# Development

**URL:** https://discourse.paraview.org/c/development/6.md?no_subcategories=false&page=3

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

**Page:** 4

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## [Bug reading Exodus file?](https://discourse.paraview.org/t/bug-reading-exodus-file/16589)

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**Author:** [@GregVernon](https://discourse.paraview.org/u/GregVernon)\
**Replies:** 1\
**Last updated:** [May 8, 2025, 3:39pm UTC](https://discourse.paraview.org/t/bug-reading-exodus-file/16589 "2025-05-08T15:39:34Z")

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I’ve got an Exodus file that I produced using Sculpt. Note that I’ve used EPU to recombine into a single file. The “stats” output from Sculpt reports 2,073,038 elements: ================ MESH SUMMARY =================…

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## [mp4 animation export from linux?](https://discourse.paraview.org/t/mp4-animation-export-from-linux/16578)

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**Author:** [@otaolafr](https://discourse.paraview.org/u/otaolafr)\
**Replies:** 1\
**Last updated:** [May 7, 2025, 7:58am UTC](https://discourse.paraview.org/t/mp4-animation-export-from-linux/16578 "2025-05-07T07:58:58Z")

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hello, while looking on the forum i found this post mentionning is only in windows ParaView - Saving Videos in pvpython and pvbatch - #2 by nicolas.vuaille is it planned to be brought to linux at one moment? thanks in …

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## [Bug with "Cell Centers" and "Plot over line" filter](https://discourse.paraview.org/t/bug-with-cell-centers-and-plot-over-line-filter/16560)

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**Author:** [@baranKucukcay](https://discourse.paraview.org/u/baranKucukcay)\
**Replies:** 1\
**Last updated:** [May 2, 2025, 9:07am UTC](https://discourse.paraview.org/t/bug-with-cell-centers-and-plot-over-line-filter/16560 "2025-05-02T09:07:39Z")

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I am currently using ParaView for post-processing while developing a solver as part of my master’s studies. In my code, the output is generated as rectilinear cells—so my data is in the form of cell data. When I apply th…

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## [Incompatible numpy and scipy versions in pvpyton](https://discourse.paraview.org/t/incompatible-numpy-and-scipy-versions-in-pvpyton/16548)

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**Author:** [@Jnsn](https://discourse.paraview.org/u/Jnsn)\
**Replies:** 8\
**Last updated:** [April 30, 2025, 8:05am UTC](https://discourse.paraview.org/t/incompatible-numpy-and-scipy-versions-in-pvpyton/16548 "2025-04-30T08:05:37Z")

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Hi ParaView Team, when using ParaView-5.13.3-osmesa-MPI-Linux-Python3.10-x86\_64/bin/pvpython and importing from scipy.spatial.transform import Rotation as R I get follwing ValueError: numpy.dtype size changed, may i…

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## [Seg-Y reader proxy](https://discourse.paraview.org/t/seg-y-reader-proxy/16499)

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**Author:** [@jeDuck](https://discourse.paraview.org/u/jeDuck)\
**Replies:** 1\
**Last updated:** [April 18, 2025, 8:33am UTC](https://discourse.paraview.org/t/seg-y-reader-proxy/16499 "2025-04-18T08:33:06Z")

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Dear Paraview developers, I failed to find the proxy definition for Seg-Y reader. I looked through all “readers\_” xml-files in Remoting-\>Application-\>Resources, but there wasn’t any.

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## [MultiVolume Rendering Optix pathtracer](https://discourse.paraview.org/t/multivolume-rendering-optix-pathtracer/16498)

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**Author:** [@alruwa16](https://discourse.paraview.org/u/alruwa16)\
**Replies:** 0\
**Last updated:** [April 17, 2025, 10:11pm UTC](https://discourse.paraview.org/t/multivolume-rendering-optix-pathtracer/16498 "2025-04-17T22:11:15Z")

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Hi everyone, I am trying to render multivolumes inside paraviews. Both volumes are rendered using volume rendering mode GPU based. When I enable both volumes to view, one volume does not rendering correctly on top of th…

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## [Failling to build ParaView-Superbuild](https://discourse.paraview.org/t/failling-to-build-paraview-superbuild/16268)

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**Author:** [@ar-valdez](https://discourse.paraview.org/u/ar-valdez)\
**Replies:** 13\
**Last updated:** [April 8, 2025, 10:41pm UTC](https://discourse.paraview.org/t/failling-to-build-paraview-superbuild/16268 "2025-04-08T22:41:52Z")

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Hi, I am trying to build ParaView-Superbuild from scratch. I want to install two plugins, (i) superquadrics to render and visualize sphero cylinders \[MercuryDPM: Visualising Superquadrics in Paraview\], and (ii) I want to…

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## [Plot3D reader problem with function file](https://discourse.paraview.org/t/plot3d-reader-problem-with-function-file/16420)

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**Author:** [@luismsfern](https://discourse.paraview.org/u/luismsfern)\
**Replies:** 5\
**Last updated:** [April 8, 2025, 1:40am UTC](https://discourse.paraview.org/t/plot3d-reader-problem-with-function-file/16420 "2025-04-08T01:40:38Z")

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Hello, It seems the Plot3D reader is unable to correctly read function files. I have a Plot3D grid file grid.xyz (binary, multi-grid, with IBlanks, double precision and written in Fortran) and a function file volume.f c…

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## [Centroid point data in same file as mesh](https://discourse.paraview.org/t/centroid-point-data-in-same-file-as-mesh/16435)

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**Author:** [@deathtime](https://discourse.paraview.org/u/deathtime)\
**Replies:** 1\
**Last updated:** [April 7, 2025, 7:48am UTC](https://discourse.paraview.org/t/centroid-point-data-in-same-file-as-mesh/16435 "2025-04-07T07:48:11Z")

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Hello, I am writing an aerodynamic solver which works on NASTRAN FEM. I am using Paraview to view my development. So far I have managed to plot the FEM in Paraview by writing a VTU file. This involves using a single pi…

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## [Hyperstreamlines for recent Paraview Versions](https://discourse.paraview.org/t/hyperstreamlines-for-recent-paraview-versions/13991)

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**Author:** [@reox](https://discourse.paraview.org/u/reox)\
**Replies:** 8\
**Last updated:** [March 26, 2025, 1:41pm UTC](https://discourse.paraview.org/t/hyperstreamlines-for-recent-paraview-versions/13991 "2025-03-26T13:41:14Z")

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I wanted to test vtkHyperStreamlines and found hints to this plugin, posted in the old bugtracker: https://vtk.org/Bug/view.php?id=8424 Unfortunately, many things seems to have changed in between and the plugin is not d…

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## [Default view direction](https://discourse.paraview.org/t/default-view-direction/16375)

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**Author:** [@jeDuck](https://discourse.paraview.org/u/jeDuck)\
**Replies:** 2\
**Last updated:** [March 26, 2025, 7:40am UTC](https://discourse.paraview.org/t/default-view-direction/16375 "2025-03-26T07:40:51Z")

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Currently when one launches Paraview, the camera orientation is set to +X. I would like to have isometric view as default in my application. How can I do that? I tried to set default\_values for CameraFocalPoint property …

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## [Filters expressions for charts](https://discourse.paraview.org/t/filters-expressions-for-charts/16382)

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**Author:** [@jeDuck](https://discourse.paraview.org/u/jeDuck)\
**Replies:** 1\
**Last updated:** [March 25, 2025, 2:11pm UTC](https://discourse.paraview.org/t/filters-expressions-for-charts/16382 "2025-03-25T14:11:17Z")

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Paraview has an option to hide some arrays via Filters Expressions in settings. Is there a way to do the same in the table for charts? It is possible to control visibility of charts, but is there a way to hide arrays fro…

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## [Problem with extension .cpp vtk\_module\_add\_module](https://discourse.paraview.org/t/problem-with-extension-cpp-vtk-module-add-module/16370)

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**Author:** [@joint](https://discourse.paraview.org/u/joint)\
**Replies:** 1\
**Last updated:** [March 24, 2025, 10:04am UTC](https://discourse.paraview.org/t/problem-with-extension-cpp-vtk-module-add-module/16370 "2025-03-24T10:04:11Z")

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Hello! I have a problem with Severity Code Description Project File Line Suppression State Details Error CMake Error at VTK/CMake/vtkModule.cmake:3393 (add\_library): Cannot find source file: File.cxx Tried e…

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## [Building Salome from github on top of Paraview 5.11.2](https://discourse.paraview.org/t/building-salome-from-github-on-top-of-paraview-5-11-2/15652)

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**Author:** [@Trophime](https://discourse.paraview.org/u/Trophime)\
**Replies:** 2\
**Last updated:** [March 14, 2025, 10:53am UTC](https://discourse.paraview.org/t/building-salome-from-github-on-top-of-paraview-5-11-2/15652 "2025-03-14T10:53:29Z")

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Hi, trying to rebuild Salome from scratch on Debian/Trixie I run into an issue with cmake when configuring GUI module: CMake Error at /usr/lib/x86\_64-linux-gnu/cmake/TBB/TBBTargets.cmake:42 (message): Some (but not al…

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## [Superbuild - ctest step not working any more](https://discourse.paraview.org/t/superbuild-ctest-step-not-working-any-more/16119)

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**Author:** [@cobo](https://discourse.paraview.org/u/cobo)\
**Replies:** 9\
**Last updated:** [February 26, 2025, 10:16pm UTC](https://discourse.paraview.org/t/superbuild-ctest-step-not-working-any-more/16119 "2025-02-26T22:16:21Z")

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New version of my ParaView custom program ready, now fighting with the “superbuild”. Everything looks like being ok, CMake and ninja are doing their jobs like previously, but the last step, for generating a package with …

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## [Update common tool bar](https://discourse.paraview.org/t/update-common-tool-bar/15612)

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**Author:** [@wascott](https://discourse.paraview.org/u/wascott)\
**Replies:** 8\
**Last updated:** [February 22, 2025, 5:51am UTC](https://discourse.paraview.org/t/update-common-tool-bar/15612 "2025-02-22T05:51:15Z")

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I would like to discuss and propose updating the common filter tool bar for the next version of ParaView. Currently, the common toolbar holds: Calculator Contour Clip Slice Threshold Extract Substet Glyph Stream Trace…

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## [ome-zarr](https://discourse.paraview.org/t/ome-zarr/16196)

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**Author:** [@arnaudbore](https://discourse.paraview.org/u/arnaudbore)\
**Replies:** 3\
**Last updated:** [February 20, 2025, 2:29pm UTC](https://discourse.paraview.org/t/ome-zarr/16196 "2025-02-20T14:29:07Z")

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Dear experts, Maybe I missed it somewhere but Is there any plan to add a reader for ome-zarr (multi scale) data ? Thank you in advance Arnaud

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## [How to hide the proxy from python?](https://discourse.paraview.org/t/how-to-hide-the-proxy-from-python/16186)

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**Author:** [@joint](https://discourse.paraview.org/u/joint)\
**Replies:** 0\
**Last updated:** [February 18, 2025, 10:21am UTC](https://discourse.paraview.org/t/how-to-hide-the-proxy-from-python/16186 "2025-02-18T10:21:03Z")

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Hello! I have a custom widget which has no python analogue And I want to hide it from the python menu How could I do it? Thanks

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## [ParaView Python Shell - command on plugin is NOT called](https://discourse.paraview.org/t/paraview-python-shell-command-on-plugin-is-not-called/16148)

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**Author:** [@joint](https://discourse.paraview.org/u/joint)\
**Replies:** 5\
**Last updated:** [February 17, 2025, 9:48am UTC](https://discourse.paraview.org/t/paraview-python-shell-command-on-plugin-is-not-called/16148 "2025-02-17T09:48:50Z")

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Hello! I use print(j.GetProperty("my\_property\_from\_XML")) Which in XML is an information\_only property which has to call some command on my plugin. However, it is not actually called, which is seen from the debugger.…

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## [ParaView versions greater 5.11 fail to display all mesh elements](https://discourse.paraview.org/t/paraview-versions-greater-5-11-fail-to-display-all-mesh-elements/15810)

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**Author:** [@Stysch](https://discourse.paraview.org/u/Stysch)\
**Replies:** 9\
**Last updated:** [February 12, 2025, 8:57am UTC](https://discourse.paraview.org/t/paraview-versions-greater-5-11-fail-to-display-all-mesh-elements/15810 "2025-02-12T08:57:20Z")

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Hi all, I’m using ParaView to display meshes from Exodus II files. This works fine with versions 5.11.0 and below, but starting from version 5.12.0, not all mesh elements are displayed. I’ve attached screenshots of both…

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## [Negative cells volume while reading Fluent .cas file](https://discourse.paraview.org/t/negative-cells-volume-while-reading-fluent-cas-file/14285)

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**Author:** [@PawelekPro](https://discourse.paraview.org/u/PawelekPro)\
**Replies:** 6\
**Last updated:** [February 12, 2025, 3:30am UTC](https://discourse.paraview.org/t/negative-cells-volume-while-reading-fluent-cas-file/14285 "2025-02-12T03:30:19Z")

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I would like to load a Fluent .cas file using Fluent case reader in paraview. After loading the file, it appears that the mesh contains elements with negative volume (I checked this with the Cell Size filter). Let me jus…

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## [ParaView now requires C++17](https://discourse.paraview.org/t/paraview-now-requires-c-17/16156)

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**Author:** [@cory.quammen](https://discourse.paraview.org/u/cory.quammen)\
**Replies:** 0\
**Last updated:** [February 11, 2025, 4:50pm UTC](https://discourse.paraview.org/t/paraview-now-requires-c-17/16156 "2025-02-11T16:50:01Z")

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ParaView now requires C++17 to build. See this merge request for details. This has required us to move forward the minimum compiler versions support to: gcc 8.0 from 4.8 LLVM Clang 5.0 from 3.3 Apple Clang 10.0 from 7…

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## [Should XML name or label be unique?](https://discourse.paraview.org/t/should-xml-name-or-label-be-unique/16147)

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**Author:** [@joint](https://discourse.paraview.org/u/joint)\
**Replies:** 3\
**Last updated:** [February 11, 2025, 3:52pm UTC](https://discourse.paraview.org/t/should-xml-name-or-label-be-unique/16147 "2025-02-11T15:52:25Z")

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Should XML name or label be unique? Thanks

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## [ParaView Plugin XML, should name == label?](https://discourse.paraview.org/t/paraview-plugin-xml-should-name-label/16144)

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**Author:** [@joint](https://discourse.paraview.org/u/joint)\
**Replies:** 1\
**Last updated:** [February 11, 2025, 8:48am UTC](https://discourse.paraview.org/t/paraview-plugin-xml-should-name-label/16144 "2025-02-11T08:48:03Z")

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Hello, nice to see u! Has name be equal to label in plugin XML? Has name be equal to command in plugin XML? Has label be equal to command in plugin XML? Where to see more documentation on plugin XMLs? Thanks

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## [Issues with getIconType](https://discourse.paraview.org/t/issues-with-geticontype/16145)

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**Author:** [@joint](https://discourse.paraview.org/u/joint)\
**Replies:** 0\
**Last updated:** [February 11, 2025, 6:25am UTC](https://discourse.paraview.org/t/issues-with-geticontype/16145 "2025-02-11T06:25:21Z")

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Hello I hva a grievous problem QString getIconType(pqOutputPort\* port) const { if (port-\>getSource()-\>property("INSITU\_EXTRACT").toBool()) { return PipelineModelIconType::INSITU\_EXTRACT; } els…

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## [How to set first output as active?](https://discourse.paraview.org/t/how-to-set-first-output-as-active/16133)

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**Author:** [@jeDuck](https://discourse.paraview.org/u/jeDuck)\
**Replies:** 1\
**Last updated:** [February 10, 2025, 7:17am UTC](https://discourse.paraview.org/t/how-to-set-first-output-as-active/16133 "2025-02-10T07:17:09Z")

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Dear Paraview developers, I have a custom plugin that has two output ports: first one is shown via XYChartView, second via SpreadsheetView. When I apply the filter, Paraview creates two layouts and sets the last output …

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## [how to avoid full rebuild after switching between commits?](https://discourse.paraview.org/t/how-to-avoid-full-rebuild-after-switching-between-commits/16123)

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**Author:** [@joint](https://discourse.paraview.org/u/joint)\
**Replies:** 3\
**Last updated:** [February 9, 2025, 2:33am UTC](https://discourse.paraview.org/t/how-to-avoid-full-rebuild-after-switching-between-commits/16123 "2025-02-09T02:33:44Z")

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Hello I use ParaView build from source with VisualStudio + CMake, opened as folder, not as a project Somehow, the project is completely rebuild after I switch between commits which only pertain to my custom plugin. Di…

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## [Run a query on one block](https://discourse.paraview.org/t/run-a-query-on-one-block/16098)

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**Author:** [@jeDuck](https://discourse.paraview.org/u/jeDuck)\
**Replies:** 3\
**Last updated:** [February 7, 2025, 8:35am UTC](https://discourse.paraview.org/t/run-a-query-on-one-block/16098 "2025-02-07T08:35:58Z")

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Dear Paraview developers, is it possible in Paraview to create a query-based selection on a set of blocks? For example, I have a multiblock, consisting of two blocks and I want to find point with maximum value in a sing…

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## [Post processing shader](https://discourse.paraview.org/t/post-processing-shader/16105)

<div class="topic-metadata">

**Author:** [@Djolalo](https://discourse.paraview.org/u/Djolalo)\
**Replies:** 0\
**Last updated:** [February 4, 2025, 12:22pm UTC](https://discourse.paraview.org/t/post-processing-shader/16105 "2025-02-04T12:22:00Z")

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Hi folks ! I’ve wanted to implement bloom using a postprocessing shader (probably GPU Downsampling). I would’ve used openGL shading syntax since I know it’s the shading language used in Paraview, but I can’t find any g…

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## [Python plugin split into multiple modules](https://discourse.paraview.org/t/python-plugin-split-into-multiple-modules/16100)

<div class="topic-metadata">

**Author:** [@marek.paty](https://discourse.paraview.org/u/marek.paty)\
**Replies:** 2\
**Last updated:** [February 4, 2025, 9:02am UTC](https://discourse.paraview.org/t/python-plugin-split-into-multiple-modules/16100 "2025-02-04T09:02:49Z")

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I am using ParaView 5.13 on linux and I would like to create a Python plugin which consists of multiple modules. The purpose is to make the structure better organized and to be able to reuse the different modules in othe…

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