# Top

**URL:** https://discourse.paraview.org/top.md?page=179&period=all

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**Page:** 180

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## [Saved State not loading now](https://discourse.paraview.org/t/saved-state-not-loading-now/16855)

<div class="topic-metadata">

**Author:** [@scabo](https://discourse.paraview.org/u/scabo)\
**Replies:** 1\
**Last updated:** [June 27, 2025, 10:44pm UTC](https://discourse.paraview.org/t/saved-state-not-loading-now/16855 "2025-06-27T22:44:19Z")

</div>

Hi I saved a state previously and it opended a few times when i do load state. But suddenly when i am trying to open the saved state it is not showing anything on the screen upon loading. Only the Tree on the left panel…

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## [Adding an Observer to cell selections in a RenderView](https://discourse.paraview.org/t/adding-an-observer-to-cell-selections-in-a-renderview/16200)

<div class="topic-metadata">

**Author:** [@sherin.sugathan](https://discourse.paraview.org/u/sherin.sugathan)\
**Replies:** 1\
**Last updated:** [February 20, 2025, 3:32pm UTC](https://discourse.paraview.org/t/adding-an-observer-to-cell-selections-in-a-renderview/16200 "2025-02-20T15:32:45Z")

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Dear Support! I’m working on developing a C++ plugin for ParaView. I need some code to automatically trigger as soon as the user completes a cell selection on a mesh using ‘Select Cells On’ in a RenderView. Any pointer…

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## [How to manage custom filter via python?](https://discourse.paraview.org/t/how-to-manage-custom-filter-via-python/16085)

<div class="topic-metadata">

**Author:** [@joint](https://discourse.paraview.org/u/joint)\
**Replies:** 1\
**Last updated:** [February 4, 2025, 8:53am UTC](https://discourse.paraview.org/t/how-to-manage-custom-filter-via-python/16085 "2025-02-04T08:53:44Z")

</div>

Hello dear paraview developers! I want to have some complex logic and integration with other systems, with my python scripts How can I manage my C++/VTK plugin from Python? Thanks

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## [Extract a surface from a block](https://discourse.paraview.org/t/extract-a-surface-from-a-block/15906)

<div class="topic-metadata">

**Author:** [@Tony98](https://discourse.paraview.org/u/Tony98)\
**Replies:** 1\
**Last updated:** [December 30, 2024, 9:13am UTC](https://discourse.paraview.org/t/extract-a-surface-from-a-block/15906 "2024-12-30T09:13:03Z")

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Hi there, Happy holidays everybody. I would like to compute the wall shear stress for my simulation. The first step would be to extract the airfoil surface. I tried to replicate the instructions from a previous topic: C…

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## [How paraview python wrappings are done?](https://discourse.paraview.org/t/how-paraview-python-wrappings-are-done/15106)

<div class="topic-metadata">

**Author:** [@joint](https://discourse.paraview.org/u/joint)\
**Replies:** 1\
**Last updated:** [August 8, 2024, 7:27am UTC](https://discourse.paraview.org/t/how-paraview-python-wrappings-are-done/15106 "2024-08-08T07:27:31Z")

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Hello! paraview\_plugin\_add\_property\_widget KIND kind TYPE my\_property\_widget\_type CLASS\_NAME ClassName INTERFACES interfaces SOURCES sources) paraview\_add\_plugin(propwidget VERSION "1.0" UI\_INTERFACES ${in…

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## [Does paraview use CPython only?](https://discourse.paraview.org/t/does-paraview-use-cpython-only/15107)

<div class="topic-metadata">

**Author:** [@joint](https://discourse.paraview.org/u/joint)\
**Replies:** 1\
**Last updated:** [July 24, 2024, 12:32pm UTC](https://discourse.paraview.org/t/does-paraview-use-cpython-only/15107 "2024-07-24T12:32:25Z")

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Hello dear paraview developers! Could you please clarify, does paraview use CPython only or other python implementations could be used too? Best regards, Mike

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## [Change in colors in Paraview](https://discourse.paraview.org/t/change-in-colors-in-paraview/15032)

<div class="topic-metadata">

**Author:** [@Stayal](https://discourse.paraview.org/u/Stayal)\
**Replies:** 1\
**Last updated:** [July 10, 2024, 10:52am UTC](https://discourse.paraview.org/t/change-in-colors-in-paraview/15032 "2024-07-10T10:52:35Z")

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Hello sir I want to know how we change the colors lighter or darker in paraview instead of jet colors.

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## [help on deploying paraview web on azure web app service](https://discourse.paraview.org/t/help-on-deploying-paraview-web-on-azure-web-app-service/15716)

<div class="topic-metadata">

**Author:** [@chris.yang](https://discourse.paraview.org/u/chris.yang)\
**Replies:** 2\
**Last updated:** [November 16, 2024, 12:21am UTC](https://discourse.paraview.org/t/help-on-deploying-paraview-web-on-azure-web-app-service/15716 "2024-11-16T00:21:10Z")

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Hi, Currently our team is trying to build a web app and want to have a page to show d3plot files that rendered by the Paraview. I tried to initialize the paraview lite inside our web app by calling the command lines and…

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## [Paraview 6.1.0 displays a white screen](https://discourse.paraview.org/t/paraview-6-1-0-displays-a-white-screen/17592)

<div class="topic-metadata">

**Author:** [@Odyop89](https://discourse.paraview.org/u/Odyop89)\
**Replies:** 0\
**Last updated:** [June 2, 2026, 4:18pm UTC](https://discourse.paraview.org/t/paraview-6-1-0-displays-a-white-screen/17592 "2026-06-02T16:18:51Z")

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Hello, I would like to use Paraview to analyze data from the Digital Image Correlation software DICe. Unfortunately, I am having an issue where the screen remains white when I try to launch the program. (see image belo…

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## [Zooming in the axes](https://discourse.paraview.org/t/zooming-in-the-axes/17220)

<div class="topic-metadata">

**Author:** [@Venkat1](https://discourse.paraview.org/u/Venkat1)\
**Replies:** 1\
**Last updated:** [September 30, 2025, 11:35am UTC](https://discourse.paraview.org/t/zooming-in-the-axes/17220 "2025-09-30T11:35:44Z")

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I am not able to clearly see the axes in the bottom left of the viewing area because it is very small. Is there a way to enlarge the figure/image of the axes?

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## [ArrowGlyphFilter from Python Shell in PV 6.0.0](https://discourse.paraview.org/t/arrowglyphfilter-from-python-shell-in-pv-6-0-0/16915)

<div class="topic-metadata">

**Author:** [@Venke](https://discourse.paraview.org/u/Venke)\
**Replies:** 1\
**Last updated:** [July 9, 2025, 2:11pm UTC](https://discourse.paraview.org/t/arrowglyphfilter-from-python-shell-in-pv-6-0-0/16915 "2025-07-09T14:11:45Z")

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Hi, I get an error when I want to use the ArrowGlyphFilter in the Python Shell in ParaView 6.0.0: Traceback (most recent call last): File "\<console\>", line 1, in \<module\> NameError: name 'ArrowGlyphFilter' is not def…

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## [Issue loading from state when using pvtr - surface visualization not possible](https://discourse.paraview.org/t/issue-loading-from-state-when-using-pvtr-surface-visualization-not-possible/16881)

<div class="topic-metadata">

**Author:** [@Isaac\_Paten](https://discourse.paraview.org/u/Isaac_Paten)\
**Replies:** 1\
**Last updated:** [June 30, 2025, 12:19pm UTC](https://discourse.paraview.org/t/issue-loading-from-state-when-using-pvtr-surface-visualization-not-possible/16881 "2025-06-30T12:19:03Z")

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Hi, I am having an issue loading from a state file which in turn loads .pvtr files. When I load the state, it appears that the files have loaded correctly, as the data arrays are present with the correct ranges. However…

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## [Extracting probe data with time](https://discourse.paraview.org/t/extracting-probe-data-with-time/16479)

<div class="topic-metadata">

**Author:** [@Ayush\_Kumar](https://discourse.paraview.org/u/Ayush_Kumar)\
**Replies:** 1\
**Last updated:** [April 17, 2025, 12:36pm UTC](https://discourse.paraview.org/t/extracting-probe-data-with-time/16479 "2025-04-17T12:36:31Z")

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Hello all, I am trying to extract data by introducing a probe to the simulation. The only issue is it’s showing me value for that particular time step. How can I extract data for all time steps? Help would be appreciate…

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## [Clip plane and warp by vector with or without nvidia index volume rendering](https://discourse.paraview.org/t/clip-plane-and-warp-by-vector-with-or-without-nvidia-index-volume-rendering/16401)

<div class="topic-metadata">

**Author:** [@joetristano](https://discourse.paraview.org/u/joetristano)\
**Replies:** 0\
**Last updated:** [March 29, 2025, 1:38pm UTC](https://discourse.paraview.org/t/clip-plane-and-warp-by-vector-with-or-without-nvidia-index-volume-rendering/16401 "2025-03-29T13:38:52Z")

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Hi I have my own webgl shader for volume rendering fe results displacement and stresses plus warp and clip plane. However I’d like to use ParaView bc of the ecosystem. However whenever I try to warp or clip a volume r…

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## [Upcoming ParaView Training Courses - February 2025](https://discourse.paraview.org/t/upcoming-paraview-training-courses-february-2025/15779)

<div class="topic-metadata">

**Author:** [@NickBearup](https://discourse.paraview.org/u/NickBearup)\
**Replies:** 0\
**Last updated:** [November 25, 2024, 7:07pm UTC](https://discourse.paraview.org/t/upcoming-paraview-training-courses-february-2025/15779 "2024-11-25T19:07:10Z")

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Kitware will be hosting two remote ParaView training courses coming up in February! ParaView User Course - February 3rd, 4th from 1pm - 5pm EST ParaView Developer Course - February 10th, 11th from 1pm - 5pm EST For mo…

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## [Controlling Paraview GUI from Spyder (Python IDLE)](https://discourse.paraview.org/t/controlling-paraview-gui-from-spyder-python-idle/15638)

<div class="topic-metadata">

**Author:** [@Captain\_Convergence](https://discourse.paraview.org/u/Captain_Convergence)\
**Replies:** 0\
**Last updated:** [October 25, 2024, 3:10pm UTC](https://discourse.paraview.org/t/controlling-paraview-gui-from-spyder-python-idle/15638 "2024-10-25T15:10:15Z")

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Dear all, I would like to use Spyder as my IDLE to debug python codes in ParaView. Is there any way to set spyder as IDLE in Windows? I’ve found a lot of material in Linux but in this case I need to use windows. Thank …

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## [Render Converge mass fraction 3D files](https://discourse.paraview.org/t/render-converge-mass-fraction-3d-files/15549)

<div class="topic-metadata">

**Author:** [@Kumar](https://discourse.paraview.org/u/Kumar)\
**Replies:** 0\
**Last updated:** [October 14, 2024, 2:17pm UTC](https://discourse.paraview.org/t/render-converge-mass-fraction-3d-files/15549 "2024-10-14T14:17:12Z")

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My current rendering is like the first picture. How to render it like second picture?

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## [Xdfm file with mixed element topology](https://discourse.paraview.org/t/xdfm-file-with-mixed-element-topology/15118)

<div class="topic-metadata">

**Author:** [@chemakm](https://discourse.paraview.org/u/chemakm)\
**Replies:** 0\
**Last updated:** [July 25, 2024, 8:59am UTC](https://discourse.paraview.org/t/xdfm-file-with-mixed-element-topology/15118 "2024-07-25T08:59:39Z")

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Hi, I have a question about opening mixed topology saved in Xdmf format in Paraview. I am writing the the attribues in HDF files (.h5) and the I genetrate also the .xmf file. As I have a grid with different types of el…

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## ["Render points as spheres" completely messes up the depth / Z-Order of the points](https://discourse.paraview.org/t/render-points-as-spheres-completely-messes-up-the-depth-z-order-of-the-points/17346)

<div class="topic-metadata">

**Author:** [@Oblomov](https://discourse.paraview.org/u/Oblomov)\
**Replies:** 0\
**Last updated:** [December 4, 2025, 11:12am UTC](https://discourse.paraview.org/t/render-points-as-spheres-completely-messes-up-the-depth-z-order-of-the-points/17346 "2025-12-04T11:12:51Z")

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There seems to be an issue with the “Render points as spheres” option that fails to account for the depth / Z-order of the points (with respect to the camera), resulting in the spheres being rendered in random order, so…

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## [Last call for ParaView courses on April 2025!](https://discourse.paraview.org/t/last-call-for-paraview-courses-on-april-2025/16368)

<div class="topic-metadata">

**Author:** [@Francois\_Mazen](https://discourse.paraview.org/u/Francois_Mazen)\
**Replies:** 0\
**Last updated:** [March 21, 2025, 3:12pm UTC](https://discourse.paraview.org/t/last-call-for-paraview-courses-on-april-2025/16368 "2025-03-21T15:12:13Z")

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Kitware Europe will be hosting two remote ParaView training courses coming up in April. ParaView User on April 14th: https://www.kitware.eu/paraview-user-training/ ParaView Advanced on April 15th: https://www.kitware.e…

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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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## [Paraview 5.10.1 automatically crashes with MFIX built-in case](https://discourse.paraview.org/t/paraview-5-10-1-automatically-crashes-with-mfix-built-in-case/17645)

<div class="topic-metadata">

**Author:** [@ultrayi](https://discourse.paraview.org/u/ultrayi)\
**Replies:** 1\
**Last updated:** [July 2, 2026, 1:55pm UTC](https://discourse.paraview.org/t/paraview-5-10-1-automatically-crashes-with-mfix-built-in-case/17645 "2026-07-02T13:55:53Z")

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ParaView keeps crashing whenever I try to “apply” after open the RES output files generated by the built-in Fluid Bed 2D case in MFIX. OS： Win 10/ Win 11 Thanks a lot. FLUID\_BED\_TFM\_2D.RES (2.1 MB) RES file name: FLU…

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## [plot over time only update to add new time steps instead of re reading all data?](https://discourse.paraview.org/t/plot-over-time-only-update-to-add-new-time-steps-instead-of-re-reading-all-data/16005)

<div class="topic-metadata">

**Author:** [@otaolafr](https://discourse.paraview.org/u/otaolafr)\
**Replies:** 1\
**Last updated:** [January 21, 2025, 10:42am UTC](https://discourse.paraview.org/t/plot-over-time-only-update-to-add-new-time-steps-instead-of-re-reading-all-data/16005 "2025-01-21T10:42:10Z")

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Is it possible to when we use refresh, that the plot over time data filter, ‘just’ reads the new timesteps? instead of reading again the complete data set? thanks in advance

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## [The variation of physical quantities with position](https://discourse.paraview.org/t/the-variation-of-physical-quantities-with-position/15676)

<div class="topic-metadata">

**Author:** [@Guanlong](https://discourse.paraview.org/u/Guanlong)\
**Replies:** 1\
**Last updated:** [November 4, 2024, 11:19am UTC](https://discourse.paraview.org/t/the-variation-of-physical-quantities-with-position/15676 "2024-11-04T11:19:52Z")

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Hello, researchers. As shown in the figure, how can I obtain the variation of voidfraction on this section with the axial X position? Thank you very much.

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## [Probably a bug in VTK file](https://discourse.paraview.org/t/probably-a-bug-in-vtk-file/15521)

<div class="topic-metadata">

**Author:** [@Elisan\_Magalhaes](https://discourse.paraview.org/u/Elisan_Magalhaes)\
**Replies:** 1\
**Last updated:** [October 8, 2024, 5:54pm UTC](https://discourse.paraview.org/t/probably-a-bug-in-vtk-file/15521 "2024-10-08T17:54:25Z")

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temperature\_field\_bin.vtk (858 Bytes) I’m experiencing a bug in Paraview 5.13, I do not know if is my file that is wrong or whaterver. But Paraview is not plotting the image for this file and it is not giving a bug mess…

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## [issue with bounding ruler major/medium/minor axis with cube](https://discourse.paraview.org/t/issue-with-bounding-ruler-major-medium-minor-axis-with-cube/17746)

<div class="topic-metadata">

**Author:** [@otaolafr](https://discourse.paraview.org/u/otaolafr)\
**Replies:** 2\
**Last updated:** [September 30, 2026, 10:31am UTC](https://discourse.paraview.org/t/issue-with-bounding-ruler-major-medium-minor-axis-with-cube/17746 "2026-09-30T10:31:28Z")

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Hello, I got a unsuspected behavior while using the aligned axis in paraview. this is a special case and i think the issue is coming from the eigen values as it can be problematic with ‘cubic’ data. in any case: if i …

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## [vtkOutputWindow](https://discourse.paraview.org/t/vtkoutputwindow/15336)

<div class="topic-metadata">

**Author:** [@Ali\_Rahnama](https://discourse.paraview.org/u/Ali_Rahnama)\
**Replies:** 0\
**Last updated:** [September 2, 2024, 11:38am UTC](https://discourse.paraview.org/t/vtkoutputwindow/15336 "2024-09-02T11:38:39Z")

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I’m using a python code that hides paraview error by using the following: no\_op\_output\_window = NoOpOutputWindow() vtk.vtkOutputWindow.SetInstance(no\_op\_output\_window) in which : Define a no-op vtkOutputWindow class c…

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## [Slow animation + First Time Step Stays](https://discourse.paraview.org/t/slow-animation-first-time-step-stays/15267)

<div class="topic-metadata">

**Author:** [@snhordy](https://discourse.paraview.org/u/snhordy)\
**Replies:** 0\
**Last updated:** [August 21, 2024, 4:30pm UTC](https://discourse.paraview.org/t/slow-animation-first-time-step-stays/15267 "2024-08-21T16:30:05Z")

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Hi all, for some reason the first time step is staying in my animation no matter what and is overlayed with the ongoing animation. This shows up as a pink line at the beginning in time manager. All my settings have been …

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## [ParaView Office Hours August 20, 2026](https://discourse.paraview.org/t/paraview-office-hours-august-20-2026/17690)

<div class="topic-metadata">

**Author:** [@Bob\_Obara](https://discourse.paraview.org/u/Bob_Obara)\
**Replies:** 1\
**Last updated:** [August 20, 2026, 7:30pm UTC](https://discourse.paraview.org/t/paraview-office-hours-august-20-2026/17690 "2026-08-20T19:30:29Z")

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You have questions, we have answers. Meet with ParaView experts at this week’s office hours! ParaView office hours Thursday, August 20 · 3:30 – 5:00pm Time zone: America/New\_York Google Meet joining info Video call …

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## [Resample with dataset when data is contained in main axis planes](https://discourse.paraview.org/t/resample-with-dataset-when-data-is-contained-in-main-axis-planes/17650)

<div class="topic-metadata">

**Author:** [@Captain\_Convergence](https://discourse.paraview.org/u/Captain_Convergence)\
**Replies:** 1\
**Last updated:** [July 7, 2026, 8:58am UTC](https://discourse.paraview.org/t/resample-with-dataset-when-data-is-contained-in-main-axis-planes/17650 "2026-07-07T08:58:10Z")

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Dear support, I am trying to interpolate a point cloud contained in the ZX axis (so the bounding box of the dataset is zero in the Y direction with Delta Y = 0) into a much more dense mesh using the snap to closest cell…

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## [CFP for ISAV: In Situ AI, Analysis and Visualization at #SC26](https://discourse.paraview.org/t/cfp-for-isav-in-situ-ai-analysis-and-visualization-at-sc26/17542)

<div class="topic-metadata">

**Author:** [@mclarsen](https://discourse.paraview.org/u/mclarsen)\
**Replies:** 0\
**Last updated:** [April 30, 2026, 6:45pm UTC](https://discourse.paraview.org/t/cfp-for-isav-in-situ-ai-analysis-and-visualization-at-sc26/17542 "2026-04-30T18:45:27Z")

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Workshop Theme HPC platforms and applications have reached such large scale, complexity, and heterogeneity, that a major challenge has become the wide gap between our ability to compute extreme-scale data and our abil…

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## [ParaView Office Hours (August 20, 2025)](https://discourse.paraview.org/t/paraview-office-hours-august-20-2025/17118)

<div class="topic-metadata">

**Author:** [@Sankhesh\_Jhaveri](https://discourse.paraview.org/u/Sankhesh_Jhaveri)\
**Replies:** 0\
**Last updated:** [August 20, 2025, 2:50pm UTC](https://discourse.paraview.org/t/paraview-office-hours-august-20-2025/17118 "2025-08-20T14:50:08Z")

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Please join @dcthomp (David Thompson) and me (Sankhesh Jhaveri) at ParaView Office Hours on Thursday, August 20, 2025, from 3:30 - 5:00 pm Eastern time. This is an opportunity to get your questions about using ParaView a…

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## [improve text warping script to programmable filter](https://discourse.paraview.org/t/improve-text-warping-script-to-programmable-filter/17703)

<div class="topic-metadata">

**Author:** [@otaolafr](https://discourse.paraview.org/u/otaolafr)\
**Replies:** 2\
**Last updated:** [August 28, 2026, 8:14am UTC](https://discourse.paraview.org/t/improve-text-warping-script-to-programmable-filter/17703 "2026-08-28T08:14:31Z")

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Hello, currently one defines the script in a string and sends it to the programmable filter: such as: script="""import math 1+1 .... """ programmableFilter.Script=script #or the new Set method.... this works fine. th…

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## [Save Data from several results file in the same .csv](https://discourse.paraview.org/t/save-data-from-several-results-file-in-the-same-csv/16280)

<div class="topic-metadata">

**Author:** [@Boone](https://discourse.paraview.org/u/Boone)\
**Replies:** 1\
**Last updated:** [March 10, 2025, 3:37pm UTC](https://discourse.paraview.org/t/save-data-from-several-results-file-in-the-same-csv/16280 "2025-03-10T15:37:47Z")

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Hi all, I would like to save data from several result files (plot over line of 3 .plt files in my case) in the same .csv file. On the attached picture, I would like to save the data corresponding to the 3 lines (dumpR7,…

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## [Howto visualize wind‐comfort (Nen8100) instead of raw m/s](https://discourse.paraview.org/t/howto-visualize-wind-comfort-nen8100-instead-of-raw-m-s/16827)

<div class="topic-metadata">

**Author:** [@crz\_06](https://discourse.paraview.org/u/crz_06)\
**Replies:** 0\
**Last updated:** [June 17, 2025, 9:43am UTC](https://discourse.paraview.org/t/howto-visualize-wind-comfort-nen8100-instead-of-raw-m-s/16827 "2025-06-17T09:43:20Z")

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I am new to the field of FCD and paraview, so bare with me :wink: I ran a wind simulation for an urban size for single wind direction (using intermediary Eddy3D in Rhino3D for BlueCFD). The question is how can I visual…

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## [error reading pvti in paraview](https://discourse.paraview.org/t/error-reading-pvti-in-paraview/16229)

<div class="topic-metadata">

**Author:** [@aliz2](https://discourse.paraview.org/u/aliz2)\
**Replies:** 0\
**Last updated:** [February 24, 2025, 9:26am UTC](https://discourse.paraview.org/t/error-reading-pvti-in-paraview/16229 "2025-02-24T09:26:20Z")

</div>

Hi there, I’m trying to generate vtk image data in parallel (pvti) to read from series of vti files written by vtk.vtkXMLImageDataWriter() from 2d numpy arrays but getting below error related to extent: ERROR: In vtkXM…

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

<div class="topic-metadata">

**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")

</div>

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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## [How to free up the storage shown in the bottom right corner?](https://discourse.paraview.org/t/how-to-free-up-the-storage-shown-in-the-bottom-right-corner/17756)

<div class="topic-metadata">

**Author:** [@marissa.walser](https://discourse.paraview.org/u/marissa.walser)\
**Replies:** 1\
**Last updated:** [October 5, 2026, 10:50am UTC](https://discourse.paraview.org/t/how-to-free-up-the-storage-shown-in-the-bottom-right-corner/17756 "2026-10-05T10:50:14Z")

</div>

(This might be a stupid question, but unfortunately I do not know the proper name of the thing I’m worried about, so I can’t easily look it up) I have been using Paraview 6.1.0 on Windows 10 and with everything I do the…

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## [Unexpected behavior of MaxStepDistance in TemporalParticlesToPathlines](https://discourse.paraview.org/t/unexpected-behavior-of-maxstepdistance-in-temporalparticlestopathlines/17643)

<div class="topic-metadata">

**Author:** [@anahitanaj](https://discourse.paraview.org/u/anahitanaj)\
**Replies:** 1\
**Last updated:** [July 6, 2026, 4:08pm UTC](https://discourse.paraview.org/t/unexpected-behavior-of-maxstepdistance-in-temporalparticlestopathlines/17643 "2026-07-06T16:08:54Z")

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Hi everyone, I am using ParticleTracer followed by TemporalParticlesToPathlines in ParaView 6.0 to visualize the pathlines in the blood vessels of the body using 4D flow MRI data. I use: ForceReinjectionEveryNSteps = …

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

<div class="topic-metadata">

**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")

</div>

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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## [Survey on use of VR/XR in ParaView](https://discourse.paraview.org/t/survey-on-use-of-vr-xr-in-paraview/17647)

<div class="topic-metadata">

**Author:** [@cory.quammen](https://discourse.paraview.org/u/cory.quammen)\
**Replies:** 0\
**Last updated:** [July 4, 2026, 3:30pm UTC](https://discourse.paraview.org/t/survey-on-use-of-vr-xr-in-paraview/17647 "2026-07-04T15:30:33Z")

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Hi folks, I’m conducing an unscientific survey to get a sense of how many people are using or interested in using VR/XR capabilities in ParaView. Please fill out the poll below if you use ParaView for VR/XR with either …

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## [Q-criterion calculation for cell-based .pvtu files](https://discourse.paraview.org/t/q-criterion-calculation-for-cell-based-pvtu-files/15742)

<div class="topic-metadata">

**Author:** [@CFDER-HF](https://discourse.paraview.org/u/CFDER-HF)\
**Replies:** 0\
**Last updated:** [November 19, 2024, 6:14am UTC](https://discourse.paraview.org/t/q-criterion-calculation-for-cell-based-pvtu-files/15742 "2024-11-19T06:14:03Z")

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Dear all, I am attempting to calculate the Q-criterion for my cell-based data stored in a .pvtu file along with its associated .vtu files. After converting the cell-based data to point data, I used the ‘Gradient’ filter…

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## [ParaView Office Hours July 23, 2026](https://discourse.paraview.org/t/paraview-office-hours-july-23-2026/17661)

<div class="topic-metadata">

**Author:** [@cory.quammen](https://discourse.paraview.org/u/cory.quammen)\
**Replies:** 1\
**Last updated:** [July 23, 2026, 7:42pm UTC](https://discourse.paraview.org/t/paraview-office-hours-july-23-2026/17661 "2026-07-23T19:42:09Z")

</div>

You have questions, we have answers. Meet with ParaView experts at this week’s office hours! ParaView office hours Thursday, July 23 · 3:30 – 5:00pm Time zone: America/New\_York Google Meet joining info Video call li…

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## [sperate stream lines from a custo source](https://discourse.paraview.org/t/sperate-stream-lines-from-a-custo-source/16410)

<div class="topic-metadata">

**Author:** [@otaolafr](https://discourse.paraview.org/u/otaolafr)\
**Replies:** 1\
**Last updated:** [April 1, 2025, 8:17am UTC](https://discourse.paraview.org/t/sperate-stream-lines-from-a-custo-source/16410 "2025-04-01T08:17:13Z")

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Hello, I have created stream lines in my simulation using streamTracerWithCustomSource. and using the points of the inlet patch of my mesh as origin of the streams. this works great. what I am looking to do now, is samp…

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## [Calculator/slice error](https://discourse.paraview.org/t/calculator-slice-error/16104)

<div class="topic-metadata">

**Author:** [@johnxia](https://discourse.paraview.org/u/johnxia)\
**Replies:** 1\
**Last updated:** [February 5, 2025, 8:12am UTC](https://discourse.paraview.org/t/calculator-slice-error/16104 "2025-02-05T08:12:38Z")

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A variable created using the calculator filter does not show up in the slice filter so it cannot be plotted. Paraview 5.12 on Mac Apple M2 Pro. Is there a workaround?

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## [Requires compute dihedral angel in a polydata](https://discourse.paraview.org/t/requires-compute-dihedral-angel-in-a-polydata/15722)

<div class="topic-metadata">

**Author:** [@Juan\_Jose\_Casafranca](https://discourse.paraview.org/u/Juan_Jose_Casafranca)\
**Replies:** 1\
**Last updated:** [November 14, 2024, 9:56am UTC](https://discourse.paraview.org/t/requires-compute-dihedral-angel-in-a-polydata/15722 "2024-11-14T09:56:59Z")

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I have a surface mesh made of triangle cells. I would like to compute the dihedral angle for each edge in the mesh. I have found the FeatureEdge filter, which must be computing the dihedral angle, but I haven’t find any…

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## [Paraview Line type window proble](https://discourse.paraview.org/t/paraview-line-type-window-proble/16386)

<div class="topic-metadata">

**Author:** [@Sonia\_Akter](https://discourse.paraview.org/u/Sonia_Akter)\
**Replies:** 2\
**Last updated:** [March 26, 2025, 1:35pm UTC](https://discourse.paraview.org/t/paraview-line-type-window-proble/16386 "2025-03-26T13:35:30Z")

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Hi, I am facing some problem in the window of line type. How can I solve this.

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## [Work with CompositeDataSets in python calculators or programable filters](https://discourse.paraview.org/t/work-with-compositedatasets-in-python-calculators-or-programable-filters/17306)

<div class="topic-metadata">

**Author:** [@Captain\_Convergence](https://discourse.paraview.org/u/Captain_Convergence)\
**Replies:** 0\
**Last updated:** [November 13, 2025, 3:33pm UTC](https://discourse.paraview.org/t/work-with-compositedatasets-in-python-calculators-or-programable-filters/17306 "2025-11-13T15:33:12Z")

</div>

Dear support, I often come into issues in python calculators (or in programmable filters) when working with composite datasets (typically from multiblock grids) where the data is distributed among many datasets (each on…

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## [ParaView Office Hours (August 7, 2025)](https://discourse.paraview.org/t/paraview-office-hours-august-7-2025/17052)

<div class="topic-metadata">

**Author:** [@Sankhesh\_Jhaveri](https://discourse.paraview.org/u/Sankhesh_Jhaveri)\
**Replies:** 0\
**Last updated:** [August 7, 2025, 6:14pm UTC](https://discourse.paraview.org/t/paraview-office-hours-august-7-2025/17052 "2025-08-07T18:14:00Z")

</div>

Please join @spyridon97 (Spiros Tsalikis) and me (Sankhesh Jhaveri) at ParaView Office Hours today from 3:30-5:00pm Eastern time. This is an opportunity to get your questions about using ParaView answered by ParaView dev…

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## [How does MarkDirty() work?](https://discourse.paraview.org/t/how-does-markdirty-work/15016)

<div class="topic-metadata">

**Author:** [@joint](https://discourse.paraview.org/u/joint)\
**Replies:** 0\
**Last updated:** [July 9, 2024, 9:02am UTC](https://discourse.paraview.org/t/how-does-markdirty-work/15016 "2024-07-09T09:02:31Z")

</div>

Hello, dear Paraview developers! Could you clarify, please, how MarkDirty() works? Thanks!

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