# Top

**URL:** https://discourse.paraview.org/top.md?page=57&period=all

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**Page:** 58

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## [Visualize the difference between two mesh points](https://discourse.paraview.org/t/visualize-the-difference-between-two-mesh-points/6748)

<div class="topic-metadata">

**Author:** [@chathu](https://discourse.paraview.org/u/chathu)\
**Replies:** 1\
**Last updated:** [March 20, 2021, 11:59am UTC](https://discourse.paraview.org/t/visualize-the-difference-between-two-mesh-points/6748 "2021-03-20T11:59:11Z")

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I have two volumetric liver meshes in .vtk format (i.e. ground-truth and predicted versions) and now I want to plot the error i.e., for example, the difference between the ground-truth and the predicted liver meshes on t…

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## [View multiple data arrays at once from a single file](https://discourse.paraview.org/t/view-multiple-data-arrays-at-once-from-a-single-file/2770)

<div class="topic-metadata">

**Author:** [@henry](https://discourse.paraview.org/u/henry)\
**Replies:** 1\
**Last updated:** [October 15, 2019, 3:05pm UTC](https://discourse.paraview.org/t/view-multiple-data-arrays-at-once-from-a-single-file/2770 "2019-10-15T15:05:46Z")

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Hello, I am trying to view multiple data arrays in ParaView from a single pvtu file, but I can’t figure it out. Is this possible? For example, can I enable opacity mapping and use two color maps for two different data a…

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## [Turn off Light Kit through python](https://discourse.paraview.org/t/turn-off-light-kit-through-python/8988)

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**Author:** [@bastian](https://discourse.paraview.org/u/bastian)\
**Replies:** 4\
**Last updated:** [February 17, 2022, 10:14am UTC](https://discourse.paraview.org/t/turn-off-light-kit-through-python/8988 "2022-02-17T10:14:25Z")

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I am adopting a script-only workflow to free myself of the burden to create and update those non-human-readable state files. In this context: How can I modify (or simply disable) the Light Kit through python? Is it pos…

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## [Documentation for Python in Paraview](https://discourse.paraview.org/t/documentation-for-python-in-paraview/3234)

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**Author:** [@Qkon](https://discourse.paraview.org/u/Qkon)\
**Replies:** 3\
**Last updated:** [January 29, 2020, 3:23pm UTC](https://discourse.paraview.org/t/documentation-for-python-in-paraview/3234 "2020-01-29T15:23:47Z")

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Hi, I am trying to create multiple views using PyPython. Is there any documentation for Python in Paraview, especially for function CreateView? I read about this function in tutorial: https://www.paraview.org/Wiki/images…

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## [Paraview superbuild problem](https://discourse.paraview.org/t/paraview-superbuild-problem/1418)

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**Author:** [@ademaio](https://discourse.paraview.org/u/ademaio)\
**Replies:** 5\
**Last updated:** [March 12, 2019, 12:37pm UTC](https://discourse.paraview.org/t/paraview-superbuild-problem/1418 "2019-03-12T12:37:19Z")

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Hi, I’m trying to build Paraview 5.6 (master) on an openSUSE-Leap-42.3 vm (host windows) with CMake v3.13.4 It seems to me that the compiling order of the prerequisites of Paraview (which compilation has still not begun…

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## [Using WarpbyVector in python script](https://discourse.paraview.org/t/using-warpbyvector-in-python-script/10403)

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**Author:** [@ChiaYoung96](https://discourse.paraview.org/u/ChiaYoung96)\
**Replies:** 6\
**Last updated:** [October 12, 2022, 8:48am UTC](https://discourse.paraview.org/t/using-warpbyvector-in-python-script/10403 "2022-10-12T08:48:02Z")

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Hello everyone, I wanted to implement a python script, which will deform a “.vtu” mesh by a vector called “Displacement” that I saved from another “.vtu” and stored as an array of \[3\*number of points\]. The two meshes ha…

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## [\[SEGMENTATION FAULT (CORE DUMPED)\] Python Programmable Filter](https://discourse.paraview.org/t/segmentation-fault-core-dumped-python-programmable-filter/2618)

<div class="topic-metadata">

**Author:** [@dolesch](https://discourse.paraview.org/u/dolesch)\
**Replies:** 4\
**Last updated:** [June 7, 2021, 2:47pm UTC](https://discourse.paraview.org/t/segmentation-fault-core-dumped-python-programmable-filter/2618 "2021-06-07T14:47:11Z")

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Hi all, i tried to work through the tutorial for Python Programmable Filter, but unfortunately I got an error from the very beginning. After applying a Programmable filter paraview crashed and indicated a segmentation f…

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## [UNSTRUCTURED\_GRID: Points Gaussian OK. But Contour failed.](https://discourse.paraview.org/t/unstructured-grid-points-gaussian-ok-but-contour-failed/6053)

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**Author:** [@Giovanni](https://discourse.paraview.org/u/Giovanni)\
**Replies:** 4\
**Last updated:** [December 14, 2020, 9:40pm UTC](https://discourse.paraview.org/t/unstructured-grid-points-gaussian-ok-but-contour-failed/6053 "2020-12-14T21:40:29Z")

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Can ParaView render an isosurface = 1 from the UNSTRUCTURED\_GRID attached? “Points Gaussian” represents it correctly (screen shot 1). But “Contour” filter fails. Many thanks. STEPS TO REPRODUCE ISSUE: Download UG\_sa…

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## [Data axis labels show twice](https://discourse.paraview.org/t/data-axis-labels-show-twice/5775)

<div class="topic-metadata">

**Author:** [@hconel](https://discourse.paraview.org/u/hconel)\
**Replies:** 4\
**Last updated:** [November 12, 2020, 9:14am UTC](https://discourse.paraview.org/t/data-axis-labels-show-twice/5775 "2020-11-12T09:14:14Z")

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Hi, when I enable “Data Axes Grid” or “Axes Grid” (only one of them), labels show twice. I couldn’t fix it, what should I do? I’m using version 5.7.0. Thanks

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## [paraview 3d interpolation](https://discourse.paraview.org/t/paraview-3d-interpolation/963)

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**Author:** [@fanfan](https://discourse.paraview.org/u/fanfan)\
**Replies:** 2\
**Last updated:** [December 17, 2018, 9:21am UTC](https://discourse.paraview.org/t/paraview-3d-interpolation/963 "2018-12-17T09:21:24Z")

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Hi I am able to view a vtk file imported from gtass gis into paraview. Instead of interpolating a dataset of 180k points in a different software, i am wondering if the interpolation can be done directly in paraview. th…

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## ["Requires an input" error on all filter options with vtk data file (that has data)](https://discourse.paraview.org/t/requires-an-input-error-on-all-filter-options-with-vtk-data-file-that-has-data/8295)

<div class="topic-metadata">

**Author:** [@Robert\_H](https://discourse.paraview.org/u/Robert_H)\
**Replies:** 3\
**Last updated:** [November 5, 2021, 6:10am UTC](https://discourse.paraview.org/t/requires-an-input-error-on-all-filter-options-with-vtk-data-file-that-has-data/8295 "2021-11-05T06:10:55Z")

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Hi all, I have a VTK dataset contaning 3D velocity from a simulation and I have just used the GUI “open” file button to load the data. I am able to represent the data using all the “surface”, “Points”, “Points Gaussian”…

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## [How to filter small droplets](https://discourse.paraview.org/t/how-to-filter-small-droplets/486)

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**Author:** [@DavidSCN](https://discourse.paraview.org/u/DavidSCN)\
**Replies:** 4\
**Last updated:** [August 29, 2018, 4:52pm UTC](https://discourse.paraview.org/t/how-to-filter-small-droplets/486 "2018-08-29T16:52:03Z")

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Hello everyone, we run simulations of secondary atomization of water drops. In this simulations, parts of the drop separate from the “main” drop. I need to filter out these small drop separation, in order to get the q…

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## [Frames per second (FPS) : Interactive framerate in Paraview UI](https://discourse.paraview.org/t/frames-per-second-fps-interactive-framerate-in-paraview-ui/5687)

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**Author:** [@Nicholas\_Yue](https://discourse.paraview.org/u/Nicholas_Yue)\
**Replies:** 3\
**Last updated:** [October 30, 2020, 2:28am UTC](https://discourse.paraview.org/t/frames-per-second-fps-interactive-framerate-in-paraview-ui/5687 "2020-10-30T02:28:06Z")

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Hi, I am comparing the running (MPI) of various variant (egl, osmesa) of pvserver and their impact of interactive frame rate. I am wondering if there is a way to display the frame rate as a user interact with the datas…

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## [Adding new field to mergeblock data](https://discourse.paraview.org/t/adding-new-field-to-mergeblock-data/4253)

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**Author:** [@Mahdi\_Kooshkbaghi](https://discourse.paraview.org/u/Mahdi_Kooshkbaghi)\
**Replies:** 2\
**Last updated:** [May 5, 2020, 10:35pm UTC](https://discourse.paraview.org/t/adding-new-field-to-mergeblock-data/4253 "2020-05-05T22:35:25Z")

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I have an issue adding new scalar field to the existing dataset. The simulation output is from NEK5000 code. First, I read the file, get the u and v field data. Then, Merge the blocks. Applied the servermanager.Fetch. N…

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## [Problems with Catalyst2 and Paraview Live Visualization](https://discourse.paraview.org/t/problems-with-catalyst2-and-paraview-live-visualization/11401)

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**Author:** [@SadBoySquad](https://discourse.paraview.org/u/SadBoySquad)\
**Replies:** 5\
**Last updated:** [February 14, 2023, 5:11pm UTC](https://discourse.paraview.org/t/problems-with-catalyst2-and-paraview-live-visualization/11401 "2023-02-14T17:11:05Z")

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Hello! I recently started taking a closer look into implementing Catalyst2 capabilities into an in-house fluid dynamics solver. My main goal is to be able to have a live representation of the solution, which means load…

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## [Appending vtkImageData in paraview](https://discourse.paraview.org/t/appending-vtkimagedata-in-paraview/3701)

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**Author:** [@Vishnu-C](https://discourse.paraview.org/u/Vishnu-C)\
**Replies:** 5\
**Last updated:** [March 2, 2020, 3:14am UTC](https://discourse.paraview.org/t/appending-vtkimagedata-in-paraview/3701 "2020-03-02T03:14:11Z")

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Hello, I want to append vtkImageData files to a single file, I could easily do that with vtk. But from paraview I can apply transform filters to place them as needed and append them. I tried two techniques to do that, …

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## [Pvserver error: symbol lookup error: ../lib64/libvtkFiltersParallelMPI-pv5.9.so.1: undefined symbol: \_\_svml\_nextafterf4](https://discourse.paraview.org/t/pvserver-error-symbol-lookup-error-lib64-libvtkfiltersparallelmpi-pv5-9-so-1-undefined-symbol-svml-nextafterf4/7367)

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**Author:** [@kmilo9999](https://discourse.paraview.org/u/kmilo9999)\
**Replies:** 6\
**Last updated:** [June 8, 2021, 5:49pm UTC](https://discourse.paraview.org/t/pvserver-error-symbol-lookup-error-lib64-libvtkfiltersparallelmpi-pv5-9-so-1-undefined-symbol-svml-nextafterf4/7367 "2021-06-08T17:49:11Z")

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Hello, I built paraview 5.9 (from source) and linking it againts openmpi 4.0.5. Parview Qt client works, but when I execute pvserver I get the error: symbol lookup error: ../lib64/libvtkFiltersParallelMPI-pv5.9.so.1: u…

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## [vtkPointDensity](https://discourse.paraview.org/t/vtkpointdensity/3916)

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**Author:** [@woodscn](https://discourse.paraview.org/u/woodscn)\
**Replies:** 6\
**Last updated:** [May 18, 2020, 1:20am UTC](https://discourse.paraview.org/t/vtkpointdensity/3916 "2020-05-18T01:20:33Z")

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The documentation for the VTK Point Density filter (not available in ParaView) references an alternative method for getting the same result: As an interesting side note: using the vtkPointInterpolation class with a vt…

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## [\[5.10\] How to render a gltf file](https://discourse.paraview.org/t/5-10-how-to-render-a-gltf-file/9160)

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**Author:** [@Vincent\_Rivola](https://discourse.paraview.org/u/Vincent_Rivola)\
**Replies:** 3\
**Last updated:** [March 10, 2022, 1:39pm UTC](https://discourse.paraview.org/t/5-10-how-to-render-a-gltf-file/9160 "2022-03-10T13:39:35Z")

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Hi everyone, I am trying to open and render a gltf file like this one for instance: I don’t know which variable to pick and material to select in order to get the rendered output close to what we see in sk…

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## [Move Source (disk or sphere) according to time dependent function](https://discourse.paraview.org/t/move-source-disk-or-sphere-according-to-time-dependent-function/2251)

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**Author:** [@matse](https://discourse.paraview.org/u/matse)\
**Replies:** 1\
**Last updated:** [July 19, 2019, 2:03pm UTC](https://discourse.paraview.org/t/move-source-disk-or-sphere-according-to-time-dependent-function/2251 "2019-07-19T14:03:50Z")

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Hello, I need to overlay a disk or sphere over my data and move it along a given function, that depends on the simulation time t. So e.g. I want a disk to move along the x-axis during the simulation time - is this possi…

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## [Viewing measurements in submicrometer](https://discourse.paraview.org/t/viewing-measurements-in-submicrometer/9817)

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**Author:** [@dinodano](https://discourse.paraview.org/u/dinodano)\
**Replies:** 5\
**Last updated:** [June 16, 2022, 11:50pm UTC](https://discourse.paraview.org/t/viewing-measurements-in-submicrometer/9817 "2022-06-16T23:50:18Z")

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Hello, I just started learning Paraview and sorry in advance if the problem I need help addressing is very trivial or have been answered before. :sweat\_smile: Currently I am using Paraview for postprocessing for a FEM …

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## [Phase Colours Not visible](https://discourse.paraview.org/t/phase-colours-not-visible/4154)

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**Author:** [@Ankur\_Gurjar](https://discourse.paraview.org/u/Ankur_Gurjar)\
**Replies:** 6\
**Last updated:** [April 27, 2020, 5:42am UTC](https://discourse.paraview.org/t/phase-colours-not-visible/4154 "2020-04-27T05:42:21Z")

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Hello All, I’m visualising 3 phase grain microstructures generated using dream 3d software.I want to visualise the 3 phases and their distribution in the imported .xdmf file which I’m opening with PV 4.2. As can be see…

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## [Saving animations takes too long](https://discourse.paraview.org/t/saving-animations-takes-too-long/8350)

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**Author:** [@Ali\_Sheikholeslam](https://discourse.paraview.org/u/Ali_Sheikholeslam)\
**Replies:** 5\
**Last updated:** [November 9, 2021, 2:10am UTC](https://discourse.paraview.org/t/saving-animations-takes-too-long/8350 "2021-11-09T02:10:20Z")

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It takes long time to save animations as .ogv, .png, and … . This issue gets worse when I add other data by importing as .pvd formats and … ; It seems ParaView read them and extract them for each saving steps which resul…

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## [Paraview real process memory leak with ospray](https://discourse.paraview.org/t/paraview-real-process-memory-leak-with-ospray/5966)

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**Author:** [@Lukasz](https://discourse.paraview.org/u/Lukasz)\
**Replies:** 5\
**Last updated:** [December 9, 2020, 8:00pm UTC](https://discourse.paraview.org/t/paraview-real-process-memory-leak-with-ospray/5966 "2020-12-09T20:00:46Z")

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Paraview 5.9.0 RC1 (Linux binaries from Kitware) spawns now a paraview-real process. I noticed that when exporting images with ospray (raycaster or pathtracer) paraview-real fills in RAM with each exported image until th…

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## [create cylinders from csv file with start and end locations](https://discourse.paraview.org/t/create-cylinders-from-csv-file-with-start-and-end-locations/11425)

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**Author:** [@Trailer1](https://discourse.paraview.org/u/Trailer1)\
**Replies:** 7\
**Last updated:** [July 24, 2023, 9:54am UTC](https://discourse.paraview.org/t/create-cylinders-from-csv-file-with-start-and-end-locations/11425 "2023-07-24T09:54:08Z")

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Hello to all, I have a .csv file with (x,y,z) positions of start and end positions of cylinders. I would like to import this into paraview and create the cylinders givent the (x,y,z) of start points, and (x,y,z) of end…

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## [How to show origin point in paraview](https://discourse.paraview.org/t/how-to-show-origin-point-in-paraview/10475)

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**Author:** [@Ying](https://discourse.paraview.org/u/Ying)\
**Replies:** 1\
**Last updated:** [October 10, 2022, 2:03am UTC](https://discourse.paraview.org/t/how-to-show-origin-point-in-paraview/10475 "2022-10-10T02:03:19Z")

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Hi, I’d like to view the location of origin point in the current window for reference, like a small black point, is it possible in paraview? Thanks!

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## [Embree problem with illegal instruction in ParaView 5.6.1](https://discourse.paraview.org/t/embree-problem-with-illegal-instruction-in-paraview-5-6-1/2070)

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**Author:** [@joeh](https://discourse.paraview.org/u/joeh)\
**Replies:** 4\
**Last updated:** [June 21, 2019, 3:12pm UTC](https://discourse.paraview.org/t/embree-problem-with-illegal-instruction-in-paraview-5-6-1/2070 "2019-06-21T15:12:02Z")

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Hello, I have found that there is a problem with compilation of ParaView 5.6.1 superbuild’s embree library for older Linux systems. The embree library seems to be calling avx instructions that are not present in these…

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## [Remove transparency from .vtk](https://discourse.paraview.org/t/remove-transparency-from-vtk/7022)

<div class="topic-metadata">

**Author:** [@bkb005](https://discourse.paraview.org/u/bkb005)\
**Replies:** 5\
**Last updated:** [April 22, 2021, 10:44am UTC](https://discourse.paraview.org/t/remove-transparency-from-vtk/7022 "2021-04-22T10:44:10Z")

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I work in a biology lab, so Paraview is very new to me. We’ve created .vtk files that represent cells and the blood vessels that surround them in the liver. I’d like to visualize them together, but there seems to be a tr…

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## [loading and applying a PVCC with pvpython](https://discourse.paraview.org/t/loading-and-applying-a-pvcc-with-pvpython/2167)

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**Author:** [@romangrothausmann](https://discourse.paraview.org/u/romangrothausmann)\
**Replies:** 3\
**Last updated:** [July 5, 2019, 2:20pm UTC](https://discourse.paraview.org/t/loading-and-applying-a-pvcc-with-pvpython/2167 "2019-07-05T14:20:56Z")

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Hi! What is the current way to load and apply a PVCC with pvpython? I found: https://www.cfd-online.com/Forums/paraview/205684-scripting-trace-cameraview.html https://gitlab.kitware.com/paraview/paraview/issues/17673 …

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## [Missing blocks in animation when using parallel processing](https://discourse.paraview.org/t/missing-blocks-in-animation-when-using-parallel-processing/6482)

<div class="topic-metadata">

**Author:** [@Captain\_Convergence](https://discourse.paraview.org/u/Captain_Convergence)\
**Replies:** 8\
**Last updated:** [February 24, 2021, 1:17pm UTC](https://discourse.paraview.org/t/missing-blocks-in-animation-when-using-parallel-processing/6482 "2021-02-24T13:17:46Z")

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Dear all, I am using a post process script executed in the HPC of my institution for generating the streaklines of my simulation carried out in a multiblock mesh. I am calling the pvbatch as : mpiexec -np 6 pvbatch -…

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## [ParaView Python on Linux needs 4 Unicode width](https://discourse.paraview.org/t/paraview-python-on-linux-needs-4-unicode-width/772)

<div class="topic-metadata">

**Author:** [@banesullivan](https://discourse.paraview.org/u/banesullivan)\
**Replies:** 5\
**Last updated:** [October 25, 2018, 3:41pm UTC](https://discourse.paraview.org/t/paraview-python-on-linux-needs-4-unicode-width/772 "2018-10-25T15:41:13Z")

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Reposting an issue from the superbuild to see if anyone has some advice: The issue Currently, it appears the ParaView’s Python (Linux only) is built with 2 Unicode width which is incompatible with just about every Linux…

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## [writing .vtu file from .txt file using fortran](https://discourse.paraview.org/t/writing-vtu-file-from-txt-file-using-fortran/2630)

<div class="topic-metadata">

**Author:** [@Shubham\_Belgaonkar](https://discourse.paraview.org/u/Shubham_Belgaonkar)\
**Replies:** 3\
**Last updated:** [December 18, 2020, 2:33pm UTC](https://discourse.paraview.org/t/writing-vtu-file-from-txt-file-using-fortran/2630 "2020-12-18T14:33:15Z")

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I am new to vtk and paraview. I just wanted to know whether there is any library in fortran or code to write .vtu files from ascii file. ascii data : ID - X - Y - Y - R 478020 - 4.842613353612568 - 1.002301828533956 …

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## [pvpython in vscode](https://discourse.paraview.org/t/pvpython-in-vscode/12925)

<div class="topic-metadata">

**Author:** [@PombearView](https://discourse.paraview.org/u/PombearView)\
**Replies:** 3\
**Last updated:** [June 29, 2024, 6:12pm UTC](https://discourse.paraview.org/t/pvpython-in-vscode/12925 "2024-06-29T18:12:31Z")

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Hi all, I’m looking for best tips on setting up a development environment for coding pvpython in vscode. Ideally have linting for paraview (by setting the paths to the paraview site-packages and Lib i can autocomplete: …

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## [Paraview Glance - default "Color By" (.vtu files)](https://discourse.paraview.org/t/paraview-glance-default-color-by-vtu-files/7480)

<div class="topic-metadata">

**Author:** [@lowry](https://discourse.paraview.org/u/lowry)\
**Replies:** 6\
**Last updated:** [July 21, 2021, 10:00pm UTC](https://discourse.paraview.org/t/paraview-glance-default-color-by-vtu-files/7480 "2021-07-21T22:00:23Z")

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When loading a vtu/vtp file into Paraview (desktop), the scalar data array as identified within the CellData node is selected by default within the “Color By” tool, visualizing it automatically. Within paraview glance, …

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## [Draping textures on top surface of a structured/unstructured grid (or variable elevation surface).](https://discourse.paraview.org/t/draping-textures-on-top-surface-of-a-structured-unstructured-grid-or-variable-elevation-surface/7331)

<div class="topic-metadata">

**Author:** [@datathing](https://discourse.paraview.org/u/datathing)\
**Replies:** 2\
**Last updated:** [June 1, 2021, 7:38am UTC](https://discourse.paraview.org/t/draping-textures-on-top-surface-of-a-structured-unstructured-grid-or-variable-elevation-surface/7331 "2021-06-01T07:38:10Z")

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Is there any way to drape/project a image (aerial photography in my case) onto the top surface of structured or unstructured grid defined by a VTK file? I have tried playing around with the “texture map to plane” filter …

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## [Filter xml template](https://discourse.paraview.org/t/filter-xml-template/3220)

<div class="topic-metadata">

**Author:** [@SimonFuet](https://discourse.paraview.org/u/SimonFuet)\
**Replies:** 4\
**Last updated:** [December 20, 2019, 1:01pm UTC](https://discourse.paraview.org/t/filter-xml-template/3220 "2019-12-20T13:01:24Z")

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Hi all, I’m creating a new filter along with its Paraview (xml) interface. In this filter I have a lot of parameters. A parameter is composed of 3 components: a boolean that specifies whether the parameter is given a…

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## [VRML importer regression](https://discourse.paraview.org/t/vrml-importer-regression/2382)

<div class="topic-metadata">

**Author:** [@Lorensen](https://discourse.paraview.org/u/Lorensen)\
**Replies:** 5\
**Last updated:** [August 9, 2019, 1:20pm UTC](https://discourse.paraview.org/t/vrml-importer-regression/2382 "2019-08-09T13:20:18Z")

</div>

There is a regression between 4.1 and 5.0RC1. Here is the 4.1 vs the 5.0rc1 . The data I used is here.

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## [Recover OpenGL Informations from pvpython](https://discourse.paraview.org/t/recover-opengl-informations-from-pvpython/1536)

<div class="topic-metadata">

**Author:** [@mwestphal](https://discourse.paraview.org/u/mwestphal)\
**Replies:** 3\
**Last updated:** [June 10, 2019, 3:40pm UTC](https://discourse.paraview.org/t/recover-opengl-informations-from-pvpython/1536 "2019-06-10T15:40:30Z")

</div>

The OpenGL informations, visible in Help → About dialog, are not easily recoverable in pvpython yet. Here is how to do it. On ParaView 5.6 and earlier versions: import vtk as VTK openGLInfo=VTK.vtkPVOpenGLInformation(…

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## [Time values from Visit Silo files](https://discourse.paraview.org/t/time-values-from-visit-silo-files/1354)

<div class="topic-metadata">

**Author:** [@Grenix](https://discourse.paraview.org/u/Grenix)\
**Replies:** 1\
**Last updated:** [March 2, 2019, 5:39pm UTC](https://discourse.paraview.org/t/time-values-from-visit-silo-files/1354 "2019-03-02T17:39:05Z")

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I have been a regular user of Visit and am transitioning to ParaView for numerous reasons. What I am having issues with is reading in a time-series of data where the data is nested within directories and the directories…

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## [How to write AMR grid in Catalyst-5.6](https://discourse.paraview.org/t/how-to-write-amr-grid-in-catalyst-5-6/1807)

<div class="topic-metadata">

**Author:** [@tesari](https://discourse.paraview.org/u/tesari)\
**Replies:** 7\
**Last updated:** [May 19, 2019, 12:46am UTC](https://discourse.paraview.org/t/how-to-write-amr-grid-in-catalyst-5-6/1807 "2019-05-19T00:46:44Z")

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Hi, I asked this a week ago, but did not get any feedback. Let me try to clarify my question. I build CatalystExamples. Running “CxxNonOverlappingAMRExample feslicescript.py” works as expected, I get slice\_#.vtm files. …

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## [Progress Bar in 5.9.0](https://discourse.paraview.org/t/progress-bar-in-5-9-0/6707)

<div class="topic-metadata">

**Author:** [@jmlink](https://discourse.paraview.org/u/jmlink)\
**Replies:** 5\
**Last updated:** [March 15, 2021, 5:12pm UTC](https://discourse.paraview.org/t/progress-bar-in-5-9-0/6707 "2021-03-15T17:12:56Z")

</div>

I just downloaded 5.9.0 and loaded a state file from 5.8.0. It has a progress bar with a secondary color selected and the option selected to show the background . In 5.8.0 the progress bar updated correctly with the prog…

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## [ParaView Illegal instruction (core dumped)](https://discourse.paraview.org/t/paraview-illegal-instruction-core-dumped/2636)

<div class="topic-metadata">

**Author:** [@GWAVE](https://discourse.paraview.org/u/GWAVE)\
**Replies:** 3\
**Last updated:** [October 28, 2019, 9:02pm UTC](https://discourse.paraview.org/t/paraview-illegal-instruction-core-dumped/2636 "2019-10-28T21:02:54Z")

</div>

I have to connect to a HPC center running pvserver, in which the ParaView install is version 5.6.1. When I make the remote connection from my office PC, the connection complains about version mismatch ERROR: In /tmp/Par…

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## [stream tracer with custom fails in parallel](https://discourse.paraview.org/t/stream-tracer-with-custom-fails-in-parallel/672)

<div class="topic-metadata">

**Author:** [@JKau](https://discourse.paraview.org/u/JKau)\
**Replies:** 7\
**Last updated:** [January 31, 2024, 12:42pm UTC](https://discourse.paraview.org/t/stream-tracer-with-custom-fails-in-parallel/672 "2024-01-31T12:42:37Z")

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Hi, I am trying to create a stream tracer with custom source on a decomposed OpenFOAM case with pvbatch in parallel. The job exits with an MPI Error, see attached logfile. pvbatch.log (1.8 KB) Running pvbatch in serial…

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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)

<div class="topic-metadata">

**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")

</div>

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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## [Using NRRD lable maps to isolate internal vtk data](https://discourse.paraview.org/t/using-nrrd-lable-maps-to-isolate-internal-vtk-data/6969)

<div class="topic-metadata">

**Author:** [@Douglas\_Todd](https://discourse.paraview.org/u/Douglas_Todd)\
**Replies:** 7\
**Last updated:** [April 16, 2021, 4:18pm UTC](https://discourse.paraview.org/t/using-nrrd-lable-maps-to-isolate-internal-vtk-data/6969 "2021-04-16T16:18:44Z")

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Good Afternoon. I am new to Paraview, and am looking for a suggestion on how to extract 3d data using an nrrd label map. I have created an NRRD label map file that contains labels for the internal structures of an obje…

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## [ColorBy(rep,value=None) results in RuntimeError](https://discourse.paraview.org/t/colorby-rep-value-none-results-in-runtimeerror/6263)

<div class="topic-metadata">

**Author:** [@oponkork](https://discourse.paraview.org/u/oponkork)\
**Replies:** 4\
**Last updated:** [January 21, 2021, 4:01pm UTC](https://discourse.paraview.org/t/colorby-rep-value-none-results-in-runtimeerror/6263 "2021-01-21T16:01:30Z")

</div>

Using colorBy(rep,value=None) in a python script results in the following error: \>\>\> Traceback (most recent call last): File "/usr/lib/python3.9/site-packages/paraview/servermanager.py", line 3190, in GetAssociationFr…

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## [Implementing a Visit Reader in Paraview 5.8.0 ADD\_VISIT\_PLUGIN\_READER](https://discourse.paraview.org/t/implementing-a-visit-reader-in-paraview-5-8-0-add-visit-plugin-reader/3726)

<div class="topic-metadata">

**Author:** [@nitawa](https://discourse.paraview.org/u/nitawa)\
**Replies:** 6\
**Last updated:** [April 20, 2020, 3:14am UTC](https://discourse.paraview.org/t/implementing-a-visit-reader-in-paraview-5-8-0-add-visit-plugin-reader/3726 "2020-04-20T03:14:18Z")

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Dear experts, I recently moved to Paraview 5.8 and need to upgrade a Visit Reader plugin With Paraview 5.6.0, following the online documentation: https://www.paraview.org/Wiki/VisIt\_Database\_Bridge#Custom\_Plugin\_of\_Vi…

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## [No module named 'paraview.web'](https://discourse.paraview.org/t/no-module-named-paraview-web/8860)

<div class="topic-metadata">

**Author:** [@bigfooted](https://discourse.paraview.org/u/bigfooted)\
**Replies:** 4\
**Last updated:** [January 31, 2022, 6:25pm UTC](https://discourse.paraview.org/t/no-module-named-paraview-web/8860 "2022-01-31T18:25:43Z")

</div>

Hi all! After looking at the different options to do paraview visualization in a browser environment I decided to install paraviewweb from source using the instructions from here: I was not familiar with npm but after…

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## [Extracting values 1m above a surface](https://discourse.paraview.org/t/extracting-values-1m-above-a-surface/5547)

<div class="topic-metadata">

**Author:** [@Jan\_Majcher](https://discourse.paraview.org/u/Jan_Majcher)\
**Replies:** 3\
**Last updated:** [November 10, 2021, 2:51pm UTC](https://discourse.paraview.org/t/extracting-values-1m-above-a-surface/5547 "2021-11-10T14:51:29Z")

</div>

Hi, I have a solved OpenFoam case with a 3D seabed geometry embedded in a mesh using snappyHexMesh. I would like to extract flow velocities 1 m above the surface (1m higher than the surface in z direction at each cell)…

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## [Fedora 36 and math text (MaskParser is not initialized!)](https://discourse.paraview.org/t/fedora-36-and-math-text-maskparser-is-not-initialized/10721)

<div class="topic-metadata">

**Author:** [@kgreen](https://discourse.paraview.org/u/kgreen)\
**Replies:** 7\
**Last updated:** [November 14, 2022, 12:23am UTC](https://discourse.paraview.org/t/fedora-36-and-math-text-maskparser-is-not-initialized/10721 "2022-11-14T00:23:32Z")

</div>

Hi! On Fedora 36, I’m unable to use LaTeX math fonts for any string. When using the package: paraview.x86\_64 5.10.0-0.4.fc36 I get the errors: ERROR: In /builddir/build/BUILD/…

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