# ParaView Support

**URL:** https://discourse.paraview.org/c/paraview-support/7.md?page=156

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**Page:** 157

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## [Calculating the divergence in paraview, Gradient filter](https://discourse.paraview.org/t/calculating-the-divergence-in-paraview-gradient-filter/6220)

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**Author:** [@Renard](https://discourse.paraview.org/u/Renard)\
**Replies:** 3\
**Last updated:** [January 13, 2021, 3:10pm UTC](https://discourse.paraview.org/t/calculating-the-divergence-in-paraview-gradient-filter/6220 "2021-01-13T15:10:48Z")

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Hi, There used to be a quite useful filter in Paraview called the GradientOfUnstructuredGrid, which I was using to calculate the divergence of vector fields. Unfortunately, Paraview removed this filter from the latest …

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## [Read data off a curved terrain.](https://discourse.paraview.org/t/read-data-off-a-curved-terrain/6210)

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**Author:** [@Olivier\_Dambron](https://discourse.paraview.org/u/Olivier_Dambron)\
**Replies:** 7\
**Last updated:** [January 12, 2021, 3:27pm UTC](https://discourse.paraview.org/t/read-data-off-a-curved-terrain/6210 "2021-01-12T15:27:27Z")

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Hi everyone, I’m trying to read data at 1.1m off the ground, but my ground is sloped/hilly. What would be the best way to use the ground’s geometry, offset it by 1.1m and read result there? Thanks in advance; Kind re…

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## [StreamTracer](https://discourse.paraview.org/t/streamtracer/6206)

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**Author:** [@ccarranza](https://discourse.paraview.org/u/ccarranza)\
**Replies:** 5\
**Last updated:** [January 12, 2021, 2:26pm UTC](https://discourse.paraview.org/t/streamtracer/6206 "2021-01-12T14:26:25Z")

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Is it possible to use StreamTracer with vtu extension? I am using Quad for Cell type. Thank you for your time, Celso

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## [Scripting for run same Python code 20-40 times (corresponding to different slices)](https://discourse.paraview.org/t/scripting-for-run-same-python-code-20-40-times-corresponding-to-different-slices/6195)

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**Author:** [@proxy](https://discourse.paraview.org/u/proxy)\
**Replies:** 6\
**Last updated:** [January 12, 2021, 1:19pm UTC](https://discourse.paraview.org/t/scripting-for-run-same-python-code-20-40-times-corresponding-to-different-slices/6195 "2021-01-12T13:19:55Z")

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Hello all, I am trying to average the data in the span-wise direction referring to the previous posts: I am now slicing the span-wise area in 10-20 slices and then will average these slices to get the averaged span-w…

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## [Crash pvserver when open file with mpi](https://discourse.paraview.org/t/crash-pvserver-when-open-file-with-mpi/6199)

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**Author:** [@SADA](https://discourse.paraview.org/u/SADA)\
**Replies:** 3\
**Last updated:** [January 12, 2021, 9:20am UTC](https://discourse.paraview.org/t/crash-pvserver-when-open-file-with-mpi/6199 "2021-01-12T09:20:34Z")

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Hi, I want to open CASE file. The file size is 2.5GB including other files. When I use 1core, I can open it. But I use over 14core, I can’t open it. And crash pvserver. Do you know the solution? The machine which wor…

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## [Paraview Segfault - picking in render window](https://discourse.paraview.org/t/paraview-segfault-picking-in-render-window/5972)

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**Author:** [@chart3388](https://discourse.paraview.org/u/chart3388)\
**Replies:** 2\
**Last updated:** [January 12, 2021, 1:36am UTC](https://discourse.paraview.org/t/paraview-segfault-picking-in-render-window/5972 "2021-01-12T01:36:32Z")

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From ParaView 5.9.0-RC2 going back to ParaView 5.8.1 I can make it segfault after reading in a fairly big vtkmultiblock object (900MB) that consists of ~5000 DataSets vtp. File -\> Open -\> select vtm and then hit apply.…

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## [Electric Current Flux Through Surface](https://discourse.paraview.org/t/electric-current-flux-through-surface/6197)

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**Author:** [@modelman](https://discourse.paraview.org/u/modelman)\
**Replies:** 1\
**Last updated:** [January 11, 2021, 8:26pm UTC](https://discourse.paraview.org/t/electric-current-flux-through-surface/6197 "2021-01-11T20:26:37Z")

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I have obtained the electric current density (flux density) from an Elmer 3D finite-element model. My objective is to calculate the current through a plane defined in the model. Here is what I tried: In Paraview, I o…

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## [Is there a filter that can be used to average slices?](https://discourse.paraview.org/t/is-there-a-filter-that-can-be-used-to-average-slices/6203)

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**Author:** [@randomwangran](https://discourse.paraview.org/u/randomwangran)\
**Replies:** 0\
**Last updated:** [January 11, 2021, 7:28pm UTC](https://discourse.paraview.org/t/is-there-a-filter-that-can-be-used-to-average-slices/6203 "2021-01-11T19:28:03Z")

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In the following example, a user would be expected to have such a filter. It takes the slices objects as input arguments the output would be the spatial mean of them. This filter would be good for scientific researche…

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## [How can I apply a streamtrace to a 2D csv file?](https://discourse.paraview.org/t/how-can-i-apply-a-streamtrace-to-a-2d-csv-file/6190)

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**Author:** [@dr\_pfeffier](https://discourse.paraview.org/u/dr_pfeffier)\
**Replies:** 1\
**Last updated:** [January 11, 2021, 9:16am UTC](https://discourse.paraview.org/t/how-can-i-apply-a-streamtrace-to-a-2d-csv-file/6190 "2021-01-11T09:16:37Z")

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I’ve looked through the other available posts on here, but none of the suggestions work. I have a structured table with columns X, Y, n, u0, a, \[…\] where my data is 2-Dimensional. I would like to apply a stream trace t…

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## [\[LagrangianParticleTracker\] Faster locator for vtkimage data](https://discourse.paraview.org/t/lagrangianparticletracker-faster-locator-for-vtkimage-data/6192)

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**Author:** [@BinWang0213](https://discourse.paraview.org/u/BinWang0213)\
**Replies:** 1\
**Last updated:** [January 11, 2021, 9:10am UTC](https://discourse.paraview.org/t/lagrangianparticletracker-faster-locator-for-vtkimage-data/6192 "2021-01-11T09:10:13Z")

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Hey all, I’d like to trace particles in an image-based velocity field (1000x500x500). Now everything works well but it is too slow to trace even 10k particles in such dataset. I found the following code may help to spee…

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## [How does the simple.py module render polydata?](https://discourse.paraview.org/t/how-does-the-simple-py-module-render-polydata/6183)

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**Author:** [@jone](https://discourse.paraview.org/u/jone)\
**Replies:** 0\
**Last updated:** [January 8, 2021, 12:43am UTC](https://discourse.paraview.org/t/how-does-the-simple-py-module-render-polydata/6183 "2021-01-08T00:43:10Z")

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I want to use simple.py module on the server side to render polydata written by VTK, is there any way to solve this problem? I’m not sure the method I’m looking for really works: trivialProducer = simple.TrivialPro…

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## [Get Minimum Cell Dimensions](https://discourse.paraview.org/t/get-minimum-cell-dimensions/6177)

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**Author:** [@theodorebaltis](https://discourse.paraview.org/u/theodorebaltis)\
**Replies:** 1\
**Last updated:** [January 7, 2021, 9:29am UTC](https://discourse.paraview.org/t/get-minimum-cell-dimensions/6177 "2021-01-07T09:29:50Z")

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I’m trying to get the minimum cell edge lengths in X,Y, and Z. The best solution I’ve found yet is the accepted solution from this link: https://stackoverflow.com/questions/47714565/vtk-how-to-read-grid-cells-lenth-wid…

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## [Xlib error in ParaView-5.8.0 for Linux](https://discourse.paraview.org/t/xlib-error-in-paraview-5-8-0-for-linux/4663)

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**Author:** [@S\_T](https://discourse.paraview.org/u/S_T)\
**Replies:** 2\
**Last updated:** [January 7, 2021, 12:45am UTC](https://discourse.paraview.org/t/xlib-error-in-paraview-5-8-0-for-linux/4663 "2021-01-07T00:45:10Z")

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I installed ParaView-5.8.0-MPI-Linux-Python3.7-64bit. Running the command paraview-mesa paraview --backend llvmpipe results in the error message: Xlib: extension "MIT-SHM" missing on display "XXX:X". and a broken Re…

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## [qt5 help component missing while building Paraview.](https://discourse.paraview.org/t/qt5-help-component-missing-while-building-paraview/6175)

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**Author:** [@Waqas\_Ahmad](https://discourse.paraview.org/u/Waqas_Ahmad)\
**Replies:** 1\
**Last updated:** [January 6, 2021, 3:23pm UTC](https://discourse.paraview.org/t/qt5-help-component-missing-while-building-paraview/6175 "2021-01-06T15:23:36Z")

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I am trying to build paraview with qt support but I am receiving the following error. but it set Qt5\_FOUND to FALSE so package "Qt5" is considered to be NOT FOUND. Reason given by package: Failed to find Qt5 …

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## [Problem with libavformat.so.56 at paraview 5.2](https://discourse.paraview.org/t/problem-with-libavformat-so-56-at-paraview-5-2/4574)

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**Author:** [@mfduqued](https://discourse.paraview.org/u/mfduqued)\
**Replies:** 2\
**Last updated:** [January 6, 2021, 2:05pm UTC](https://discourse.paraview.org/t/problem-with-libavformat-so-56-at-paraview-5-2/4574 "2021-01-06T14:05:12Z")

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Hi community I installed paraview 5.2, but when I try to initialize it I have this error /usr/local/lib/paraview-5.2/paraview: error while loading shared libraries: libavformat.so.56: cannot open shared object file: N…

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## [Why vtkSocketCommunicatorHash is different](https://discourse.paraview.org/t/why-vtksocketcommunicatorhash-is-different/4550)

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**Author:** [@sharon](https://discourse.paraview.org/u/sharon)\
**Replies:** 6\
**Last updated:** [January 6, 2021, 1:59pm UTC](https://discourse.paraview.org/t/why-vtksocketcommunicatorhash-is-different/4550 "2021-01-06T13:59:25Z")

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Dear Experts, Recently i am try paraview server-client mode, and i build paraview on linux and windows separately, but when i connect paraview to server it failed. I found the vtkSocketCommunicatorHash is different i…

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## [pvNVIDIAIndex on superbuild](https://discourse.paraview.org/t/pvnvidiaindex-on-superbuild/4357)

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**Author:** [@kmilo9999](https://discourse.paraview.org/u/kmilo9999)\
**Replies:** 2\
**Last updated:** [January 6, 2021, 1:38pm UTC](https://discourse.paraview.org/t/pvnvidiaindex-on-superbuild/4357 "2021-01-06T13:38:35Z")

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Hello, I am trying to install the pvNVIDIAIndex plugin on a paraview 5.7 installation built with paraview-superbuild. I see the option ENABLE\_nvidiaindex in the cmake script, and set it to ON. It downloads the file “n…

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## [pv5.9rc2 build](https://discourse.paraview.org/t/pv5-9rc2-build/6084)

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**Author:** [@lyz](https://discourse.paraview.org/u/lyz)\
**Replies:** 7\
**Last updated:** [January 6, 2021, 12:12am UTC](https://discourse.paraview.org/t/pv5-9rc2-build/6084 "2021-01-06T00:12:59Z")

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I build pv5.9rc2 with vs2017x64 (qt5.12) on windows7 using the default configuration. However, when I run the application, the GUI show below:

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## [Error when running RemoteView example with Paraview pv\_server.py](https://discourse.paraview.org/t/error-when-running-remoteview-example-with-paraview-pv-server-py/6104)

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**Author:** [@Charliebrowne](https://discourse.paraview.org/u/Charliebrowne)\
**Replies:** 6\
**Last updated:** [January 5, 2021, 4:51pm UTC](https://discourse.paraview.org/t/error-when-running-remoteview-example-with-paraview-pv-server-py/6104 "2021-01-05T16:51:06Z")

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Hi there I tried to run the default RemoteView live example but it fails when launching the server script (using Paraview as a backend 2nd script on this example page) - Running ParaView 5.9.0-RC1-MPI-Windows-Python3.8-…

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## [I cant save animation of my simulation](https://discourse.paraview.org/t/i-cant-save-animation-of-my-simulation/2698)

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**Author:** [@Sirius\_Fuenmayor](https://discourse.paraview.org/u/Sirius_Fuenmayor)\
**Replies:** 4\
**Last updated:** [January 4, 2021, 10:27pm UTC](https://discourse.paraview.org/t/i-cant-save-animation-of-my-simulation/2698 "2021-01-04T22:27:38Z")

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I can not save an animation of my simulation. I am using ParaView 5.4.1 64 bit on Ubuntu with an NVIDIA GT430 graphics card: I get the following warnings and errors: Generic Warning: In /build/paraview-lH8wFv/paraview-5…

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## [Error on compiling Paraview with OpenFOAM using ./makeparaview in Fedora](https://discourse.paraview.org/t/error-on-compiling-paraview-with-openfoam-using-makeparaview-in-fedora/6166)

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**Author:** [@Jinshah\_B\_S](https://discourse.paraview.org/u/Jinshah_B_S)\
**Replies:** 1\
**Last updated:** [January 4, 2021, 8:50pm UTC](https://discourse.paraview.org/t/error-on-compiling-paraview-with-openfoam-using-makeparaview-in-fedora/6166 "2021-01-04T20:50:09Z")

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I installed all the dependancies for paraview and the command ./makeParaView -python -mpi -qmake /usr/lib64/qt5/ is called for compiling paraview . The version is 5.6.3. It ends up in an error at 65%. The last few lines …

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## [data representation seems wrong when load .vtu written from the model with hexahedral mesh](https://discourse.paraview.org/t/data-representation-seems-wrong-when-load-vtu-written-from-the-model-with-hexahedral-mesh/6117)

<div class="topic-metadata">

**Author:** [@marine3454](https://discourse.paraview.org/u/marine3454)\
**Replies:** 3\
**Last updated:** [January 4, 2021, 6:08pm UTC](https://discourse.paraview.org/t/data-representation-seems-wrong-when-load-vtu-written-from-the-model-with-hexahedral-mesh/6117 "2021-01-04T18:08:05Z")

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My problem seems like a data representation issue when import .vtu file generated from Abaqus .odb with hexahedral mesh (C3D8R). My script works okay to create .vtu with tetrahedral mesh though. This is what’s shown i…

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## [vtkSi source proxy 0x56b01ba0d90 : failed to create vtkxdmfreader aborting for debugging purposes](https://discourse.paraview.org/t/vtksi-source-proxy-0x56b01ba0d90-failed-to-create-vtkxdmfreader-aborting-for-debugging-purposes/6156)

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**Author:** [@milad](https://discourse.paraview.org/u/milad)\
**Replies:** 1\
**Last updated:** [January 4, 2021, 12:11pm UTC](https://discourse.paraview.org/t/vtksi-source-proxy-0x56b01ba0d90-failed-to-create-vtkxdmfreader-aborting-for-debugging-purposes/6156 "2021-01-04T12:11:53Z")

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Hi Every one! I used to use VM Ubuntu to run Paraview and I had no problem. Now I am trying to use X2Go which is much easier to use. I can open Paraview without problem but when I want to load a controlDict on it to ana…

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## [How ParaView load a directory of dicom files and render a volume?](https://discourse.paraview.org/t/how-paraview-load-a-directory-of-dicom-files-and-render-a-volume/6124)

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**Author:** [@wulicheng](https://discourse.paraview.org/u/wulicheng)\
**Replies:** 1\
**Last updated:** [January 4, 2021, 10:17am UTC](https://discourse.paraview.org/t/how-paraview-load-a-directory-of-dicom-files-and-render-a-volume/6124 "2021-01-04T10:17:19Z")

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Is the Paraview has command or action to load directory of dicom files and construct it with 3D. Does the UI has ? Can anyone tell me? The “Radiant dicom viewer” has as the flowing picture:

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## [Paraview how to load Directory?](https://discourse.paraview.org/t/paraview-how-to-load-directory/6127)

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**Author:** [@wulicheng](https://discourse.paraview.org/u/wulicheng)\
**Replies:** 1\
**Last updated:** [January 4, 2021, 10:16am UTC](https://discourse.paraview.org/t/paraview-how-to-load-directory/6127 "2021-01-04T10:16:48Z")

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I open the dialog like flowing: When I clicked OK button ,Nothing loaded！！！ It output this message：

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## [paraview trace not start](https://discourse.paraview.org/t/paraview-trace-not-start/6135)

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**Author:** [@Filipeipei](https://discourse.paraview.org/u/Filipeipei)\
**Replies:** 1\
**Last updated:** [January 4, 2021, 10:13am UTC](https://discourse.paraview.org/t/paraview-trace-not-start/6135 "2021-01-04T10:13:18Z")

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Hello, I have a problem when I try to start trace on ParaView: ERROR: In …/Remoting/ServerManager/vtkSMTrace.cxx, line 76 vtkSMTrace (0x55729dff7040): Failed to import paraview.smtrace module. Generic Warning: In …/Re…

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## [Average of multiple slices in a spanwise direction](https://discourse.paraview.org/t/average-of-multiple-slices-in-a-spanwise-direction/6163)

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**Author:** [@proxy](https://discourse.paraview.org/u/proxy)\
**Replies:** 0\
**Last updated:** [January 4, 2021, 8:29am UTC](https://discourse.paraview.org/t/average-of-multiple-slices-in-a-spanwise-direction/6163 "2021-01-04T08:29:05Z")

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Hello All, Corresponding to the thread https://discourse.paraview.org/t/averaging-in-spanwise-direction-and-plotiing-the-data/6150?u=proxy I got the idea that by creating multiple slices and averaging all those slices I…

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## [Averaging in spanwise direction and plotiing the data](https://discourse.paraview.org/t/averaging-in-spanwise-direction-and-plotiing-the-data/6150)

<div class="topic-metadata">

**Author:** [@proxy](https://discourse.paraview.org/u/proxy)\
**Replies:** 7\
**Last updated:** [January 3, 2021, 2:56pm UTC](https://discourse.paraview.org/t/averaging-in-spanwise-direction-and-plotiing-the-data/6150 "2021-01-03T14:56:47Z")

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Hi, I tried to simulate a 3D NACA aerofoil in OpenFOAM. I want the velocity profile at different section of this aerofoil. To do that I need to average the velocity field in the span wise direction and then plot the vel…

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## [Issue exporting animation using .avi format](https://discourse.paraview.org/t/issue-exporting-animation-using-avi-format/6154)

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**Author:** [@Mexican-Judo](https://discourse.paraview.org/u/Mexican-Judo)\
**Replies:** 0\
**Last updated:** [December 31, 2020, 1:41am UTC](https://discourse.paraview.org/t/issue-exporting-animation-using-avi-format/6154 "2020-12-31T01:41:08Z")

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I am unable to export .avi video. I am new to Paraview so i am not sure if i made a mistake while installing the software. I have attached the options i choose when exporting the animation as well as the error that i got…

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## [Paraview error GLIBCXX\_3.4.26 not found](https://discourse.paraview.org/t/paraview-error-glibcxx-3-4-26-not-found/6140)

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**Author:** [@Vishwamitra](https://discourse.paraview.org/u/Vishwamitra)\
**Replies:** 3\
**Last updated:** [December 30, 2020, 3:43pm UTC](https://discourse.paraview.org/t/paraview-error-glibcxx-3-4-26-not-found/6140 "2020-12-30T15:43:33Z")

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Hello all, I am new to openfom and paraview. I have installed openfoamv2006 and latest paraview (using terminal command sudo apt-get install paraview) but when I am trying to view mesh I am getting this error. I have tri…

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