# ParaView Support

**URL:** https://discourse.paraview.org/c/paraview-support/7.md?page=68

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

**Page:** 69

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## [Automate limits on thresholds](https://discourse.paraview.org/t/automate-limits-on-thresholds/12716)

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**Author:** [@hunter\_pead](https://discourse.paraview.org/u/hunter_pead)\
**Replies:** 1\
**Last updated:** [August 21, 2023, 7:26am UTC](https://discourse.paraview.org/t/automate-limits-on-thresholds/12716 "2023-08-21T07:26:43Z")

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I am using data that we have created through my research group. This data comes in all different limits with thresholds and I’m going to need to be able to run the same script a couple of times with all this different da…

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## [How to do an animation from a fluent .cas & .dat (steady simulation) in Paraview 5.10.1?](https://discourse.paraview.org/t/how-to-do-an-animation-from-a-fluent-cas-dat-steady-simulation-in-paraview-5-10-1/12632)

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**Author:** [@Leckie](https://discourse.paraview.org/u/Leckie)\
**Replies:** 15\
**Last updated:** [August 21, 2023, 5:10am UTC](https://discourse.paraview.org/t/how-to-do-an-animation-from-a-fluent-cas-dat-steady-simulation-in-paraview-5-10-1/12632 "2023-08-21T05:10:36Z")

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Hello everyone! I’m fairly new to Paraview, and I’m having some challenges with doing a simulation when importing fluent data. I have done my fair share of reading, but I just cannot make it work! flow.case.cas (458.4 …

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## [Combining datasets](https://discourse.paraview.org/t/combining-datasets/12719)

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**Author:** [@woodscn](https://discourse.paraview.org/u/woodscn)\
**Replies:** 1\
**Last updated:** [August 20, 2023, 12:43pm UTC](https://discourse.paraview.org/t/combining-datasets/12719 "2023-08-20T12:43:30Z")

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I have a segmented ImageData that I want to recombine into an image, similar to this one of the earth’s core: I’m able to cut the different segments into wedges using Clip filters, but I’m having trouble recombining t…

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## [Unable to use IParaView](https://discourse.paraview.org/t/unable-to-use-iparaview/12720)

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**Author:** [@Reshm\_R\_S](https://discourse.paraview.org/u/Reshm_R_S)\
**Replies:** 0\
**Last updated:** [August 19, 2023, 7:12pm UTC](https://discourse.paraview.org/t/unable-to-use-iparaview/12720 "2023-08-19T19:12:34Z")

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Hi, I have a custom build of paraview installed(sudo make install). Following the online instructions, I have successfully built and installed IParaview plugin (https://gitlab.kitware.com/paraview/plugins/iparaview-ker…

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## [Eigenvalue computation](https://discourse.paraview.org/t/eigenvalue-computation/9307)

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**Author:** [@ArroyoAndrea](https://discourse.paraview.org/u/ArroyoAndrea)\
**Replies:** 3\
**Last updated:** [August 18, 2023, 4:58pm UTC](https://discourse.paraview.org/t/eigenvalue-computation/9307 "2023-08-18T16:58:25Z")

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Hello all, I am implementing Lambda-2 criterion in Paraview 5.6.0 mounted on Linux. What it does is to provide a view of the presence of a vortex in a 3D flow by knowing when at least two of the eigenvalues of (||S||^2 …

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## [Programmable filter - eigenvalues/lambda2](https://discourse.paraview.org/t/programmable-filter-eigenvalues-lambda2/12188)

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**Author:** [@flotus1](https://discourse.paraview.org/u/flotus1)\
**Replies:** 8\
**Last updated:** [August 18, 2023, 4:54pm UTC](https://discourse.paraview.org/t/programmable-filter-eigenvalues-lambda2/12188 "2023-08-18T16:54:50Z")

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I followed this guide in an attempt to get Eigenvalues / Lambda2 calculated by ParaView: My script looks like this: import numpy as np from vtk.numpy\_interface import algorithms as algs input=inputs\[0\] Velocity\_Vecto…

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## [multiply a matrix by a vector in the Python Calculator filter](https://discourse.paraview.org/t/multiply-a-matrix-by-a-vector-in-the-python-calculator-filter/12711)

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**Author:** [@Andy\_Bauer](https://discourse.paraview.org/u/Andy_Bauer)\
**Replies:** 8\
**Last updated:** [August 17, 2023, 7:54pm UTC](https://discourse.paraview.org/t/multiply-a-matrix-by-a-vector-in-the-python-calculator-filter/12711 "2023-08-17T19:54:53Z")

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How do I multiply a matrix (array with number of components = 9) with a vector (array with number of components = 3) in the Python Calculator? I have a somewhat more complex expression that I want to do but it’s failing …

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## [wrong axes were hidden when trying to hiding some axes in 3D. Any one can help solve it?](https://discourse.paraview.org/t/wrong-axes-were-hidden-when-trying-to-hiding-some-axes-in-3d-any-one-can-help-solve-it/12709)

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**Author:** [@HL\_RAY](https://discourse.paraview.org/u/HL_RAY)\
**Replies:** 0\
**Last updated:** [August 17, 2023, 9:56am UTC](https://discourse.paraview.org/t/wrong-axes-were-hidden-when-trying-to-hiding-some-axes-in-3d-any-one-can-help-solve-it/12709 "2023-08-17T09:56:28Z")

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## [How can I save point labels created with 'Find data'?](https://discourse.paraview.org/t/how-can-i-save-point-labels-created-with-find-data/12681)

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**Author:** [@fourjaw](https://discourse.paraview.org/u/fourjaw)\
**Replies:** 3\
**Last updated:** [August 16, 2023, 2:44pm UTC](https://discourse.paraview.org/t/how-can-i-save-point-labels-created-with-find-data/12681 "2023-08-16T14:44:35Z")

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Hallo everyone! I am using Paraview version 5.10.1 on LinuxMint 21.1. In my multi-region result I created point labels with ‘Find data’ as shown in the image below. But how can I save these labels? They are only shown…

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## [The size of non-spherical particles shown in Paraview is not the size of real particles.](https://discourse.paraview.org/t/the-size-of-non-spherical-particles-shown-in-paraview-is-not-the-size-of-real-particles/12684)

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**Author:** [@Xie](https://discourse.paraview.org/u/Xie)\
**Replies:** 4\
**Last updated:** [August 16, 2023, 2:08pm UTC](https://discourse.paraview.org/t/the-size-of-non-spherical-particles-shown-in-paraview-is-not-the-size-of-real-particles/12684 "2023-08-16T14:08:46Z")

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Hello, teachers, I want to ask you a question. I import the.vtp file, and the size of the non-spherical particles shown in paraview is different from the actual particle size. Ask the teachers how to operate to make the …

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## [Connecting to Server vs Connecting to Desktop](https://discourse.paraview.org/t/connecting-to-server-vs-connecting-to-desktop/12669)

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**Author:** [@Reshm\_R\_S](https://discourse.paraview.org/u/Reshm_R_S)\
**Replies:** 2\
**Last updated:** [August 16, 2023, 12:50pm UTC](https://discourse.paraview.org/t/connecting-to-server-vs-connecting-to-desktop/12669 "2023-08-16T12:50:26Z")

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In my understanding, there are two ways to use paraview for remote rendering. Method A is to run a paraview server and connect to the server. Method B is to connect to the remote desktop running paraview through VNC and …

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## [Transform filter memory usage](https://discourse.paraview.org/t/transform-filter-memory-usage/12633)

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**Author:** [@woodscn](https://discourse.paraview.org/u/woodscn)\
**Replies:** 6\
**Last updated:** [August 14, 2023, 3:29pm UTC](https://discourse.paraview.org/t/transform-filter-memory-usage/12633 "2023-08-14T15:29:46Z")

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I have a (rather large) set of segmented imagedata. I’d like to use the Transform filter to explode out the segmented layers, similar to this image: https://cdn.24.co.za/files/Cms/General/d/10153/c2d878bd58aa44b1803afc3b…

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## [Installing paraview in fedora for remote access from a jupyter notebook.](https://discourse.paraview.org/t/installing-paraview-in-fedora-for-remote-access-from-a-jupyter-notebook/12630)

<div class="topic-metadata">

**Author:** [@Reshm\_R\_S](https://discourse.paraview.org/u/Reshm_R_S)\
**Replies:** 7\
**Last updated:** [August 14, 2023, 9:32am UTC](https://discourse.paraview.org/t/installing-paraview-in-fedora-for-remote-access-from-a-jupyter-notebook/12630 "2023-08-14T09:32:49Z")

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I have a working jupyter-lab installation in my fedora machine. I am able to access the jupyter notebook remotely using my system IP address and basic python commands are working. Now, I am planning to implement a remote…

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## [Cannot set Scalars attribute properly in Threshold when using python script](https://discourse.paraview.org/t/cannot-set-scalars-attribute-properly-in-threshold-when-using-python-script/12655)

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**Author:** [@Squirrel8475](https://discourse.paraview.org/u/Squirrel8475)\
**Replies:** 2\
**Last updated:** [August 13, 2023, 9:13am UTC](https://discourse.paraview.org/t/cannot-set-scalars-attribute-properly-in-threshold-when-using-python-script/12655 "2023-08-13T09:13:07Z")

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Hello Paraview team, My pipeline contains a “Threshold” to subselect cells based on ‘vtkValidPointMask’ scalar. It works fine when built from the GUI. However, when the pipeline is built from a Python script, the Scala…

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## [How do I add values on nodes in two files](https://discourse.paraview.org/t/how-do-i-add-values-on-nodes-in-two-files/12677)

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**Author:** [@ss780060872](https://discourse.paraview.org/u/ss780060872)\
**Replies:** 3\
**Last updated:** [August 11, 2023, 11:45am UTC](https://discourse.paraview.org/t/how-do-i-add-values-on-nodes-in-two-files/12677 "2023-08-11T11:45:27Z")

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Hello everyone, I have solved two XDMFFile files through fenics, and the two-dimensional grids in these two files are the same. I want to merge the two files into one, that is, the sum of the two. How can I achieve this …

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

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**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")

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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.

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## [Using the same filter for multiple input fields](https://discourse.paraview.org/t/using-the-same-filter-for-multiple-input-fields/12668)

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**Author:** [@lamBOO](https://discourse.paraview.org/u/lamBOO)\
**Replies:** 2\
**Last updated:** [August 10, 2023, 2:26pm UTC](https://discourse.paraview.org/t/using-the-same-filter-for-multiple-input-fields/12668 "2023-08-10T14:26:38Z")

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I have a dataset with 2 or more input fields “f1”, “f2”, “f3” etc. Say all fields have values in \[0.1\]. How can I apply the same filter to all of the fields simultaneously without copying the filter? E.g. applying a “Co…

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## [Reading HDF5 file (.h5) from MSC Nastran](https://discourse.paraview.org/t/reading-hdf5-file-h5-from-msc-nastran/12571)

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**Author:** [@Naveen\_R\_G](https://discourse.paraview.org/u/Naveen_R_G)\
**Replies:** 1\
**Last updated:** [August 8, 2023, 6:55am UTC](https://discourse.paraview.org/t/reading-hdf5-file-h5-from-msc-nastran/12571 "2023-08-08T06:55:41Z")

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Hello Guys, Can anyone help me with reading and plotting the MSC Nastran result file in HDF5 format in paraview.

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## [Get projection of vector field along normals from an imported STL file, and use it in the Calculator](https://discourse.paraview.org/t/get-projection-of-vector-field-along-normals-from-an-imported-stl-file-and-use-it-in-the-calculator/12521)

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**Author:** [@Squirrel8475](https://discourse.paraview.org/u/Squirrel8475)\
**Replies:** 4\
**Last updated:** [August 6, 2023, 3:00pm UTC](https://discourse.paraview.org/t/get-projection-of-vector-field-along-normals-from-an-imported-stl-file-and-use-it-in-the-calculator/12521 "2023-08-06T15:00:45Z")

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Hello, I would like to get the velocity component of a flow field along the local normals and perps of an imported STL mesh. The pipeline is illustrated in the attached picture. A dummy model is used, the STL mesh is …

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## [(CGNS) Is it possible to load a mesh with Cell-Centered solution and display the values in boundary patches?](https://discourse.paraview.org/t/cgns-is-it-possible-to-load-a-mesh-with-cell-centered-solution-and-display-the-values-in-boundary-patches/12185)

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**Author:** [@SadBoySquad](https://discourse.paraview.org/u/SadBoySquad)\
**Replies:** 10\
**Last updated:** [August 6, 2023, 2:44pm UTC](https://discourse.paraview.org/t/cgns-is-it-possible-to-load-a-mesh-with-cell-centered-solution-and-display-the-values-in-boundary-patches/12185 "2023-08-06T14:44:48Z")

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Greetings to all people here! Some time ago I created a thread here, asking for help in properly displaying boundary patches from a CGNS file in ParaView. The aforementioned thread is this one: My new question is kin…

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## [CGNS: Problem properly displaying a file with adaptive mesh solution](https://discourse.paraview.org/t/cgns-problem-properly-displaying-a-file-with-adaptive-mesh-solution/11427)

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**Author:** [@SadBoySquad](https://discourse.paraview.org/u/SadBoySquad)\
**Replies:** 6\
**Last updated:** [August 6, 2023, 2:36pm UTC](https://discourse.paraview.org/t/cgns-problem-properly-displaying-a-file-with-adaptive-mesh-solution/11427 "2023-08-06T14:36:16Z")

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Hello! I recently wanted to add some extra functionality in a couple of solvers I am working on. For all visualization purposes, I am using CGNS files. I managed to solve all problems thus far; with ParaView + CGNS I …

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## [Extracting Maximum Positions of Moving Lagrangian Points in a Fixed Eulerian Space](https://discourse.paraview.org/t/extracting-maximum-positions-of-moving-lagrangian-points-in-a-fixed-eulerian-space/12598)

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**Author:** [@yuantangjin](https://discourse.paraview.org/u/yuantangjin)\
**Replies:** 11\
**Last updated:** [August 4, 2023, 3:11pm UTC](https://discourse.paraview.org/t/extracting-maximum-positions-of-moving-lagrangian-points-in-a-fixed-eulerian-space/12598 "2023-08-04T15:11:14Z")

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Hello ParaView community, I am seeking assistance in using ParaView to extract the maximum positions of moving Lagrangian points within a fixed Eulerian space. Specifically, I have a scenario where points are in motion,…

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## [celldata pointdata array length / memory issue](https://discourse.paraview.org/t/celldata-pointdata-array-length-memory-issue/12643)

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**Author:** [@Dave1](https://discourse.paraview.org/u/Dave1)\
**Replies:** 1\
**Last updated:** [August 4, 2023, 11:44am UTC](https://discourse.paraview.org/t/celldata-pointdata-array-length-memory-issue/12643 "2023-08-04T11:44:47Z")

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Hello I use paraview to import openfoam data. Now to visualize data i use normally the pointdata because its looks nicer. The pointdata is interpolated from the raw celldata. Now both arrays have different lengths. I’m…

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## [Clip from polygonal mesh?](https://discourse.paraview.org/t/clip-from-polygonal-mesh/12600)

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**Author:** [@caladoa](https://discourse.paraview.org/u/caladoa)\
**Replies:** 7\
**Last updated:** [August 3, 2023, 6:38pm UTC](https://discourse.paraview.org/t/clip-from-polygonal-mesh/12600 "2023-08-03T18:38:37Z")

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Greetings, I have a bit of a tricky problem to tackle with Paraview in terms of filtering / clipping. I have a cell var (phi) which for phi=0 defines an an interface (surface). I would like to isolate each of these sep…

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## [Maintaining color scalars while exporting scene into VTK pipeline](https://discourse.paraview.org/t/maintaining-color-scalars-while-exporting-scene-into-vtk-pipeline/12639)

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**Author:** [@paulcena](https://discourse.paraview.org/u/paulcena)\
**Replies:** 6\
**Last updated:** [August 3, 2023, 6:17pm UTC](https://discourse.paraview.org/t/maintaining-color-scalars-while-exporting-scene-into-vtk-pipeline/12639 "2023-08-03T18:17:22Z")

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I am trying to export a scene with full color data into a vtk pipeline and keep having just the grayscale show up. I have tried almost every file type that has a corresponding vtk reader and each time the geometry correc…

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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)

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**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")

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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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## [Division of multi block data set](https://discourse.paraview.org/t/division-of-multi-block-data-set/12642)

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**Author:** [@h1773](https://discourse.paraview.org/u/h1773)\
**Replies:** 0\
**Last updated:** [August 3, 2023, 11:19am UTC](https://discourse.paraview.org/t/division-of-multi-block-data-set/12642 "2023-08-03T11:19:17Z")

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Hello, I am new for VTK. I have loaded one vtk file in paraview which have the multiblock data set in it and it have cells and faces in it (unstructured grid). I have filed data as will in it. I want to divide this cell…

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## [paraview stuck while establishing connection to pvserver on kubernetes](https://discourse.paraview.org/t/paraview-stuck-while-establishing-connection-to-pvserver-on-kubernetes/12640)

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**Author:** [@udi](https://discourse.paraview.org/u/udi)\
**Replies:** 0\
**Last updated:** [August 3, 2023, 10:15am UTC](https://discourse.paraview.org/t/paraview-stuck-while-establishing-connection-to-pvserver-on-kubernetes/12640 "2023-08-03T10:15:41Z")

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i run pvserver in kubernetes side with the command: DISPLAY= pvserver --server-port=30111 in the client side i run: kubectl port-forward svc/job-0 30111:30111 when i try to connect by paraview to cs://127.0.0.1…

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## [RGB coloring of mesh](https://discourse.paraview.org/t/rgb-coloring-of-mesh/12635)

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**Author:** [@aditya\_shukla](https://discourse.paraview.org/u/aditya_shukla)\
**Replies:** 0\
**Last updated:** [August 2, 2023, 4:02pm UTC](https://discourse.paraview.org/t/rgb-coloring-of-mesh/12635 "2023-08-02T16:02:50Z")

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Hi all I have a mesh structure . I have two arrays. One has dimensions (186530, 6). where 6 represents color of two faces. I also have array which has shape (186530, 1) which is a feature IDs. When I try to visualiz…

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## [Trying to SaveAnimation in pvbatch with an MP4 fails](https://discourse.paraview.org/t/trying-to-saveanimation-in-pvbatch-with-an-mp4-fails/12620)

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**Author:** [@GregVernon](https://discourse.paraview.org/u/GregVernon)\
**Replies:** 3\
**Last updated:** [August 2, 2023, 3:10pm UTC](https://discourse.paraview.org/t/trying-to-saveanimation-in-pvbatch-with-an-mp4-fails/12620 "2023-08-02T15:10:05Z")

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I have a Python script that I’m running in pvbatch, and when I use: SaveAnimation( 'testing.mp4', render\_view, ImageResolution=\[1920, 1080\], FrameRate=30 ) as derived from my trace, I get a Failed to determine format e…

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