# ParaView Support

**URL:** https://discourse.paraview.org/c/paraview-support/7.md?page=83

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

**Page:** 84

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## [Logic behind "Warp By Vector" Reset Scalar Factor button](https://discourse.paraview.org/t/logic-behind-warp-by-vector-reset-scalar-factor-button/11482)

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**Author:** [@Albers\_Steven](https://discourse.paraview.org/u/Albers_Steven)\
**Replies:** 8\
**Last updated:** [February 28, 2023, 3:53am UTC](https://discourse.paraview.org/t/logic-behind-warp-by-vector-reset-scalar-factor-button/11482 "2023-02-28T03:53:00Z")

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Hi, I’m using a file to use this “Warp By Vector” filter function. When a click this filter, it give me a default scalar factor value of number 1. But when I click reset button, it picked a reasonable value for me, …

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## [Linking Paraview and OpenSeesPy](https://discourse.paraview.org/t/linking-paraview-and-openseespy/11522)

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**Author:** [@Marco\_Uzielli](https://discourse.paraview.org/u/Marco_Uzielli)\
**Replies:** 0\
**Last updated:** [February 27, 2023, 10:38pm UTC](https://discourse.paraview.org/t/linking-paraview-and-openseespy/11522 "2023-02-27T22:38:30Z")

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Hello, I am attempting to visualize OpenSeesPy-related outputs in Paraview. The OpenSeesPy documentation illustrates a PVD recorder, but my code is not working properly. Would anybody be able to provide a working illustr…

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## [Smooth](https://discourse.paraview.org/t/smooth/11520)

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**Author:** [@saman89](https://discourse.paraview.org/u/saman89)\
**Replies:** 0\
**Last updated:** [February 27, 2023, 10:07pm UTC](https://discourse.paraview.org/t/smooth/11520 "2023-02-27T22:07:48Z")

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which smooth method used to smooth? bubble interface in multiphase case. contour curve.

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## [particle tracing in a 2D-axisymmetric](https://discourse.paraview.org/t/particle-tracing-in-a-2d-axisymmetric/11517)

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**Author:** [@saman89](https://discourse.paraview.org/u/saman89)\
**Replies:** 0\
**Last updated:** [February 27, 2023, 9:57pm UTC](https://discourse.paraview.org/t/particle-tracing-in-a-2d-axisymmetric/11517 "2023-02-27T21:57:57Z")

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Particle tracing not work in the 2D-axisymmetric, when the seed source chooses on the axisymmetric axis. Is there any solution?

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## [is there a smoothing filter (e.g. Savitzky Golay) for finite element fields?](https://discourse.paraview.org/t/is-there-a-smoothing-filter-e-g-savitzky-golay-for-finite-element-fields/11513)

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**Author:** [@simonw](https://discourse.paraview.org/u/simonw)\
**Replies:** 0\
**Last updated:** [February 27, 2023, 4:54pm UTC](https://discourse.paraview.org/t/is-there-a-smoothing-filter-e-g-savitzky-golay-for-finite-element-fields/11513 "2023-02-27T16:54:11Z")

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I am working with noisy a displacement field (two components) computed via the FEM. Is there a filter in Paraview that can smooth finite element fields, i.e. given a solution vector, returns the smoothed solution vector…

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## [cellZone not shown in paraView mesh list](https://discourse.paraview.org/t/cellzone-not-shown-in-paraview-mesh-list/11462)

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**Author:** [@shizuka](https://discourse.paraview.org/u/shizuka)\
**Replies:** 6\
**Last updated:** [February 27, 2023, 1:28pm UTC](https://discourse.paraview.org/t/cellzone-not-shown-in-paraview-mesh-list/11462 "2023-02-27T13:28:43Z")

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Hi, I have a question of the Mesh Regions in ParaView. I tried to simulate a porous media in OpenFOAM, it involves a topoSetDict. According to the Youtube tutorial, there is a cellZone group in the Mesh Regions tab. But…

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## [strange looking mesh - like one mesh overlay on top of another](https://discourse.paraview.org/t/strange-looking-mesh-like-one-mesh-overlay-on-top-of-another/11498)

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**Author:** [@quarkz](https://discourse.paraview.org/u/quarkz)\
**Replies:** 1\
**Last updated:** [February 27, 2023, 2:40am UTC](https://discourse.paraview.org/t/strange-looking-mesh-like-one-mesh-overlay-on-top-of-another/11498 "2023-02-27T02:40:00Z")

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Hi, I’m using snappyhexMesh to create a 2D (one layer) mesh with an airfoil inside. The mesh looks strange, like one mesh overlay on top of another. It looks ok when loaded, but once I zoom in and out, the strange thing…

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## [Time support in VTK/Paraview](https://discourse.paraview.org/t/time-support-in-vtk-paraview/6878)

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**Author:** [@pevoz](https://discourse.paraview.org/u/pevoz)\
**Replies:** 3\
**Last updated:** [February 27, 2023, 2:15am UTC](https://discourse.paraview.org/t/time-support-in-vtk-paraview/6878 "2023-02-27T02:15:47Z")

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From my C++ code for a scientific simulation, I’m exporting .vtp files to be visualized with paraview. Until now, I was using a constant time step length so the task was easy: I just named my files as out\_i.vtp, imported…

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## [How to set value outside of domain with resample-to-image filter?](https://discourse.paraview.org/t/how-to-set-value-outside-of-domain-with-resample-to-image-filter/11501)

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**Author:** [@Behzad](https://discourse.paraview.org/u/Behzad)\
**Replies:** 0\
**Last updated:** [February 26, 2023, 7:40am UTC](https://discourse.paraview.org/t/how-to-set-value-outside-of-domain-with-resample-to-image-filter/11501 "2023-02-26T07:40:46Z")

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Dear all, I would appreciate to know if there is an easy way to change the default value in the areas outside of the domain when using the resample-to-image filter in paraview? Currently, I got zero for the outside regi…

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## [Displaying results only on the selected surface inside the cavity](https://discourse.paraview.org/t/displaying-results-only-on-the-selected-surface-inside-the-cavity/11489)

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**Author:** [@FEngineer](https://discourse.paraview.org/u/FEngineer)\
**Replies:** 1\
**Last updated:** [February 25, 2023, 6:33pm UTC](https://discourse.paraview.org/t/displaying-results-only-on-the-selected-surface-inside-the-cavity/11489 "2023-02-25T18:33:41Z")

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Hi, I have results from OpenFOAM and I’d like to display the pressure distribution only on the surface inside the cavity (I marked it with arrow): So I would have to extract the cells belonging to it (I assume that …

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## [Eigenvalue Calculation using Python Programming Filter](https://discourse.paraview.org/t/eigenvalue-calculation-using-python-programming-filter/11490)

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**Author:** [@Gening\_Dong](https://discourse.paraview.org/u/Gening_Dong)\
**Replies:** 0\
**Last updated:** [February 24, 2023, 10:03pm UTC](https://discourse.paraview.org/t/eigenvalue-calculation-using-python-programming-filter/11490 "2023-02-24T22:03:26Z")

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Hi, I want to calculate the principal strains of a 3D data. Here’s my workflow: Use ComputeDerivatives to get the strain tensor from the displacement. Use ‘Programming Filter’ and the code is from Paraview Wiki: http…

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## [Evaluation of a volume integral over a 2D plane](https://discourse.paraview.org/t/evaluation-of-a-volume-integral-over-a-2d-plane/11488)

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**Author:** [@Captain\_Convergence](https://discourse.paraview.org/u/Captain_Convergence)\
**Replies:** 0\
**Last updated:** [February 24, 2023, 5:01pm UTC](https://discourse.paraview.org/t/evaluation-of-a-volume-integral-over-a-2d-plane/11488 "2023-02-24T17:01:16Z")

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Dear support, I need to evaluate the following volume integral over a 2D surface obtained using the threshold filter: I have already obtained the divergence of f\_vw term and the only thing left is to integrate this …

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## [Default settings of legend not saved?](https://discourse.paraview.org/t/default-settings-of-legend-not-saved/11480)

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**Author:** [@PetrKryslUCSD](https://discourse.paraview.org/u/PetrKryslUCSD)\
**Replies:** 2\
**Last updated:** [February 24, 2023, 4:26pm UTC](https://discourse.paraview.org/t/default-settings-of-legend-not-saved/11480 "2023-02-24T16:26:58Z")

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I am setting the position of the legend as Then I click the button in the lower-left corner of the dialog to save as default. Displaying a new field switches the legend position to where it was before (lower right …

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## [Show a list of string in a python reader](https://discourse.paraview.org/t/show-a-list-of-string-in-a-python-reader/11477)

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**Author:** [@Juan\_Jose\_Casafranca](https://discourse.paraview.org/u/Juan_Jose_Casafranca)\
**Replies:** 10\
**Last updated:** [February 24, 2023, 12:55pm UTC](https://discourse.paraview.org/t/show-a-list-of-string-in-a-python-reader/11477 "2023-02-24T12:55:18Z")

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I have a python reader reading an HDF5 and I have added a property to allow to select which group of the HDF5 the user wants to read. However, since it may be complicated to know the correct path of the group, I have add…

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## [vtkXMLMultiBLockDataReader and simple.XMLMultiBLockDataReader](https://discourse.paraview.org/t/vtkxmlmultiblockdatareader-and-simple-xmlmultiblockdatareader/11485)

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**Author:** [@4leaf321](https://discourse.paraview.org/u/4leaf321)\
**Replies:** 0\
**Last updated:** [February 24, 2023, 10:38am UTC](https://discourse.paraview.org/t/vtkxmlmultiblockdatareader-and-simple-xmlmultiblockdatareader/11485 "2023-02-24T10:38:04Z")

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Now I’m constructing my server for reading simulation result, result from LS Dyna d3plot. When I import D3PLOT in paraview and export to vtm file, file structure is as follows fileName\_1.vtm (time-step1) fileName\_1…

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## [Texture animation](https://discourse.paraview.org/t/texture-animation/11457)

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**Author:** [@arthus701](https://discourse.paraview.org/u/arthus701)\
**Replies:** 1\
**Last updated:** [February 23, 2023, 2:02pm UTC](https://discourse.paraview.org/t/texture-animation/11457 "2023-02-23T14:02:22Z")

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I have multiple images that I’d like to texture map to a sphere and change with time. What I get from this post Draping a sequence of textures on an evolving surface in an animation is that simply loading the images as a…

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## [Add a string property to a python reader](https://discourse.paraview.org/t/add-a-string-property-to-a-python-reader/11471)

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**Author:** [@Juan\_Jose\_Casafranca](https://discourse.paraview.org/u/Juan_Jose_Casafranca)\
**Replies:** 2\
**Last updated:** [February 23, 2023, 9:55am UTC](https://discourse.paraview.org/t/add-a-string-property-to-a-python-reader/11471 "2023-02-23T09:55:16Z")

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I have a custom reader written in Python which loads an HDF5 file and generates a vtkMultiBlockDataSet with some vtkUnstructedGrid on the leafs of the hierarchy. However, this can get too slow, as the file may contain a …

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## [Aspect Ratio](https://discourse.paraview.org/t/aspect-ratio/11473)

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**Author:** [@rafia2](https://discourse.paraview.org/u/rafia2)\
**Replies:** 1\
**Last updated:** [February 22, 2023, 9:53pm UTC](https://discourse.paraview.org/t/aspect-ratio/11473 "2023-02-22T21:53:02Z")

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Hi, I have a domain with a length of 21m and a width of 35mm. Because of very small width it is hard to see the various features of the domain. If I zoom it then I can not see the whole length. How can I change the sca…

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## [Is it possible to add labels to contour lines?](https://discourse.paraview.org/t/is-it-possible-to-add-labels-to-contour-lines/1466)

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**Author:** [@gromaxe](https://discourse.paraview.org/u/gromaxe)\
**Replies:** 23\
**Last updated:** [February 22, 2023, 3:13pm UTC](https://discourse.paraview.org/t/is-it-possible-to-add-labels-to-contour-lines/1466 "2023-02-22T15:13:18Z")

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Hello everyone! I’m trying to make a visualization of ocean and i’m stuck at labeling contour lines. For one frame i can add them manually via Text source. Is there any way to do it automatically? Expectation: Re…

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## [python script to reset glyph scale factor using current data values](https://discourse.paraview.org/t/python-script-to-reset-glyph-scale-factor-using-current-data-values/11464)

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**Author:** [@ahmad\_alminnawi](https://discourse.paraview.org/u/ahmad_alminnawi)\
**Replies:** 0\
**Last updated:** [February 22, 2023, 12:29pm UTC](https://discourse.paraview.org/t/python-script-to-reset-glyph-scale-factor-using-current-data-values/11464 "2023-02-22T12:29:07Z")

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Hi, I am using the python tracing feature to write a script that I will use for multiple models but I want to reset the glyph scale factor with respect to each specific model. using the user interface it is simple and …

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## [How to create surface vectors from components in 2 different .vtk files](https://discourse.paraview.org/t/how-to-create-surface-vectors-from-components-in-2-different-vtk-files/11435)

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**Author:** [@jones123](https://discourse.paraview.org/u/jones123)\
**Replies:** 3\
**Last updated:** [February 22, 2023, 8:41am UTC](https://discourse.paraview.org/t/how-to-create-surface-vectors-from-components-in-2-different-vtk-files/11435 "2023-02-22T08:41:21Z")

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Hi all, I am rather new to Paraview and have been reading a bit about vector plotting techniques to indicate flow direction and velocity magnitudes. I am quite stuck, however, with my 2 files. These are both .vtk files…

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## [Calculate \[value of the current timestep - value of the previous timestep\] of a variable](https://discourse.paraview.org/t/calculate-value-of-the-current-timestep-value-of-the-previous-timestep-of-a-variable/5250)

<div class="topic-metadata">

**Author:** [@leopessanha](https://discourse.paraview.org/u/leopessanha)\
**Replies:** 4\
**Last updated:** [February 22, 2023, 4:09am UTC](https://discourse.paraview.org/t/calculate-value-of-the-current-timestep-value-of-the-previous-timestep-of-a-variable/5250 "2023-02-22T04:09:00Z")

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Hi! I am creating a rain precipitation vizualization with ParaView and the hourly variable that stores the information is cumulative Timestep 0 = Timestep 0 Timestep 1 = Timestep 0 + Timestep 1 Timestep 2 = Timestep …

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## [Interpolation errors](https://discourse.paraview.org/t/interpolation-errors/11452)

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**Author:** [@Frankx9](https://discourse.paraview.org/u/Frankx9)\
**Replies:** 5\
**Last updated:** [February 21, 2023, 6:13pm UTC](https://discourse.paraview.org/t/interpolation-errors/11452 "2023-02-21T18:13:09Z")

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Hi, I have created multiple slices in my domain and I’m trying to interpolate the value of my variables in slice2 to ... sliceN onto slice1 to have a unique grid which defines those values I’m using ResampleWithDatase…

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## [pvbatch run on GPU](https://discourse.paraview.org/t/pvbatch-run-on-gpu/11441)

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**Author:** [@Frankx9](https://discourse.paraview.org/u/Frankx9)\
**Replies:** 3\
**Last updated:** [February 21, 2023, 8:04am UTC](https://discourse.paraview.org/t/pvbatch-run-on-gpu/11441 "2023-02-21T08:04:35Z")

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Hi, I’m trying to run my pvbatch script on a GPU but with no success, I’m using: pvbatch --egl-device-index=$CUDA\_VISIBLE\_DEVICES test.py and I get: e\[0me\[31m( 0.525s) \[pvbatch \] :0 …

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## [3D Lasso on volume](https://discourse.paraview.org/t/3d-lasso-on-volume/11454)

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**Author:** [@andreahmed](https://discourse.paraview.org/u/andreahmed)\
**Replies:** 0\
**Last updated:** [February 21, 2023, 12:03am UTC](https://discourse.paraview.org/t/3d-lasso-on-volume/11454 "2023-02-21T00:03:01Z")

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Hello, I’m looking for an algorithm or an example for a 3D Lasso on 3D Volume. I was looking for VtkVolumePicker class, but in the example there is no volume that is input into that class, all I see is picker.Pick(x,y,…

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## [Different results on MacOS and remote connection](https://discourse.paraview.org/t/different-results-on-macos-and-remote-connection/11436)

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**Author:** [@Frankx9](https://discourse.paraview.org/u/Frankx9)\
**Replies:** 5\
**Last updated:** [February 20, 2023, 10:58pm UTC](https://discourse.paraview.org/t/different-results-on-macos-and-remote-connection/11436 "2023-02-20T22:58:22Z")

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Hi, I’m running a clean to grid filter to extract a surface and I’m getting two different results if I run the algorithm on my laptop and on remote See the spurious zone extracted on the leading edge Why this h…

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## [surface LIC unsteady problems](https://discourse.paraview.org/t/surface-lic-unsteady-problems/11448)

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**Author:** [@dleon](https://discourse.paraview.org/u/dleon)\
**Replies:** 0\
**Last updated:** [February 20, 2023, 12:45pm UTC](https://discourse.paraview.org/t/surface-lic-unsteady-problems/11448 "2023-02-20T12:45:19Z")

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Hi, I am using surface LIC to visualize the streamlines of the fluid in an unsteady problem, and I am wondering if that is correct or if surface LIC represent the streamlines only at steady conditions… Is it ok use sur…

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## [Crashes in Client Server Mode](https://discourse.paraview.org/t/crashes-in-client-server-mode/11426)

<div class="topic-metadata">

**Author:** [@Frankx9](https://discourse.paraview.org/u/Frankx9)\
**Replies:** 19\
**Last updated:** [February 20, 2023, 8:20am UTC](https://discourse.paraview.org/t/crashes-in-client-server-mode/11426 "2023-02-20T08:20:52Z")

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Hi, I’m running paraview in client server mode but whenever I try to load any solution (.vtu) the server side always crashes and I get the following error message on my laptop whilst on server side I get the followi…

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## [How do I use the docker image of paraview](https://discourse.paraview.org/t/how-do-i-use-the-docker-image-of-paraview/11438)

<div class="topic-metadata">

**Author:** [@fieldofnodes](https://discourse.paraview.org/u/fieldofnodes)\
**Replies:** 1\
**Last updated:** [February 20, 2023, 8:19am UTC](https://discourse.paraview.org/t/how-do-i-use-the-docker-image-of-paraview/11438 "2023-02-20T08:19:00Z")

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I would like to run the docker image of paarview on my ubuntu machine instead of installing paraview. My reason for doing this is the latest version of paraview (5.10) does not run my psvm files (needs 5.5/5.6). I am ru…

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## [CLI or script based paraview execution](https://discourse.paraview.org/t/cli-or-script-based-paraview-execution/11047)

<div class="topic-metadata">

**Author:** [@fieldofnodes](https://discourse.paraview.org/u/fieldofnodes)\
**Replies:** 3\
**Last updated:** [February 20, 2023, 8:05am UTC](https://discourse.paraview.org/t/cli-or-script-based-paraview-execution/11047 "2023-02-20T08:05:11Z")

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Hi all, I have been using ParaView lightly for a few years. I want to make a process more automated. Basically I run a script in c++ and get two .pvd files that I use with a .psvm file. I have multiple files and I wa…

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