Hi again list, Inspired by David Ortley's recent success (see "Smooth seams in SILO files") I wonder if perhaps the way I'm doing it is correct, but Paraview is incorrectly considering the values at hidden nodes when calculating data ranges.
Essentially my "option 3" (writing a vtkGhostLevels array) appears to work as it should, and the "seams" are hidden in my parallel data. But, if I then Extract Surface and look at the Data Arrays -> Data Ranges I see values which can only be from non-surface nodes. I suspect they are probably from nodes on the (hidden) interior surfaces. This is obviously a bug. I could probably provide a minimal example if useful. Best wishes, Louie On 17 January 2015 at 16:26, Louie Cardone-Noott < louie.cardone-no...@linacre.ox.ac.uk> wrote: > Hi Paraview list, > > I use a finite element code that generates VTK output, but I'm having > trouble dealing with halo (ghost) nodes/elements correctly. > > We currently partition meshes node-wise, and each process writes all its > owned nodes and one level of halo nodes to a chunk. Once all the chunks are > loaded there is a "double layer" of internal boundaries between processes. > I'd really like to be able to use the Extract Surface filter correctly but > as you would expect it also finds all the internal surfaces. From searching > I've tried: > > * Clean To Grid, but this removes both sides of the double layer leaving > unsightly gaps. > * Writing a vtkGhostPoints array (on nodes) but this seems not to be used > by this filter (or Paraview at all?) > * Writing a vtkGhostLevels array (on elements). This correctly hides all > the ghost elements at the internal boundaries (great!) but still doesn't > let me do everything I want to. For example, the extracted surface looks > right, but the array limits still seem to be based on the max/min of the > external AND internal surfaces, so I suspect the internal ones are just > "hidden from view". > > What's the right way to deal with this? > > Thanks in advance. > > Louie > > _______________________________________________ > Powered by www.kitware.com > > Visit other Kitware open-source projects at > http://www.kitware.com/opensource/opensource.html > > Please keep messages on-topic and check the ParaView Wiki at: > http://paraview.org/Wiki/ParaView > > Search the list archives at: http://markmail.org/search/?q=ParaView > > Follow this link to subscribe/unsubscribe: > http://public.kitware.com/mailman/listinfo/paraview > >
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