# Top

**URL:** https://discourse.paraview.org/top.md?page=18&period=all

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**Page:** 19

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## [The issue of temperature at the cross-section of particles](https://discourse.paraview.org/t/the-issue-of-temperature-at-the-cross-section-of-particles/14398)

<div class="topic-metadata">

**Author:** [@Guanlong](https://discourse.paraview.org/u/Guanlong)\
**Replies:** 23\
**Last updated:** [February 18, 2025, 10:16am UTC](https://discourse.paraview.org/t/the-issue-of-temperature-at-the-cross-section-of-particles/14398 "2025-02-18T10:16:04Z")

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Hello researchers, I have a group of VTK files about particle information here. I would like to obtain the temperature changes inside the particles, that is, the temperature changes at the particle cross-section. How sho…

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## [Display of Contour from a 2D CSV File](https://discourse.paraview.org/t/display-of-contour-from-a-2d-csv-file/15823)

<div class="topic-metadata">

**Author:** [@wqGeng](https://discourse.paraview.org/u/wqGeng)\
**Replies:** 14\
**Last updated:** [December 16, 2024, 8:51am UTC](https://discourse.paraview.org/t/display-of-contour-from-a-2d-csv-file/15823 "2024-12-16T08:51:23Z")

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I write 2D CSV files from Fluent out to create animation videos in ParaView. I convert the CSV files using Table to Points and then see just points, not interpolated contours. In case I save the 2D data in Tecplot format…

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## [OpenFOAM Int64 Catalyst is not loading properly because of a missing symbol](https://discourse.paraview.org/t/openfoam-int64-catalyst-is-not-loading-properly-because-of-a-missing-symbol/9861)

<div class="topic-metadata">

**Author:** [@robertsawko](https://discourse.paraview.org/u/robertsawko)\
**Replies:** 9\
**Last updated:** [June 24, 2022, 10:47am UTC](https://discourse.paraview.org/t/openfoam-int64-catalyst-is-not-loading-properly-because-of-a-missing-symbol/9861 "2022-06-24T10:47:42Z")

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Hello, I am really sorry for this desperate plea, but I’d like to ask @utkarsh.ayachit and @olesenm for some help. I’ve been enjoying Catalyst V2 in ESI OpenFOAM for a while now, but now I am finally getting to a more s…

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## [Cannot connect to ParaView server](https://discourse.paraview.org/t/cannot-connect-to-paraview-server/14517)

<div class="topic-metadata">

**Author:** [@Ardalan\_Javadi](https://discourse.paraview.org/u/Ardalan_Javadi)\
**Replies:** 9\
**Last updated:** [April 29, 2024, 5:08pm UTC](https://discourse.paraview.org/t/cannot-connect-to-paraview-server/14517 "2024-04-29T17:08:51Z")

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Hello, I receive similar error when connecting! Socket error in call to connect. Connection refused. ( 12.832s) \[paraview \] vtkClientSocket.cxx:51 ERR| vtkClientSocket (0x13b3800): Failed to connect to …

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## [Adding an output option to pvpython to show necessary environment variables for importing ParaView into python](https://discourse.paraview.org/t/adding-an-output-option-to-pvpython-to-show-necessary-environment-variables-for-importing-paraview-into-python/11619)

<div class="topic-metadata">

**Author:** [@Andy\_Bauer](https://discourse.paraview.org/u/Andy_Bauer)\
**Replies:** 10\
**Last updated:** [April 25, 2023, 3:14pm UTC](https://discourse.paraview.org/t/adding-an-output-option-to-pvpython-to-show-necessary-environment-variables-for-importing-paraview-into-python/11619 "2023-04-25T15:14:05Z")

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Hi, I’m working on some testing functionality for code that does some ParaView processing through Python. This is for a ParaView install from the download page and not a ParaView that I built myself. I’m not sure this m…

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## [Paraview on Win 11, cannot find a reader for VTU](https://discourse.paraview.org/t/paraview-on-win-11-cannot-find-a-reader-for-vtu/13226)

<div class="topic-metadata">

**Author:** [@zj519](https://discourse.paraview.org/u/zj519)\
**Replies:** 18\
**Last updated:** [November 11, 2023, 6:29pm UTC](https://discourse.paraview.org/t/paraview-on-win-11-cannot-find-a-reader-for-vtu/13226 "2023-11-11T18:29:47Z")

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Hi ParaView community, I have the latest version of ParaView installed on win 11, and it says ‘unable to find a reader for VTU file’. My files are in VTU format. Can you help me with this please?

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## [Build Paraview-5.11.0 with Legacy Catalyst (v1)](https://discourse.paraview.org/t/build-paraview-5-11-0-with-legacy-catalyst-v1/11315)

<div class="topic-metadata">

**Author:** [@m.novak](https://discourse.paraview.org/u/m.novak)\
**Replies:** 10\
**Last updated:** [February 6, 2023, 11:51am UTC](https://discourse.paraview.org/t/build-paraview-5-11-0-with-legacy-catalyst-v1/11315 "2023-02-06T11:51:34Z")

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Dear support. I am trying to build paraview-5.11.0 with the latest spack release. Is it possible to configure it in a way in which Legacy catalyst will get built? I checked release notes and in 5.9.0 it is stated lega…

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## [Why do I always get stuck installing more than 340 packages when compiling ParaView on Ubuntu 20](https://discourse.paraview.org/t/why-do-i-always-get-stuck-installing-more-than-340-packages-when-compiling-paraview-on-ubuntu-20/7800)

<div class="topic-metadata">

**Author:** [@aquanaut](https://discourse.paraview.org/u/aquanaut)\
**Replies:** 10\
**Last updated:** [August 11, 2021, 10:30am UTC](https://discourse.paraview.org/t/why-do-i-always-get-stuck-installing-more-than-340-packages-when-compiling-paraview-on-ubuntu-20/7800 "2021-08-11T10:30:36Z")

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like the title.

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## [cannot compile iparaview-kernel](https://discourse.paraview.org/t/cannot-compile-iparaview-kernel/8902)

<div class="topic-metadata">

**Author:** [@jfavre](https://discourse.paraview.org/u/jfavre)\
**Replies:** 9\
**Last updated:** [February 7, 2022, 10:25am UTC](https://discourse.paraview.org/t/cannot-compile-iparaview-kernel/8902 "2022-02-07T10:25:17Z")

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I have PV5.10.0 compiled from source, with Qt for my laptop. I cannot configure iparaview-kernel: CMake Error at /local/apps/ParaView/5.10/lib/cmake/paraview-5.10/paraview-config.cmake:163 (list): list sub-command REMO…

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## [Slice Animations Not Working in 6.0](https://discourse.paraview.org/t/slice-animations-not-working-in-6-0/16810)

<div class="topic-metadata">

**Author:** [@tpalloj](https://discourse.paraview.org/u/tpalloj)\
**Replies:** 20\
**Last updated:** [August 25, 2025, 3:40pm UTC](https://discourse.paraview.org/t/slice-animations-not-working-in-6-0/16810 "2025-08-25T15:40:00Z")

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I recently upgraded from 5.13.3 to 6.0 and the slice filters I was using to create animations are no longer working. The way I use the tool is I use the slice to create a X/Y/Z plane in my domain, then I create an anima…

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## [Mirroring streamlines and contours](https://discourse.paraview.org/t/mirroring-streamlines-and-contours/16769)

<div class="topic-metadata">

**Author:** [@scabo](https://discourse.paraview.org/u/scabo)\
**Replies:** 14\
**Last updated:** [September 11, 2025, 1:50pm UTC](https://discourse.paraview.org/t/mirroring-streamlines-and-contours/16769 "2025-09-11T13:50:26Z")

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Hi I have drawn streamlines on one half of a circular plane. by seeding a line. Now I want to mirror it w.r.t the vertical symmetric axis. How can i do it? thanks

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## [How to return NaN for the probe located outside the domain?](https://discourse.paraview.org/t/how-to-return-nan-for-the-probe-located-outside-the-domain/7345)

<div class="topic-metadata">

**Author:** [@Aroma](https://discourse.paraview.org/u/Aroma)\
**Replies:** 9\
**Last updated:** [June 7, 2021, 5:58pm UTC](https://discourse.paraview.org/t/how-to-return-nan-for-the-probe-located-outside-the-domain/7345 "2021-06-07T17:58:32Z")

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Hi, I am using Paraview functions to read results of various point in my 2D simulation result (vtk format). However, it returns 0 if I give a point outside the domain. Is it possible to return NaN for the points outsid…

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## [Paraview super build failed](https://discourse.paraview.org/t/paraview-super-build-failed/14073)

<div class="topic-metadata">

**Author:** [@gpuligundla](https://discourse.paraview.org/u/gpuligundla)\
**Replies:** 9\
**Last updated:** [April 1, 2024, 8:51pm UTC](https://discourse.paraview.org/t/paraview-super-build-failed/14073 "2024-04-01T20:51:14Z")

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Hi, I’m using Paraview super build.But my build setup fails with below error FAILED: VTK/ThirdParty/libproj/vtklibproj/src/CMakeFiles/libproj.dir/proj\_json\_streaming\_writer.cpp.o My cmake command is cmake -GNinja -DE…

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## [Paraview 5.11.0 EGL vs Mesa - "Invalid Texture Dimensions"](https://discourse.paraview.org/t/paraview-5-11-0-egl-vs-mesa-invalid-texture-dimensions/13029)

<div class="topic-metadata">

**Author:** [@jgrime](https://discourse.paraview.org/u/jgrime)\
**Replies:** 11\
**Last updated:** [October 3, 2024, 5:46pm UTC](https://discourse.paraview.org/t/paraview-5-11-0-egl-vs-mesa-invalid-texture-dimensions/13029 "2024-10-03T17:46:05Z")

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I’m trying to compare the GPU-accelerated Paraview 5.11.0 in client/server mode to the CPU version under various conditions (number of GPUs, number of cores, etc). The test server is a dual-GPU Linux machine (Ubuntu 20.0…

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## [Plot over a random curved line in paraview contour plot](https://discourse.paraview.org/t/plot-over-a-random-curved-line-in-paraview-contour-plot/14579)

<div class="topic-metadata">

**Author:** [@scabo](https://discourse.paraview.org/u/scabo)\
**Replies:** 17\
**Last updated:** [May 17, 2024, 10:23am UTC](https://discourse.paraview.org/t/plot-over-a-random-curved-line-in-paraview-contour-plot/14579 "2024-05-17T10:23:00Z")

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Hi I have attached an image. I want to extract the data along the white line between the red and blue regions. THis is the air-water interface. How can i do it efficiently?

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## [Point data for OpenFOAM, coordinates](https://discourse.paraview.org/t/point-data-for-openfoam-coordinates/16949)

<div class="topic-metadata">

**Author:** [@niklyush](https://discourse.paraview.org/u/niklyush)\
**Replies:** 15\
**Last updated:** [July 31, 2025, 3:53pm UTC](https://discourse.paraview.org/t/point-data-for-openfoam-coordinates/16949 "2025-07-31T15:53:45Z")

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Good day to everyone. I would like to ask for an advice of somebody more experienced with ParaView than me, and I will be grateful for any input. I use paraview (paraFoam) to postprocess and also to export data after an…

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## [Paraview GUI view malfunction?](https://discourse.paraview.org/t/paraview-gui-view-malfunction/15875)

<div class="topic-metadata">

**Author:** [@thymomo178](https://discourse.paraview.org/u/thymomo178)\
**Replies:** 13\
**Last updated:** [April 29, 2026, 1:33pm UTC](https://discourse.paraview.org/t/paraview-gui-view-malfunction/15875 "2026-04-29T13:33:25Z")

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Hi, I’ve been using the same version of paraview on the same computer for 2 years, and it was working just fine this morning and then in the evening the GUI just started glitching. Specifically I just want to plot over…

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## [Run Vizualiser from ParaView](https://discourse.paraview.org/t/run-vizualiser-from-paraview/6947)

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**Author:** [@vicst](https://discourse.paraview.org/u/vicst)\
**Replies:** 9\
**Last updated:** [April 19, 2021, 2:59pm UTC](https://discourse.paraview.org/t/run-vizualiser-from-paraview/6947 "2021-04-19T14:59:49Z")

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Hi! I want to run Visualizer from ParaView in the terminal (I use Mac). I follow this step by step: https://kitware.github.io/visualizer/docs/index.html ./bin/pvpython ./Resourc…

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## [paraview pvESSI plug](https://discourse.paraview.org/t/paraview-pvessi-plug/13314)

<div class="topic-metadata">

**Author:** [@DongHyunLEE](https://discourse.paraview.org/u/DongHyunLEE)\
**Replies:** 11\
**Last updated:** [November 27, 2023, 12:48pm UTC](https://discourse.paraview.org/t/paraview-pvessi-plug/13314 "2023-11-27T12:48:01Z")

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Hellow. I downloaded and built paraview 5.10.1 source version on Ubuntu 22.04LTS. The plug-in I want to use is listed on github, and I installed it as instructed, but it does not install.

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## [Error While Building Paraview](https://discourse.paraview.org/t/error-while-building-paraview/11755)

<div class="topic-metadata">

**Author:** [@Muhammad\_Saad\_Atique](https://discourse.paraview.org/u/Muhammad_Saad_Atique)\
**Replies:** 11\
**Last updated:** [March 29, 2023, 4:27pm UTC](https://discourse.paraview.org/t/error-while-building-paraview/11755 "2023-03-29T16:27:15Z")

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Getting errors while build edition = CORE (CANONICAL builds fine): \[0/1\] Re-running CMake... -- VTK version: 9.2.6-2818-g481a2e7785 CMake Error at CMakeLists.txt:400 (message): The following modules were requested or re…

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## [velodyne puck 16](https://discourse.paraview.org/t/velodyne-puck-16/15734)

<div class="topic-metadata">

**Author:** [@Emad66](https://discourse.paraview.org/u/Emad66)\
**Replies:** 16\
**Last updated:** [November 19, 2024, 8:10pm UTC](https://discourse.paraview.org/t/velodyne-puck-16/15734 "2024-11-19T20:10:12Z")

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hello everyone … I have a Lidarview ver. 5 .when I start to recording data from velodyne 16 … it show me everything good … but after see the recoded file only show me the first view only … did not record all the views … …

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## [Issue opening .vtu files in virtual box Ubuntu](https://discourse.paraview.org/t/issue-opening-vtu-files-in-virtual-box-ubuntu/14197)

<div class="topic-metadata">

**Author:** [@cristopher\_morales](https://discourse.paraview.org/u/cristopher_morales)\
**Replies:** 9\
**Last updated:** [March 25, 2024, 9:45am UTC](https://discourse.paraview.org/t/issue-opening-vtu-files-in-virtual-box-ubuntu/14197 "2024-03-25T09:45:39Z")

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Hi all, I cannot open .vtm and .vtu files in paraview in my virtual machine in Ubuntu 20.04. Have someone experienced some of these issues before? please find attached the error that I got. ERROR: In ./VTK/Common/Execu…

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## [force stream lines to go up to end of simulation domain](https://discourse.paraview.org/t/force-stream-lines-to-go-up-to-end-of-simulation-domain/14048)

<div class="topic-metadata">

**Author:** [@otaolafr](https://discourse.paraview.org/u/otaolafr)\
**Replies:** 14\
**Last updated:** [March 11, 2024, 9:16am UTC](https://discourse.paraview.org/t/force-stream-lines-to-go-up-to-end-of-simulation-domain/14048 "2024-03-11T09:16:03Z")

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Hello, I have created stream lines from a custom source, the simulation is a tube with an internal mixer. (with axial direction be Z) for the source of the stream lines, load the inlet patch use extract block use sl…

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## [Elevation Filter does not gets loaded in SimpleParaview Example](https://discourse.paraview.org/t/elevation-filter-does-not-gets-loaded-in-simpleparaview-example/11927)

<div class="topic-metadata">

**Author:** [@Muhammad\_Saad\_Atique](https://discourse.paraview.org/u/Muhammad_Saad_Atique)\
**Replies:** 11\
**Last updated:** [June 2, 2023, 4:45pm UTC](https://discourse.paraview.org/t/elevation-filter-does-not-gets-loaded-in-simpleparaview-example/11927 "2023-06-02T16:45:22Z")

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Hi, I am trying to run SimpleParaview example. But Elevation Filter (custom filter) does not gets loaded in the application. I am running this on Windows. I ran it on Mac and it was working there.

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## [learning to function with .vtu files in Paraview](https://discourse.paraview.org/t/learning-to-function-with-vtu-files-in-paraview/16883)

<div class="topic-metadata">

**Author:** [@Ashugarg](https://discourse.paraview.org/u/Ashugarg)\
**Replies:** 10\
**Last updated:** [July 4, 2025, 9:51pm UTC](https://discourse.paraview.org/t/learning-to-function-with-vtu-files-in-paraview/16883 "2025-07-04T21:51:18Z")

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Hi, I have recently started using Paraview for visualizing outputs from my sub-surface model which provides output in .vtu format. I was wondering if there are any tutorial or guide available for the beginners to learn …

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## [How to Add a Custom Plugin and Interpreter in LidarView](https://discourse.paraview.org/t/how-to-add-a-custom-plugin-and-interpreter-in-lidarview/17000)

<div class="topic-metadata">

**Author:** [@Silver\_11](https://discourse.paraview.org/u/Silver_11)\
**Replies:** 18\
**Last updated:** [October 23, 2025, 6:41am UTC](https://discourse.paraview.org/t/how-to-add-a-custom-plugin-and-interpreter-in-lidarview/17000 "2025-10-23T06:41:03Z")

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I’m trying to add support for a new LiDAR model in LidarView, but currently, the software doesn’t support this sensor natively. I’d like to implement a custom plugin, similar to how the Livox plugin is integrated. Here …

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## [How can I structure the path line source file so that it can be read by the Paraview](https://discourse.paraview.org/t/how-can-i-structure-the-path-line-source-file-so-that-it-can-be-read-by-the-paraview/10564)

<div class="topic-metadata">

**Author:** [@Haijing](https://discourse.paraview.org/u/Haijing)\
**Replies:** 10\
**Last updated:** [October 26, 2022, 2:56am UTC](https://discourse.paraview.org/t/how-can-i-structure-the-path-line-source-file-so-that-it-can-be-read-by-the-paraview/10564 "2022-10-26T02:56:52Z")

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I have the raw result data from other simulations including: the index (ID) of the particle and the x, y and z position of the particle at different time point. As in following example: Index, x postion, y postion, z p…

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## [Catalyst V2 AddPipeline() doesn't use PYTHONPATH](https://discourse.paraview.org/t/catalyst-v2-addpipeline-doesnt-use-pythonpath/12599)

<div class="topic-metadata">

**Author:** [@Andy\_Bauer](https://discourse.paraview.org/u/Andy_Bauer)\
**Replies:** 11\
**Last updated:** [August 2, 2023, 2:51pm UTC](https://discourse.paraview.org/t/catalyst-v2-addpipeline-doesnt-use-pythonpath/12599 "2023-08-02T14:51:36Z")

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Hi, Looking at vtkInSituInitializationHelper::AddPipeline(const std::string& path) it expects the location of the passed in Catalyst script to be in a “good” location (I believe either in the current working directory …

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## [Error in update external sensor (LidarView SLAM Not Integrating External Sensor Trajectory Data)](https://discourse.paraview.org/t/error-in-update-external-sensor-lidarview-slam-not-integrating-external-sensor-trajectory-data/15004)

<div class="topic-metadata">

**Author:** [@Nitin\_Garg](https://discourse.paraview.org/u/Nitin_Garg)\
**Replies:** 14\
**Last updated:** [August 28, 2024, 8:53am UTC](https://discourse.paraview.org/t/error-in-update-external-sensor-lidarview-slam-not-integrating-external-sensor-trajectory-data/15004 "2024-08-28T08:53:03Z")

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I use a Velodyne VLP-16 LiDAR and an Advanced Navigation (Spatial) GNSS device. I have a \*.pcap file with a position orientation reader with global x,y,z, and roll, pitch,yaw. I have generated a csv file with position wi…

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## [External library for Paraview plugin](https://discourse.paraview.org/t/external-library-for-paraview-plugin/11297)

<div class="topic-metadata">

**Author:** [@k\_herdzik77](https://discourse.paraview.org/u/k_herdzik77)\
**Replies:** 10\
**Last updated:** [April 24, 2023, 12:24am UTC](https://discourse.paraview.org/t/external-library-for-paraview-plugin/11297 "2023-04-24T00:24:36Z")

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Hello everyone, we’re in the process of developing our plugin and we need to use an in-house developed library. After our naive plugin build completes, the plugin loads, but the Paraview crashes, complaining about an un…

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## [VTKHDF partitioned dataset visualization issues](https://discourse.paraview.org/t/vtkhdf-partitioned-dataset-visualization-issues/17353)

<div class="topic-metadata">

**Author:** [@hheinzer](https://discourse.paraview.org/u/hheinzer)\
**Replies:** 15\
**Last updated:** [February 17, 2026, 4:39pm UTC](https://discourse.paraview.org/t/vtkhdf-partitioned-dataset-visualization-issues/17353 "2026-02-17T16:39:34Z")

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I am trying to visualize data from my CFD solver using the VTKHDF file format and ParaView. The solver is MPI parallel. Until now I resorted to assembling the mesh in memory and then writing a single partition to the out…

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## [cross product](https://discourse.paraview.org/t/cross-product/15681)

<div class="topic-metadata">

**Author:** [@xq520](https://discourse.paraview.org/u/xq520)\
**Replies:** 9\
**Last updated:** [November 5, 2024, 6:46pm UTC](https://discourse.paraview.org/t/cross-product/15681 "2024-11-05T18:46:47Z")

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Hello, I want to compute the Lamb vector as shown as below, which is vortical vector cross product velocity vector. The vortical vector can be computed by Gradent filiter, but how to get cross product? Could someone giv…

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## [Issues with Catalyst 2.0 Installation & Failing Tests (ctest)](https://discourse.paraview.org/t/issues-with-catalyst-2-0-installation-failing-tests-ctest/16107)

<div class="topic-metadata">

**Author:** [@Bhavesh](https://discourse.paraview.org/u/Bhavesh)\
**Replies:** 20\
**Last updated:** [March 4, 2025, 10:36pm UTC](https://discourse.paraview.org/t/issues-with-catalyst-2-0-installation-failing-tests-ctest/16107 "2025-03-04T22:36:38Z")

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Hi everyone, I am trying to install Catalyst 2.0 and run ctest, but I am encountering multiple test failures. I have followed the official documentation: :link: Catalyst 2.0 Build & Install Guide System Information: O…

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## [Ubuntu 26.04 ParaView compile and run issues](https://discourse.paraview.org/t/ubuntu-26-04-paraview-compile-and-run-issues/17563)

<div class="topic-metadata">

**Author:** [@jfavre](https://discourse.paraview.org/u/jfavre)\
**Replies:** 10\
**Last updated:** [May 20, 2026, 3:30pm UTC](https://discourse.paraview.org/t/ubuntu-26-04-paraview-compile-and-run-issues/17563 "2026-05-20T15:30:27Z")

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Dear ParaView support I have moved to an Ubuntu 26.04 laptop with an NVIDIA GPU, and attempting to compile ParaView v6.1. As a reference, I have also downloaded the pre-compiled binary (ParaView-6.1.0-MPI-Linux-Python3.…

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## [Order of objects in pipeline browser](https://discourse.paraview.org/t/order-of-objects-in-pipeline-browser/7741)

<div class="topic-metadata">

**Author:** [@Venke](https://discourse.paraview.org/u/Venke)\
**Replies:** 1\
**Last updated:** [January 4, 2022, 10:47pm UTC](https://discourse.paraview.org/t/order-of-objects-in-pipeline-browser/7741 "2022-01-04T22:47:44Z")

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Hej, For sessions with many objects in the pipeline browser it would often be useful to rearrange the order of the objects later on. For example if the first objects in the pipeline browser are geological bodies followe…

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## [Crystal Eyes support for pv5.9](https://discourse.paraview.org/t/crystal-eyes-support-for-pv5-9/7156)

<div class="topic-metadata">

**Author:** [@lyz](https://discourse.paraview.org/u/lyz)\
**Replies:** 9\
**Last updated:** [May 7, 2021, 7:21am UTC](https://discourse.paraview.org/t/crystal-eyes-support-for-pv5-9/7156 "2021-05-07T07:21:49Z")

</div>

PV5.9MPI Does this release support Crystal Eyes in CAVE environemnt? or I need build pv by myself?

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## [std::bad\_alloc when clicking on Open](https://discourse.paraview.org/t/std-bad-alloc-when-clicking-on-open/12151)

<div class="topic-metadata">

**Author:** [@guillaume\_Peillex](https://discourse.paraview.org/u/guillaume_Peillex)\
**Replies:** 12\
**Last updated:** [June 7, 2023, 8:49am UTC](https://discourse.paraview.org/t/std-bad-alloc-when-clicking-on-open/12151 "2023-06-07T08:49:49Z")

</div>

Hi all, I built paraview inside a Docker container (image based on an old CentOS 7.6) using Spack. Everything is fine, except when i click on Open icon because paraview crashes. I tried to investigate and the crash oc…

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## [Cannot read VTU file with \`The data array in the element may be too short.\` message](https://discourse.paraview.org/t/cannot-read-vtu-file-with-the-data-array-in-the-element-may-be-too-short-message/14266)

<div class="topic-metadata">

**Author:** [@Kei\_Yamamoto](https://discourse.paraview.org/u/Kei_Yamamoto)\
**Replies:** 9\
**Last updated:** [October 8, 2025, 9:02am UTC](https://discourse.paraview.org/t/cannot-read-vtu-file-with-the-data-array-in-the-element-may-be-too-short-message/14266 "2025-10-08T09:02:32Z")

</div>

I have a following python script to take the time-average of XDMF file, which works completely fine with my MacBook Pro. #### import the simple module from the paraview from paraview.simple import \* from pathlib import …

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## [When use MPI on two HPC nodes, receive the following error and program will exit](https://discourse.paraview.org/t/when-use-mpi-on-two-hpc-nodes-receive-the-following-error-and-program-will-exit/12605)

<div class="topic-metadata">

**Author:** [@mahb](https://discourse.paraview.org/u/mahb)\
**Replies:** 9\
**Last updated:** [August 3, 2023, 6:10pm UTC](https://discourse.paraview.org/t/when-use-mpi-on-two-hpc-nodes-receive-the-following-error-and-program-will-exit/12605 "2023-08-03T18:10:30Z")

</div>

use paraview 5.9.0,When use MPI on two HPC nodes, receive the following error. How to solve it ？ thanks ^\[\[0m^\[\[31m(7745.250s) \[pvserver.0 \]vtkSocketCommunicator.c:781 ERR| vtkSocketCommunicator (0x1c09c10): Cou…

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## [Problem with gaps ("seams") in Contour plot for decomposed OpenFOAM results](https://discourse.paraview.org/t/problem-with-gaps-seams-in-contour-plot-for-decomposed-openfoam-results/17383)

<div class="topic-metadata">

**Author:** [@whereismymoney](https://discourse.paraview.org/u/whereismymoney)\
**Replies:** 19\
**Last updated:** [February 17, 2026, 4:12am UTC](https://discourse.paraview.org/t/problem-with-gaps-seams-in-contour-plot-for-decomposed-openfoam-results/17383 "2026-02-17T04:12:49Z")

</div>

(1) We start with decomposed OpenFOAM results. We cannot rerun the OpenFOAM simulation with any changes in settings. (2) We load the results into ParaView as a decomposed case. (3) The goal is to produce a Contour plot…

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## [Cmake error when building a ParaView plugin (external library linking)](https://discourse.paraview.org/t/cmake-error-when-building-a-paraview-plugin-external-library-linking/14849)

<div class="topic-metadata">

**Author:** [@pkestene](https://discourse.paraview.org/u/pkestene)\
**Replies:** 13\
**Last updated:** [June 17, 2025, 11:29am UTC](https://discourse.paraview.org/t/cmake-error-when-building-a-paraview-plugin-external-library-linking/14849 "2025-06-17T11:29:04Z")

</div>

Hello, I’m writing a C+±based ParaView plugin and found a strange cmake error at generate step. To reproduce the problem I’m facing, let’s start from a example (e.g. GitHub - jfavre/ParaViewSalvusPlugin: A C++ plugin f…

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## [Building ParaView with ANARI support](https://discourse.paraview.org/t/building-paraview-with-anari-support/15176)

<div class="topic-metadata">

**Author:** [@simonmssu](https://discourse.paraview.org/u/simonmssu)\
**Replies:** 9\
**Last updated:** [October 28, 2024, 6:37pm UTC](https://discourse.paraview.org/t/building-paraview-with-anari-support/15176 "2024-10-28T18:37:46Z")

</div>

We wanted to try out ANARI in ParaView. According to Jefferson Amstutz of the ANARI working group, Sankhesh Jhaveri had a merge request (https://gitlab.kitware.com/paraview/paraview/-/merge\_requests/6573) of ANARI in Par…

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## [Catalyst2 and ascent](https://discourse.paraview.org/t/catalyst2-and-ascent/13223)

<div class="topic-metadata">

**Author:** [@zetwal](https://discourse.paraview.org/u/zetwal)\
**Replies:** 11\
**Last updated:** [November 20, 2023, 7:17pm UTC](https://discourse.paraview.org/t/catalyst2-and-ascent/13223 "2023-11-20T19:17:49Z")

</div>

Hello Is there an example of catayst2 working with an ascent backend?

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## [Application of CFD-MFIX post-processing](https://discourse.paraview.org/t/application-of-cfd-mfix-post-processing/13148)

<div class="topic-metadata">

**Author:** [@Guanlong](https://discourse.paraview.org/u/Guanlong)\
**Replies:** 9\
**Last updated:** [November 1, 2023, 3:05am UTC](https://discourse.paraview.org/t/application-of-cfd-mfix-post-processing/13148 "2023-11-01T03:05:31Z")

</div>

Hello R&D personnel! Currently, I am post-processing the results calculated by CFD-Mfix software with the aim of achieving particle motion in Paraview. However, I have several problems that make me powerless. The questio…

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## [Programmable filter - result not shown after reloading pvsm](https://discourse.paraview.org/t/programmable-filter-result-not-shown-after-reloading-pvsm/12726)

<div class="topic-metadata">

**Author:** [@madmoonman](https://discourse.paraview.org/u/madmoonman)\
**Replies:** 10\
**Last updated:** [September 25, 2023, 1:53pm UTC](https://discourse.paraview.org/t/programmable-filter-result-not-shown-after-reloading-pvsm/12726 "2023-09-25T13:53:36Z")

</div>

Hello, I successfully implemented a programmable filter in PV 5.10.1 that copies a variable value from a certain region to each cell of other regions, which allows me to use it to normalize other scalars with it. It wor…

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## [Merge Blocks of a Tecplot .plt file](https://discourse.paraview.org/t/merge-blocks-of-a-tecplot-plt-file/16000)

<div class="topic-metadata">

**Author:** [@enrisang](https://discourse.paraview.org/u/enrisang)\
**Replies:** 10\
**Last updated:** [August 29, 2025, 9:41am UTC](https://discourse.paraview.org/t/merge-blocks-of-a-tecplot-plt-file/16000 "2025-08-29T09:41:41Z")

</div>

Hi! I’m a new here. I ran a CFD simulation and exported the result into Tecplot format (.plt). When I load the .plt file in Paraview, two different mesh zones are recognized and the Point Arrays of interest (x, y, z vel…

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## [Extracting stream-wise (U\_x) and span-wise(U\_y) velocities from a specified sub-domain](https://discourse.paraview.org/t/extracting-stream-wise-u-x-and-span-wise-u-y-velocities-from-a-specified-sub-domain/13772)

<div class="topic-metadata">

**Author:** [@Nafiz375](https://discourse.paraview.org/u/Nafiz375)\
**Replies:** 12\
**Last updated:** [January 30, 2024, 3:15pm UTC](https://discourse.paraview.org/t/extracting-stream-wise-u-x-and-span-wise-u-y-velocities-from-a-specified-sub-domain/13772 "2024-01-30T15:15:34Z")

</div>

Hello everyone, I’ve done 3D actuator disk simulation in OpenFoam, and now I’m trying to extract some data. I need to get the velocity components in a particular subdomain, not in the full domain. The attached figure is…

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## [programmable filter gives wrong results](https://discourse.paraview.org/t/programmable-filter-gives-wrong-results/12492)

<div class="topic-metadata">

**Author:** [@simonw](https://discourse.paraview.org/u/simonw)\
**Replies:** 11\
**Last updated:** [July 13, 2023, 2:46pm UTC](https://discourse.paraview.org/t/programmable-filter-gives-wrong-results/12492 "2023-07-13T14:46:39Z")

</div>

error.pvsm (954.5 KB) I have two .vtu files (field1 and field2) which contain one scalar field each defined on a rectangular grid. I want to compute the absolute error and the relative error between them. Attached is …

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## [pvserver that keeps running after crashing?](https://discourse.paraview.org/t/pvserver-that-keeps-running-after-crashing/16964)

<div class="topic-metadata">

**Author:** [@otaolafr](https://discourse.paraview.org/u/otaolafr)\
**Replies:** 22\
**Last updated:** [July 29, 2025, 4:15pm UTC](https://discourse.paraview.org/t/pvserver-that-keeps-running-after-crashing/16964 "2025-07-29T16:15:29Z")

</div>

Hello, at work, i have a pc and there is a workstation. i wanted to connect to my workstation from paraview in my pc. for this i am running (in the workstation) pvserver --force-offscreen-rendering from the ouput of it …

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## [Automatically find point ID with maximum value and plot over time/frequency without typing in Point ID value](https://discourse.paraview.org/t/automatically-find-point-id-with-maximum-value-and-plot-over-time-frequency-without-typing-in-point-id-value/13865)

<div class="topic-metadata">

**Author:** [@Aly\_Taleb](https://discourse.paraview.org/u/Aly_Taleb)\
**Replies:** 9\
**Last updated:** [February 6, 2024, 4:50pm UTC](https://discourse.paraview.org/t/automatically-find-point-id-with-maximum-value-and-plot-over-time-frequency-without-typing-in-point-id-value/13865 "2024-02-06T16:50:47Z")

</div>

Hey there, I’ve run a harmonic simulation in SimScale and I would like to carry out some postprocessing in Paraview. Specifically, I would like to plot the acceleration for the particular point ID, that exhibits the max…

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