# Development

**URL:** https://discourse.paraview.org/c/development/6.md?no_subcategories=false&page=16

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

**Page:** 17

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## [Do the vtkMeshQuality fonctions for "pyramids" and "wedges" really work ?](https://discourse.paraview.org/t/do-the-vtkmeshquality-fonctions-for-pyramids-and-wedges-really-work/9895)

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**Author:** [@Dav](https://discourse.paraview.org/u/Dav)\
**Replies:** 9\
**Last updated:** [June 27, 2022, 8:40am UTC](https://discourse.paraview.org/t/do-the-vtkmeshquality-fonctions-for-pyramids-and-wedges-really-work/9895 "2022-06-27T08:40:54Z")

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Dear community, I am developing a filter on vtkUnstructuredGrid with Python. When using the vtkMeshQuality filter for example to determine the volume of “pyramids” cells with the functions vtkMeshQuality: :PyramidVolum…

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## [Trouble with time-dependent vtu file](https://discourse.paraview.org/t/trouble-with-time-dependent-vtu-file/9885)

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**Author:** [@walker\_tr9](https://discourse.paraview.org/u/walker_tr9)\
**Replies:** 4\
**Last updated:** [June 24, 2022, 7:33am UTC](https://discourse.paraview.org/t/trouble-with-time-dependent-vtu-file/9885 "2022-06-24T07:33:16Z")

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I have a .vtu file that contains time-dependent data. It works fine in version 5.7 of paraview. However, from 5.8 and up, it crashes at some point. Sometimes, I can view the time-dependent data just fine, but eventual…

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## [\[Python\] Calculator formulae](https://discourse.paraview.org/t/python-calculator-formulae/7427)

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**Author:** [@mwestphal](https://discourse.paraview.org/u/mwestphal)\
**Replies:** 24\
**Last updated:** [June 23, 2022, 1:45pm UTC](https://discourse.paraview.org/t/python-calculator-formulae/7427 "2022-06-23T13:45:43Z")

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In line with the recent improvements to the Programmable filters and python editor \[1\], we are thinking of improving the calculator and python calculator formulaes managements. One could think to rely on the python edit…

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## [Multi-Touch or Tuio in Paraview](https://discourse.paraview.org/t/multi-touch-or-tuio-in-paraview/9815)

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**Author:** [@KC\_RITE](https://discourse.paraview.org/u/KC_RITE)\
**Replies:** 9\
**Last updated:** [June 17, 2022, 5:48am UTC](https://discourse.paraview.org/t/multi-touch-or-tuio-in-paraview/9815 "2022-06-17T05:48:48Z")

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I am working on a medical visualization project where they have asked for Multi-Touch or gesture support in Paraview. While I think it may be possible I am not sure. Are there any projects out there or is this something …

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## [Documentation about reading and review CI results](https://discourse.paraview.org/t/documentation-about-reading-and-review-ci-results/9821)

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**Author:** [@mwestphal](https://discourse.paraview.org/u/mwestphal)\
**Replies:** 0\
**Last updated:** [June 16, 2022, 7:41am UTC](https://discourse.paraview.org/t/documentation-about-reading-and-review-ci-results/9821 "2022-06-16T07:41:25Z")

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A documentation about reading and reviewing CI results has just been merged. You may want to read it: https://gitlab.kitware.com/paraview/paraview/-/blob/master/Documentation/dev/git/develop.md#reading-ci-results

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## [Documentation should have link for reporting issues](https://discourse.paraview.org/t/documentation-should-have-link-for-reporting-issues/9811)

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**Author:** [@rweigel](https://discourse.paraview.org/u/rweigel)\
**Replies:** 3\
**Last updated:** [June 15, 2022, 2:55pm UTC](https://discourse.paraview.org/t/documentation-should-have-link-for-reporting-issues/9811 "2022-06-15T14:55:14Z")

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I found an error in the documentation 5. Programmable Filter — ParaView Documentation 5.10.0 documentation and it is not clear where I should report the issue. (Helix script will not work in ParaView versions that use …

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## [Build ParaView with LLVM on Windows](https://discourse.paraview.org/t/build-paraview-with-llvm-on-windows/9790)

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**Author:** [@Cam](https://discourse.paraview.org/u/Cam)\
**Replies:** 6\
**Last updated:** [June 14, 2022, 4:57pm UTC](https://discourse.paraview.org/t/build-paraview-with-llvm-on-windows/9790 "2022-06-14T16:57:58Z")

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Has anyone tried to use LLVM (with clang) to build ParaView on Windows platform and succeeded? I just don’t want to use MSVC anymore…

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## [ParaView Async : ServerManager API for Python](https://discourse.paraview.org/t/paraview-async-servermanager-api-for-python/9570)

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**Author:** [@Christos\_Tsolakis](https://discourse.paraview.org/u/Christos_Tsolakis)\
**Replies:** 4\
**Last updated:** [June 14, 2022, 12:50pm UTC](https://discourse.paraview.org/t/paraview-async-servermanager-api-for-python/9570 "2022-06-14T12:50:37Z")

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As hinted in a previous post, many components of ParaView need to be revisited in order to incorporate the asynchronous features of ParaView Async. The focus of this post is the new Asynchronous API and specifically how …

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## [Can paraview be implanted into programme?](https://discourse.paraview.org/t/can-paraview-be-implanted-into-programme/9780)

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**Author:** [@THUClifford](https://discourse.paraview.org/u/THUClifford)\
**Replies:** 4\
**Last updated:** [June 10, 2022, 9:30am UTC](https://discourse.paraview.org/t/can-paraview-be-implanted-into-programme/9780 "2022-06-10T09:30:19Z")

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Hello, I am working with a programme and there is a function about visualization needed, I used to deal with visualization things with paraview, therefore is it possible to implant paraview service into self-programme? …

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## [Extract Range from slice representation](https://discourse.paraview.org/t/extract-range-from-slice-representation/9766)

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**Author:** [@fvitello](https://discourse.paraview.org/u/fvitello)\
**Replies:** 2\
**Last updated:** [June 9, 2022, 12:34pm UTC](https://discourse.paraview.org/t/extract-range-from-slice-representation/9766 "2022-06-09T12:34:42Z")

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Dear all, how can I extract, in my cpp custom application, the min/max values of the visualized slice? Thanks

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## [Is it possible to have XML format to share points and cells?](https://discourse.paraview.org/t/is-it-possible-to-have-xml-format-to-share-points-and-cells/9700)

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**Author:** [@Cam](https://discourse.paraview.org/u/Cam)\
**Replies:** 3\
**Last updated:** [June 8, 2022, 7:01am UTC](https://discourse.paraview.org/t/is-it-possible-to-have-xml-format-to-share-points-and-cells/9700 "2022-06-08T07:01:08Z")

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Say I have 3 .vtu files which can be put into one .pvd file. \<VTKFile type="Collection" version="1.0" byte\_order="LittleEndian" header\_type="UInt64"\> \<Collection\> \<DataSet timestep="0" part="0" file="a/a\_0\_0.vtu"/\>…

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## [About timeseries and potential groupseries](https://discourse.paraview.org/t/about-timeseries-and-potential-groupseries/9722)

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**Author:** [@mwestphal](https://discourse.paraview.org/u/mwestphal)\
**Replies:** 6\
**Last updated:** [June 7, 2022, 6:30pm UTC](https://discourse.paraview.org/t/about-timeseries-and-potential-groupseries/9722 "2022-06-07T18:30:27Z")

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The original timeseries can be a bit confusing. A user can see something like: myFile...vtu In the file dialog and will click on it without knowing what it does and ends up in a strange situation with timesteps that d…

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## [build paraview for QNX system](https://discourse.paraview.org/t/build-paraview-for-qnx-system/9256)

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**Author:** [@sharon](https://discourse.paraview.org/u/sharon)\
**Replies:** 2\
**Last updated:** [June 4, 2022, 12:48am UTC](https://discourse.paraview.org/t/build-paraview-for-qnx-system/9256 "2022-06-04T00:48:38Z")

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QNX system are used for Electric vehicle and it is popular to show some 3D car model on touch screen, I am not sure can we cross compile paraview for QNX system? Dose this is supported or not? Anyone tried can give me …

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## [In-Transit Catalyst implementation based on ADIOS2](https://discourse.paraview.org/t/in-transit-catalyst-implementation-based-on-adios2/9718)

<div class="topic-metadata">

**Author:** [@nicolas.vuaille](https://discourse.paraview.org/u/nicolas.vuaille)\
**Replies:** 2\
**Last updated:** [June 3, 2022, 2:08pm UTC](https://discourse.paraview.org/t/in-transit-catalyst-implementation-based-on-adios2/9718 "2022-06-03T14:08:14Z")

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To extend Catalyst (1) with In-Transit capabilities, we are designing an implementation based on the ADIOS2 library (2). Context Catalyst is the favored tool to perform in-situ analysis with ParaView, running your pipel…

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## [Access metadata](https://discourse.paraview.org/t/access-metadata/9719)

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**Author:** [@fvitello](https://discourse.paraview.org/u/fvitello)\
**Replies:** 0\
**Last updated:** [June 1, 2022, 10:03am UTC](https://discourse.paraview.org/t/access-metadata/9719 "2022-06-01T10:03:24Z")

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Hi all, in my c++ application I want to access (client side) the Metadata object I have added to the InformationObject object in my custom reader outVec-\>GetInformationObject(0)-\>Set(META\_DATA(), this-\>MetaData); How …

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## [Build Container](https://discourse.paraview.org/t/build-container/9697)

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**Author:** [@Allen\_Barnett](https://discourse.paraview.org/u/Allen_Barnett)\
**Replies:** 1\
**Last updated:** [June 1, 2022, 9:39am UTC](https://discourse.paraview.org/t/build-container/9697 "2022-06-01T09:39:08Z")

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I’d like to try to fix a bug I found. Is there a Docker container which has all the pieces in place necessary to build paraview? Thanks, Allen

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## [Broken Links in Developer documentation](https://discourse.paraview.org/t/broken-links-in-developer-documentation/9399)

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**Author:** [@Fabian](https://discourse.paraview.org/u/Fabian)\
**Replies:** 8\
**Last updated:** [May 23, 2022, 6:41pm UTC](https://discourse.paraview.org/t/broken-links-in-developer-documentation/9399 "2022-05-23T18:41:20Z")

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In Documentation/dev/git/develop.md in the section 1. (Optional but highly recommended.) Register with the ParaView project on Kitware’s CDash instance to better know how your code performs in regression tests. After re…

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## [AmbientColor on surface representation](https://discourse.paraview.org/t/ambientcolor-on-surface-representation/9647)

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**Author:** [@fvitello](https://discourse.paraview.org/u/fvitello)\
**Replies:** 6\
**Last updated:** [May 20, 2022, 8:08am UTC](https://discourse.paraview.org/t/ambientcolor-on-surface-representation/9647 "2022-05-20T08:08:47Z")

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Dear all, In my c++ custom application I want to the surface representation of my contour filter to a solid color. I have tried to change the property but the color doesn’t change. Can you help me to understand what i…

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## [how to check the sequence of topology](https://discourse.paraview.org/t/how-to-check-the-sequence-of-topology/9651)

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**Author:** [@andi](https://discourse.paraview.org/u/andi)\
**Replies:** 1\
**Last updated:** [May 19, 2022, 3:01pm UTC](https://discourse.paraview.org/t/how-to-check-the-sequence-of-topology/9651 "2022-05-19T15:01:06Z")

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\[Google Drive: Sign-in\] i have a problem once i make a fine grid 400x400 i guess the problem is from connectivity on the y-axis of my image, is noa as my expectation, maybe due to on the sequence of the connectivit…

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## [Python shell in custom application](https://discourse.paraview.org/t/python-shell-in-custom-application/9263)

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**Author:** [@fvitello](https://discourse.paraview.org/u/fvitello)\
**Replies:** 1\
**Last updated:** [May 15, 2022, 8:22pm UTC](https://discourse.paraview.org/t/python-shell-in-custom-application/9263 "2022-05-15T20:22:32Z")

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I am trying to add a python shell in my custom application like in the ParaView Client application. How can I configure my CMakeLists.txt? I have added the following target\_link\_libraries(paraview\_clone1 PRIVATE …

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## [Problem with MPI\_Comm in ParaView 5.10.0 RC1 when using External MPI version](https://discourse.paraview.org/t/problem-with-mpi-comm-in-paraview-5-10-0-rc1-when-using-external-mpi-version/8222)

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**Author:** [@joeh](https://discourse.paraview.org/u/joeh)\
**Replies:** 26\
**Last updated:** [May 15, 2022, 7:35pm UTC](https://discourse.paraview.org/t/problem-with-mpi-comm-in-paraview-5-10-0-rc1-when-using-external-mpi-version/8222 "2022-05-15T19:35:02Z")

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There is a new issue in ParaView 5.10.0-RC1 when using External MPI version that was not present when doing the same with ParaView 5.9.1 or below. When building ParaView 5.1.0-RC1 with the superbuild script and utilizin…

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## [ParaView 5.10.1 sub window response time](https://discourse.paraview.org/t/paraview-5-10-1-sub-window-response-time/9618)

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**Author:** [@kirit\_101](https://discourse.paraview.org/u/kirit_101)\
**Replies:** 1\
**Last updated:** [May 13, 2022, 7:04am UTC](https://discourse.paraview.org/t/paraview-5-10-1-sub-window-response-time/9618 "2022-05-13T07:04:34Z")

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I am using ParaView 5.10.1 on my windows machine. When I go File\>Open (or File \> Save State) it takes ~ 20 seconds for the program to open the sub-window. I have tried the same approach with ParaView 5.9.1, it instantan…

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## [Avoiding nested scrollbars](https://discourse.paraview.org/t/avoiding-nested-scrollbars/9523)

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**Author:** [@utkarsh.ayachit](https://discourse.paraview.org/u/utkarsh.ayachit)\
**Replies:** 14\
**Last updated:** [May 12, 2022, 8:08am UTC](https://discourse.paraview.org/t/avoiding-nested-scrollbars/9523 "2022-05-12T08:08:08Z")

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For a really long time, I have been annoyed by ParaView’s propensity to show nested scrollbars. For example, see the information panel: The same thing happens on Properties panel too when widgets for array selection …

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## [\[Proposition\] Using an Information Property to optimize ResetScalarRangeToDataOverTime](https://discourse.paraview.org/t/proposition-using-an-information-property-to-optimize-resetscalarrangetodataovertime/9614)

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**Author:** [@nicolas.vuaille](https://discourse.paraview.org/u/nicolas.vuaille)\
**Replies:** 2\
**Last updated:** [May 11, 2022, 2:02pm UTC](https://discourse.paraview.org/t/proposition-using-an-information-property-to-optimize-resetscalarrangetodataovertime/9614 "2022-05-11T14:02:46Z")

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This is a follow up of a previous post on VTK discourse Use case We read some temporal data. For the visualization we choose an array and we want to setup a lookup table with the union of all the data ranges over time, …

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## [Limit of number of points in Paraview](https://discourse.paraview.org/t/limit-of-number-of-points-in-paraview/9607)

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**Author:** [@PhDFlo](https://discourse.paraview.org/u/PhDFlo)\
**Replies:** 2\
**Last updated:** [May 11, 2022, 7:00am UTC](https://discourse.paraview.org/t/limit-of-number-of-points-in-paraview/9607 "2022-05-11T07:00:01Z")

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Hi everyone, I’m using Paraview 5.9.1. I am working on very large meshes and I have some difficulties to open these large meshes. I have seen some topics about this subject in older versions of Paraview, it was written …

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## [Multiblock Inspector not working as expected](https://discourse.paraview.org/t/multiblock-inspector-not-working-as-expected/9576)

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**Author:** [@bflandard](https://discourse.paraview.org/u/bflandard)\
**Replies:** 2\
**Last updated:** [May 9, 2022, 6:36pm UTC](https://discourse.paraview.org/t/multiblock-inspector-not-working-as-expected/9576 "2022-05-09T18:36:15Z")

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Hello Paraview, If the opacity of a block (call it block A) is modified using the Multiblock Inspector, and then another block (call it block B) is hidden by unchecking its box in the Multiblock Inspector, block A will …

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## [Dynamically set min and max for slider bar in ParaView filter](https://discourse.paraview.org/t/dynamically-set-min-and-max-for-slider-bar-in-paraview-filter/9581)

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**Author:** [@RHMoore](https://discourse.paraview.org/u/RHMoore)\
**Replies:** 0\
**Last updated:** [May 6, 2022, 7:52pm UTC](https://discourse.paraview.org/t/dynamically-set-min-and-max-for-slider-bar-in-paraview-filter/9581 "2022-05-06T19:52:17Z")

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I would like to set the minimum and maximum slider bar limits dynamically using C++ inside ParaView’s filter GUI. I have a ParaView build of 5.10.0 on Windows. The limits are read in from a file, so I don’t have somethin…

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## [2DCORECTMESH displaying on YZ plane instead of XY plane](https://discourse.paraview.org/t/2dcorectmesh-displaying-on-yz-plane-instead-of-xy-plane/9535)

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**Author:** [@fchan5](https://discourse.paraview.org/u/fchan5)\
**Replies:** 0\
**Last updated:** [April 28, 2022, 4:30pm UTC](https://discourse.paraview.org/t/2dcorectmesh-displaying-on-yz-plane-instead-of-xy-plane/9535 "2022-04-28T16:30:12Z")

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Hi, I am writing two XDMF files, one containing TopologyType=2DCORECTMESH with GeometryType=ORIGIN\_DXDY and the other containing TopologyType=Polyvertex topology with GeometryType=XY. The polyvertex one displays correc…

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## [Modification of the blinking apply button/pipeline letters' format behavior](https://discourse.paraview.org/t/modification-of-the-blinking-apply-button-pipeline-letters-format-behavior/9518)

<div class="topic-metadata">

**Author:** [@Kostas\_Politis](https://discourse.paraview.org/u/Kostas_Politis)\
**Replies:** 1\
**Last updated:** [April 26, 2022, 2:25pm UTC](https://discourse.paraview.org/t/modification-of-the-blinking-apply-button-pipeline-letters-format-behavior/9518 "2022-04-26T14:25:39Z")

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Hello, Is there any simple way of modifying/removing the blinking behavior of the apply button (the properties panel) and the item of the pipeline browser whose letter format get’s modified (from bold to not bold) when …

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## [Load State Problem with a Plugin extending vtkXdmfReader](https://discourse.paraview.org/t/load-state-problem-with-a-plugin-extending-vtkxdmfreader/9517)

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**Author:** [@Kostas\_Politis](https://discourse.paraview.org/u/Kostas_Politis)\
**Replies:** 0\
**Last updated:** [April 26, 2022, 2:07pm UTC](https://discourse.paraview.org/t/load-state-problem-with-a-plugin-extending-vtkxdmfreader/9517 "2022-04-26T14:07:51Z")

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Hello all, I have extended vtk’s xdmf reader (vtkXdmfReader) to read some custom information from a xdmf file. The information read corresponds to some (double) values that the plugin’s user can modify by PV’s GUI. To t…

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