# ParaView Support

**URL:** https://discourse.paraview.org/c/paraview-support/7.md?page=75

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

**Page:** 76

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## [How to get list of available blocks from a reader in ParaView 5.11 in Python interface](https://discourse.paraview.org/t/how-to-get-list-of-available-blocks-from-a-reader-in-paraview-5-11-in-python-interface/12127)

<div class="topic-metadata">

**Author:** [@Andy\_Bauer](https://discourse.paraview.org/u/Andy_Bauer)\
**Replies:** 2\
**Last updated:** [May 24, 2023, 3:28pm UTC](https://discourse.paraview.org/t/how-to-get-list-of-available-blocks-from-a-reader-in-paraview-5-11-in-python-interface/12127 "2023-05-24T15:28:09Z")

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Hi, What is the proper way to get a list of available blocks in a reader (my reader is the IOSSReader) when I’m in the Python shell? I can see that the reader is going to read in reader.ElementBlocks but it would be ni…

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## [Median filter crashing with .vti images](https://discourse.paraview.org/t/median-filter-crashing-with-vti-images/12140)

<div class="topic-metadata">

**Author:** [@Xabier\_Morales\_Ferez](https://discourse.paraview.org/u/Xabier_Morales_Ferez)\
**Replies:** 5\
**Last updated:** [May 24, 2023, 12:02pm UTC](https://discourse.paraview.org/t/median-filter-crashing-with-vti-images/12140 "2023-05-24T12:02:38Z")

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Hi, I’m updating a pipeline in Python where I take 3D images and save them as .vti images to visualize in Paraview. Previously, I saved them using the Pyevtk library, now I have switched to Pyvista. For some unknown rea…

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## [Accessing pvserver on a machine behind gateway](https://discourse.paraview.org/t/accessing-pvserver-on-a-machine-behind-gateway/12144)

<div class="topic-metadata">

**Author:** [@deOliveira-R](https://discourse.paraview.org/u/deOliveira-R)\
**Replies:** 1\
**Last updated:** [May 24, 2023, 8:55am UTC](https://discourse.paraview.org/t/accessing-pvserver-on-a-machine-behind-gateway/12144 "2023-05-24T08:55:14Z")

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Currently I’m using ParaView through an SSH tunnel that I make on the terminal. It works, but I know ParaView has several options to make its own tunnel, so I’m checking if I can reach a more streamlined flow that I coul…

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## [Black isobar-lines in Colorbars when displaying pressure](https://discourse.paraview.org/t/black-isobar-lines-in-colorbars-when-displaying-pressure/12147)

<div class="topic-metadata">

**Author:** [@FrodeMMeling](https://discourse.paraview.org/u/FrodeMMeling)\
**Replies:** 1\
**Last updated:** [May 24, 2023, 8:29am UTC](https://discourse.paraview.org/t/black-isobar-lines-in-colorbars-when-displaying-pressure/12147 "2023-05-24T08:29:39Z")

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We need to show pressure like this image in Paraview. We need to see more clearly the steps. Picture is from Star. Is this possible in Paraview today? If not, who can develop this for ParaView if we pay for the hours…

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## [Setting an attribute with a variable](https://discourse.paraview.org/t/setting-an-attribute-with-a-variable/12130)

<div class="topic-metadata">

**Author:** [@Kevin\_Arden](https://discourse.paraview.org/u/Kevin_Arden)\
**Replies:** 2\
**Last updated:** [May 24, 2023, 8:11am UTC](https://discourse.paraview.org/t/setting-an-attribute-with-a-variable/12130 "2023-05-24T08:11:46Z")

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I am using pvpython script to create a plot, it works well when I hard code the value, but I want to use a variable. I successfully pass the variable, verified by the print command # create a new 'Plot Over Line' print…

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## [Optix Pathtracer messes with line width (5.11.0)](https://discourse.paraview.org/t/optix-pathtracer-messes-with-line-width-5-11-0/12134)

<div class="topic-metadata">

**Author:** [@flotus1](https://discourse.paraview.org/u/flotus1)\
**Replies:** 2\
**Last updated:** [May 24, 2023, 6:49am UTC](https://discourse.paraview.org/t/optix-pathtracer-messes-with-line-width-5-11-0/12134 "2023-05-24T06:49:00Z")

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As seen in the images below. When using ray-tracing with Optix, Scenes that contain lines (e.g. surface with lines) are completely messed up with the default line width setting of 1. A workaround I found in a pinch is …

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## [How to show particles inside fluid](https://discourse.paraview.org/t/how-to-show-particles-inside-fluid/12136)

<div class="topic-metadata">

**Author:** [@BilalFareed123.3](https://discourse.paraview.org/u/BilalFareed123.3)\
**Replies:** 15\
**Last updated:** [May 24, 2023, 4:36am UTC](https://discourse.paraview.org/t/how-to-show-particles-inside-fluid/12136 "2023-05-24T04:36:29Z")

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Hi, I am working on paraview, i want to show my particles in the fluid box, i have two files one is fluid and other is particles after clicking the fluid file the fluid show but when i open the particles file the partic…

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## [Error about procedure entry point not found in dll](https://discourse.paraview.org/t/error-about-procedure-entry-point-not-found-in-dll/12135)

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**Author:** [@techn0gichida](https://discourse.paraview.org/u/techn0gichida)\
**Replies:** 2\
**Last updated:** [May 23, 2023, 3:05pm UTC](https://discourse.paraview.org/t/error-about-procedure-entry-point-not-found-in-dll/12135 "2023-05-23T15:05:06Z")

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Hi, I’m new to installing Paraview. I have the Linux version installed and it works for the users. I installed the Windows version with the zip file. On starting paraview.exe I get an error that states the “procedure en…

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## [How to plot pressure and force of single (or multiple) points on a patch over all time steps?](https://discourse.paraview.org/t/how-to-plot-pressure-and-force-of-single-or-multiple-points-on-a-patch-over-all-time-steps/12035)

<div class="topic-metadata">

**Author:** [@A\_E](https://discourse.paraview.org/u/A_E)\
**Replies:** 11\
**Last updated:** [May 23, 2023, 10:03am UTC](https://discourse.paraview.org/t/how-to-plot-pressure-and-force-of-single-or-multiple-points-on-a-patch-over-all-time-steps/12035 "2023-05-23T10:03:46Z")

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Hi I have a multiphase case (VOF) and simulated it using interFoam. Using ExtractBlock filter I have selected a patch I need and I have got the patch normals using GenerateSurfaceNormals filter. My first question is ho…

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## [Surface LIC: possible to scale LIC intensity with vector field magnitude?](https://discourse.paraview.org/t/surface-lic-possible-to-scale-lic-intensity-with-vector-field-magnitude/12138)

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**Author:** [@asmunder](https://discourse.paraview.org/u/asmunder)\
**Replies:** 0\
**Last updated:** [May 23, 2023, 7:00am UTC](https://discourse.paraview.org/t/surface-lic-possible-to-scale-lic-intensity-with-vector-field-magnitude/12138 "2023-05-23T07:00:16Z")

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I’m using Surface LIC to visualize simulation results where the flow speed varies significantly over the domain. I can get some quite nice results by coloring with the velocity magnitude, but it struck me that I could ge…

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## [Paraview.exe has stopped working](https://discourse.paraview.org/t/paraview-exe-has-stopped-working/12133)

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**Author:** [@BilalFareed123.3](https://discourse.paraview.org/u/BilalFareed123.3)\
**Replies:** 5\
**Last updated:** [May 22, 2023, 10:28am UTC](https://discourse.paraview.org/t/paraview-exe-has-stopped-working/12133 "2023-05-22T10:28:53Z")

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Hi, I am using paraview 5.8.1 version when i want to open xdmf file.Paraview.exe has stopped working and the software close why this happening please guide me.Thanks

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## [Reading zones with identical names using TecplotReader into Paraview](https://discourse.paraview.org/t/reading-zones-with-identical-names-using-tecplotreader-into-paraview/12118)

<div class="topic-metadata">

**Author:** [@Tox](https://discourse.paraview.org/u/Tox)\
**Replies:** 5\
**Last updated:** [May 22, 2023, 8:11am UTC](https://discourse.paraview.org/t/reading-zones-with-identical-names-using-tecplotreader-into-paraview/12118 "2023-05-22T08:11:31Z")

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Hi all, I am trying to read an ASCII Tecplot file into Paraview (5.11). It has two zones, which both have the same name. It reads ok, but with ExtractBlocks (which now uses block names, instead of indices like previousl…

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## [Mesh deformation using vespa in paraview](https://discourse.paraview.org/t/mesh-deformation-using-vespa-in-paraview/11965)

<div class="topic-metadata">

**Author:** [@Mehdi\_Hamidi](https://discourse.paraview.org/u/Mehdi_Hamidi)\
**Replies:** 2\
**Last updated:** [May 22, 2023, 7:46am UTC](https://discourse.paraview.org/t/mesh-deformation-using-vespa-in-paraview/11965 "2023-05-22T07:46:15Z")

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Hi, I am currently using Vespa to perform mesh deformation in Paraview, but I must admit that I don’t quite understand how to use it properly. If anyone can give me the steps to follow to perform it, I would be grateful…

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## [Export surface LIC video](https://discourse.paraview.org/t/export-surface-lic-video/12125)

<div class="topic-metadata">

**Author:** [@Alberto\_Lolli](https://discourse.paraview.org/u/Alberto_Lolli)\
**Replies:** 1\
**Last updated:** [May 22, 2023, 7:27am UTC](https://discourse.paraview.org/t/export-surface-lic-video/12125 "2023-05-22T07:27:44Z")

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Hi community, I’ve tried to export results of a transient simulation (vector field visualized with LIC surface) with several video format but none works good. I’ve tried to export the surface instead of LIC and no prob…

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## [Visualizing Vortices in Turbulent Flow using Steamtracer Method"](https://discourse.paraview.org/t/visualizing-vortices-in-turbulent-flow-using-steamtracer-method/12032)

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**Author:** [@Fatima\_Aid](https://discourse.paraview.org/u/Fatima_Aid)\
**Replies:** 2\
**Last updated:** [May 20, 2023, 9:40pm UTC](https://discourse.paraview.org/t/visualizing-vortices-in-turbulent-flow-using-steamtracer-method/12032 "2023-05-20T21:40:04Z")

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Hello everyone, I am currently working on a project involving a turbulent flow in a bend. I am trying to visualize the vortices in the flow using Paraview, but I am not sure how to proceed. I have heard that the Steamtra…

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## [Error: Failed to read data. Algorithm returned failure for request: vtkinformation](https://discourse.paraview.org/t/error-failed-to-read-data-algorithm-returned-failure-for-request-vtkinformation/826)

<div class="topic-metadata">

**Author:** [@danny.douglas](https://discourse.paraview.org/u/danny.douglas)\
**Replies:** 3\
**Last updated:** [May 19, 2023, 11:07pm UTC](https://discourse.paraview.org/t/error-failed-to-read-data-algorithm-returned-failure-for-request-vtkinformation/826 "2023-05-19T23:07:03Z")

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Hello, I’m a very recent Paraview user and can’t seem to see what is causing the problem I face. I have multiple solution.xdmf files that I am able to load into paraview and can observe the maximum timestep of the soluti…

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## [Fluid and particles interaction](https://discourse.paraview.org/t/fluid-and-particles-interaction/12124)

<div class="topic-metadata">

**Author:** [@BilalFareed123.3](https://discourse.paraview.org/u/BilalFareed123.3)\
**Replies:** 4\
**Last updated:** [May 19, 2023, 8:47am UTC](https://discourse.paraview.org/t/fluid-and-particles-interaction/12124 "2023-05-19T08:47:06Z")

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Hi, I am new here,i want to know i have two xdmf format files with fluid and partricles data,how i visualize in the paraview that the both fluid and particles interact.please guide me about it.thanks Bilal

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## [Using VTK API in CFD code](https://discourse.paraview.org/t/using-vtk-api-in-cfd-code/12116)

<div class="topic-metadata">

**Author:** [@Suman\_Vajjala](https://discourse.paraview.org/u/Suman_Vajjala)\
**Replies:** 5\
**Last updated:** [May 19, 2023, 7:21am UTC](https://discourse.paraview.org/t/using-vtk-api-in-cfd-code/12116 "2023-05-19T07:21:56Z")

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I am Suman Vajjala and I am developing a parallel, high order, unstructured grid based CFD code in C++ for LES/DNS. As I will be using high order mesh elements, I decided to use Paraview as my main visualization software…

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## [Color by a String Array](https://discourse.paraview.org/t/color-by-a-string-array/12122)

<div class="topic-metadata">

**Author:** [@cyrille](https://discourse.paraview.org/u/cyrille)\
**Replies:** 2\
**Last updated:** [May 18, 2023, 2:00pm UTC](https://discourse.paraview.org/t/color-by-a-string-array/12122 "2023-05-18T14:00:54Z")

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Hi, I have an unstructured mesh vtu file, with several point and cell data. One of the cell data (“Group Slot : geology”) is of type ‘string’, and I would like to have the colors according to the string values (“Interpr…

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## [PVTU or HDF5 for efficient solution visualization](https://discourse.paraview.org/t/pvtu-or-hdf5-for-efficient-solution-visualization/12121)

<div class="topic-metadata">

**Author:** [@Suman\_Vajjala](https://discourse.paraview.org/u/Suman_Vajjala)\
**Replies:** 0\
**Last updated:** [May 17, 2023, 6:04pm UTC](https://discourse.paraview.org/t/pvtu-or-hdf5-for-efficient-solution-visualization/12121 "2023-05-17T18:04:55Z")

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Hi, I was reading the VTK documentation and I came across a couple of VTK formats for parallel computing. One such format is the pvtu and the other is HDF5. Which is the better or efficient format for large data visuali…

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## [defining a path for the moving slice](https://discourse.paraview.org/t/defining-a-path-for-the-moving-slice/12120)

<div class="topic-metadata">

**Author:** [@atousa3D](https://discourse.paraview.org/u/atousa3D)\
**Replies:** 1\
**Last updated:** [May 17, 2023, 3:03pm UTC](https://discourse.paraview.org/t/defining-a-path-for-the-moving-slice/12120 "2023-05-17T15:03:30Z")

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Hi! I’d like to move a slice through the 3D data volume and animate its track. I was wondering how I can define the path/track on which the slice moves? I tried using view-\>animation view of the slice I have but did not …

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## [no input scalars](https://discourse.paraview.org/t/no-input-scalars/12102)

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**Author:** [@fchu](https://discourse.paraview.org/u/fchu)\
**Replies:** 4\
**Last updated:** [May 17, 2023, 8:58am UTC](https://discourse.paraview.org/t/no-input-scalars/12102 "2023-05-17T08:58:01Z")

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Dear all, I have some troubles with rendering data. The initial time is normal however the data of next time is not normal. Could you help me? the initial time: the next time:

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## [Clarification regarding creating VTKHDF5 file for CFD](https://discourse.paraview.org/t/clarification-regarding-creating-vtkhdf5-file-for-cfd/12115)

<div class="topic-metadata">

**Author:** [@Suman\_Vajjala](https://discourse.paraview.org/u/Suman_Vajjala)\
**Replies:** 1\
**Last updated:** [May 16, 2023, 7:20pm UTC](https://discourse.paraview.org/t/clarification-regarding-creating-vtkhdf5-file-for-cfd/12115 "2023-05-16T19:20:15Z")

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I am Suman Vajjala and I am developing a parallel, high order, unstructured grid based CFD code in C++ for LES/DNS. As I will be using high order mesh elements, I decided to use Paraview as my main visualization software…

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## [Problem opening same file twice](https://discourse.paraview.org/t/problem-opening-same-file-twice/12036)

<div class="topic-metadata">

**Author:** [@marta](https://discourse.paraview.org/u/marta)\
**Replies:** 7\
**Last updated:** [May 16, 2023, 4:41pm UTC](https://discourse.paraview.org/t/problem-opening-same-file-twice/12036 "2023-05-16T16:41:52Z")

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Hello, Once I open a .xmf file, if I close it and try to open it again I get these two errors: ERROR: In vtkXdmfReader.cxx, line 487 vtkXdmfReader (000001BED83E0F50): Failed to read data. ERROR: In vtkExecutive.cxx, …

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## [Input requirements of VTK-m contour versus regular contour filter](https://discourse.paraview.org/t/input-requirements-of-vtk-m-contour-versus-regular-contour-filter/12109)

<div class="topic-metadata">

**Author:** [@paulmelis](https://discourse.paraview.org/u/paulmelis)\
**Replies:** 3\
**Last updated:** [May 16, 2023, 2:48pm UTC](https://discourse.paraview.org/t/input-requirements-of-vtk-m-contour-versus-regular-contour-filter/12109 "2023-05-16T14:48:35Z")

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I have a uniform rectilinear grid of 862x759x1526 and try to contour a point data array “density” of 1-component float32s. With paraview 5.11.1 (official binaries) and the VTKmFilters plugin loaded: applying the VTK-m co…

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## [Using Python to load multiple CSVs](https://discourse.paraview.org/t/using-python-to-load-multiple-csvs/12105)

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**Author:** [@arkottke](https://discourse.paraview.org/u/arkottke)\
**Replies:** 1\
**Last updated:** [May 16, 2023, 2:29pm UTC](https://discourse.paraview.org/t/using-python-to-load-multiple-csvs/12105 "2023-05-16T14:29:00Z")

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I am trying to plot fault planes and epicenters. I was thinking that this would be a nice exercise to learn paraview. My basic process is to create CSV files of the fault coordinates. I then wrote paraview script to take…

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## [Issues with numpy with built version of ParaView](https://discourse.paraview.org/t/issues-with-numpy-with-built-version-of-paraview/12022)

<div class="topic-metadata">

**Author:** [@Andy\_Bauer](https://discourse.paraview.org/u/Andy_Bauer)\
**Replies:** 2\
**Last updated:** [May 16, 2023, 12:37pm UTC](https://discourse.paraview.org/t/issues-with-numpy-with-built-version-of-paraview/12022 "2023-05-16T12:37:49Z")

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Hi, I’m building ParaView (I get the same issue with VTK) and when I run pvpython I can’t import numpy. I can import numpy using my system Python, which my ParaView is built against. It looks like it’s my Python sys.pat…

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## [Table to Structured Grid, whole extent issue](https://discourse.paraview.org/t/table-to-structured-grid-whole-extent-issue/2730)

<div class="topic-metadata">

**Author:** [@LCA](https://discourse.paraview.org/u/LCA)\
**Replies:** 6\
**Last updated:** [May 16, 2023, 11:15am UTC](https://discourse.paraview.org/t/table-to-structured-grid-whole-extent-issue/2730 "2023-05-16T11:15:40Z")

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Hi, I am trying to read in the attached data and plot it out using the Table to Structured Grid command. From the web, it seems as though the extents should be X\_points-1, Y\_points-1, Z\_points-1 (or 9999, 9999, 9999 si…

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## [show particle layer by layer](https://discourse.paraview.org/t/show-particle-layer-by-layer/11978)

<div class="topic-metadata">

**Author:** [@ahjinger](https://discourse.paraview.org/u/ahjinger)\
**Replies:** 6\
**Last updated:** [May 16, 2023, 10:12am UTC](https://discourse.paraview.org/t/show-particle-layer-by-layer/11978 "2023-05-16T10:12:22Z")

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Hi, everyone. How to show particle layer by layer in paraview, and the color in each layer remain constant in various timestep.

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## [Saving high quality image](https://discourse.paraview.org/t/saving-high-quality-image/12023)

<div class="topic-metadata">

**Author:** [@kokebdese](https://discourse.paraview.org/u/kokebdese)\
**Replies:** 11\
**Last updated:** [May 16, 2023, 7:20am UTC](https://discourse.paraview.org/t/saving-high-quality-image/12023 "2023-05-16T07:20:29Z")

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Hi How can I save high quality (\>300dpi) image in paraview?

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