the field information it is storing is point data or cell data.