# Development

**URL:** https://discourse.paraview.org/c/development/6.md?no_subcategories=false&page=9

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

**Page:** 10

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## [Problem clipping a slice with a cylinder](https://discourse.paraview.org/t/problem-clipping-a-slice-with-a-cylinder/10208)

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**Author:** [@rudolf.hellmuth](https://discourse.paraview.org/u/rudolf.hellmuth)\
**Replies:** 3\
**Last updated:** [August 30, 2022, 12:38am UTC](https://discourse.paraview.org/t/problem-clipping-a-slice-with-a-cylinder/10208 "2022-08-30T00:38:05Z")

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Hi, I have a curved pipe with a sharp bend, and I want to integrate quantitates on a cross-section. In previous versions of ParaView, I used to make a slice on the cross-section, followed by clipping the plane with a sh…

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## [Plugin for voxel-like representation](https://discourse.paraview.org/t/plugin-for-voxel-like-representation/14036)

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**Author:** [@jhdevworks](https://discourse.paraview.org/u/jhdevworks)\
**Replies:** 0\
**Last updated:** [February 27, 2024, 3:13pm UTC](https://discourse.paraview.org/t/plugin-for-voxel-like-representation/14036 "2024-02-27T15:13:03Z")

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Hi all, I am working on a plugin to load and visualize a voxel-like structure called Block, which uses on-the-fly decompression to reduce memory footprint (compared to vtkImageData). I already have a class called vtkBlo…

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## [Bug with Temporal Interpolator filter](https://discourse.paraview.org/t/bug-with-temporal-interpolator-filter/14031)

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**Author:** [@maximerenault](https://discourse.paraview.org/u/maximerenault)\
**Replies:** 7\
**Last updated:** [February 27, 2024, 1:52pm UTC](https://discourse.paraview.org/t/bug-with-temporal-interpolator-filter/14031 "2024-02-27T13:52:24Z")

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Hi, I already made a topic in Support thinking it could be solved easily, but I investigated a bit more and it seems to be an issue with the Temporal Interpolator filter when reading a HDF5 file (through xdmf). After a …

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## [Option's not working on PortForwarding Tag](https://discourse.paraview.org/t/options-not-working-on-portforwarding-tag/14011)

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**Author:** [@gpuligundla](https://discourse.paraview.org/u/gpuligundla)\
**Replies:** 3\
**Last updated:** [February 26, 2024, 3:28pm UTC](https://discourse.paraview.org/t/options-not-working-on-portforwarding-tag/14011 "2024-02-26T15:28:27Z")

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Hi, I’m trying to create a server.pvsc for my Client/Server Communication through Windows. However, I can’t set a custom port for local Port forwarding. I’m using the below \<Option name="LOCAL\_PORT" label="Client Port…

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## [Apply is not active](https://discourse.paraview.org/t/apply-is-not-active/14024)

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**Author:** [@joint](https://discourse.paraview.org/u/joint)\
**Replies:** 5\
**Last updated:** [February 26, 2024, 3:14pm UTC](https://discourse.paraview.org/t/apply-is-not-active/14024 "2024-02-26T15:14:33Z")

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Hello dear Paraview developers! I have a filter with both a server side and a custom widget. Custom widget uses client-server wrappings to call a widget’s function which itself calls python to select some points. Becau…

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## [How to get access to pqPropertiesPanel ?](https://discourse.paraview.org/t/how-to-get-access-to-pqpropertiespanel/14019)

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**Author:** [@joint](https://discourse.paraview.org/u/joint)\
**Replies:** 14\
**Last updated:** [February 26, 2024, 9:16am UTC](https://discourse.paraview.org/t/how-to-get-access-to-pqpropertiespanel/14019 "2024-02-26T09:16:51Z")

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Hello dear Paraview developers! Could you please help me finding how to access pqPropertiesPanel from within a filter in c++ Thank u!

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## [Names and tooltip for ParaView macro](https://discourse.paraview.org/t/names-and-tooltip-for-paraview-macro/13954)

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**Author:** [@jaswantp](https://discourse.paraview.org/u/jaswantp)\
**Replies:** 8\
**Last updated:** [February 23, 2024, 8:18am UTC](https://discourse.paraview.org/t/names-and-tooltip-for-paraview-macro/13954 "2024-02-23T08:18:42Z")

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We’re planning to extend macros with more information: Display a tooltip text when mouse hovers above the macro icon in the user interface. Add ability to name macros and display the name in macro manager dialog. I…

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## [SteamVR API](https://discourse.paraview.org/t/steamvr-api/13974)

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**Author:** [@wgharper](https://discourse.paraview.org/u/wgharper)\
**Replies:** 5\
**Last updated:** [February 21, 2024, 10:20pm UTC](https://discourse.paraview.org/t/steamvr-api/13974 "2024-02-21T22:20:13Z")

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Hi! I’m a student working on a project for CERI labs. They have a couple of VR scenes setup in ParaView using OpenVR and SteamVR. We have been asked to implement haptic feedback into the controllers during the scenes. On…

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## [Tesselate filter on polygon indicates no parametrization](https://discourse.paraview.org/t/tesselate-filter-on-polygon-indicates-no-parametrization/13966)

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**Author:** [@cessenat](https://discourse.paraview.org/u/cessenat)\
**Replies:** 9\
**Last updated:** [February 21, 2024, 5:24pm UTC](https://discourse.paraview.org/t/tesselate-filter-on-polygon-indicates-no-parametrization/13966 "2024-02-21T17:24:40Z")

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The “Tesselate” filter applied on “VTK\_POLYGON” indicates “Input dataset has cells without parametization”. Example file: # vtk DataFile Version 3.0 Generated by Hand ASCII DATASET UNSTRUCTURED\_GRID POINTS 14 dou…

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## [PARAVIEW\_USE\_EXTERNAL\_VTK broken](https://discourse.paraview.org/t/paraview-use-external-vtk-broken/13956)

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**Author:** [@biddisco](https://discourse.paraview.org/u/biddisco)\
**Replies:** 3\
**Last updated:** [February 16, 2024, 9:00pm UTC](https://discourse.paraview.org/t/paraview-use-external-vtk-broken/13956 "2024-02-16T21:00:57Z")

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I’m setting up builds of paraview on a new grace-hopper machine and having some problems. The build system is built around spack installations of packages for everything. In order to use vtk-m, I need to use the latest…

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## [ParaView 5.12.0-RC3 release underway](https://discourse.paraview.org/t/paraview-5-12-0-rc3-release-underway/13896)

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**Author:** [@cory.quammen](https://discourse.paraview.org/u/cory.quammen)\
**Replies:** 1\
**Last updated:** [February 13, 2024, 7:33pm UTC](https://discourse.paraview.org/t/paraview-5-12-0-rc3-release-underway/13896 "2024-02-13T19:33:07Z")

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The ParaView 5.12.0-RC3 release process is underway. Please do not merge anything to ParaView’s release branch of VTK’s paraview/release branch until this process is complete. Thank you.

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## [Why does Python script cause the filter to pass all the stages?](https://discourse.paraview.org/t/why-does-python-script-cause-the-filter-to-pass-all-the-stages/13926)

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**Author:** [@joint](https://discourse.paraview.org/u/joint)\
**Replies:** 0\
**Last updated:** [February 13, 2024, 12:41pm UTC](https://discourse.paraview.org/t/why-does-python-script-cause-the-filter-to-pass-all-the-stages/13926 "2024-02-13T12:41:51Z")

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Hello dear Paraview Developers? I have faced a very intriguing problem I call from my custom filter such a code vtkPythonInteractiveInterpreter\* PythonScript; PythonScript = PythonScript-\>New(); PythonScript-\>Pu…

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## [How to make Selection from C++ visible?](https://discourse.paraview.org/t/how-to-make-selection-from-c-visible/13923)

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**Author:** [@joint](https://discourse.paraview.org/u/joint)\
**Replies:** 0\
**Last updated:** [February 13, 2024, 12:08pm UTC](https://discourse.paraview.org/t/how-to-make-selection-from-c-visible/13923 "2024-02-13T12:08:13Z")

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Hello dear Paraview developers! I have used the following code to select the points by IDs from the custom widget vtkSelection\* sel = vtkSelection::New(); vtkNew\<vtkIdTypeArray\> ids; ids-\>SetNumberOfCompone…

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## [Managing proxies from C++](https://discourse.paraview.org/t/managing-proxies-from-c/13919)

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**Author:** [@joint](https://discourse.paraview.org/u/joint)\
**Replies:** 0\
**Last updated:** [February 13, 2024, 9:09am UTC](https://discourse.paraview.org/t/managing-proxies-from-c/13919 "2024-02-13T09:09:04Z")

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Hello dear Paraview developers! Could you please explain me, why such a snippet does not work? vtkSMSession\* session = vtkSMSession::New(); vtkSMSessionProxyManager\* pxm = session-\>GetSessionProxyManager(); vtkSmartPo…

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## [how to use vtkJSONSceneExporter to export data to a json file and some .gz compressed files](https://discourse.paraview.org/t/how-to-use-vtkjsonsceneexporter-to-export-data-to-a-json-file-and-some-gz-compressed-files/1673)

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**Author:** [@jigetage](https://discourse.paraview.org/u/jigetage)\
**Replies:** 2\
**Last updated:** [February 13, 2024, 3:05am UTC](https://discourse.paraview.org/t/how-to-use-vtkjsonsceneexporter-to-export-data-to-a-json-file-and-some-gz-compressed-files/1673 "2024-02-13T03:05:46Z")

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I used vtkJSONSceneExporter in vtk c++ library to export data. And the whole codes are below: vtkSmartPointer exporter = vtkSmartPointer::New(); exporter-\>SetFileName("./Scenes"); exporter-\>SetInput(m\_renderWindow); …

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## [Analog of pvtu file for vtkhdf](https://discourse.paraview.org/t/analog-of-pvtu-file-for-vtkhdf/13869)

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**Author:** [@OsKnoth](https://discourse.paraview.org/u/OsKnoth)\
**Replies:** 12\
**Last updated:** [February 12, 2024, 11:09am UTC](https://discourse.paraview.org/t/analog-of-pvtu-file-for-vtkhdf/13869 "2024-02-12T11:09:00Z")

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I have alraedy distributed vtkhdf files. How can I read in this via one pvtu like file. Oswald

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## [Example on how to use proxies](https://discourse.paraview.org/t/example-on-how-to-use-proxies/13902)

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**Author:** [@joint](https://discourse.paraview.org/u/joint)\
**Replies:** 12\
**Last updated:** [February 9, 2024, 1:51pm UTC](https://discourse.paraview.org/t/example-on-how-to-use-proxies/13902 "2024-02-09T13:51:52Z")

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Hello, dear Paraview developers! Could you please give me an example on how to use proxies from C++ to manipulate vtk objects? I was not able to find a credible and simple example Best regards, Mike

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## [Invoking sphere creation with C++ code only](https://discourse.paraview.org/t/invoking-sphere-creation-with-c-code-only/13905)

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**Author:** [@joint](https://discourse.paraview.org/u/joint)\
**Replies:** 0\
**Last updated:** [February 9, 2024, 12:57pm UTC](https://discourse.paraview.org/t/invoking-sphere-creation-with-c-code-only/13905 "2024-02-09T12:57:19Z")

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Hello, dear Paraview developers! vtkSMSession\* session = vtkSMSession::New(); vtkSMSessionProxyManager\* pxm = session-\>GetSessionProxyManager(); vtkSMProxy\* proxy = pxm-\>NewProxy("sources", "SphereSource"); vtk…

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## [How to use SelectionSourceProxy?](https://discourse.paraview.org/t/how-to-use-selectionsourceproxy/13900)

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**Author:** [@joint](https://discourse.paraview.org/u/joint)\
**Replies:** 3\
**Last updated:** [February 9, 2024, 8:40am UTC](https://discourse.paraview.org/t/how-to-use-selectionsourceproxy/13900 "2024-02-09T08:40:06Z")

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Hello, dear Paraview developers I want to have some points in dataset selected before starting very time-consuming calculations to detect which of the points I want to use in those calculations. I was trying to use thi…

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## [python interface script implementation](https://discourse.paraview.org/t/python-interface-script-implementation/13890)

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**Author:** [@ermore](https://discourse.paraview.org/u/ermore)\
**Replies:** 1\
**Last updated:** [February 8, 2024, 8:41am UTC](https://discourse.paraview.org/t/python-interface-script-implementation/13890 "2024-02-08T08:41:31Z")

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How does paraview make a GUI operation correspond to a python code? I want to know the implementation of this aspect?

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## [Reviving old custom rendering plugin code from pv 4.4](https://discourse.paraview.org/t/reviving-old-custom-rendering-plugin-code-from-pv-4-4/13799)

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**Author:** [@biddisco](https://discourse.paraview.org/u/biddisco)\
**Replies:** 2\
**Last updated:** [February 7, 2024, 2:30pm UTC](https://discourse.paraview.org/t/reviving-old-custom-rendering-plugin-code-from-pv-4-4/13799 "2024-02-07T14:30:48Z")

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Hi all, I’ve not been active with paraview for almost 10 years and I have some custom rendering code that uses vtkPiston with cuda/thrust and a front end that creates a custom representation and painters to draw the scen…

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## [Paraview debug build does not work](https://discourse.paraview.org/t/paraview-debug-build-does-not-work/13816)

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**Author:** [@joint](https://discourse.paraview.org/u/joint)\
**Replies:** 2\
**Last updated:** [February 7, 2024, 2:03pm UTC](https://discourse.paraview.org/t/paraview-debug-build-does-not-work/13816 "2024-02-07T14:03:56Z")

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Calling Python code from Paraview ModuleNotFoundError: No module named ‘\_paraview\_modules\_static’ In Paraview debug build 5.9 What could be the reason?

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## [How to get access to existing vtkSMRenderViewProxy?](https://discourse.paraview.org/t/how-to-get-access-to-existing-vtksmrenderviewproxy/13882)

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**Author:** [@joint](https://discourse.paraview.org/u/joint)\
**Replies:** 7\
**Last updated:** [February 6, 2024, 2:00pm UTC](https://discourse.paraview.org/t/how-to-get-access-to-existing-vtksmrenderviewproxy/13882 "2024-02-06T14:00:55Z")

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Hello dear developers! Could you explain me please, how to get access to vtkSMRenderViewProxy in order to invoke points selection from a custom widget? Best regards

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## [pvtu with polyhedra issue](https://discourse.paraview.org/t/pvtu-with-polyhedra-issue/13858)

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**Author:** [@kirill-terekhov](https://discourse.paraview.org/u/kirill-terekhov)\
**Replies:** 2\
**Last updated:** [February 5, 2024, 2:34pm UTC](https://discourse.paraview.org/t/pvtu-with-polyhedra-issue/13858 "2024-02-05T14:34:34Z")

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The display of polyhedra in Paraview depends on the order of pieces in the pvtu file. In the attached example parallel\_polyhedron.pvtu (754 Bytes), there are 3 hexahedra. In the first piece parallel\_polyhedron\_0.vtu (1.…

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## [How to use vtkSMProperty](https://discourse.paraview.org/t/how-to-use-vtksmproperty/13863)

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**Author:** [@joint](https://discourse.paraview.org/u/joint)\
**Replies:** 0\
**Last updated:** [February 5, 2024, 9:02am UTC](https://discourse.paraview.org/t/how-to-use-vtksmproperty/13863 "2024-02-05T09:02:50Z")

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Hello! Is it true that in order to highlight some points with some color, one should use vtkSMProperty ? (because in plain VTK, one uses vtkProperty for colors ) How to use it, could you give me an example? Thanks

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## [stream tracer with custom fails in parallel](https://discourse.paraview.org/t/stream-tracer-with-custom-fails-in-parallel/672)

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**Author:** [@JKau](https://discourse.paraview.org/u/JKau)\
**Replies:** 7\
**Last updated:** [January 31, 2024, 12:42pm UTC](https://discourse.paraview.org/t/stream-tracer-with-custom-fails-in-parallel/672 "2024-01-31T12:42:37Z")

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Hi, I am trying to create a stream tracer with custom source on a decomposed OpenFOAM case with pvbatch in parallel. The job exits with an MPI Error, see attached logfile. pvbatch.log (1.8 KB) Running pvbatch in serial…

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## [Problem with updating the Animationscene](https://discourse.paraview.org/t/problem-with-updating-the-animationscene/13830)

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**Author:** [@Ibrahim\_Bandi](https://discourse.paraview.org/u/Ibrahim_Bandi)\
**Replies:** 1\
**Last updated:** [January 31, 2024, 9:54am UTC](https://discourse.paraview.org/t/problem-with-updating-the-animationscene/13830 "2024-01-31T09:54:44Z")

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Hello everyone, I am facing a problem with updating my animation scene. I am trying iterate over a number of frames and exporting csv file files but I am just getting csv files with same values, which means the spreadshe…

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## [Python3 Not Found](https://discourse.paraview.org/t/python3-not-found/13733)

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**Author:** [@guillaume\_Peillex](https://discourse.paraview.org/u/guillaume_Peillex)\
**Replies:** 4\
**Last updated:** [January 31, 2024, 7:35am UTC](https://discourse.paraview.org/t/python3-not-found/13733 "2024-01-31T07:35:53Z")

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Hi all, I’am facing a “Could NOT find Python3” problem. I’am building, with Spack, a ParaView Branded Application named Themys. On the machine where the installation occurs there is a Python3.11 version installed but …

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## [How to make use of vtkPVRenderView](https://discourse.paraview.org/t/how-to-make-use-of-vtkpvrenderview/13827)

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**Author:** [@joint](https://discourse.paraview.org/u/joint)\
**Replies:** 0\
**Last updated:** [January 30, 2024, 9:55am UTC](https://discourse.paraview.org/t/how-to-make-use-of-vtkpvrenderview/13827 "2024-01-30T09:55:35Z")

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Hello! I have a plugin which is a class inherited from vtkDatasetAlgorithm I want to Select Points from within the server part of the plugin, how could I achieve that? Could I use vtkPVRenderView to get access to the …

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## [Anatomical structure grabbing, supporting the grabbing of various parts of the model instead of moving it as a whole. Thank you very much](https://discourse.paraview.org/t/anatomical-structure-grabbing-supporting-the-grabbing-of-various-parts-of-the-model-instead-of-moving-it-as-a-whole-thank-you-very-much/13766)

<div class="topic-metadata">

**Author:** [@linhuanfengQ](https://discourse.paraview.org/u/linhuanfengQ)\
**Replies:** 1\
**Last updated:** [January 22, 2024, 2:53pm UTC](https://discourse.paraview.org/t/anatomical-structure-grabbing-supporting-the-grabbing-of-various-parts-of-the-model-instead-of-moving-it-as-a-whole-thank-you-very-much/13766 "2024-01-22T14:53:59Z")

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GitHub - Kitware/glance: Kitware Glance is an open-source web application developed at Kitware for visualizing volumetric images, molecular structures, geometric objects, and point clouds. It is part of the ParaView plat…

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