# Top

**URL:** https://discourse.paraview.org/top.md?page=160&period=all

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

**Page:** 161

---

## [Acess to "Data Axes Grid" edit options by python](https://discourse.paraview.org/t/acess-to-data-axes-grid-edit-options-by-python/7267)

<div class="topic-metadata">

**Author:** [@Captain\_Convergence](https://discourse.paraview.org/u/Captain_Convergence)\
**Replies:** 0\
**Last updated:** [May 20, 2021, 6:40pm UTC](https://discourse.paraview.org/t/acess-to-data-axes-grid-edit-options-by-python/7267 "2021-05-20T18:40:03Z")

</div>

Hi all! I am trying to set axes in a desired position in order to track the flow in a better manner. However I need to do this from python scripts: I tried to trace the code while I was doing all these actions but t…

---

## [Find Tecplot mesh cell closest to Probe Location](https://discourse.paraview.org/t/find-tecplot-mesh-cell-closest-to-probe-location/4289)

<div class="topic-metadata">

**Author:** [@tskiado](https://discourse.paraview.org/u/tskiado)\
**Replies:** 0\
**Last updated:** [May 8, 2020, 2:41pm UTC](https://discourse.paraview.org/t/find-tecplot-mesh-cell-closest-to-probe-location/4289 "2020-05-08T14:41:43Z")

</div>

Hi all! I have loaded a Tecplot file in Paraview. I would like to find the mesh cell closest to a probe location with known coordinates and the according indices of the mesh (grid coordinates). Is that possible? Thanks…

---

## [Version 6.1.1 no longer reads my EnSight case files](https://discourse.paraview.org/t/version-6-1-1-no-longer-reads-my-ensight-case-files/17583)

<div class="topic-metadata">

**Author:** [@elynch](https://discourse.paraview.org/u/elynch)\
**Replies:** 2\
**Last updated:** [May 28, 2026, 1:37pm UTC](https://discourse.paraview.org/t/version-6-1-1-no-longer-reads-my-ensight-case-files/17583 "2026-05-28T13:37:29Z")

</div>

ensight\_case\_issue.zip (700.2 KB) I’ve attached a dataset in EnSight Gold format. There are three versions of the case file. original.case is the format we have been writing for years and which ParaView has been able …

---

## [Generate mesh from .dat file](https://discourse.paraview.org/t/generate-mesh-from-dat-file/16638)

<div class="topic-metadata">

**Author:** [@vinisagon](https://discourse.paraview.org/u/vinisagon)\
**Replies:** 2\
**Last updated:** [May 20, 2025, 3:37pm UTC](https://discourse.paraview.org/t/generate-mesh-from-dat-file/16638 "2025-05-20T15:37:07Z")

</div>

Hi everyone, Is it possible for me to get a help with my .dat file? I would like to import it into ParaView, and then generate the view of the mesh, but I’m not havin success with that. Could you please help me? Here yo…

---

## [Seeking Assistance with ParaView Display Issue](https://discourse.paraview.org/t/seeking-assistance-with-paraview-display-issue/13826)

<div class="topic-metadata">

**Author:** [@alanconway](https://discourse.paraview.org/u/alanconway)\
**Replies:** 2\
**Last updated:** [January 30, 2024, 1:55pm UTC](https://discourse.paraview.org/t/seeking-assistance-with-paraview-display-issue/13826 "2024-01-30T13:55:36Z")

</div>

Hello everyone, I’m encountering a perplexing issue with ParaView version 5.11.2, where a file I’m attempting to open is displayed as empty within the application. Interestingly, when I access the same file through an o…

---

## [How to calculate the mass flow rate of gas?](https://discourse.paraview.org/t/how-to-calculate-the-mass-flow-rate-of-gas/13554)

<div class="topic-metadata">

**Author:** [@Guanlong](https://discourse.paraview.org/u/Guanlong)\
**Replies:** 0\
**Last updated:** [December 19, 2023, 1:32am UTC](https://discourse.paraview.org/t/how-to-calculate-the-mass-flow-rate-of-gas/13554 "2023-12-19T01:32:50Z")

</div>

Hello developers and teachers, I sincerely seek your help on how to calculate the mass flow rate of gas (generated through reactions) on a cross-section. I sincerely hope that you can provide some technical guidance. Tha…

---

## [Paraview Web : going forward](https://discourse.paraview.org/t/paraview-web-going-forward/15341)

<div class="topic-metadata">

**Author:** [@Nicholas\_Yue](https://discourse.paraview.org/u/Nicholas_Yue)\
**Replies:** 1\
**Last updated:** [September 4, 2024, 5:53pm UTC](https://discourse.paraview.org/t/paraview-web-going-forward/15341 "2024-09-04T17:53:33Z")

</div>

I have been away from ParaView for about 18 months and catching up on various changes. I posted a question about my setup of a test cluster (eventually it will be much further away in an actual data center) which I was …

---

## [Load multi zone .ensight file, manipulate it and save in same format](https://discourse.paraview.org/t/load-multi-zone-ensight-file-manipulate-it-and-save-in-same-format/17518)

<div class="topic-metadata">

**Author:** [@Captain\_Convergence](https://discourse.paraview.org/u/Captain_Convergence)\
**Replies:** 5\
**Last updated:** [April 21, 2026, 9:25am UTC](https://discourse.paraview.org/t/load-multi-zone-ensight-file-manipulate-it-and-save-in-same-format/17518 "2026-04-21T09:25:57Z")

</div>

Dear support, I need to load a multi zone .encas file which is loaded as vtkMuktiBlockDataSet and after doing some manipulations I need to save it exactly in the same format. I can do it after using merge blocks to conv…

---

## [How to execute a command on a filter? vtkSMPropertyHelper does not help(](https://discourse.paraview.org/t/how-to-execute-a-command-on-a-filter-vtksmpropertyhelper-does-not-help/14254)

<div class="topic-metadata">

**Author:** [@joint](https://discourse.paraview.org/u/joint)\
**Replies:** 5\
**Last updated:** [March 25, 2024, 8:50am UTC](https://discourse.paraview.org/t/how-to-execute-a-command-on-a-filter-vtksmpropertyhelper-does-not-help/14254 "2024-03-25T08:50:38Z")

</div>

Hello dear paraview developers! How to force an execution of a command on my filter? vtkSMPropertyHelper does not seem to be appropriate for that. Thank u!

---

## [Parallel Rendering Capabilities of 2D Views in ParaView](https://discourse.paraview.org/t/parallel-rendering-capabilities-of-2d-views-in-paraview/14846)

<div class="topic-metadata">

**Author:** [@sherin.sugathan](https://discourse.paraview.org/u/sherin.sugathan)\
**Replies:** 4\
**Last updated:** [June 14, 2024, 7:12pm UTC](https://discourse.paraview.org/t/parallel-rendering-capabilities-of-2d-views-in-paraview/14846 "2024-06-14T19:12:55Z")

</div>

Hi All!, If I try to display a very large 2D matrix in Matplotlib, performance will degrade, especially the mouse interactions will become really slow. Does ParaView support parallel rendering (MPI and/or GPUs) in any o…

---

## [Comparing two datasets (with different sizes)](https://discourse.paraview.org/t/comparing-two-datasets-with-different-sizes/10966)

<div class="topic-metadata">

**Author:** [@Rodi\_Kay](https://discourse.paraview.org/u/Rodi_Kay)\
**Replies:** 0\
**Last updated:** [December 13, 2022, 5:16pm UTC](https://discourse.paraview.org/t/comparing-two-datasets-with-different-sizes/10966 "2022-12-13T17:16:51Z")

</div>

I have a problem that I want to compensate the displacements of my original problem by generating a compensated mesh, that after suffering the displacements from a thermo-mechanical problem will end up at the initial po…

---

## [How to get specific rows from CVS?](https://discourse.paraview.org/t/how-to-get-specific-rows-from-cvs/8076)

<div class="topic-metadata">

**Author:** [@joaocqmiranda](https://discourse.paraview.org/u/joaocqmiranda)\
**Replies:** 0\
**Last updated:** [September 24, 2021, 12:11pm UTC](https://discourse.paraview.org/t/how-to-get-specific-rows-from-cvs/8076 "2021-09-24T12:11:22Z")

</div>

This is my code i think needed a function different from this output.RowData.append(). Because it is doing the substitution of an array instead of adding another array in another row. # Code for 'Script' # We will …

---

## [Projecting data from a 2D mesh onto surface below in concentric rings](https://discourse.paraview.org/t/projecting-data-from-a-2d-mesh-onto-surface-below-in-concentric-rings/14277)

<div class="topic-metadata">

**Author:** [@BillBurrBaggins](https://discourse.paraview.org/u/BillBurrBaggins)\
**Replies:** 1\
**Last updated:** [April 1, 2024, 9:00am UTC](https://discourse.paraview.org/t/projecting-data-from-a-2d-mesh-onto-surface-below-in-concentric-rings/14277 "2024-04-01T09:00:05Z")

</div>

I have a closed triangulated 2D surface that is pancake-shaped and has approximate cylindrical symmetry. On the rim, the concentration of points with nonzero spontaneous curvature (spontaneous\_curvature) is high, while i…

---

## [Issue with Playing TXT Group in ParaView](https://discourse.paraview.org/t/issue-with-playing-txt-group-in-paraview/16742)

<div class="topic-metadata">

**Author:** [@Qwenthur](https://discourse.paraview.org/u/Qwenthur)\
**Replies:** 6\
**Last updated:** [June 4, 2025, 11:16am UTC](https://discourse.paraview.org/t/issue-with-playing-txt-group-in-paraview/16742 "2025-06-04T11:16:14Z")

</div>

Hi all, When opening a TXT group, I encountered the following issue: the TXT group cannot be played , but a VTK group opened using the same method can be played. By comparing the information of the two groups, I notice…

---

## [Different number of cells showed in full and half-xyz models](https://discourse.paraview.org/t/different-number-of-cells-showed-in-full-and-half-xyz-models/12003)

<div class="topic-metadata">

**Author:** [@Vinicius](https://discourse.paraview.org/u/Vinicius)\
**Replies:** 0\
**Last updated:** [May 2, 2023, 2:48am UTC](https://discourse.paraview.org/t/different-number-of-cells-showed-in-full-and-half-xyz-models/12003 "2023-05-02T02:48:36Z")

</div>

Hi, I am using this Tomofast-x software that generates vtk models as outputs. I created a model 24x6x20 (xyz) there. When I visualize the half-x model it shows the correct number of cells. For example: It shows 6 ce…

---

## [Building Custom Application using Clone 1 and Clone 2 examples](https://discourse.paraview.org/t/building-custom-application-using-clone-1-and-clone-2-examples/11807)

<div class="topic-metadata">

**Author:** [@Muhammad\_Saad\_Atique](https://discourse.paraview.org/u/Muhammad_Saad_Atique)\
**Replies:** 0\
**Last updated:** [April 4, 2023, 4:47pm UTC](https://discourse.paraview.org/t/building-custom-application-using-clone-1-and-clone-2-examples/11807 "2023-04-04T16:47:02Z")

</div>

Hi, So I am trying to build custom applications using Clone 1 and Clone 2 examples given on github. Is this the right approach, if I modify Clone 1 or Clone 2? And what’s the difference between Clone 1 and Clone 2? …

---

## [Creating a tree with different data at each node](https://discourse.paraview.org/t/creating-a-tree-with-different-data-at-each-node/10910)

<div class="topic-metadata">

**Author:** [@Juan\_Jose\_Casafranca](https://discourse.paraview.org/u/Juan_Jose_Casafranca)\
**Replies:** 0\
**Last updated:** [December 3, 2022, 1:07pm UTC](https://discourse.paraview.org/t/creating-a-tree-with-different-data-at-each-node/10910 "2022-12-03T13:07:47Z")

</div>

I have a Newton based optimizer and I am extracting some information into a tree like structure. My data looks something like this: Optimizer objective function initial value (double) Newton iteration CG Solver itera…

---

## [How to load e57 files in LidarView](https://discourse.paraview.org/t/how-to-load-e57-files-in-lidarview/17504)

<div class="topic-metadata">

**Author:** [@rowan](https://discourse.paraview.org/u/rowan)\
**Replies:** 5\
**Last updated:** [April 15, 2026, 5:54pm UTC](https://discourse.paraview.org/t/how-to-load-e57-files-in-lidarview/17504 "2026-04-15T17:54:57Z")

</div>

I’m trying to load an e57 file in LidarView and I can’t figure out which reader to use. I’ve tried a couple of them, like the default AVS UCD Reader: I don’t get any errors but I can’t see anything loaded.

---

## [How can I remove popup of glance](https://discourse.paraview.org/t/how-can-i-remove-popup-of-glance/10763)

<div class="topic-metadata">

**Author:** [@minK](https://discourse.paraview.org/u/minK)\
**Replies:** 0\
**Last updated:** [November 16, 2022, 8:29am UTC](https://discourse.paraview.org/t/how-can-i-remove-popup-of-glance/10763 "2022-11-16T08:29:26Z")

</div>

Hello I don’t need a file name’s popup of glance after drag and drop event just show up file after drop event what can I do for this setting sorry, I’m korean so don’t good at english thank you

---

## [non blocking filters that make web api calls](https://discourse.paraview.org/t/non-blocking-filters-that-make-web-api-calls/10702)

<div class="topic-metadata">

**Author:** [@Saswata\_Chakravarty](https://discourse.paraview.org/u/Saswata_Chakravarty)\
**Replies:** 0\
**Last updated:** [November 9, 2022, 8:12am UTC](https://discourse.paraview.org/t/non-blocking-filters-that-make-web-api-calls/10702 "2022-11-09T08:12:58Z")

</div>

Hi Team I am making a custom filter in python that makes multiple web api calls. Overall the results take some 5-15 minutes to complete. Is there a way to make the functions in the filter non-blocking? I notice that wh…

---

## [Building ParaView with int64 MPI enabled](https://discourse.paraview.org/t/building-paraview-with-int64-mpi-enabled/15561)

<div class="topic-metadata">

**Author:** [@Alexandre\_Minot](https://discourse.paraview.org/u/Alexandre_Minot)\
**Replies:** 4\
**Last updated:** [October 15, 2024, 9:42pm UTC](https://discourse.paraview.org/t/building-paraview-with-int64-mpi-enabled/15561 "2024-10-15T21:42:43Z")

</div>

Hello, We got the following error saving a slice of a large case with Catalyst. The error seems to be coming from the CGNS writer, which would have been called by the CGNS Extractor. vtkMPICommunicator.cxx:205 WARN| …

---

## [mp4 animation export from linux?](https://discourse.paraview.org/t/mp4-animation-export-from-linux/16578)

<div class="topic-metadata">

**Author:** [@otaolafr](https://discourse.paraview.org/u/otaolafr)\
**Replies:** 1\
**Last updated:** [May 7, 2025, 7:58am UTC](https://discourse.paraview.org/t/mp4-animation-export-from-linux/16578 "2025-05-07T07:58:58Z")

</div>

hello, while looking on the forum i found this post mentionning is only in windows ParaView - Saving Videos in pvpython and pvbatch - #2 by nicolas.vuaille is it planned to be brought to linux at one moment? thanks in …

---

## [View mode shapes - Error opening file &returned failure for request](https://discourse.paraview.org/t/view-mode-shapes-error-opening-file-returned-failure-for-request/14455)

<div class="topic-metadata">

**Author:** [@Heike1](https://discourse.paraview.org/u/Heike1)\
**Replies:** 1\
**Last updated:** [April 22, 2024, 9:26am UTC](https://discourse.paraview.org/t/view-mode-shapes-error-opening-file-returned-failure-for-request/14455 "2024-04-22T09:26:15Z")

</div>

Dear reader, I am new to ParaView. I am playing around with OpenFast ( NREL open-source wind turbine simulation tool) and trying to visualize different states. Some representations work really well :slight\_smile: Howe…

---

## [No data to display in Paraview](https://discourse.paraview.org/t/no-data-to-display-in-paraview/15184)

<div class="topic-metadata">

**Author:** [@PierreLCV](https://discourse.paraview.org/u/PierreLCV)\
**Replies:** 2\
**Last updated:** [August 8, 2024, 6:02pm UTC](https://discourse.paraview.org/t/no-data-to-display-in-paraview/15184 "2024-08-08T18:02:36Z")

</div>

Dear All, I am currently trying to learn more precisely OpenFOAM12 after achieved very basic tutorial where everything was working very well. To go further, I am trying to do a conjugate heat transfer simulation (coolin…

---

## [Help renaming objects from CSV data table](https://discourse.paraview.org/t/help-renaming-objects-from-csv-data-table/14792)

<div class="topic-metadata">

**Author:** [@lhabeeb](https://discourse.paraview.org/u/lhabeeb)\
**Replies:** 2\
**Last updated:** [June 7, 2024, 3:06pm UTC](https://discourse.paraview.org/t/help-renaming-objects-from-csv-data-table/14792 "2024-06-07T15:06:11Z")

</div>

I am working to create a network of a lot of spheres in paraview. I have coordinates and their respective names in a spreadsheet that I imported to paraview as a CSV. I am creating everything through the python shell u…

---

## [Change viewer setting in custom python reader](https://discourse.paraview.org/t/change-viewer-setting-in-custom-python-reader/7524)

<div class="topic-metadata">

**Author:** [@rtlee](https://discourse.paraview.org/u/rtlee)\
**Replies:** 0\
**Last updated:** [June 30, 2021, 6:26pm UTC](https://discourse.paraview.org/t/change-viewer-setting-in-custom-python-reader/7524 "2021-06-30T18:26:30Z")

</div>

Good afternoon, I wrote a Python plugin for Paraview using the routines in paraview.util.vtkAlgorithm. It works great, but I want to change some of the viewer settings when the file is opened (pick which scalar use for …

---

## [mesa support](https://discourse.paraview.org/t/mesa-support/5569)

<div class="topic-metadata">

**Author:** [@Francesc\_Costa](https://discourse.paraview.org/u/Francesc_Costa)\
**Replies:** 0\
**Last updated:** [October 15, 2020, 5:25pm UTC](https://discourse.paraview.org/t/mesa-support/5569 "2020-10-15T17:25:46Z")

</div>

Hello, How can I know if my recent successfull build of paraview supports mesa or not? I have not seen it as an option in ccmake Regards, Francesc

---

## [How to know whether a script is executed by ParaView Python?](https://discourse.paraview.org/t/how-to-know-whether-a-script-is-executed-by-paraview-python/17610)

<div class="topic-metadata">

**Author:** [@CsatiZoltan](https://discourse.paraview.org/u/CsatiZoltan)\
**Replies:** 6\
**Last updated:** [June 10, 2026, 3:51pm UTC](https://discourse.paraview.org/t/how-to-know-whether-a-script-is-executed-by-paraview-python/17610 "2026-06-10T15:51:56Z")

</div>

Is there a way to know at runtime if a Python file is executed from the ParaView environment (pvpython, pvbatch or from the Python shell of the GUI) or from a standard Python interpreter? I checked the environment variab…

---

## [How to automatically open a .nii image file when opening the paraview glance project?](https://discourse.paraview.org/t/how-to-automatically-open-a-nii-image-file-when-opening-the-paraview-glance-project/11925)

<div class="topic-metadata">

**Author:** [@LEOleo](https://discourse.paraview.org/u/LEOleo)\
**Replies:** 0\
**Last updated:** [April 19, 2023, 8:38am UTC](https://discourse.paraview.org/t/how-to-automatically-open-a-nii-image-file-when-opening-the-paraview-glance-project/11925 "2023-04-19T08:38:35Z")

</div>

We want to automatically open a .nii file for display when jumping to the paraview glance project from an interface. How can I do this?

---

## [Force calculation- CFD-REEF3D](https://discourse.paraview.org/t/force-calculation-cfd-reef3d/11809)

<div class="topic-metadata">

**Author:** [@Keshav\_Pathak](https://discourse.paraview.org/u/Keshav_Pathak)\
**Replies:** 0\
**Last updated:** [April 4, 2023, 5:51pm UTC](https://discourse.paraview.org/t/force-calculation-cfd-reef3d/11809 "2023-04-04T17:51:04Z")

</div>

I am using REEF3D for CFD purposes. The REEF3D uses Immersed boundary method (Ghost Cell Method) to define the solid structure in Fluid Domain (with a rectangular cartesian grid). For such a structure defined by IBM, how…

---

## [Help with Threshold filter](https://discourse.paraview.org/t/help-with-threshold-filter/17399)

<div class="topic-metadata">

**Author:** [@Patrick.Needs.Help](https://discourse.paraview.org/u/Patrick.Needs.Help)\
**Replies:** 4\
**Last updated:** [January 16, 2026, 5:24pm UTC](https://discourse.paraview.org/t/help-with-threshold-filter/17399 "2026-01-16T17:24:03Z")

</div>

Hello I am trying to script a headless version of a process that I am using through the gui for school and I am running into a bit of an issue with the threshold fitler. I am using a Programmable Filter (to subtract 2 se…

---

## [Animations: could it be a little bit more user friendly?](https://discourse.paraview.org/t/animations-could-it-be-a-little-bit-more-user-friendly/16856)

<div class="topic-metadata">

**Author:** [@PetrKryslUCSD](https://discourse.paraview.org/u/PetrKryslUCSD)\
**Replies:** 4\
**Last updated:** [June 24, 2025, 5:37pm UTC](https://discourse.paraview.org/t/animations-could-it-be-a-little-bit-more-user-friendly/16856 "2025-06-24T17:37:54Z")

</div>

I have 5.13.2. I can’t find the Animation view anywhere. Any ideas?

---

## [How does the filter Integrate Variables work for Umag (velocity magnitude)?](https://discourse.paraview.org/t/how-does-the-filter-integrate-variables-work-for-umag-velocity-magnitude/14979)

<div class="topic-metadata">

**Author:** [@vsaha](https://discourse.paraview.org/u/vsaha)\
**Replies:** 2\
**Last updated:** [July 5, 2024, 3:01am UTC](https://discourse.paraview.org/t/how-does-the-filter-integrate-variables-work-for-umag-velocity-magnitude/14979 "2024-07-05T03:01:10Z")

</div>

Hello, I am trying to understand how the Integrate Variables filter works on the velocity magnitude. I created a slice and added Cell Size filter to it. Then, I exported it as a CSV. Added Integrate Variables filter to…

---

## [could not find package](https://discourse.paraview.org/t/could-not-find-package/14183)

<div class="topic-metadata">

**Author:** [@Fin](https://discourse.paraview.org/u/Fin)\
**Replies:** 2\
**Last updated:** [April 21, 2024, 5:07pm UTC](https://discourse.paraview.org/t/could-not-find-package/14183 "2024-04-21T17:07:50Z")

</div>

paraview version v5.7.0 visual studio version: 2019 python 3.12.2 still encounter the error: Determined source version for paraview: 5.7.0 CMake Error at superbuild/cmake/SuperbuildMacros.cmake:823 (include): inclu…

---

## [Slice coloring](https://discourse.paraview.org/t/slice-coloring/7865)

<div class="topic-metadata">

**Author:** [@auringali11](https://discourse.paraview.org/u/auringali11)\
**Replies:** 0\
**Last updated:** [August 25, 2021, 5:49pm UTC](https://discourse.paraview.org/t/slice-coloring/7865 "2021-08-25T17:49:11Z")

</div>

Hello! When getting a 2D slice from the object we have is there any way to make the picture colorful? Or to make clearer borders of the particles on the slice?

---

## [vtkIcetCompositePass with python](https://discourse.paraview.org/t/vtkicetcompositepass-with-python/6478)

<div class="topic-metadata">

**Author:** [@hari](https://discourse.paraview.org/u/hari)\
**Replies:** 0\
**Last updated:** [February 17, 2021, 12:52am UTC](https://discourse.paraview.org/t/vtkicetcompositepass-with-python/6478 "2021-02-17T00:52:38Z")

</div>

Hi All, I am quite new to paraview/vtk. Sorry if this question is too trivial. I am trying to do a parallel volume rendering using vtkicetcompositepass. However, I am facing issues with import necessary modules from pa…

---

## [animation](https://discourse.paraview.org/t/animation/12673)

<div class="topic-metadata">

**Author:** [@DC\_W](https://discourse.paraview.org/u/DC_W)\
**Replies:** 1\
**Last updated:** [August 10, 2023, 2:59pm UTC](https://discourse.paraview.org/t/animation/12673 "2023-08-10T14:59:46Z")

</div>

When I imported a set of VTK files to generate an animation, I found that only one frame was displayed during the animation run, and the others were not displayed, so I had to switch manually.

---

## [Opening e57 files using the pdal reader](https://discourse.paraview.org/t/opening-e57-files-using-the-pdal-reader/17506)

<div class="topic-metadata">

**Author:** [@rowan](https://discourse.paraview.org/u/rowan)\
**Replies:** 4\
**Last updated:** [April 15, 2026, 5:55pm UTC](https://discourse.paraview.org/t/opening-e57-files-using-the-pdal-reader/17506 "2026-04-15T17:55:16Z")

</div>

I’m trying to load an e57 file in Paraview. I was told to use the pdal reader for this but I’m getting this error in the 6.1.0 version: ERROR: In vtkPDALReader.cxx, line 76 vtkPDALReader (0000017280680170): CreateStage…

---

## [Can 'Integrate variables' be used for summation of nodal values?](https://discourse.paraview.org/t/can-integrate-variables-be-used-for-summation-of-nodal-values/16571)

<div class="topic-metadata">

**Author:** [@simonw](https://discourse.paraview.org/u/simonw)\
**Replies:** 5\
**Last updated:** [May 6, 2025, 10:01am UTC](https://discourse.paraview.org/t/can-integrate-variables-be-used-for-summation-of-nodal-values/16571 "2025-05-06T10:01:21Z")

</div>

Suppose I have a vtu file containing a vector valued field quantity (three values + magnitude per node) on an unstructured 3d grid. I apply a slice filter to extract a snippet of the volume, e.g., Without a python sc…

---

## [Select points based on Coordinates using C++](https://discourse.paraview.org/t/select-points-based-on-coordinates-using-c/12485)

<div class="topic-metadata">

**Author:** [@Muhammad\_Saad\_Atique](https://discourse.paraview.org/u/Muhammad_Saad_Atique)\
**Replies:** 0\
**Last updated:** [July 10, 2023, 6:17pm UTC](https://discourse.paraview.org/t/select-points-based-on-coordinates-using-c/12485 "2023-07-10T18:17:14Z")

</div>

I have a vector in c++ which have coordinates. I want to select those points using c++ and then apply extract selection. Is there a way to make a selection based on vector in c++?

---

## [Spatial averaging over the domain](https://discourse.paraview.org/t/spatial-averaging-over-the-domain/9171)

<div class="topic-metadata">

**Author:** [@RaviGupta](https://discourse.paraview.org/u/RaviGupta)\
**Replies:** 0\
**Last updated:** [March 14, 2022, 7:37am UTC](https://discourse.paraview.org/t/spatial-averaging-over-the-domain/9171 "2022-03-14T07:37:48Z")

</div>

Hi, I’m trying to find the domain-wide spatial average of a scalar quantity q. I’m working with a non-uniform grid. The python calculator has a mean option. However, it is stated that it returns the average of the array…

---

## [streamline termination when using surface streamlines with group of surfaces since 5.10](https://discourse.paraview.org/t/streamline-termination-when-using-surface-streamlines-with-group-of-surfaces-since-5-10/16607)

<div class="topic-metadata">

**Author:** [@Jnsn](https://discourse.paraview.org/u/Jnsn)\
**Replies:** 2\
**Last updated:** [May 13, 2025, 12:23pm UTC](https://discourse.paraview.org/t/streamline-termination-when-using-surface-streamlines-with-group-of-surfaces-since-5-10/16607 "2025-05-13T12:23:50Z")

</div>

I am using the streamTracerWithCustomSource filter to generate streamlines on a surface. The data is from a CFD simulation, flow around a ship (similar to the OpenFOAM DTCHull tutorial, but for simplicity here only singl…

---

## [How to cull backface triangles](https://discourse.paraview.org/t/how-to-cull-backface-triangles/16297)

<div class="topic-metadata">

**Author:** [@Michael\_Jackson](https://discourse.paraview.org/u/Michael_Jackson)\
**Replies:** 2\
**Last updated:** [March 11, 2025, 2:29pm UTC](https://discourse.paraview.org/t/how-to-cull-backface-triangles/16297 "2025-03-11T14:29:30Z")

</div>

I have an STL File that I know has inconsistent triangle windings. How do I entice ParaView to NOT show those triangles? It’s been a while but isn’t it something about backface culling or something like that?

---

## [ParaView Office Hours January 22, 2026](https://discourse.paraview.org/t/paraview-office-hours-january-22-2026/17403)

<div class="topic-metadata">

**Author:** [@cory.quammen](https://discourse.paraview.org/u/cory.quammen)\
**Replies:** 0\
**Last updated:** [January 20, 2026, 6:43pm UTC](https://discourse.paraview.org/t/paraview-office-hours-january-22-2026/17403 "2026-01-20T18:43:27Z")

</div>

Kitware will be holding ParaView Office Hours again starting at 3:30pm ET on Thursday, January 22, 2026. The public meeting information is: ParaView office hours Thursday, January 22 · 3:30 – 5:00pm Time zone: Americ…

---

## [Is there a setting to attempt to keep ParaView alive after a server disconnect?](https://discourse.paraview.org/t/is-there-a-setting-to-attempt-to-keep-paraview-alive-after-a-server-disconnect/16106)

<div class="topic-metadata">

**Author:** [@GregVernon](https://discourse.paraview.org/u/GregVernon)\
**Replies:** 3\
**Last updated:** [February 6, 2025, 8:14am UTC](https://discourse.paraview.org/t/is-there-a-setting-to-attempt-to-keep-paraview-alive-after-a-server-disconnect/16106 "2025-02-06T08:14:25Z")

</div>

I often run into the issue where ParaView client/server will disconnect for some reason, e.g., put my client (laptop) to sleep/hibernate, WiFi network blips / changes. Whenever the server disconnects, you get the messag…

---

## [Possibility of ignoring NaN values in L2\_NORM\_RANGE](https://discourse.paraview.org/t/possibility-of-ignoring-nan-values-in-l2-norm-range/12854)

<div class="topic-metadata">

**Author:** [@GregVernon](https://discourse.paraview.org/u/GregVernon)\
**Replies:** 0\
**Last updated:** [September 13, 2023, 4:40pm UTC](https://discourse.paraview.org/t/possibility-of-ignoring-nan-values-in-l2-norm-range/12854 "2023-09-13T16:40:04Z")

</div>

We have an issue where opening a file that has NaN values in it (see attached) will pop-up errors for L2\_NORM\_RANGE. The NaNs are “real” – in the attached files they arise in the stress -\> triaxiality variable. From…

---

## [Create 2D streamlines of periodic 3D dataset](https://discourse.paraview.org/t/create-2d-streamlines-of-periodic-3d-dataset/11863)

<div class="topic-metadata">

**Author:** [@Boone](https://discourse.paraview.org/u/Boone)\
**Replies:** 0\
**Last updated:** [April 12, 2023, 3:03pm UTC](https://discourse.paraview.org/t/create-2d-streamlines-of-periodic-3d-dataset/11863 "2023-04-12T15:03:57Z")

</div>

Hi all, I am studying a downward facing step in 3D. The transverse direction is periodic. I would like to create 2D streamlines of my data. Currently I use: Temporal statistics to get a temporal average of the velocit…

---

## [Tecplot .plt transient files are not displaying geometry in ParaView](https://discourse.paraview.org/t/tecplot-plt-transient-files-are-not-displaying-geometry-in-paraview/11125)

<div class="topic-metadata">

**Author:** [@akshaybagi](https://discourse.paraview.org/u/akshaybagi)\
**Replies:** 0\
**Last updated:** [January 6, 2023, 1:48pm UTC](https://discourse.paraview.org/t/tecplot-plt-transient-files-are-not-displaying-geometry-in-paraview/11125 "2023-01-06T13:48:33Z")

</div>

Hello, I have CFD data in a series of Tecplot files (.plt). These are transient data files exported from CFD software. I want to import these files into ParaView to create animations. I am able to open an individual fil…

---

## [What for ExposedProperties and LinkProperties are needed?](https://discourse.paraview.org/t/what-for-exposedproperties-and-linkproperties-are-needed/14314)

<div class="topic-metadata">

**Author:** [@joint](https://discourse.paraview.org/u/joint)\
**Replies:** 4\
**Last updated:** [April 2, 2024, 1:44pm UTC](https://discourse.paraview.org/t/what-for-exposedproperties-and-linkproperties-are-needed/14314 "2024-04-02T13:44:32Z")

</div>

Hello! Could you please explain me what for ExposedProperties and LinkProperties are needed? Thank u!

---

## [Create perpendicular lines to Contour lines](https://discourse.paraview.org/t/create-perpendicular-lines-to-contour-lines/12870)

<div class="topic-metadata">

**Author:** [@Barbara\_Meneses\_Vega](https://discourse.paraview.org/u/Barbara_Meneses_Vega)\
**Replies:** 0\
**Last updated:** [September 15, 2023, 2:49am UTC](https://discourse.paraview.org/t/create-perpendicular-lines-to-contour-lines/12870 "2023-09-15T02:49:57Z")

</div>

Hello, I am new in Paraview. It has helped me a lot with my visualizations and I think it is a very nice software. Now, I am facing a problem: I have a 3D hydrogeological model and I need to make a slice in order to get…

[Previous page](https://discourse.paraview.org/top.md?page=159&per_page=50&period=all)

[Next page](https://discourse.paraview.org/top.md?page=161&per_page=50&period=all)