Re: [Paraview] just an observation--resample with dataset filter
That sounds good to me. Any objections? On Sat, Apr 4, 2009 at 6:40 PM, Jacques Papper jacques.pap...@gmail.com wrote: What about geometry and data ? 2009/4/4 Berk Geveci berk.gev...@kitware.com I like the suggestion of giving better names to the inputs. I have always disliked how confusing Input and Source are. If I remember correctly, it is backwards because I changed it to be more compatible with some other filter, maybe stream tracer? What about Source and Target? Does that make it clear that we are probing the data from the source to the geometry on the target? -berk On Mon, Mar 30, 2009 at 3:16 PM, Stephens, Michael M ERDC-ITL-MS michael.m.steph...@usace.army.mil wrote: in the for what it's worth file: is it just me or does the Resample with Dataset filter in paraview have the Input Source items backwards from the vtkProbe documentation. looking at the Resources/filters.xml it looks backwards there too. the Input is tied to the SetSource command and the Source is tied to the SetInput command. also if anyone is still reading, why not label these with something actually descriptive as Input and Source map to very similar things in most people's heads. how about: Probe Geometry and DataSet to probe feed your head --- the doormouse -m ___ 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 Follow this link to subscribe/unsubscribe: http://www.paraview.org/mailman/listinfo/paraview ___ 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 Follow this link to subscribe/unsubscribe: http://www.paraview.org/mailman/listinfo/paraview ___ 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 Follow this link to subscribe/unsubscribe: http://www.paraview.org/mailman/listinfo/paraview
Re: [Paraview] Delaunay triangulation
This doesn't sound right. Can you post a screenshot (of the whole user interface)? -berk 2009/4/1 Sasha Ukhorskiy ukho...@gmail.com: Dear All, I am a new user of ParaView and have a very basic question on how to visualize the output of the 3D Delaunay triangulation. I am trying to plot a surface traced by a guiding center particle in a planetary magnetic field. I import particle positions (which belong to the surface) as an unstructured grid. Then use the Delauday 3D filter with a non-zero Aplpha parameter (to avoid triangulating distant points which do not belong to the surface) and display the output using solid color Surface representation. As a result I am getting almost what I need. The feature that I am trtying to get rid of is the following: besides shading the triangles with solid color, ParaView also plots all lines/edges from triangulations which clutter the plot. Is there a way to supress the lines or should I be using a different approach for plotting this surface? Thank you very much in advance, -Sasha ___ 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 Follow this link to subscribe/unsubscribe: http://www.paraview.org/mailman/listinfo/paraview ___ 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 Follow this link to subscribe/unsubscribe: http://www.paraview.org/mailman/listinfo/paraview
Re: [Paraview] Stratified Sampling
I am not very familiar with VTK's computational geometry algorithms but to my knowledge we don't have a filter that can do this. I am cross-posting to VTK's list in case someone there has a suggestion. That algorithm is pretty cool by the way. Maybe you can contact the original other and see if he is interested in releasing his source code? -berk 2009/4/1 David Doria daviddo...@gmail.com: I would like to get something like stratified sampling: http://www.tecgraf.puc-rio.br/~diego/academic/phd/597d/sample/ I have a mesh which has some fine detail that requires a high vertex density and some coarse detail that requires a low vertex density. What I would like to is achieve a uniform vertex density. If I do a subdivision, it will make the fine detail even finer, which is completely un-necessary. What I want is either to resample the coarse detail at the same resolution as the fine detail and leave the fine detail alone. Or, I could specify a vertex spacing and make the fine detail less fine and the coarse detail more fine. Does that make sense? Does Paraview or VTK have any tools to do something like this? Thanks, David ___ 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 Follow this link to subscribe/unsubscribe: http://www.paraview.org/mailman/listinfo/paraview ___ 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 Follow this link to subscribe/unsubscribe: http://www.paraview.org/mailman/listinfo/paraview
Re: [Paraview] extract surface of multiblock mesh
Berk, Thanks for correcting me. I'll try adding the vtkGhostLevels to the XDMF and see how that goes. Chris On Apr 4, 2009, at 2:50 PM, Berk Geveci wrote: The right way to deal with this situation is to mark the ghost cells as ghost. If you create a cell array called vtkGhostLevels and assign 0 to inside cells and 1 to ghost cells, you should not need MergeBlocks or CleanToGrid. Note that this array has to be of type unsigned char. There are actual benefits to keeping ghost levels since some algorithms will produce better results. -berk On Thu, Apr 2, 2009 at 6:37 PM, Chris Kees christopher.e.k...@usace.army.mil wrote: I turned off the overlapping domain decomposition (ghost cells) for a simple problem and the sequence MergeBlocks-CleantoGrid-ExtractSurface-Clip shows just the physical boundary of the problem (clipped open so you can see inside). Also volume visualization and streamline calculation works with no processor boundary artifacts. From what I understand, there are no filters in paraview or abstractions in the XDMF data model at this time that will allow paraview to read in overlapping blocks and really make use of the ghost cells correctly. For now truncating our output to only owned elements will solve our problems. Thanks again for the help. Chris On Mar 30, 2009, at 2:06 PM, Chris Kees wrote: Thanks for the help. I also tried suggestions from Paul, Ken, and Berk, but it does seem that I'm stuck right now unless I provide ParaView with more information. Since streamlines are computed correctly on the current multiblock mesh I just generated the mesh on a single processor and used ExtractSurface-Clip on that mesh to visualize the geometry around the streamlines from the multiblock grid. On the first method: Each of my UnstructuredGrids in the Multiblock Grid is a subdomain in an overlapping decomposition of the domain. Each of the subdomains has several elements of overlap (the layer of ghost cells is more than one element thick). Presumably the streamline generation works now on the multiblock grid because the overlap is loaded into ParaView. Is there a way I can just set a cell-centered attributed to identify the ghost cells so that surface extraction and volume visualization will work too? Currently volume visualization of the multiblock grid shows only a single subdomain and volume visualization after MergeBlocks shows the whole domain but with overlap regions being more opaque. On your other method, we have both the external boundary mesh and a pre-mesh polygonal representation of the boundaries available in the simulator. You are suggesting that I just dump one of those to a valid ParaView format as well, is that correct? Chris On Mar 30, 2009, at 9:14 AM, Jean Favre wrote: Chris Kees wrote: So far I've tried MergeBlocks-ExtractSurface-FeatureEdges- Clip and various permutations that I've seen in previous posts and the wiki, but I always end up with the surfaces on the interior of the tank as if it still sees each subdomain as a closed surface. In fact, it seems to me that ParaView does the best it can. Your unstructured mesh is partitioned in 512 pieces and [presumably], you did not specify ghost-cells at the partition boundaries. Without ghost-cells, ParaView has no information to help decide whether an outside face looks towards the outside world, or to another partition. I don't think any combination of filters would help you. Removing duplicate points may only remove duplicate fake boundaries, but these fake boundaries must be removed all together. I use two methods to achieve what you want. Ghost-cells, or another multi-piece object containing the different boundary types (solid, symmetries, inflow, outflow, etc) stored as vtkPolyData. These are read in from the models on disk. Jean -- Swiss National Supercomputing Center ___ 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 Follow this link to subscribe/unsubscribe: http://www.paraview.org/mailman/listinfo/paraview ___ 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 Follow this link to subscribe/unsubscribe: http://www.paraview.org/mailman/listinfo/paraview ___ 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 Follow this link to subscribe/unsubscribe:
