# ParaView Support

**URL:** https://discourse.paraview.org/c/paraview-support/7.md?page=32

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

**Page:** 33

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## [ParaView crash when opening XML based vtk file](https://discourse.paraview.org/t/paraview-crash-when-opening-xml-based-vtk-file/15434)

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**Author:** [@jeff21](https://discourse.paraview.org/u/jeff21)\
**Replies:** 5\
**Last updated:** [September 26, 2024, 9:35am UTC](https://discourse.paraview.org/t/paraview-crash-when-opening-xml-based-vtk-file/15434 "2024-09-26T09:35:10Z")

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Hi all I am having an issue when opening a .vtk file containing some thermal data from a simulator tool I built. The output .vtk file is generated from a library function (dolfinx.io VTKFile) and when opening it in Note…

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## [Export vtk in ascii](https://discourse.paraview.org/t/export-vtk-in-ascii/15432)

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**Author:** [@lydie](https://discourse.paraview.org/u/lydie)\
**Replies:** 3\
**Last updated:** [September 26, 2024, 9:34am UTC](https://discourse.paraview.org/t/export-vtk-in-ascii/15432 "2024-09-26T09:34:41Z")

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Is it possible to export 3D vtk model directly in ascii (X Y Z scalar) to visualize in other softwares? csv has note the same number of data from points to field data

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## [Extract block selectors fails when dash is in selector name](https://discourse.paraview.org/t/extract-block-selectors-fails-when-dash-is-in-selector-name/9589)

<div class="topic-metadata">

**Author:** [@aerogt3](https://discourse.paraview.org/u/aerogt3)\
**Replies:** 1\
**Last updated:** [September 25, 2024, 10:10pm UTC](https://discourse.paraview.org/t/extract-block-selectors-fails-when-dash-is-in-selector-name/9589 "2024-09-25T22:10:18Z")

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I am trying to debug a rather difficult issue in 5.10.1 when using ExtractBlock on an OpenFOAM dataset. In previous versions, extractBlock worked very reliably by setting the BlockIndices to extract. However, I am findi…

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## [Combine two .vti and output a new .vti](https://discourse.paraview.org/t/combine-two-vti-and-output-a-new-vti/15439)

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**Author:** [@Hanyu\_Xu](https://discourse.paraview.org/u/Hanyu_Xu)\
**Replies:** 4\
**Last updated:** [September 25, 2024, 8:40pm UTC](https://discourse.paraview.org/t/combine-two-vti-and-output-a-new-vti/15439 "2024-09-25T20:40:37Z")

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Hello everyone: I have two .vti, as the figure shown (.vti1 and .vti2): I want to extract material 1 (red particles) in the first .vti, use it as a new material type and add it to the second .vti (vti2 has material …

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## [pvtu example](https://discourse.paraview.org/t/pvtu-example/15441)

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**Author:** [@TakisCFD](https://discourse.paraview.org/u/TakisCFD)\
**Replies:** 2\
**Last updated:** [September 25, 2024, 8:32pm UTC](https://discourse.paraview.org/t/pvtu-example/15441 "2024-09-25T20:32:55Z")

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Is there any example available to understand how to write the ghost cells for the individual vtu files that are linked by the pvtu file? I have successfully written from a CFD code the vtu and pvtu files (without ghost)…

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## [How to bundle Anaconda-installed paraview package using pyinstaller](https://discourse.paraview.org/t/how-to-bundle-anaconda-installed-paraview-package-using-pyinstaller/7638)

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**Author:** [@Denny\_Wey](https://discourse.paraview.org/u/Denny_Wey)\
**Replies:** 5\
**Last updated:** [September 25, 2024, 6:14pm UTC](https://discourse.paraview.org/t/how-to-bundle-anaconda-installed-paraview-package-using-pyinstaller/7638 "2024-09-25T18:14:31Z")

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## [Error in font rendering on 2d line chart views](https://discourse.paraview.org/t/error-in-font-rendering-on-2d-line-chart-views/15393)

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**Author:** [@hunter.gilbert](https://discourse.paraview.org/u/hunter.gilbert)\
**Replies:** 5\
**Last updated:** [September 25, 2024, 10:35am UTC](https://discourse.paraview.org/t/error-in-font-rendering-on-2d-line-chart-views/15393 "2024-09-25T10:35:04Z")

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Hello, I’m working with ParaView 5.12.0 downloaded as the precompiled package on Rocky Linux 9.4 and having trouble with the rendering of fonts in 2D views, which appear to have some rendering artifacts around each glyp…

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## [depixelating an image](https://discourse.paraview.org/t/depixelating-an-image/15436)

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**Author:** [@Vamsi\_2001](https://discourse.paraview.org/u/Vamsi_2001)\
**Replies:** 7\
**Last updated:** [September 25, 2024, 9:33am UTC](https://discourse.paraview.org/t/depixelating-an-image/15436 "2024-09-25T09:33:05Z")

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How to depixalate an image in paraview such that the pixels will smoothen out,tried cell data to point data but it didnt worked out

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## [Paraview on the Raspberry pi5](https://discourse.paraview.org/t/paraview-on-the-raspberry-pi5/15046)

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**Author:** [@Mishal](https://discourse.paraview.org/u/Mishal)\
**Replies:** 1\
**Last updated:** [September 25, 2024, 8:51am UTC](https://discourse.paraview.org/t/paraview-on-the-raspberry-pi5/15046 "2024-09-25T08:51:07Z")

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Hi Guys I have a raspberry pi5 running Ubuntu. Has anyone managed to get Paraview up and running for the pi? I have managed to install Paraview but when I launch it I get several errors regarding the openGL capabiliti…

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## [Problem With Equally Spaced 2d Stream line](https://discourse.paraview.org/t/problem-with-equally-spaced-2d-stream-line/15435)

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**Author:** [@Vamsi\_2001](https://discourse.paraview.org/u/Vamsi_2001)\
**Replies:** 1\
**Last updated:** [September 25, 2024, 4:47am UTC](https://discourse.paraview.org/t/problem-with-equally-spaced-2d-stream-line/15435 "2024-09-25T04:47:29Z")

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whenever i try to use equally spaced 2d stream line for this streamlines in X\_Y plane i am getting error(line 730 not found),what should i do to rectify this error

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## [Gradients and boundaries](https://discourse.paraview.org/t/gradients-and-boundaries/15425)

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**Author:** [@chrispy](https://discourse.paraview.org/u/chrispy)\
**Replies:** 5\
**Last updated:** [September 24, 2024, 4:17pm UTC](https://discourse.paraview.org/t/gradients-and-boundaries/15425 "2024-09-24T16:17:24Z")

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Hello, I am a relatively new Paraview user, and I have a question about how the Gradient filter operates (or how to correct its operation) on periodic boundaries. In my application I have an unstructured mesh that I l…

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## [Tecplot Reader & New Parameters](https://discourse.paraview.org/t/tecplot-reader-new-parameters/15409)

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**Author:** [@jmlink](https://discourse.paraview.org/u/jmlink)\
**Replies:** 9\
**Last updated:** [September 24, 2024, 3:56pm UTC](https://discourse.paraview.org/t/tecplot-reader-new-parameters/15409 "2024-09-24T15:56:13Z")

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When I load a state file I need to be able to have access to additional parameters that are in the new tecplot files. For instance, if I have three vector components (x, y, and z) I will want to add additional parameters…

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## [Visualization of Vector Field In Paraview](https://discourse.paraview.org/t/visualization-of-vector-field-in-paraview/15431)

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**Author:** [@Vamsi\_2001](https://discourse.paraview.org/u/Vamsi_2001)\
**Replies:** 3\
**Last updated:** [September 24, 2024, 2:26pm UTC](https://discourse.paraview.org/t/visualization-of-vector-field-in-paraview/15431 "2024-09-24T14:26:08Z")

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while selecting the Glyphs filter for velocity contour the glyphys are going out of boundary for slice plane(Perpendicular),can we project the vectors on another plane,if so how to project them,see below attached images …

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## [Problem with netcdf files where x,y have the same dimension](https://discourse.paraview.org/t/problem-with-netcdf-files-where-x-y-have-the-same-dimension/15421)

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**Author:** [@Venke](https://discourse.paraview.org/u/Venke)\
**Replies:** 3\
**Last updated:** [September 24, 2024, 6:41am UTC](https://discourse.paraview.org/t/problem-with-netcdf-files-where-x-y-have-the-same-dimension/15421 "2024-09-24T06:41:56Z")

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Hej, I have a problem visualising netcdf grids where the coordinate vectors have the same lengths.The file is loaded with the NetCDFReader. When I annotate the coordinates with Data Axes Grid the x-coordinates are equal…

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## [Plotting animated probe location over time](https://discourse.paraview.org/t/plotting-animated-probe-location-over-time/15414)

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**Author:** [@Tom](https://discourse.paraview.org/u/Tom)\
**Replies:** 6\
**Last updated:** [September 23, 2024, 6:53am UTC](https://discourse.paraview.org/t/plotting-animated-probe-location-over-time/15414 "2024-09-23T06:53:43Z")

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Hello, I am trying to plot my data over a moving probe location in time. Currently, I use the probe location to extract the local data and I know beforehand the movement of the probe over time (just along a simple line)…

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## [Computing vorticity and Q-criterion with the "Gradient of Unstructured Data set" filter](https://discourse.paraview.org/t/computing-vorticity-and-q-criterion-with-the-gradient-of-unstructured-data-set-filter/3301)

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**Author:** [@peterjeong](https://discourse.paraview.org/u/peterjeong)\
**Replies:** 6\
**Last updated:** [September 20, 2024, 8:04pm UTC](https://discourse.paraview.org/t/computing-vorticity-and-q-criterion-with-the-gradient-of-unstructured-data-set-filter/3301 "2024-09-20T20:04:40Z")

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Hi. I’m currently trying to calculate the vorticity and the q-criterion using the “Gradient of Unstructured Data set” filter, with the velocity data set of a Cartesian grid, formatted as follows. density u v …

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## [Trouble Understanding VTK file node connectivities](https://discourse.paraview.org/t/trouble-understanding-vtk-file-node-connectivities/15391)

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**Author:** [@smh](https://discourse.paraview.org/u/smh)\
**Replies:** 6\
**Last updated:** [September 20, 2024, 6:19pm UTC](https://discourse.paraview.org/t/trouble-understanding-vtk-file-node-connectivities/15391 "2024-09-20T18:19:48Z")

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Hello, I’m working with a VTK file and have noticed a discrepancy between what I see in my preview software and what’s actually in the file. I’m hoping someone can help me understand why this is happening. What I’m see…

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## [Plotting averaged passive scalar (averaged over x) from a 2D domain (x, y) over length (y).](https://discourse.paraview.org/t/plotting-averaged-passive-scalar-averaged-over-x-from-a-2d-domain-x-y-over-length-y/15389)

<div class="topic-metadata">

**Author:** [@bibhas](https://discourse.paraview.org/u/bibhas)\
**Replies:** 4\
**Last updated:** [September 20, 2024, 5:32pm UTC](https://discourse.paraview.org/t/plotting-averaged-passive-scalar-averaged-over-x-from-a-2d-domain-x-y-over-length-y/15389 "2024-09-20T17:32:02Z")

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Hi, I am new to Paraview! I have a 2D Domain (x, y). It has velocity, pressure, and two passive scalars. I wish to plot the averaged passive scalar ( averaged in x) over the y direction. Thanks, Bibhas

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## [Error loading result of fluent in paraview](https://discourse.paraview.org/t/error-loading-result-of-fluent-in-paraview/9602)

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**Author:** [@Saeed](https://discourse.paraview.org/u/Saeed)\
**Replies:** 3\
**Last updated:** [September 20, 2024, 2:32pm UTC](https://discourse.paraview.org/t/error-loading-result-of-fluent-in-paraview/9602 "2024-09-20T14:32:45Z")

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Hi When I open the results of a simulation in Fluent, I get an error: ERROR: In C:\\glr\\builds\\paraview\\paraview-ci\\build\\superbuild\\paraview\\src\\VTK\\IO\\EnSight\\vtkGenericEnSightReader.cxx, line 441 vtkPGenericEnSightR…

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## [Paraview stopped working completely](https://discourse.paraview.org/t/paraview-stopped-working-completely/15413)

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**Author:** [@legno](https://discourse.paraview.org/u/legno)\
**Replies:** 1\
**Last updated:** [September 20, 2024, 11:53am UTC](https://discourse.paraview.org/t/paraview-stopped-working-completely/15413 "2024-09-20T11:53:22Z")

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Hello, I am on OSx 14.6, I have an .xdmf file and a related .h5 file that I could succesfully open with Paraivew 5.13.0. I did not update Paraview, and all of a sudden Paraview stopped working. I open the same file that…

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## [Mapping from Unstructured to Structured Grid](https://discourse.paraview.org/t/mapping-from-unstructured-to-structured-grid/15400)

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**Author:** [@iamkbatra](https://discourse.paraview.org/u/iamkbatra)\
**Replies:** 2\
**Last updated:** [September 19, 2024, 8:39am UTC](https://discourse.paraview.org/t/mapping-from-unstructured-to-structured-grid/15400 "2024-09-19T08:39:58Z")

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Hello Everyone, I have multiple geometries of a plate with a circular hole. The size and the location of the hole keeps changing. I want to have a constant grid and on this I want to interpolate the displacement results…

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## [Error when opening pv.foam](https://discourse.paraview.org/t/error-when-opening-pv-foam/13472)

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**Author:** [@bobo](https://discourse.paraview.org/u/bobo)\
**Replies:** 6\
**Last updated:** [September 18, 2024, 4:47am UTC](https://discourse.paraview.org/t/error-when-opening-pv-foam/13472 "2024-09-18T04:47:00Z")

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Hi, I cannot open my simulation results anymore. I’m receiving the following error when i open the pv.foam file: ERROR: In C:\\glr\\builds\\paraview\\paraview-ci\\build\\superbuild\\paraview\\src\\VTK\\IO\\Parallel\\vtkPOpenFOAMR…

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## [Clip closed surface filter over result of boolean operation](https://discourse.paraview.org/t/clip-closed-surface-filter-over-result-of-boolean-operation/15401)

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**Author:** [@m\_farid](https://discourse.paraview.org/u/m_farid)\
**Replies:** 0\
**Last updated:** [September 17, 2024, 3:46pm UTC](https://discourse.paraview.org/t/clip-closed-surface-filter-over-result-of-boolean-operation/15401 "2024-09-17T15:46:22Z")

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Hi, in my previous post I noticed that if I use the difference result of the BooleanOperations filter with the Clip Closed Surface filter, sometimes the holes aren’t completely closed. This generally seems to happen if t…

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## [Multiblock variables selection and availability in calculator filter](https://discourse.paraview.org/t/multiblock-variables-selection-and-availability-in-calculator-filter/15397)

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**Author:** [@athos\_epa](https://discourse.paraview.org/u/athos_epa)\
**Replies:** 2\
**Last updated:** [September 16, 2024, 1:55pm UTC](https://discourse.paraview.org/t/multiblock-variables-selection-and-availability-in-calculator-filter/15397 "2024-09-16T13:55:38Z")

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Hello everyone, I’m trying to compute the Drag and Lift forces of a tumbling cylinder entering the atmosphere. From various tutorials online I found the procedure to do so with a series of filters. However, I noticed th…

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## [How to accurately calculate cross-section area of STL](https://discourse.paraview.org/t/how-to-accurately-calculate-cross-section-area-of-stl/15355)

<div class="topic-metadata">

**Author:** [@m\_farid](https://discourse.paraview.org/u/m_farid)\
**Replies:** 6\
**Last updated:** [September 16, 2024, 11:14am UTC](https://discourse.paraview.org/t/how-to-accurately-calculate-cross-section-area-of-stl/15355 "2024-09-16T11:14:02Z")

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Hi, I have a hollow STL file, and would like to find the area of a cross-section. Up till now, my process has been: Get cross-section using Slice filter Use Delaunay2D filter to get a 2D surface Use IntegrateVariables …

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## [Python how to generate ghost cells?](https://discourse.paraview.org/t/python-how-to-generate-ghost-cells/15383)

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**Author:** [@CathyX](https://discourse.paraview.org/u/CathyX)\
**Replies:** 7\
**Last updated:** [September 16, 2024, 5:35am UTC](https://discourse.paraview.org/t/python-how-to-generate-ghost-cells/15383 "2024-09-16T05:35:52Z")

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https://gitlab.kitware.com/vtk/vtk/-/blob/v9.3.0/Filters/ParallelDIY2/Testing/Cxx/TestGhostCellsGenerator.cxx I noticed there is a C++ test code for vtkGhostCellsGenerator.h but it is in C++ wondering is there a matchi…

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## [Extracting node set and element set information from Exodus file](https://discourse.paraview.org/t/extracting-node-set-and-element-set-information-from-exodus-file/15385)

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**Author:** [@Jesse](https://discourse.paraview.org/u/Jesse)\
**Replies:** 1\
**Last updated:** [September 13, 2024, 7:35pm UTC](https://discourse.paraview.org/t/extracting-node-set-and-element-set-information-from-exodus-file/15385 "2024-09-13T19:35:05Z")

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I’d like to get node set and element set information from an Exodus file using pvpython. I’m interested in both: getting specific node/element IDs given the name of the set, and getting data from a specific variable gi…

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## [NetCDF UGRID Reader Coloring Option Not Showing Every Arrays Available](https://discourse.paraview.org/t/netcdf-ugrid-reader-coloring-option-not-showing-every-arrays-available/15380)

<div class="topic-metadata">

**Author:** [@stlee](https://discourse.paraview.org/u/stlee)\
**Replies:** 0\
**Last updated:** [September 11, 2024, 6:48pm UTC](https://discourse.paraview.org/t/netcdf-ugrid-reader-coloring-option-not-showing-every-arrays-available/15380 "2024-09-11T18:48:06Z")

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Hi, I have a writer that writes EFDC model data out to a NetCDF file following the UGRID convention. I can open this file with the UGRID reader in ParaView 5.12.0. The “Cell Arrays” also list all the variables I have …

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## [Multiple inputs on a filter](https://discourse.paraview.org/t/multiple-inputs-on-a-filter/15378)

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**Author:** [@Mateus\_Facanha](https://discourse.paraview.org/u/Mateus_Facanha)\
**Replies:** 0\
**Last updated:** [September 11, 2024, 2:01pm UTC](https://discourse.paraview.org/t/multiple-inputs-on-a-filter/15378 "2024-09-11T14:01:40Z")

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I am trying to build a polyline step by step by forming it using a pair of points then merging so they preserve the order that I want, but I got some problems catching the other inputs, I can only use the first one. How …

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## [TAWSS AND OSI visualization in paraview](https://discourse.paraview.org/t/tawss-and-osi-visualization-in-paraview/8650)

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**Author:** [@Sumit\_Kumar](https://discourse.paraview.org/u/Sumit_Kumar)\
**Replies:** 2\
**Last updated:** [September 11, 2024, 1:40pm UTC](https://discourse.paraview.org/t/tawss-and-osi-visualization-in-paraview/8650 "2024-09-11T13:40:22Z")

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I have a question that is about post-processing using Paraview to extract time-averaged values. For my simulations (using simvascular) of flow in the human aorta, I am currently calculating the instantaneous wall shear …

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