# ParaView Support

**URL:** https://discourse.paraview.org/c/paraview-support/7.md?page=21

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

**Page:** 22

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## [pvserver and pvbatch number of threads](https://discourse.paraview.org/t/pvserver-and-pvbatch-number-of-threads/16296)

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**Author:** [@hunter.gilbert](https://discourse.paraview.org/u/hunter.gilbert)\
**Replies:** 1\
**Last updated:** [March 11, 2025, 2:09pm UTC](https://discourse.paraview.org/t/pvserver-and-pvbatch-number-of-threads/16296 "2025-03-11T14:09:28Z")

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I’m using the headless paraview 5.13.0 and have a question about threading and MPI parallelism. When I launch pvbatch or pvserver with no other options, it appears that by default there are as many threads created as CPU…

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## [Azimuthal Averaging of quantity-contours at constant radius](https://discourse.paraview.org/t/azimuthal-averaging-of-quantity-contours-at-constant-radius/16292)

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**Author:** [@Stefano\_Giuntini](https://discourse.paraview.org/u/Stefano_Giuntini)\
**Replies:** 1\
**Last updated:** [March 11, 2025, 11:27am UTC](https://discourse.paraview.org/t/azimuthal-averaging-of-quantity-contours-at-constant-radius/16292 "2025-03-11T11:27:58Z")

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Hello, I am writing about a problem I am encountering in ParaView regarding the possibility of performing an azimuthal averaging, on a specific plane, of fluid-dynamic quantities at constant radius (for a sample of 100 …

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## [pvpython integrateVariables filter and extract data](https://discourse.paraview.org/t/pvpython-integratevariables-filter-and-extract-data/16287)

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**Author:** [@Emiliano\_Fortes](https://discourse.paraview.org/u/Emiliano_Fortes)\
**Replies:** 1\
**Last updated:** [March 11, 2025, 8:42am UTC](https://discourse.paraview.org/t/pvpython-integratevariables-filter-and-extract-data/16287 "2025-03-11T08:42:42Z")

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Hello dear community, I am running pvbatch so save the integrated data of some slices. I’ve tried a lot of things, based on what I could find in the forum. What I do is: from paraview.simple import \* import numpy as n…

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## [Save Data from several results file in the same .csv](https://discourse.paraview.org/t/save-data-from-several-results-file-in-the-same-csv/16280)

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**Author:** [@Boone](https://discourse.paraview.org/u/Boone)\
**Replies:** 1\
**Last updated:** [March 10, 2025, 3:37pm UTC](https://discourse.paraview.org/t/save-data-from-several-results-file-in-the-same-csv/16280 "2025-03-10T15:37:47Z")

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Hi all, I would like to save data from several result files (plot over line of 3 .plt files in my case) in the same .csv file. On the attached picture, I would like to save the data corresponding to the 3 lines (dumpR7,…

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## [3d lid driven cavity visualization](https://discourse.paraview.org/t/3d-lid-driven-cavity-visualization/16281)

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**Author:** [@FedericoPinto02](https://discourse.paraview.org/u/FedericoPinto02)\
**Replies:** 3\
**Last updated:** [March 10, 2025, 2:52pm UTC](https://discourse.paraview.org/t/3d-lid-driven-cavity-visualization/16281 "2025-03-10T14:52:11Z")

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Hi, im writing to have help in visualization, did you have some advice about visualization of a 3d lid driven cavity , all’ of my data are stored in a sequence of vtkfile cause l have a time step simulation , and i want …

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## [XDMF, Windows 7, paraview 4.3.1 carshing a lot](https://discourse.paraview.org/t/xdmf-windows-7-paraview-4-3-1-carshing-a-lot/16276)

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**Author:** [@Alexander\_Lewis](https://discourse.paraview.org/u/Alexander_Lewis)\
**Replies:** 4\
**Last updated:** [March 10, 2025, 7:49am UTC](https://discourse.paraview.org/t/xdmf-windows-7-paraview-4-3-1-carshing-a-lot/16276 "2025-03-10T07:49:28Z")

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BACKGROUND: I'm using paraview 4.3.1 on a windows 7. And the main purpose is to visualize some XDMF files. ISSUES: However, paraview Crashes everytime when I open the XDMF files, except the first time that I just insta…

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## [How to set the default background color of render view?](https://discourse.paraview.org/t/how-to-set-the-default-background-color-of-render-view/16270)

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**Author:** [@flipper](https://discourse.paraview.org/u/flipper)\
**Replies:** 2\
**Last updated:** [March 10, 2025, 2:47am UTC](https://discourse.paraview.org/t/how-to-set-the-default-background-color-of-render-view/16270 "2025-03-10T02:47:00Z")

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Hi, I want to call paraview in my Qt application, and set the default background color of Render View when paraview is initialized. How can I realize this please? Thank you very much!

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## [Filter to detect and treat outliers in field data](https://discourse.paraview.org/t/filter-to-detect-and-treat-outliers-in-field-data/16272)

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**Author:** [@simonw](https://discourse.paraview.org/u/simonw)\
**Replies:** 2\
**Last updated:** [March 9, 2025, 3:35pm UTC](https://discourse.paraview.org/t/filter-to-detect-and-treat-outliers-in-field-data/16272 "2025-03-09T15:35:38Z")

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I have 2d measurement data (x,y,u) which have some outliers, see e.g the highlighted regions below. To reproduce my picture, Table2Points and Delaunay2d needs to be applied to the attached file. Is there any filter to d…

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## [Number of Particles inside a scalar volume](https://discourse.paraview.org/t/number-of-particles-inside-a-scalar-volume/16174)

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**Author:** [@gzodo](https://discourse.paraview.org/u/gzodo)\
**Replies:** 7\
**Last updated:** [March 9, 2025, 11:08am UTC](https://discourse.paraview.org/t/number-of-particles-inside-a-scalar-volume/16174 "2025-03-09T11:08:12Z")

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Hi, I have a simulation whereby I created a scalar of particles. In post processing when I went to paraview I could see the scalar volume but I am not able to know the number of particles in that volume. Could you kindly…

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## [glyph always has white arrows pointing to the x direction?](https://discourse.paraview.org/t/glyph-always-has-white-arrows-pointing-to-the-x-direction/16255)

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**Author:** [@Feynman](https://discourse.paraview.org/u/Feynman)\
**Replies:** 2\
**Last updated:** [March 9, 2025, 9:43am UTC](https://discourse.paraview.org/t/glyph-always-has-white-arrows-pointing-to-the-x-direction/16255 "2025-03-09T09:43:52Z")

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Hello, I was modeling the fluid flux within a cylindrical material sample. However, when I used the glyph to create arrows to visualize the fluid flux (a vector variable in my case), the plot always returned some weird …

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## [How to set the qt path for Paraview installed via vcpkg?](https://discourse.paraview.org/t/how-to-set-the-qt-path-for-paraview-installed-via-vcpkg/15968)

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**Author:** [@flipper](https://discourse.paraview.org/u/flipper)\
**Replies:** 6\
**Last updated:** [March 7, 2025, 8:20am UTC](https://discourse.paraview.org/t/how-to-set-the-qt-path-for-paraview-installed-via-vcpkg/15968 "2025-03-07T08:20:24Z")

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My Qt application wants to incorporate ParaView installed via vcpkg, but the Qt bundled with ParaView conflicts with my own Qt. How can I set the path of the Qt bundled with ParaView to use my own Qt?Thank you very much! …

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## [How to load vtm files from foamToVTK into a pvpython script](https://discourse.paraview.org/t/how-to-load-vtm-files-from-foamtovtk-into-a-pvpython-script/16266)

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**Author:** [@lukasWiel](https://discourse.paraview.org/u/lukasWiel)\
**Replies:** 1\
**Last updated:** [March 6, 2025, 12:10pm UTC](https://discourse.paraview.org/t/how-to-load-vtm-files-from-foamtovtk-into-a-pvpython-script/16266 "2025-03-06T12:10:26Z")

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Dear more experienced and knowledgeable friend, I have run a model in openFoam, and used foamToVTK to generate vtm files (somehow it did not generate a vtk file). I wish to postprocess this model automatically (as in r…

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## [calculate area of cells?](https://discourse.paraview.org/t/calculate-area-of-cells/16262)

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**Author:** [@otaolafr](https://discourse.paraview.org/u/otaolafr)\
**Replies:** 0\
**Last updated:** [March 5, 2025, 9:01am UTC](https://discourse.paraview.org/t/calculate-area-of-cells/16262 "2025-03-05T09:01:07Z")

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Hello, I have a simulation in openfoam, vtkMultiblockDataSet with only load the internal mesh, when I use Cell size filter over the source of the reader (.foam on the pipeline browser) and check to calculate the area bu…

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## [Colormaps for Medical Image Visualizations](https://discourse.paraview.org/t/colormaps-for-medical-image-visualizations/16250)

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**Author:** [@b-k-hardy](https://discourse.paraview.org/u/b-k-hardy)\
**Replies:** 1\
**Last updated:** [March 1, 2025, 5:57am UTC](https://discourse.paraview.org/t/colormaps-for-medical-image-visualizations/16250 "2025-03-01T05:57:49Z")

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Hello, I saw a nice visualization of medical image data here on ParaView’s solutions page and I was wondering if there is a freely-available medical image colormap (similar to those found in 3D Slicer) to reproduce thes…

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## [NCSA pvsc's for Fetch Servers option](https://discourse.paraview.org/t/ncsa-pvscs-for-fetch-servers-option/16242)

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**Author:** [@mvanmoer](https://discourse.paraview.org/u/mvanmoer)\
**Replies:** 4\
**Last updated:** [February 28, 2025, 10:50pm UTC](https://discourse.paraview.org/t/ncsa-pvscs-for-fetch-servers-option/16242 "2025-02-28T22:50:51Z")

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Hello, Years ago I sent some pvsc’s for NCSA’s Blue Waters system to Dave DeMarle so they could be made available via the Fetch Servers option. That machine is retired, can those be removed and replaced with some for NC…

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## [TensorPrincipalInvariants filter](https://discourse.paraview.org/t/tensorprincipalinvariants-filter/15830)

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**Author:** [@Renato\_E\_Poli](https://discourse.paraview.org/u/Renato_E_Poli)\
**Replies:** 4\
**Last updated:** [February 28, 2025, 10:32pm UTC](https://discourse.paraview.org/t/tensorprincipalinvariants-filter/15830 "2025-02-28T22:32:06Z")

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Hi I am wondering if the expected behavior of the TensorPrincipalInvariants filter is to calculate the eigenvectors as sigma1(vector), sigma2(vector) and sigma3(vector). If so, I am not able to match the results in my …

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## [Slice filter performance in ParaView 5.13](https://discourse.paraview.org/t/slice-filter-performance-in-paraview-5-13/15557)

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**Author:** [@Yann](https://discourse.paraview.org/u/Yann)\
**Replies:** 18\
**Last updated:** [February 28, 2025, 8:55pm UTC](https://discourse.paraview.org/t/slice-filter-performance-in-paraview-5-13/15557 "2025-02-28T20:55:45Z")

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Hello all, I’m using ParaView to post-process OpenFOAM simulations. After moving from ParaView 5.11 to 5.13/5.13.1, I noticed a huge drop in performance for the slice filter. Slicing a relatively small dataset (3 mill…

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## [Automatic application of mesh displacement for certain name of vector field](https://discourse.paraview.org/t/automatic-application-of-mesh-displacement-for-certain-name-of-vector-field/16252)

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**Author:** [@fab4100](https://discourse.paraview.org/u/fab4100)\
**Replies:** 5\
**Last updated:** [February 28, 2025, 10:30am UTC](https://discourse.paraview.org/t/automatic-application-of-mesh-displacement-for-certain-name-of-vector-field/16252 "2025-02-28T10:30:20Z")

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Dear All, I am working with a moving mesh and I noticed that ParaView automatically applies the mesh displacement for certain names of the displacement vector field (e.g. “disp” or “displacement”). I typically define a…

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## [How does the paraview distribute tasks to each node during parallel rendering?](https://discourse.paraview.org/t/how-does-the-paraview-distribute-tasks-to-each-node-during-parallel-rendering/5886)

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**Author:** [@jone](https://discourse.paraview.org/u/jone)\
**Replies:** 6\
**Last updated:** [February 28, 2025, 12:17am UTC](https://discourse.paraview.org/t/how-does-the-paraview-distribute-tasks-to-each-node-during-parallel-rendering/5886 "2025-02-28T00:17:30Z")

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Recently, I have been using the function of Paraview parallel rendering. I am very interested in the distribution of parallel tasks. I am currently reading the source code, but I want to understand this aspect accurately…

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## [Issue with Small Portion of Mesh in Render View](https://discourse.paraview.org/t/issue-with-small-portion-of-mesh-in-render-view/16249)

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**Author:** [@npvanderaa](https://discourse.paraview.org/u/npvanderaa)\
**Replies:** 3\
**Last updated:** [February 27, 2025, 3:52pm UTC](https://discourse.paraview.org/t/issue-with-small-portion-of-mesh-in-render-view/16249 "2025-02-27T15:52:42Z")

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I am experiencing an issue while visualizing my OpenFOAM simulation in ParaView. When I load my case using paraFoam, the mesh appears only in a very small portion of the Render View, specifically in the bottom left corne…

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## [Closing a Paraview gui using pvpython from an external process](https://discourse.paraview.org/t/closing-a-paraview-gui-using-pvpython-from-an-external-process/16246)

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**Author:** [@Vivek\_Ojha](https://discourse.paraview.org/u/Vivek_Ojha)\
**Replies:** 9\
**Last updated:** [February 27, 2025, 3:25pm UTC](https://discourse.paraview.org/t/closing-a-paraview-gui-using-pvpython-from-an-external-process/16246 "2025-02-27T15:25:23Z")

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Hi, I have created a script using pvpython which outputs an interactive figure window with a field plotted on it. The script is run in the background using → /pvpython script.py &. After the figure has been plotted, is …

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## [Change the title of GUI window using pvpython](https://discourse.paraview.org/t/change-the-title-of-gui-window-using-pvpython/16247)

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**Author:** [@Vivek\_Ojha](https://discourse.paraview.org/u/Vivek_Ojha)\
**Replies:** 2\
**Last updated:** [February 27, 2025, 2:41pm UTC](https://discourse.paraview.org/t/change-the-title-of-gui-window-using-pvpython/16247 "2025-02-27T14:41:21Z")

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Hi, While calling paraview using pvpython, is it possible to edit the title of the GUI window where “Paraview” is written by default . Thanks!

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## [interpolation of two planes in 3d with different resolutions](https://discourse.paraview.org/t/interpolation-of-two-planes-in-3d-with-different-resolutions/16243)

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**Author:** [@Devin\_Richard\_Bayly](https://discourse.paraview.org/u/Devin_Richard_Bayly)\
**Replies:** 3\
**Last updated:** [February 26, 2025, 4:52pm UTC](https://discourse.paraview.org/t/interpolation-of-two-planes-in-3d-with-different-resolutions/16243 "2025-02-26T16:52:24Z")

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Hello there, I have a researcher interested in constructing a dataset for volumetric visualization out the interpolation of two planes that are offset from each other Is there a straightforward interpolator filter i…

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## [OpenGL problem in running paraview](https://discourse.paraview.org/t/opengl-problem-in-running-paraview/9438)

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**Author:** [@Zhuangz\_Zhang](https://discourse.paraview.org/u/Zhuangz_Zhang)\
**Replies:** 5\
**Last updated:** [February 26, 2025, 4:13pm UTC](https://discourse.paraview.org/t/opengl-problem-in-running-paraview/9438 "2025-02-26T16:13:35Z")

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Hello everyone, Recently, I tried installed paraview into my personal account in a server. I have downloaded the binary file in Download | ParaView, and the “ParaView-5.8.1-MPI-Linux-Python2.7-64bit” was downloaded. I …

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## [CMake error while build paraview from source on Windows](https://discourse.paraview.org/t/cmake-error-while-build-paraview-from-source-on-windows/16090)

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**Author:** [@gsabhishek](https://discourse.paraview.org/u/gsabhishek)\
**Replies:** 4\
**Last updated:** [February 26, 2025, 4:03pm UTC](https://discourse.paraview.org/t/cmake-error-while-build-paraview-from-source-on-windows/16090 "2025-02-26T16:03:23Z")

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I am trying to build ParaView from source on windows with catalyst. ParaView Version : 5.13.0 set catalyst\_DIR=C:\\Tools\\Catalyst\\master cmake --fresh -G Ninja "C:\\Tools\\Paraview\\src" -DCMAKE\_BUILD\_TYPE=Release -DCMAKE\_…

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## [Passing data from Elmer to Paraview](https://discourse.paraview.org/t/passing-data-from-elmer-to-paraview/16238)

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**Author:** [@Roland01](https://discourse.paraview.org/u/Roland01)\
**Replies:** 4\
**Last updated:** [February 26, 2025, 10:17am UTC](https://discourse.paraview.org/t/passing-data-from-elmer-to-paraview/16238 "2025-02-26T10:17:03Z")

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Hi, When making a model with Elmer, some parameters are defined (like physics constants/parameters or parametric geometric dimensions of the model, etc…). So my question is: when going to Paraview for the postprocessin…

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## [Simple example using SelectionQuerySource()?](https://discourse.paraview.org/t/simple-example-using-selectionquerysource/16235)

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**Author:** [@alwaysonemorebug](https://discourse.paraview.org/u/alwaysonemorebug)\
**Replies:** 0\
**Last updated:** [February 25, 2025, 12:44pm UTC](https://discourse.paraview.org/t/simple-example-using-selectionquerysource/16235 "2025-02-25T12:44:57Z")

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Is there a simple example of pvpython code that shows the correct use SelectionQuerySource()? SelectionQuerySource() was recommended as a solution that allows to include selections in the saved state. However, I’ve trie…

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## [movie of 3d image](https://discourse.paraview.org/t/movie-of-3d-image/16240)

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**Author:** [@nfultz](https://discourse.paraview.org/u/nfultz)\
**Replies:** 0\
**Last updated:** [February 25, 2025, 6:18pm UTC](https://discourse.paraview.org/t/movie-of-3d-image/16240 "2025-02-25T18:18:53Z")

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Hi all, I have a 3d volume and all I want to do is make a movie of the image where it is turning. I am using paraview version 5.13.2 and the tutorials online say (for older versions) that there should be an animation bu…

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## [Paraview 5.13.2 crashes when changing time step of a loaded HDF file.](https://discourse.paraview.org/t/paraview-5-13-2-crashes-when-changing-time-step-of-a-loaded-hdf-file/16216)

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**Author:** [@Hunt\_Feng](https://discourse.paraview.org/u/Hunt_Feng)\
**Replies:** 4\
**Last updated:** [February 25, 2025, 7:54am UTC](https://discourse.paraview.org/t/paraview-5-13-2-crashes-when-changing-time-step-of-a-loaded-hdf-file/16216 "2025-02-25T07:54:41Z")

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So I have this test HDF file. test.hdf (22.8 KB) It has two groups: PointData and Steps. There are 10 time steps, and each time step the point field has different values. Paraview 5.13.2 successfully loaded this HD…

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## [Error in PLY files when exported](https://discourse.paraview.org/t/error-in-ply-files-when-exported/16168)

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**Author:** [@GKH](https://discourse.paraview.org/u/GKH)\
**Replies:** 11\
**Last updated:** [February 24, 2025, 4:11pm UTC](https://discourse.paraview.org/t/error-in-ply-files-when-exported/16168 "2025-02-24T16:11:08Z")

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Hello everyone! I have a VTK file from a FastFARM simulation of a wind turbine and the air flow around it. I used the Stream Tracer function with a point cloud as seed type, and then the Tube function to increase its wi…

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