# Development

**URL:** https://discourse.paraview.org/c/development/6.md?no_subcategories=false&page=22

[Latest](https://discourse.paraview.org/latest.md) · [Categories](https://discourse.paraview.org/categories.md) · [Tags](https://discourse.paraview.org/tags.md)

**Page:** 23

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## [Assigning attributes to cell as celldata to visualise in cell elements](https://discourse.paraview.org/t/assigning-attributes-to-cell-as-celldata-to-visualise-in-cell-elements/6818)

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**Author:** [@TOTA\_RAKESH\_KUMAR](https://discourse.paraview.org/u/TOTA_RAKESH_KUMAR)\
**Replies:** 1\
**Last updated:** [March 30, 2021, 12:57pm UTC](https://discourse.paraview.org/t/assigning-attributes-to-cell-as-celldata-to-visualise-in-cell-elements/6818 "2021-03-30T12:57:25Z")

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Hi Users, I am doing finite element analysis post processing in paraview.I have node data, displacements, stresses, strains stored at point in point data in .vtu format. This is working fine in paraview where i can visu…

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## [Picture in picture bug in OSPRay Animation Export](https://discourse.paraview.org/t/picture-in-picture-bug-in-ospray-animation-export/2180)

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**Author:** [@mconti](https://discourse.paraview.org/u/mconti)\
**Replies:** 6\
**Last updated:** [October 21, 2020, 12:20pm UTC](https://discourse.paraview.org/t/picture-in-picture-bug-in-ospray-animation-export/2180 "2020-10-21T12:20:22Z")

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Hey all, I’ve been doing a bunch of rendering using the OSPRay Pathtracing engine. One rather annoying bug that I have found is that when exporting an animation, occasionally you will get a smaller version of the image y…

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## [vtkPythonView plugin using a pure python definition](https://discourse.paraview.org/t/vtkpythonview-plugin-using-a-pure-python-definition/6732)

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**Author:** [@Felipe\_Bordeu](https://discourse.paraview.org/u/Felipe_Bordeu)\
**Replies:** 0\
**Last updated:** [March 18, 2021, 8:49am UTC](https://discourse.paraview.org/t/vtkpythonview-plugin-using-a-pure-python-definition/6732 "2021-03-18T08:49:54Z")

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Hello, I use python to prototype some filters (using the new from paraview.util.vtkAlgorithm.VTKPythonAlgorithmBase). Super cool by the way. This enable me to use my python library for some data processing. Now I have …

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## [How to Run a Macro without cleanup python object after running](https://discourse.paraview.org/t/how-to-run-a-macro-without-cleanup-python-object-after-running/4423)

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**Author:** [@ymjia](https://discourse.paraview.org/u/ymjia)\
**Replies:** 1\
**Last updated:** [March 18, 2021, 1:14am UTC](https://discourse.paraview.org/t/how-to-run-a-macro-without-cleanup-python-object-after-running/4423 "2021-03-18T01:14:45Z")

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Hi guys, I am writing a python scripts with a PyQt Dialog, It works well through pythonShell-\>run scripts, then I try to add it as a macro for convenience, It seems that PyQt object get cleanup right after macro run, an…

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## [Plot Over Line enchantments](https://discourse.paraview.org/t/plot-over-line-enchantments/6688)

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**Author:** [@Yohann\_Bearzi](https://discourse.paraview.org/u/Yohann_Bearzi)\
**Replies:** 7\
**Last updated:** [March 17, 2021, 11:21pm UTC](https://discourse.paraview.org/t/plot-over-line-enchantments/6688 "2021-03-17T23:21:45Z")

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The Plot Over Line filter is currently being updated. I am writing this post to gather suggestions by the community on features we could add / change, in addition of what is being implemented. To give some context, prev…

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## [The mesh does not seem to move](https://discourse.paraview.org/t/the-mesh-does-not-seem-to-move/6709)

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**Author:** [@fraonez](https://discourse.paraview.org/u/fraonez)\
**Replies:** 9\
**Last updated:** [March 15, 2021, 8:51pm UTC](https://discourse.paraview.org/t/the-mesh-does-not-seem-to-move/6709 "2021-03-15T20:51:12Z")

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Hi, my name is Joaquin. I am doing a wear test on a mining truck hopper, when the discharge occurs, the graphic representation of the mesh does not seem to move, instead the particles do discharge from the hopper. I ap…

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## [VTK version in latest Paraview](https://discourse.paraview.org/t/vtk-version-in-latest-paraview/6662)

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**Author:** [@siver](https://discourse.paraview.org/u/siver)\
**Replies:** 5\
**Last updated:** [March 10, 2021, 3:29pm UTC](https://discourse.paraview.org/t/vtk-version-in-latest-paraview/6662 "2021-03-10T15:29:47Z")

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Dear devs, Is ParaView 5.9.0 using a VTK version, different from 9.0.1? Thank you. Sincerely, Art

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## [Rename Plot over Intersection Curves](https://discourse.paraview.org/t/rename-plot-over-intersection-curves/6622)

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**Author:** [@wascott](https://discourse.paraview.org/u/wascott)\
**Replies:** 9\
**Last updated:** [March 9, 2021, 2:30am UTC](https://discourse.paraview.org/t/rename-plot-over-intersection-curves/6622 "2021-03-09T02:30:56Z")

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Should we rename Plot over Intersection Curves? The name just doesn’t describe what the filter does. How about Plot over Intersection Surface? Or, Plot over Surface? @Kenneth\_Moreland @cory.quammen @utkarsh.ayachit

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## [Rotation colouring of streamlines](https://discourse.paraview.org/t/rotation-colouring-of-streamlines/6644)

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**Author:** [@Jessie](https://discourse.paraview.org/u/Jessie)\
**Replies:** 2\
**Last updated:** [March 8, 2021, 11:23am UTC](https://discourse.paraview.org/t/rotation-colouring-of-streamlines/6644 "2021-03-08T11:23:59Z")

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Hey all, does anyone know what the rotation colouring on streamlines actually represents? How does is relate to the vorticity and angular velocity? What is the equation ParaView uses to calculate the rotation? Thanks, …

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## [C extensions for Python plugins](https://discourse.paraview.org/t/c-extensions-for-python-plugins/6528)

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**Author:** [@elynch](https://discourse.paraview.org/u/elynch)\
**Replies:** 4\
**Last updated:** [March 5, 2021, 1:35pm UTC](https://discourse.paraview.org/t/c-extensions-for-python-plugins/6528 "2021-03-05T13:35:02Z")

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Is there any way to build a C or C++ extension module that could be imported by a Python ParaView plugin? Alternatively, is there any way to use Cython in a ParaView plugin? Background: I’m building a Python reader p…

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## [Data Hierarchy: How to name blocks](https://discourse.paraview.org/t/data-hierarchy-how-to-name-blocks/6546)

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**Author:** [@utkarsh.ayachit](https://discourse.paraview.org/u/utkarsh.ayachit)\
**Replies:** 5\
**Last updated:** [February 24, 2021, 6:45pm UTC](https://discourse.paraview.org/t/data-hierarchy-how-to-name-blocks/6546 "2021-02-24T18:45:29Z")

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As I continue to work on adding support for data assembly in VTK/ParaView, I encountered a design choice and I figured I’d see what folks prefer. So here’s the background: to make it possible for the application to supp…

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## [Grid edges from invisible surfaces leak through](https://discourse.paraview.org/t/grid-edges-from-invisible-surfaces-leak-through/4581)

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**Author:** [@timofeymukha](https://discourse.paraview.org/u/timofeymukha)\
**Replies:** 7\
**Last updated:** [February 24, 2021, 2:43pm UTC](https://discourse.paraview.org/t/grid-edges-from-invisible-surfaces-leak-through/4581 "2021-02-24T14:43:12Z")

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Dear devs, I’d like to report what I think is bug, introduced, I believe, in 5.7 but prevailing in 5.8. Below is a picture from an OpenFOAM case, with “surface with edges” visualization turned on. We are looking at the…

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## [Catalyst compilation in ParaView 5.9 fails on Windows](https://discourse.paraview.org/t/catalyst-compilation-in-paraview-5-9-fails-on-windows/6505)

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**Author:** [@PetiteViking](https://discourse.paraview.org/u/PetiteViking)\
**Replies:** 2\
**Last updated:** [February 24, 2021, 11:30am UTC](https://discourse.paraview.org/t/catalyst-compilation-in-paraview-5-9-fails-on-windows/6505 "2021-02-24T11:30:45Z")

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Hi, I am trying to compile ParaView on my Windows machine and get an error from Catalyst’s dummy project. Compiling the same code on my Linux machine works without hickups. Here’s what I am working with: Microsoft Vi…

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## [More example datasets](https://discourse.paraview.org/t/more-example-datasets/6516)

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**Author:** [@wascott](https://discourse.paraview.org/u/wascott)\
**Replies:** 1\
**Last updated:** [February 22, 2021, 2:37pm UTC](https://discourse.paraview.org/t/more-example-datasets/6516 "2021-02-22T14:37:12Z")

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I am starting to design/create a set of new example datasets for ParaView. These include vtk legacy and xml datasets. So, a question. Currently, I have EnSight .case, Exodus, and varying flavors of VTK. What other da…

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## [\--mesa seems broken in 5.6.1](https://discourse.paraview.org/t/mesa-seems-broken-in-5-6-1/2357)

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**Author:** [@ftoth](https://discourse.paraview.org/u/ftoth)\
**Replies:** 6\
**Last updated:** [February 20, 2021, 1:21pm UTC](https://discourse.paraview.org/t/mesa-seems-broken-in-5-6-1/2357 "2021-02-20T13:21:33Z")

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Hi, After upgrading to 5.6.1 we get crashes with $ paraview --mesa-llvm : CommandLine Error: Option ‘help-list’ registered more than once! LLVM ERROR: inconsistency in registered CommandLine options We’re using me…

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## [Enabling C++ 17/20 for a plugin](https://discourse.paraview.org/t/enabling-c-17-20-for-a-plugin/6498)

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**Author:** [@PetiteViking](https://discourse.paraview.org/u/PetiteViking)\
**Replies:** 3\
**Last updated:** [February 18, 2021, 3:21pm UTC](https://discourse.paraview.org/t/enabling-c-17-20-for-a-plugin/6498 "2021-02-18T15:21:26Z")

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Hi, does anyone have experience with setting a more modern C++ standard for their plugin to compile with ParaView? I added set\_property(TARGET MyTarget PROPERTY CXX\_STANDARD 17) to the CMakeLists.txt and in Visual Stud…

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## [tuning of server-manager panel layouts?](https://discourse.paraview.org/t/tuning-of-server-manager-panel-layouts/6484)

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**Author:** [@olesenm](https://discourse.paraview.org/u/olesenm)\
**Replies:** 2\
**Last updated:** [February 17, 2021, 1:48pm UTC](https://discourse.paraview.org/t/tuning-of-server-manager-panel-layouts/6484 "2021-02-17T13:48:03Z")

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For a custom reader plugin I have a custom pqPropertyWidget that I currently only using to provide better layout of my items. Instead of a somewhat long vertical list of checkboxes and losing lots of vertical screen real…

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## [Query Selection not captured in Python state file](https://discourse.paraview.org/t/query-selection-not-captured-in-python-state-file/6182)

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**Author:** [@theodorebaltis](https://discourse.paraview.org/u/theodorebaltis)\
**Replies:** 1\
**Last updated:** [February 12, 2021, 10:59pm UTC](https://discourse.paraview.org/t/query-selection-not-captured-in-python-state-file/6182 "2021-02-12T22:59:33Z")

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Tested with 5.9.0 RC3 Windows MPI version. To reproduce, run the following as a macro or load as state file (update the save filename). Look at the resulting file. from paraview.simple import \* sphere = Sphere() Quer…

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## [macOS: linking application with ParaView libraries and NOT depending on DYLD\_LIBRARY\_PATH](https://discourse.paraview.org/t/macos-linking-application-with-paraview-libraries-and-not-depending-on-dyld-library-path/6413)

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**Author:** [@DrRoot](https://discourse.paraview.org/u/DrRoot)\
**Replies:** 11\
**Last updated:** [February 8, 2021, 7:53pm UTC](https://discourse.paraview.org/t/macos-linking-application-with-paraview-libraries-and-not-depending-on-dyld-library-path/6413 "2021-02-08T19:53:17Z")

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Hi, on macOS ParaView libs are not yet build with @rpath but with @executable\_path as install path. How is one to link these libraries in an application without having to depend on DYLD\_LIBRARY\_PATH. Depending on DYLD\_L…

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## [Building Plugin for 5.9 - boost dependecies](https://discourse.paraview.org/t/building-plugin-for-5-9-boost-dependecies/6408)

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**Author:** [@ftoth](https://discourse.paraview.org/u/ftoth)\
**Replies:** 10\
**Last updated:** [February 8, 2021, 7:04pm UTC](https://discourse.paraview.org/t/building-plugin-for-5-9-boost-dependecies/6408 "2021-02-08T19:04:56Z")

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Hi, I’m trying to build my plugin for paraview 5.9 using the excellent paraview-plugin-builder. The plugin depends on boost libraries. In 5.8.1 my paraview.plugin contained REQUIRES\_MODULES ParaView::Core VTK::Co…

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## [In one same filter, hide Enumeration Entries of a property based on another property value](https://discourse.paraview.org/t/in-one-same-filter-hide-enumeration-entries-of-a-property-based-on-another-property-value/6409)

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**Author:** [@HollowSun0](https://discourse.paraview.org/u/HollowSun0)\
**Replies:** 1\
**Last updated:** [February 8, 2021, 9:37am UTC](https://discourse.paraview.org/t/in-one-same-filter-hide-enumeration-entries-of-a-property-based-on-another-property-value/6409 "2021-02-08T09:37:43Z")

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Hi there! I’ve been searching for a way to hide an entry in an enumeration domain of property A when property B is false, for example. Is there any way to do this using pure xml? Thank you! Patrick Laurin

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## [Improvements coming to the Python Editor](https://discourse.paraview.org/t/improvements-coming-to-the-python-editor/6389)

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**Author:** [@mwestphal](https://discourse.paraview.org/u/mwestphal)\
**Replies:** 4\
**Last updated:** [February 8, 2021, 9:20am UTC](https://discourse.paraview.org/t/improvements-coming-to-the-python-editor/6389 "2021-02-08T09:20:54Z")

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There are improvements coming to the Python Editor, some have already been merged and other are on the way. Already merged: Line numbers Undo/Redo support Faster syntax highlighting Access via the Tools menu All aroun…

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## [ParaView plugin project structure](https://discourse.paraview.org/t/paraview-plugin-project-structure/6398)

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**Author:** [@PetiteViking](https://discourse.paraview.org/u/PetiteViking)\
**Replies:** 4\
**Last updated:** [February 5, 2021, 2:38pm UTC](https://discourse.paraview.org/t/paraview-plugin-project-structure/6398 "2021-02-05T14:38:25Z")

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Hi, I am currently trying to make the switch from Inviwo to Paraview but the Plugin/module structure seems to elude me. The project structure I have so far looks like as shown below. I have more filters but for the sak…

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## [Hide output in ServerManagerConfiguration](https://discourse.paraview.org/t/hide-output-in-servermanagerconfiguration/6348)

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**Author:** [@RR84](https://discourse.paraview.org/u/RR84)\
**Replies:** 2\
**Last updated:** [February 3, 2021, 7:53pm UTC](https://discourse.paraview.org/t/hide-output-in-servermanagerconfiguration/6348 "2021-02-03T19:53:18Z")

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Is it possible to hide an Output from a SourceProxy? I want to hide the third output of my filter.

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## [Node Editor](https://discourse.paraview.org/t/node-editor/5364)

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**Author:** [@Jonas.Lukasczyk](https://discourse.paraview.org/u/Jonas.Lukasczyk)\
**Replies:** 21\
**Last updated:** [February 3, 2021, 6:21pm UTC](https://discourse.paraview.org/t/node-editor/5364 "2021-02-03T18:21:09Z")

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Hi everyone, I put together a node editor prototype that can be installed as a PlugIn: It is by far not feature complete, but it now reached a state where I wanted to share this project with the community to discuss …

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## [How to implement right-click context menu in paraview plugin way](https://discourse.paraview.org/t/how-to-implement-right-click-context-menu-in-paraview-plugin-way/1880)

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**Author:** [@sharon](https://discourse.paraview.org/u/sharon)\
**Replies:** 18\
**Last updated:** [January 30, 2021, 3:06am UTC](https://discourse.paraview.org/t/how-to-implement-right-click-context-menu-in-paraview-plugin-way/1880 "2021-01-30T03:06:11Z")

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Dear Experts, I want to implement my own right-click context menu and hide paraview default one in paraview plugin way. I read some paraview source code, I found I can create similar class like pqPipelineContextMenuBe…

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## [Paraview UI hangs/glitches out with 10 million point 2D scatter plot](https://discourse.paraview.org/t/paraview-ui-hangs-glitches-out-with-10-million-point-2d-scatter-plot/6340)

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**Author:** [@cirosantilli](https://discourse.paraview.org/u/cirosantilli)\
**Replies:** 1\
**Last updated:** [January 29, 2021, 10:15am UTC](https://discourse.paraview.org/t/paraview-ui-hangs-glitches-out-with-10-million-point-2d-scatter-plot/6340 "2021-01-29T10:15:20Z")

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Hi there, I’ve stumbled virtually upon @mwestphal and he said this might be worth sending a message here about it, so here it is. The exact data set and use case are described at: https://stackoverflow.com/questions/585…

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## [View interactivity in pvpython](https://discourse.paraview.org/t/view-interactivity-in-pvpython/6305)

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**Author:** [@Hugo](https://discourse.paraview.org/u/Hugo)\
**Replies:** 4\
**Last updated:** [January 28, 2021, 2:33pm UTC](https://discourse.paraview.org/t/view-interactivity-in-pvpython/6305 "2021-01-28T14:33:00Z")

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Hello, I’m a huge fan of paraview (so many possibilities). I’ve developped a small user interface in python to simplify the use of paraview for my colleagues. It’s working pretty well but i still haven’t found out : …

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## [Geometry rebuilding at every time step?](https://discourse.paraview.org/t/geometry-rebuilding-at-every-time-step/6280)

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**Author:** [@florian.ziemen](https://discourse.paraview.org/u/florian.ziemen)\
**Replies:** 1\
**Last updated:** [January 22, 2021, 3:34pm UTC](https://discourse.paraview.org/t/geometry-rebuilding-at-every-time-step/6280 "2021-01-22T15:34:57Z")

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For most NetCDF files the geometry is not time dependent (just the values in the arrays are). Is there a simple way to avoid rebuilding the geometry every time RequestData is called for the next time step? (I’m looking …

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## [RPATH and LD\_LIBRARY\_PATH when using ParaView; conflicts with libraries from other application](https://discourse.paraview.org/t/rpath-and-ld-library-path-when-using-paraview-conflicts-with-libraries-from-other-application/6259)

<div class="topic-metadata">

**Author:** [@menno](https://discourse.paraview.org/u/menno)\
**Replies:** 3\
**Last updated:** [January 22, 2021, 2:59pm UTC](https://discourse.paraview.org/t/rpath-and-ld-library-path-when-using-paraview-conflicts-with-libraries-from-other-application/6259 "2021-01-22T14:59:29Z")

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I’m trying to understand what is going on with the following: we have a simulation code that uses specially-built paraview libraries for in-situ processing. The executable finds its libraries using LD\_LIBRARY\_PATH. On t…

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