# Development

**URL:** https://discourse.paraview.org/c/development/6.md?no_subcategories=false&page=7

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

**Page:** 8

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## [Implementation of the triangulation algorithm](https://discourse.paraview.org/t/implementation-of-the-triangulation-algorithm/14790)

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**Author:** [@Reptider](https://discourse.paraview.org/u/Reptider)\
**Replies:** 1\
**Last updated:** [June 6, 2024, 6:34pm UTC](https://discourse.paraview.org/t/implementation-of-the-triangulation-algorithm/14790 "2024-06-06T18:34:47Z")

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Hi. I would like to know where is the code describing the implementation of the Triangulate method, which is imported together with paraview.simple. On this path: https://kitware.github.io/paraview-docs/latest/python/\_…

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## [DSP plugin - Paraview crashes when using Temporal multiplexing on Windows 10](https://discourse.paraview.org/t/dsp-plugin-paraview-crashes-when-using-temporal-multiplexing-on-windows-10/14656)

<div class="topic-metadata">

**Author:** [@Olafur\_Marteinsson](https://discourse.paraview.org/u/Olafur_Marteinsson)\
**Replies:** 4\
**Last updated:** [June 5, 2024, 7:33pm UTC](https://discourse.paraview.org/t/dsp-plugin-paraview-crashes-when-using-temporal-multiplexing-on-windows-10/14656 "2024-06-05T19:33:09Z")

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Paraview crashes when using the Temporal multiplexing filter on Windows 10 but works just fine with the same dataset on MacOS 12.7.3. Has anybody encountered the same issue?

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## [Replacement Shaders](https://discourse.paraview.org/t/replacement-shaders/14782)

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**Author:** [@shawn](https://discourse.paraview.org/u/shawn)\
**Replies:** 0\
**Last updated:** [June 5, 2024, 5:16pm UTC](https://discourse.paraview.org/t/replacement-shaders/14782 "2024-06-05T17:16:33Z")

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Hey all, I am currently trying to develop some replacement shaders for Paraview, I know that there is a replacement shaders tab but I am trying to understand that when replacing shaders, how to find the original shader …

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## [Proposal: Workspaces for managing ParaView states](https://discourse.paraview.org/t/proposal-workspaces-for-managing-paraview-states/14720)

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**Author:** [@utkarsh.ayachit](https://discourse.paraview.org/u/utkarsh.ayachit)\
**Replies:** 8\
**Last updated:** [May 30, 2024, 2:52am UTC](https://discourse.paraview.org/t/proposal-workspaces-for-managing-paraview-states/14720 "2024-05-30T02:52:33Z")

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I recently had the opportunity to use ParaView for setting up a CFD visualization: exploring what works, what doesn’t and deciding how to generate the best possible visuals (ParaView is brilliant, btw!). Here’s a propos…

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## [Improving quick launch window](https://discourse.paraview.org/t/improving-quick-launch-window/14336)

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**Author:** [@nicolas.vuaille](https://discourse.paraview.org/u/nicolas.vuaille)\
**Replies:** 14\
**Last updated:** [May 27, 2024, 10:20am UTC](https://discourse.paraview.org/t/improving-quick-launch-window/14336 "2024-05-27T10:20:59Z")

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To add filters (or sources or extractors), one can use the dedicated menu. But it is also possible to use the “Quick Launch” window (ctr+space). Then typing some text will display the matching filter labels. Pressing en…

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## [Bug: Rotation of large representation with most blocks hidden still centers around middle of full representation.](https://discourse.paraview.org/t/bug-rotation-of-large-representation-with-most-blocks-hidden-still-centers-around-middle-of-full-representation/14708)

<div class="topic-metadata">

**Author:** [@TaterTot](https://discourse.paraview.org/u/TaterTot)\
**Replies:** 1\
**Last updated:** [May 24, 2024, 6:13pm UTC](https://discourse.paraview.org/t/bug-rotation-of-large-representation-with-most-blocks-hidden-still-centers-around-middle-of-full-representation/14708 "2024-05-24T18:13:50Z")

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As you can see in the picture attached when you rotate with only one block visible it still uses the center of the full representation. I think it would work better if the center was dynamically set to the center of all …

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## [How to make a selection of spheres of another size than default?](https://discourse.paraview.org/t/how-to-make-a-selection-of-spheres-of-another-size-than-default/14654)

<div class="topic-metadata">

**Author:** [@joint](https://discourse.paraview.org/u/joint)\
**Replies:** 1\
**Last updated:** [May 21, 2024, 7:41am UTC](https://discourse.paraview.org/t/how-to-make-a-selection-of-spheres-of-another-size-than-default/14654 "2024-05-21T07:41:34Z")

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Hello dear Paraview developers! Could you please explain how to make a selection of points which would look like visible spheres, not small points? Best regards, Mike A.

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## [How to make a selection of another colour?](https://discourse.paraview.org/t/how-to-make-a-selection-of-another-colour/14651)

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**Author:** [@joint](https://discourse.paraview.org/u/joint)\
**Replies:** 6\
**Last updated:** [May 21, 2024, 6:09am UTC](https://discourse.paraview.org/t/how-to-make-a-selection-of-another-colour/14651 "2024-05-21T06:09:01Z")

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Hello dear Paraview developers! Now I know how to make a standard paraview selection of purple colour But how to make a selection which would look differently sized or coloured? Best Regards, Mike A.

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## [PV5.12 XMF2 Reader Array Issue](https://discourse.paraview.org/t/pv5-12-xmf2-reader-array-issue/14646)

<div class="topic-metadata">

**Author:** [@theodorebaltis](https://discourse.paraview.org/u/theodorebaltis)\
**Replies:** 1\
**Last updated:** [May 17, 2024, 7:13am UTC](https://discourse.paraview.org/t/pv5-12-xmf2-reader-array-issue/14646 "2024-05-17T07:13:56Z")

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Looks like a bug with the XMF2 reader in ParaView 5.12 Load a dataset, turn off all point/cell arrays, and hit ‘apply’. Then look at the coloring options and all of the arrays are still available (and display correctly …

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## [Adding polyData block from vtp elements to vtkMultiBlockDataSet](https://discourse.paraview.org/t/adding-polydata-block-from-vtp-elements-to-vtkmultiblockdataset/14621)

<div class="topic-metadata">

**Author:** [@Reptider](https://discourse.paraview.org/u/Reptider)\
**Replies:** 1\
**Last updated:** [May 16, 2024, 8:21am UTC](https://discourse.paraview.org/t/adding-polydata-block-from-vtp-elements-to-vtkmultiblockdataset/14621 "2024-05-16T08:21:05Z")

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Hello. I am using python with the vtk library. I need to add to vtkMultiBlockDataSet a block consisting of at least one separate polyData (vtp) element. And then I want to write the result using the vtkXMLMultiBlockDataW…

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## [Default representation and color maps for python programmable/algorithm filters?](https://discourse.paraview.org/t/default-representation-and-color-maps-for-python-programmable-algorithm-filters/14618)

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**Author:** [@pvengineer](https://discourse.paraview.org/u/pvengineer)\
**Replies:** 3\
**Last updated:** [May 14, 2024, 12:43pm UTC](https://discourse.paraview.org/t/default-representation-and-color-maps-for-python-programmable-algorithm-filters/14618 "2024-05-14T12:43:21Z")

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First time poster here… I am a relatively new user to paraview and vtk, and an intermediate python programmer. I wanted to mention that I in case I start asking some ill posed questions. I am working on developing a few…

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## [How to install Qt 5.15.3? Only have access to 5.15.2 in Qt maintenance tool](https://discourse.paraview.org/t/how-to-install-qt-5-15-3-only-have-access-to-5-15-2-in-qt-maintenance-tool/14544)

<div class="topic-metadata">

**Author:** [@TaterTot](https://discourse.paraview.org/u/TaterTot)\
**Replies:** 1\
**Last updated:** [May 2, 2024, 7:42pm UTC](https://discourse.paraview.org/t/how-to-install-qt-5-15-3-only-have-access-to-5-15-2-in-qt-maintenance-tool/14544 "2024-05-02T19:42:15Z")

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You can see my picture attached that I only have access to 5.15.2 would this work? If not how do I install 5.15.3

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## [ParaView compilation and CMake versions](https://discourse.paraview.org/t/paraview-compilation-and-cmake-versions/14513)

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**Author:** [@cobo](https://discourse.paraview.org/u/cobo)\
**Replies:** 5\
**Last updated:** [April 29, 2024, 9:33pm UTC](https://discourse.paraview.org/t/paraview-compilation-and-cmake-versions/14513 "2024-04-29T21:33:43Z")

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Compiling my current ParaView custom application with PV 5.12.0 ends up with tons of warning messages about Policy CMP0116 is not set. I can see what this policy is about - and now I should know what the ParaView build a…

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## [Edge selection](https://discourse.paraview.org/t/edge-selection/14456)

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**Author:** [@joint](https://discourse.paraview.org/u/joint)\
**Replies:** 4\
**Last updated:** [April 22, 2024, 12:55pm UTC](https://discourse.paraview.org/t/edge-selection/14456 "2024-04-22T12:55:23Z")

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Hello dear ParaView developers! Could you please explain how to select edges of cells in paraview? Thanks! Best regards

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## [ParaView translation discussion](https://discourse.paraview.org/t/paraview-translation-discussion/2223)

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**Author:** [@mwestphal](https://discourse.paraview.org/u/mwestphal)\
**Replies:** 5\
**Last updated:** [April 22, 2024, 7:43am UTC](https://discourse.paraview.org/t/paraview-translation-discussion/2223 "2024-04-22T07:43:09Z")

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Is there interest into improving the support for translation in ParaView ? I’m currently adding a support for translation in a ParaView based app and there is a lot of non tr() visible QString in ParaView. Some doc for…

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## [ParaView Internationalization](https://discourse.paraview.org/t/paraview-internationalization/10399)

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**Author:** [@Nicolas\_Boganski](https://discourse.paraview.org/u/Nicolas_Boganski)\
**Replies:** 12\
**Last updated:** [April 22, 2024, 7:42am UTC](https://discourse.paraview.org/t/paraview-internationalization/10399 "2024-04-22T07:42:48Z")

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Hello everyone, I am currently working on making the ParaView UI translatable. As such, this thread is meant to be a progress update and a forum for your advice! Objectives The scope of this internationalization is to …

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## [Filters Renaming and Categories Update](https://discourse.paraview.org/t/filters-renaming-and-categories-update/13870)

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**Author:** [@nicolas.vuaille](https://discourse.paraview.org/u/nicolas.vuaille)\
**Replies:** 22\
**Last updated:** [April 19, 2024, 1:45pm UTC](https://discourse.paraview.org/t/filters-renaming-and-categories-update/13870 "2024-04-19T13:45:38Z")

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Goal Make it easier to discover the filters and to choose the correct one in the GUI and in python. Thus the following is about the proxy labels, not names, even if we may use the term “name” for simplicity. Constraint…

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## [path tracer rendering bug with low opacity overlapping objects?](https://discourse.paraview.org/t/path-tracer-rendering-bug-with-low-opacity-overlapping-objects/14279)

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**Author:** [@pgges24](https://discourse.paraview.org/u/pgges24)\
**Replies:** 5\
**Last updated:** [April 19, 2024, 12:00pm UTC](https://discourse.paraview.org/t/path-tracer-rendering-bug-with-low-opacity-overlapping-objects/14279 "2024-04-19T12:00:45Z")

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Hi, I found some strange image artifacts when using the pathtracing render mode together with many overlapping objects at low opacity. Could this be some bug on the paraview side or is this a general ospray issue? I in…

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## [Composite material visualizations](https://discourse.paraview.org/t/composite-material-visualizations/13807)

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**Author:** [@dcthomp](https://discourse.paraview.org/u/dcthomp)\
**Replies:** 9\
**Last updated:** [April 17, 2024, 12:26pm UTC](https://discourse.paraview.org/t/composite-material-visualizations/13807 "2024-04-17T12:26:52Z")

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Hi all, @spyridon97 and I are starting to work on support for visualizations of layered composite materials (such as carbon fiber in a resin matrix) modeled as shell elements with additional information about fiber orie…

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## [Could anybody give an example on usage PropertyLinks?](https://discourse.paraview.org/t/could-anybody-give-an-example-on-usage-propertylinks/14375)

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**Author:** [@joint](https://discourse.paraview.org/u/joint)\
**Replies:** 1\
**Last updated:** [April 17, 2024, 10:28am UTC](https://discourse.paraview.org/t/could-anybody-give-an-example-on-usage-propertylinks/14375 "2024-04-17T10:28:00Z")

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Hello! I ve come across a really confusing subject, property link this-\>addPropertyLink(widget, “value”, SIGNAL(valueChanged(int)), ivp); Could anyone please explain how to use those? Thanks!

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## [Cannot link with custom widget](https://discourse.paraview.org/t/cannot-link-with-custom-widget/14373)

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**Author:** [@joint](https://discourse.paraview.org/u/joint)\
**Replies:** 1\
**Last updated:** [April 17, 2024, 9:12am UTC](https://discourse.paraview.org/t/cannot-link-with-custom-widget/14373 "2024-04-17T09:12:28Z")

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Hello dear Paraview developers! I have added my custom widget to Qt/ApplicationComponents Then I tried to edit cmake in my plugin: include\_directories(${CMAKE\_CURRENT\_SOURCE\_DIR}/../../Qt/ApplicationComponents) includ…

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## [Paraview cannot read cell arrays containing colon in the name of the field](https://discourse.paraview.org/t/paraview-cannot-read-cell-arrays-containing-colon-in-the-name-of-the-field/14341)

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**Author:** [@marhatom](https://discourse.paraview.org/u/marhatom)\
**Replies:** 3\
**Last updated:** [April 16, 2024, 6:21pm UTC](https://discourse.paraview.org/t/paraview-cannot-read-cell-arrays-containing-colon-in-the-name-of-the-field/14341 "2024-04-16T18:21:14Z")

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OpenFOAM sometimes uses name prefixes of the function object infront of the outputed field, like this functionObject:field Paraview is then completely oblivious to these fields. Weird things is, it only happens on Win…

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## [What is subproxy?](https://discourse.paraview.org/t/what-is-subproxy/14313)

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**Author:** [@joint](https://discourse.paraview.org/u/joint)\
**Replies:** 5\
**Last updated:** [April 3, 2024, 7:24am UTC](https://discourse.paraview.org/t/what-is-subproxy/14313 "2024-04-03T07:24:27Z")

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Hello ParaView developers! Could one please clarify when I should use SubProxy and not property and give an example? Thank you very much!

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## [How to force source proxy update all of its subproxies?](https://discourse.paraview.org/t/how-to-force-source-proxy-update-all-of-its-subproxies/14317)

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**Author:** [@joint](https://discourse.paraview.org/u/joint)\
**Replies:** 1\
**Last updated:** [April 3, 2024, 7:22am UTC](https://discourse.paraview.org/t/how-to-force-source-proxy-update-all-of-its-subproxies/14317 "2024-04-03T07:22:17Z")

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Hello dear Paraview developers! Could you please explain how to force updating the source proxy’s subproxies? I have a filter, which does what I need, and has some filters as subproxies, but it does not show me what is…

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## [XML: Proxy command?](https://discourse.paraview.org/t/xml-proxy-command/14321)

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**Author:** [@joint](https://discourse.paraview.org/u/joint)\
**Replies:** 1\
**Last updated:** [April 2, 2024, 4:19pm UTC](https://discourse.paraview.org/t/xml-proxy-command/14321 "2024-04-02T16:19:41Z")

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Hello! What does “command” in proxy mean? Is it what is executed when proxy is creater or updated or what? Thanks

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## [Should one call Modified or MarkDirty on plugin?](https://discourse.paraview.org/t/should-one-call-modified-or-markdirty-on-plugin/14318)

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**Author:** [@joint](https://discourse.paraview.org/u/joint)\
**Replies:** 2\
**Last updated:** [April 2, 2024, 2:25pm UTC](https://discourse.paraview.org/t/should-one-call-modified-or-markdirty-on-plugin/14318 "2024-04-02T14:25:56Z")

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Should one call Modified or MarkDirty on plugin in order to force further pipeline updates?

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## [When time is changed, how is it passed to filters?](https://discourse.paraview.org/t/when-time-is-changed-how-is-it-passed-to-filters/14319)

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**Author:** [@joint](https://discourse.paraview.org/u/joint)\
**Replies:** 1\
**Last updated:** [April 2, 2024, 1:58pm UTC](https://discourse.paraview.org/t/when-time-is-changed-how-is-it-passed-to-filters/14319 "2024-04-02T13:58:30Z")

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Hello! I have a dataset of several frames, what exactly happens when I switch from one frame to another? Is time a property? Thanks!

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## [What for ExposedProperties and LinkProperties are needed?](https://discourse.paraview.org/t/what-for-exposedproperties-and-linkproperties-are-needed/14314)

<div class="topic-metadata">

**Author:** [@joint](https://discourse.paraview.org/u/joint)\
**Replies:** 4\
**Last updated:** [April 2, 2024, 1:44pm UTC](https://discourse.paraview.org/t/what-for-exposedproperties-and-linkproperties-are-needed/14314 "2024-04-02T13:44:32Z")

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Hello! Could you please explain me what for ExposedProperties and LinkProperties are needed? Thank u!

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## [Вычисление распределенных характеристик](https://discourse.paraview.org/t/topic/14315)

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**Author:** [@Michail\_Ferenchuk](https://discourse.paraview.org/u/Michail_Ferenchuk)\
**Replies:** 1\
**Last updated:** [April 2, 2024, 11:33am UTC](https://discourse.paraview.org/t/topic/14315 "2024-04-02T11:33:29Z")

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Help create a filter or script to calculate distributed aerodynamic forces along a streamlined body. I dug up something. This is where my knowledge ends. Here’s what I wrote: trace generated using paraview version 5.11.…

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## [Trouble: activeSourcesSelectionModel() gives no active proxy](https://discourse.paraview.org/t/trouble-activesourcesselectionmodel-gives-no-active-proxy/14309)

<div class="topic-metadata">

**Author:** [@joint](https://discourse.paraview.org/u/joint)\
**Replies:** 1\
**Last updated:** [April 2, 2024, 8:49am UTC](https://discourse.paraview.org/t/trouble-activesourcesselectionmodel-gives-no-active-proxy/14309 "2024-04-02T08:49:28Z")

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Hello dear Paraview developers! I use vtkSMProxy\* proxy = pqActiveObjects::instance().activeSourcesSelectionModel()-\>GetCurrentProxy(); vtkSMSourceProxy\* source\_proxy = vtkSMSourceProxy::SafeDownCast(proxy); to ge…

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