# ParaView Support

**URL:** https://discourse.paraview.org/c/paraview-support/7.md?page=56

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

**Page:** 57

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## [Building error regarding Qt verison](https://discourse.paraview.org/t/building-error-regarding-qt-verison/6208)

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**Author:** [@30Kaz](https://discourse.paraview.org/u/30Kaz)\
**Replies:** 6\
**Last updated:** [January 12, 2021, 11:26am UTC](https://discourse.paraview.org/t/building-error-regarding-qt-verison/6208 "2021-01-12T11:26:45Z")

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■I was trying to build ParaView on Ubuntsu 18.04, foloowing https://gitlab.kitware.com/paraview/paraview/blob/master/Documentation/dev/build.md ■And when I executed the following, cmake -GNinja -DPARAVIEW\_USE\_PYTHON=O…

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## [.vtu file more than 5G](https://discourse.paraview.org/t/vtu-file-more-than-5g/13652)

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**Author:** [@roderaga](https://discourse.paraview.org/u/roderaga)\
**Replies:** 1\
**Last updated:** [January 9, 2024, 10:05am UTC](https://discourse.paraview.org/t/vtu-file-more-than-5g/13652 "2024-01-09T10:05:47Z")

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is there any problem to open .vtu file more than 5Gb size for windows ? Thank you Oscar

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## [OpenVDB export issues](https://discourse.paraview.org/t/openvdb-export-issues/10283)

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**Author:** [@steve\_r](https://discourse.paraview.org/u/steve_r)\
**Replies:** 3\
**Last updated:** [January 9, 2024, 9:17am UTC](https://discourse.paraview.org/t/openvdb-export-issues/10283 "2024-01-09T09:17:33Z")

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I’ve been using the new OpenVDB support in PV 5.10 for some time now with various heavy datasets. First of all, Thank you for making this available! To make it really practical for multi-channel data, I’m looking for an…

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## [I made a cad model in free cad, and generated simulation data in a separate software. It is possible to merge the data into the cad model in paraview?](https://discourse.paraview.org/t/i-made-a-cad-model-in-free-cad-and-generated-simulation-data-in-a-separate-software-it-is-possible-to-merge-the-data-into-the-cad-model-in-paraview/13613)

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**Author:** [@H\_G](https://discourse.paraview.org/u/H_G)\
**Replies:** 7\
**Last updated:** [January 9, 2024, 2:52am UTC](https://discourse.paraview.org/t/i-made-a-cad-model-in-free-cad-and-generated-simulation-data-in-a-separate-software-it-is-possible-to-merge-the-data-into-the-cad-model-in-paraview/13613 "2024-01-09T02:52:20Z")

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So i ran some simulation for a certain geometry. I modelled the geometry separately in freecad, now i’m wondering if i can put the data on top of model in paraview?

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## [How to read a .vtu file?](https://discourse.paraview.org/t/how-to-read-a-vtu-file/9234)

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**Author:** [@chengchengjing](https://discourse.paraview.org/u/chengchengjing)\
**Replies:** 2\
**Last updated:** [March 22, 2022, 6:24pm UTC](https://discourse.paraview.org/t/how-to-read-a-vtu-file/9234 "2022-03-22T18:24:17Z")

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How to read a .vtu file?

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## [type hints](https://discourse.paraview.org/t/type-hints/13647)

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**Author:** [@untereiner](https://discourse.paraview.org/u/untereiner)\
**Replies:** 0\
**Last updated:** [January 8, 2024, 3:14pm UTC](https://discourse.paraview.org/t/type-hints/13647 "2024-01-08T15:14:30Z")

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Hi, Is it possible to have type hints for paraview more precisely the decorators ? I am using vtkmodules.all to have those for vtk Mypy is complaining and I would like to not use # type: ignore Thanks in advance !

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## [error when saving animation in avi](https://discourse.paraview.org/t/error-when-saving-animation-in-avi/13269)

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**Author:** [@Eloise](https://discourse.paraview.org/u/Eloise)\
**Replies:** 5\
**Last updated:** [January 8, 2024, 10:27am UTC](https://discourse.paraview.org/t/error-when-saving-animation-in-avi/13269 "2024-01-08T10:27:51Z")

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Hello, I know there is already some issues in saving animation with ffmpeg bug i did not see the same error message I have. I installed paraview@master with spack adding the flag -DPARAVIEW\_ENABLE\_FFMPEG in my build of…

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## [Help with calculator](https://discourse.paraview.org/t/help-with-calculator/13646)

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**Author:** [@SKSoni](https://discourse.paraview.org/u/SKSoni)\
**Replies:** 0\
**Last updated:** [January 6, 2024, 8:37am UTC](https://discourse.paraview.org/t/help-with-calculator/13646 "2024-01-06T08:37:53Z")

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Hello @Kenneth\_Moreland In my case, i am using 3D CSV Data which has following columns \[ x, y, z, u1, u2, u3, T\] and I have followed the steps as you described but unfortunately an error message is coming up "undefine…

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## [How to generate streamline with CSV file](https://discourse.paraview.org/t/how-to-generate-streamline-with-csv-file/9392)

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**Author:** [@UNICO1](https://discourse.paraview.org/u/UNICO1)\
**Replies:** 4\
**Last updated:** [April 29, 2022, 2:04am UTC](https://discourse.paraview.org/t/how-to-generate-streamline-with-csv-file/9392 "2022-04-29T02:04:19Z")

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Dear all I would like to generate streamline with my CFD result However, I can’t apply ‘Streamline Tracer fileter’ Does anyone can help me this kinds of problem? I saved my data to csv file format

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## [Find maximum and minimum of a scalar field](https://discourse.paraview.org/t/find-maximum-and-minimum-of-a-scalar-field/4522)

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**Author:** [@Gambenius](https://discourse.paraview.org/u/Gambenius)\
**Replies:** 16\
**Last updated:** [January 5, 2024, 9:32pm UTC](https://discourse.paraview.org/t/find-maximum-and-minimum-of-a-scalar-field/4522 "2024-01-05T21:32:26Z")

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Hi everyone, i have a transient simulation and i need to normalize a scalar field for every step so that the range is always \[-1,1\], is there any way trough the calculator to do this? I’ll be applying isoVolumes so ever…

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## [Reorder CGNS variables using ParaView](https://discourse.paraview.org/t/reorder-cgns-variables-using-paraview/13636)

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**Author:** [@6482a8254eb5245ba53d](https://discourse.paraview.org/u/6482a8254eb5245ba53d)\
**Replies:** 0\
**Last updated:** [January 5, 2024, 6:33pm UTC](https://discourse.paraview.org/t/reorder-cgns-variables-using-paraview/13636 "2024-01-05T18:33:37Z")

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I have a CGNS file that I use to restart a simulation. Is there a way to create a new CGNS file using Paraview to reorder the variables before setting it as a restart point? For example, in the original CGNS file, the v…

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## [Plot over sorted line](https://discourse.paraview.org/t/plot-over-sorted-line/13629)

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**Author:** [@KB92](https://discourse.paraview.org/u/KB92)\
**Replies:** 5\
**Last updated:** [January 5, 2024, 2:45pm UTC](https://discourse.paraview.org/t/plot-over-sorted-line/13629 "2024-01-05T14:45:29Z")

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Hello, I am posting this again as I forgot to upload images in my previous post. I have data in .vtk file which gives surface plot as seen in picture 1. 2nd picture is the contour plot of the 1st one. Now I need to…

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## [Plot according to the content of the dimensions and not the indices](https://discourse.paraview.org/t/plot-according-to-the-content-of-the-dimensions-and-not-the-indices/13575)

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**Author:** [@Methil](https://discourse.paraview.org/u/Methil)\
**Replies:** 2\
**Last updated:** [January 5, 2024, 1:12pm UTC](https://discourse.paraview.org/t/plot-according-to-the-content-of-the-dimensions-and-not-the-indices/13575 "2024-01-05T13:12:18Z")

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Hello again, My problem is that my z axis is like that (0, 1, 4, 16 …) so it is not composed of regularely spaced points. I want to plot my data in 3D but according to the coordinates of the z dimensions not according …

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## [Modifying the vtk files](https://discourse.paraview.org/t/modifying-the-vtk-files/13631)

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**Author:** [@KB92](https://discourse.paraview.org/u/KB92)\
**Replies:** 3\
**Last updated:** [January 5, 2024, 12:28pm UTC](https://discourse.paraview.org/t/modifying-the-vtk-files/13631 "2024-01-05T12:28:34Z")

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I have some vtk files with point data and I want to modify data over some points (changing values or may be multiplying by some factor). After modifying I want to save this as a new .vtk again. Is there a way of doing th…

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## [VTK - separate mesh and data files](https://discourse.paraview.org/t/vtk-separate-mesh-and-data-files/10134)

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**Author:** [@nikic](https://discourse.paraview.org/u/nikic)\
**Replies:** 7\
**Last updated:** [January 5, 2024, 8:33am UTC](https://discourse.paraview.org/t/vtk-separate-mesh-and-data-files/10134 "2024-01-05T08:33:50Z")

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Hi! I am running a simulation on a static, unstructured mesh. Currently I output the variables at every timestep using .vtu files, but it seems wasteful to output the mesh points & connectivity that many times since the …

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## [How to render particles into fluid in paraview?](https://discourse.paraview.org/t/how-to-render-particles-into-fluid-in-paraview/13630)

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**Author:** [@xin](https://discourse.paraview.org/u/xin)\
**Replies:** 1\
**Last updated:** [January 4, 2024, 8:23am UTC](https://discourse.paraview.org/t/how-to-render-particles-into-fluid-in-paraview/13630 "2024-01-04T08:23:52Z")

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Hello, I am new user in Paraview. I got results from Meshfree. It shows the fluid or droplets are in particles. How can I render the particles into fluid which looks like water in life? Thank you.

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## [Connection failed during handshake | vtkSocketCommunicator mismatch](https://discourse.paraview.org/t/connection-failed-during-handshake-vtksocketcommunicator-mismatch/13623)

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**Author:** [@Zoelle\_F\_Wong](https://discourse.paraview.org/u/Zoelle_F_Wong)\
**Replies:** 4\
**Last updated:** [January 4, 2024, 8:20am UTC](https://discourse.paraview.org/t/connection-failed-during-handshake-vtksocketcommunicator-mismatch/13623 "2024-01-04T08:20:58Z")

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Hello, I’m trying to visualize data remotely on a server from my work computer. I have to ssh twice to access my data. I’ve followed the instructions on Paraview on how to set up a forward connection over an ssh Tunnel…

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## [Utilizing System Python for Library Installation in Superbuild Process](https://discourse.paraview.org/t/utilizing-system-python-for-library-installation-in-superbuild-process/13491)

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**Author:** [@HollowSun0](https://discourse.paraview.org/u/HollowSun0)\
**Replies:** 3\
**Last updated:** [January 3, 2024, 4:11pm UTC](https://discourse.paraview.org/t/utilizing-system-python-for-library-installation-in-superbuild-process/13491 "2024-01-03T16:11:44Z")

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During the superbuild process, Python and the necessary packages are installed. However, within my Docker container, I wish to use my own Python. To achieve this, I typically set USE\_SYSTEM\_python3=OFF. Subsequently, I’…

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## [How to open a group of obj files?](https://discourse.paraview.org/t/how-to-open-a-group-of-obj-files/8672)

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**Author:** [@sharaborin](https://discourse.paraview.org/u/sharaborin)\
**Replies:** 9\
**Last updated:** [January 3, 2024, 8:44am UTC](https://discourse.paraview.org/t/how-to-open-a-group-of-obj-files/8672 "2024-01-03T08:44:54Z")

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Hello! I have a bunch of files like this: scene\_110\_0.obj scene\_110\_1.obj scene\_110\_2.obj scene\_110\_3.obj how to open them a group of files? Right now the paraview opens only the first file: scene\_110\_0.obj. Simil…

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## [Reading Data from HDF5 File](https://discourse.paraview.org/t/reading-data-from-hdf5-file/2566)

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**Author:** [@Pat](https://discourse.paraview.org/u/Pat)\
**Replies:** 1\
**Last updated:** [September 17, 2019, 4:02am UTC](https://discourse.paraview.org/t/reading-data-from-hdf5-file/2566 "2019-09-17T04:02:52Z")

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Hello, Has anyone successfully read data from an HDF5 file? I am having difficulties reading in my data which contains ~100 data slices. I can put my H5 into Paraviews pipeline, it will recognize the path within the H5 f…

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## [Can't start Paraview any more: malloc(): invalid size (unsorted)](https://discourse.paraview.org/t/cant-start-paraview-any-more-malloc-invalid-size-unsorted/13611)

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**Author:** [@trilbytim](https://discourse.paraview.org/u/trilbytim)\
**Replies:** 9\
**Last updated:** [January 2, 2024, 10:19pm UTC](https://discourse.paraview.org/t/cant-start-paraview-any-more-malloc-invalid-size-unsorted/13611 "2024-01-02T22:19:46Z")

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I’m on Ubuntu 22.04. I have Paraview 5.6 installed via OpenFOAM, and that still works, however I’ve mostly been using version 5.12.0-RC1-MPI-Linux-Python3.10-x86\_64 that I just run from the pre-compiled binary. This has …

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## [FDSReader / vtkPartitionedDataSetCollection](https://discourse.paraview.org/t/fdsreader-vtkpartitioneddatasetcollection/13599)

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**Author:** [@fire35](https://discourse.paraview.org/u/fire35)\
**Replies:** 7\
**Last updated:** [January 2, 2024, 2:35pm UTC](https://discourse.paraview.org/t/fdsreader-vtkpartitioneddatasetcollection/13599 "2024-01-02T14:35:29Z")

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Hi, I am trying to use paraview to process the results of the Fire Dynamics Simulator (FDS). Recently, a new reader has been implemented in paraview and I am trying to use it. I set a simple case of a convective heat t…

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## [understand the time-evolution of some variables by using plot Data over time](https://discourse.paraview.org/t/understand-the-time-evolution-of-some-variables-by-using-plot-data-over-time/13622)

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**Author:** [@Rohit\_Singh](https://discourse.paraview.org/u/Rohit_Singh)\
**Replies:** 3\
**Last updated:** [January 2, 2024, 11:02am UTC](https://discourse.paraview.org/t/understand-the-time-evolution-of-some-variables-by-using-plot-data-over-time/13622 "2024-01-02T11:02:06Z")

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Hello, I have performed a transient simulation in fluent and stored the data in .cgns format after every 1 sec. So, i have stored 100 such .cgns files for 100 s simulation data. My objective of recording the data in .cg…

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## [Issue for changing representation in self build paraview](https://discourse.paraview.org/t/issue-for-changing-representation-in-self-build-paraview/13600)

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**Author:** [@zhe](https://discourse.paraview.org/u/zhe)\
**Replies:** 3\
**Last updated:** [January 2, 2024, 8:58am UTC](https://discourse.paraview.org/t/issue-for-changing-representation-in-self-build-paraview/13600 "2024-01-02T08:58:05Z")

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Hi, everyone: I try to build a Paraview by myself on mac M1. But it failed to change the representation As shown in attached figure, I loaded a data from source, and changed the representation into surface, but the ren…

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## [Vector field decomposed in tangential and normal component along edge (dot product)](https://discourse.paraview.org/t/vector-field-decomposed-in-tangential-and-normal-component-along-edge-dot-product/13100)

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**Author:** [@zeljkoT](https://discourse.paraview.org/u/zeljkoT)\
**Replies:** 4\
**Last updated:** [January 2, 2024, 8:24am UTC](https://discourse.paraview.org/t/vector-field-decomposed-in-tangential-and-normal-component-along-edge-dot-product/13100 "2024-01-02T08:24:16Z")

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Hi all I would like to split the 2D vector field along the edge of two materials in its tangential and normal parts. The normal and tangential vectors on the lower material I did get with following filters: 1) Threshol…

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## [Reading .tif DEM data from ArcPro into Paraview](https://discourse.paraview.org/t/reading-tif-dem-data-from-arcpro-into-paraview/13536)

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**Author:** [@jackpoole07](https://discourse.paraview.org/u/jackpoole07)\
**Replies:** 8\
**Last updated:** [January 2, 2024, 7:46am UTC](https://discourse.paraview.org/t/reading-tif-dem-data-from-arcpro-into-paraview/13536 "2024-01-02T07:46:48Z")

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Hello, New to paraview and I am attempting to create a 3D model of DEM data I have worked up from ARC Pro. When inserting the .tif file it automates a background that autopopulates an elevation of 0 This then impacts…

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## [Symbol not found in flat namespace (\_PyErr\_Clear) when build ParaView with python](https://discourse.paraview.org/t/symbol-not-found-in-flat-namespace-pyerr-clear-when-build-paraview-with-python/13614)

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**Author:** [@zhe](https://discourse.paraview.org/u/zhe)\
**Replies:** 3\
**Last updated:** [January 1, 2024, 4:54pm UTC](https://discourse.paraview.org/t/symbol-not-found-in-flat-namespace-pyerr-clear-when-build-paraview-with-python/13614 "2024-01-01T16:54:27Z")

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Hi, dear ParaView experts: I try to build ParaView based on document here, and I use MacOS. However, I got this error message when I execute paraview $ ./paraview dyld\[65137\]: symbol not found in flat namespace (\_PyEr…

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## [Need Help Extracting Streamline Data in ParaView](https://discourse.paraview.org/t/need-help-extracting-streamline-data-in-paraview/13608)

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**Author:** [@6482a8254eb5245ba53d](https://discourse.paraview.org/u/6482a8254eb5245ba53d)\
**Replies:** 6\
**Last updated:** [December 30, 2023, 9:20pm UTC](https://discourse.paraview.org/t/need-help-extracting-streamline-data-in-paraview/13608 "2023-12-30T21:20:18Z")

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Hello everyone, I’m currently facing an issue while attempting to extract streamline data in ParaView. Typically, I would use the point cloud feature of the stream tracer and reduce the radius to isolate a streamline. H…

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## [Help calculating OSI?](https://discourse.paraview.org/t/help-calculating-osi/13449)

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**Author:** [@annap](https://discourse.paraview.org/u/annap)\
**Replies:** 1\
**Last updated:** [December 27, 2023, 3:09pm UTC](https://discourse.paraview.org/t/help-calculating-osi/13449 "2023-12-27T15:09:10Z")

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Could someone please help me figure out how to calculate OSI? I have WSS vectors for every point for every timestep, and I need to find OSI (I believe scalars) over the cardiac cycle (0 to T) for every point. I can’t fig…

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## [Reading CGNS formats into ParaView](https://discourse.paraview.org/t/reading-cgns-formats-into-paraview/3358)

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**Author:** [@tejas.canchi](https://discourse.paraview.org/u/tejas.canchi)\
**Replies:** 6\
**Last updated:** [January 20, 2020, 3:54pm UTC](https://discourse.paraview.org/t/reading-cgns-formats-into-paraview/3358 "2020-01-20T15:54:53Z")

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Hello I have a CGNS file generated from ANSYS CFX. I want to open it up in ParaView to visualize vectors. I am running Paraview 5.2 on Mint. Is there a plugin to do this? I dont see the format listed in the open file di…

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