# Development

**URL:** https://discourse.paraview.org/c/development/6.md?no_subcategories=false&page=24

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

**Page:** 25

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## [PARAVIEW\_DATA\_EXCLUDE\_FROM\_ALL not working ?](https://discourse.paraview.org/t/paraview-data-exclude-from-all-not-working/271)

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**Author:** [@michal.wozniak](https://discourse.paraview.org/u/michal.wozniak)\
**Replies:** 4\
**Last updated:** [November 12, 2020, 2:09pm UTC](https://discourse.paraview.org/t/paraview-data-exclude-from-all-not-working/271 "2020-11-12T14:09:29Z")

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Hi, Is there a way to disable the download step ? Since we are using a vtk 8.0.1, we are now getting “HTTP response code said error” errors during the ExternalData downloading step. I have set these two variables but …

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## [XMLImageDataReader keeps re-executing with a static dataset when playing keyframes animation](https://discourse.paraview.org/t/xmlimagedatareader-keeps-re-executing-with-a-static-dataset-when-playing-keyframes-animation/5692)

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**Author:** [@jfavre](https://discourse.paraview.org/u/jfavre)\
**Replies:** 2\
**Last updated:** [November 6, 2020, 10:11am UTC](https://discourse.paraview.org/t/xmlimagedatareader-keeps-re-executing-with-a-static-dataset-when-playing-keyframes-animation/5692 "2020-11-06T10:11:42Z")

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I have a benchmark reading a single \*vti file, creating 4 camera keyframes, and simply playing the Animation. There is nothing else in my visualization pipeline . Using ParaView 5.8, it reads the file a single time, and …

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## [Please run GitLab-ci Pipelines manually on new merge requests](https://discourse.paraview.org/t/please-run-gitlab-ci-pipelines-manually-on-new-merge-requests/5606)

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**Author:** [@cory.quammen](https://discourse.paraview.org/u/cory.quammen)\
**Replies:** 6\
**Last updated:** [November 5, 2020, 1:42pm UTC](https://discourse.paraview.org/t/please-run-gitlab-ci-pipelines-manually-on-new-merge-requests/5606 "2020-11-05T13:42:25Z")

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As we transition from the buildbot dashboard system to GitLab continuous integration (gitlab-ci), there are some new things that need to be done to test new merge requests. After running Do: test, you will also need to s…

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## [Custom Reader Plugin](https://discourse.paraview.org/t/custom-reader-plugin/5685)

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**Author:** [@richti83](https://discourse.paraview.org/u/richti83)\
**Replies:** 3\
**Last updated:** [October 30, 2020, 5:16pm UTC](https://discourse.paraview.org/t/custom-reader-plugin/5685 "2020-10-30T17:16:58Z")

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Hello, I developed a reader plugin for lammps/liggghts dump files years ago. I reworked it for the new PV 5.8.1 module structure as shown in the doxygen documentation \[1\] and it works as expected with the self-compiled …

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## [Logic of the Colors attribute](https://discourse.paraview.org/t/logic-of-the-colors-attribute/5669)

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**Author:** [@cobo](https://discourse.paraview.org/u/cobo)\
**Replies:** 6\
**Last updated:** [October 28, 2020, 3:32pm UTC](https://discourse.paraview.org/t/logic-of-the-colors-attribute/5669 "2020-10-28T15:32:35Z")

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Recently I learned that it is possible to add a Colors attribute to an object if you want so assign fixed color values to points or cells. It is a 4-component double type array, with values between 0 and 255, representin…

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## [Superbuild : Paraview OpenGL UI application](https://discourse.paraview.org/t/superbuild-paraview-opengl-ui-application/5658)

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**Author:** [@Nicholas\_Yue](https://discourse.paraview.org/u/Nicholas_Yue)\
**Replies:** 6\
**Last updated:** [October 28, 2020, 9:14am UTC](https://discourse.paraview.org/t/superbuild-paraview-opengl-ui-application/5658 "2020-10-28T09:14:20Z")

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Hi, I am trying to build Paraview (with OpenGL) on an Ubuntu 18.04 box with Nvidia card (and Nvidia drivers) What option (or combination of options) should I enable in superbuild to build the Paraview executable with t…

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## [Connecting array property from custom widget to custom filter](https://discourse.paraview.org/t/connecting-array-property-from-custom-widget-to-custom-filter/5668)

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**Author:** [@coreylee](https://discourse.paraview.org/u/coreylee)\
**Replies:** 0\
**Last updated:** [October 27, 2020, 11:27pm UTC](https://discourse.paraview.org/t/connecting-array-property-from-custom-widget-to-custom-filter/5668 "2020-10-27T23:27:33Z")

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Hi everyone, I am quite close to having an interesting plugin working but I am getting stuck at the interface of widgets and plugins. I have a custom widget that is heavily based on the vtkPolyLineWidget/Representation…

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## [ParaView Time Refactoring](https://discourse.paraview.org/t/paraview-time-refactoring/5506)

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**Author:** [@nicolas.vuaille](https://discourse.paraview.org/u/nicolas.vuaille)\
**Replies:** 20\
**Last updated:** [October 27, 2020, 6:22pm UTC](https://discourse.paraview.org/t/paraview-time-refactoring/5506 "2020-10-27T18:22:27Z")

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This thread is intended to continue the discussion started here Paraview Animation Proposal, about the time support in ParaView. TLDR; Using time can be very confusing for some user, specially when using animation. For…

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## [Plugin with properties to be remembered](https://discourse.paraview.org/t/plugin-with-properties-to-be-remembered/5660)

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**Author:** [@cobo](https://discourse.paraview.org/u/cobo)\
**Replies:** 3\
**Last updated:** [October 27, 2020, 10:53am UTC](https://discourse.paraview.org/t/plugin-with-properties-to-be-remembered/5660 "2020-10-27T10:53:24Z")

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With this XML I can specify a file name attribute for a plugin: \<StringVectorProperty name="AttributesFile" label="Attributes File" command="SetAttributesFile" number\_of\_elements="1"\> \<File…

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## [Assign attributes to the blocks of a vtkMultiBlockDataSet](https://discourse.paraview.org/t/assign-attributes-to-the-blocks-of-a-vtkmultiblockdataset/5565)

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**Author:** [@cobo](https://discourse.paraview.org/u/cobo)\
**Replies:** 6\
**Last updated:** [October 20, 2020, 6:50am UTC](https://discourse.paraview.org/t/assign-attributes-to-the-blocks-of-a-vtkmultiblockdataset/5565 "2020-10-20T06:50:01Z")

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I know that we have PointData with attributes, CellData with attributes and FieldData, but I am not aware of anything like BlockData: This would be the thing that I would actually like to use if possible! But maybe ther…

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## [Adding a custom 3D Widget to a ParaView plugin](https://discourse.paraview.org/t/adding-a-custom-3d-widget-to-a-paraview-plugin/4647)

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**Author:** [@coreylee](https://discourse.paraview.org/u/coreylee)\
**Replies:** 3\
**Last updated:** [October 19, 2020, 9:50pm UTC](https://discourse.paraview.org/t/adding-a-custom-3d-widget-to-a-paraview-plugin/4647 "2020-10-19T21:50:08Z")

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Hello, I am working on a project where I need an interactive widget in a custom plugin within ParaView. My plugin is C++ based (built with CMake) and will be loaded into ParaView (built from source). The end goal here i…

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## [Customizing the default automatic View placement within a Layout](https://discourse.paraview.org/t/customizing-the-default-automatic-view-placement-within-a-layout/5571)

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**Author:** [@jacob](https://discourse.paraview.org/u/jacob)\
**Replies:** 3\
**Last updated:** [October 16, 2020, 2:05pm UTC](https://discourse.paraview.org/t/customizing-the-default-automatic-view-placement-within-a-layout/5571 "2020-10-16T14:05:31Z")

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I am developing a filter with many output ports. When Applying for the first time, a View is created for each of the output ports. The association of output ports with specific Views and their arrangement within a Layou…

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## [Linking ParaView modules into plugins](https://discourse.paraview.org/t/linking-paraview-modules-into-plugins/5553)

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**Author:** [@coreylee](https://discourse.paraview.org/u/coreylee)\
**Replies:** 1\
**Last updated:** [October 13, 2020, 12:39pm UTC](https://discourse.paraview.org/t/linking-paraview-modules-into-plugins/5553 "2020-10-13T12:39:51Z")

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Hello! I am waist deep in plugin development right now and I came across a behavior in ParaView plugin building that I’m not super clear on. I have an example plugin where I have taken the /Examples/Plugins/PropertyWidg…

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## [ParaView 5.8.1 crashing while importing 'Tensorflow'](https://discourse.paraview.org/t/paraview-5-8-1-crashing-while-importing-tensorflow/5549)

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**Author:** [@muchu](https://discourse.paraview.org/u/muchu)\
**Replies:** 0\
**Last updated:** [October 12, 2020, 2:48pm UTC](https://discourse.paraview.org/t/paraview-5-8-1-crashing-while-importing-tensorflow/5549 "2020-10-12T14:48:57Z")

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Hello, I am using Paraview to build a filter plugin for my university research project. I built Paraview 5.8.1 from \[source\] (ParaView/Documentation/dev/build.md at master · Kitware/ParaView · GitHub) which has Python …

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## [Create Source manually](https://discourse.paraview.org/t/create-source-manually/5540)

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**Author:** [@ada](https://discourse.paraview.org/u/ada)\
**Replies:** 0\
**Last updated:** [October 9, 2020, 10:18am UTC](https://discourse.paraview.org/t/create-source-manually/5540 "2020-10-09T10:18:33Z")

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I am a newer for paraview,I have use the vtk for several years,but when i start the paraview ,i found i can’t create the actor and add it to the renderview,i viewed the source code for SLAC plugin,but find it just use t…

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## [CMake Error at superbuild/cmake/SuperbuildMacros.cmake building ParaView](https://discourse.paraview.org/t/cmake-error-at-superbuild-cmake-superbuildmacros-cmake-building-paraview/3016)

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**Author:** [@maria\_vlas](https://discourse.paraview.org/u/maria_vlas)\
**Replies:** 3\
**Last updated:** [November 21, 2019, 9:57pm UTC](https://discourse.paraview.org/t/cmake-error-at-superbuild-cmake-superbuildmacros-cmake-building-paraview/3016 "2019-11-21T21:57:38Z")

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I’m trying to build ParaView in MacOS. I went to the repository https://gitlab.kitware.com/paraview/paraview/tree/master which lead me to build paraview-superbuild \`https://gitlab.kitware.com/paraview/paraview-superbuil…

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## [view time inspector is awkward](https://discourse.paraview.org/t/view-time-inspector-is-awkward/5523)

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**Author:** [@wascott](https://discourse.paraview.org/u/wascott)\
**Replies:** 5\
**Last updated:** [October 8, 2020, 5:27pm UTC](https://discourse.paraview.org/t/view-time-inspector-is-awkward/5523 "2020-10-08T17:27:08Z")

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I just looked at the view/ time inspector. This is a horribly awkward view. It is a very wide, short view. It should not be to the side of the rendering window, but below it. If there are other views, such as Animati…

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## [Feature Request: Add Opacity Option to Edge Styling](https://discourse.paraview.org/t/feature-request-add-opacity-option-to-edge-styling/5520)

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**Author:** [@mconti](https://discourse.paraview.org/u/mconti)\
**Replies:** 2\
**Last updated:** [October 7, 2020, 6:53pm UTC](https://discourse.paraview.org/t/feature-request-add-opacity-option-to-edge-styling/5520 "2020-10-07T18:53:11Z")

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Right now if you load an solid model with a mesh, and render it with the “surface with edges” option the mesh lines will be shown. I doubt many people use this option for high quality renders, but it is great for testin…

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## [Automatically Save State and Disconnect from Server before Server Timeout](https://discourse.paraview.org/t/automatically-save-state-and-disconnect-from-server-before-server-timeout/5510)

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**Author:** [@deankevin](https://discourse.paraview.org/u/deankevin)\
**Replies:** 3\
**Last updated:** [October 7, 2020, 5:00pm UTC](https://discourse.paraview.org/t/automatically-save-state-and-disconnect-from-server-before-server-timeout/5510 "2020-10-07T17:00:03Z")

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Hello All, my name is Kevin. I have been working with the High Performance Computing and Modernization Program and have an issue I would like to ask about. Would it be a good idea to support automatic state saving upon …

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## [PropertyWidgetDecorator based on the type of input](https://discourse.paraview.org/t/propertywidgetdecorator-based-on-the-type-of-input/5166)

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**Author:** [@SimonFuet](https://discourse.paraview.org/u/SimonFuet)\
**Replies:** 2\
**Last updated:** [October 6, 2020, 8:13am UTC](https://discourse.paraview.org/t/propertywidgetdecorator-based-on-the-type-of-input/5166 "2020-10-06T08:13:00Z")

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Hi all, Is it possible in a filter XML desciption to add a PropertyWidgetDecorator that depends on the type of input ? My filter can be used with any type of data set, but for vtkUnstructuredGrids, I have a few extra p…

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## [How to incorporate input field values in ProgrammableFilter plugin](https://discourse.paraview.org/t/how-to-incorporate-input-field-values-in-programmablefilter-plugin/5489)

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**Author:** [@Mohamed\_Abdelkhalek](https://discourse.paraview.org/u/Mohamed_Abdelkhalek)\
**Replies:** 1\
**Last updated:** [October 6, 2020, 3:38am UTC](https://discourse.paraview.org/t/how-to-incorporate-input-field-values-in-programmablefilter-plugin/5489 "2020-10-06T03:38:09Z")

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Hello, I am working on the filter example in PluginsExamples from paraview.util.vtkAlgorithm import \* ------------------------------------------------------------------------------ A filter example. -----------------…

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## [Updating required Python minimum version to 3.6](https://discourse.paraview.org/t/updating-required-python-minimum-version-to-3-6/5448)

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**Author:** [@utkarsh.ayachit](https://discourse.paraview.org/u/utkarsh.ayachit)\
**Replies:** 1\
**Last updated:** [October 5, 2020, 4:44pm UTC](https://discourse.paraview.org/t/updating-required-python-minimum-version-to-3-6/5448 "2020-10-05T16:44:43Z")

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Python 3.5 and earlier are now EOL. Should we update ParaView’s minimum required Python version to 3.6?

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## [Paraview hangs (and hangs all open Terminals) on MacOSX (High SIerra) with remote-connect](https://discourse.paraview.org/t/paraview-hangs-and-hangs-all-open-terminals-on-macosx-high-sierra-with-remote-connect/5376)

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**Author:** [@pancha](https://discourse.paraview.org/u/pancha)\
**Replies:** 2\
**Last updated:** [September 18, 2020, 3:04pm UTC](https://discourse.paraview.org/t/paraview-hangs-and-hangs-all-open-terminals-on-macosx-high-sierra-with-remote-connect/5376 "2020-09-18T15:04:20Z")

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Hi, When I open and link paraview to an external server (RHEA@OLCF in my case), it pops a terminal asking for a passwd, as it should, but immediately hangs (MacOSX complains that ‘application not responding’), so I cann…

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## [How can I extract the Cp distribution plot around an airfoil from a VTK file using Paraview?](https://discourse.paraview.org/t/how-can-i-extract-the-cp-distribution-plot-around-an-airfoil-from-a-vtk-file-using-paraview/5052)

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**Author:** [@Victor](https://discourse.paraview.org/u/Victor)\
**Replies:** 13\
**Last updated:** [September 17, 2020, 8:44am UTC](https://discourse.paraview.org/t/how-can-i-extract-the-cp-distribution-plot-around-an-airfoil-from-a-vtk-file-using-paraview/5052 "2020-09-17T08:44:04Z")

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I have seen in other discussion pages that they can do it extracting the block or selecting the surfaces of the airfoil. However, in my VTK file I do not have those. I only have the fluid domain around the airfoil. Does …

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## [ParaViewData-v5.8.1 tar file](https://discourse.paraview.org/t/paraviewdata-v5-8-1-tar-file/5322)

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**Author:** [@fissell](https://discourse.paraview.org/u/fissell)\
**Replies:** 3\
**Last updated:** [September 15, 2020, 5:41pm UTC](https://discourse.paraview.org/t/paraviewdata-v5-8-1-tar-file/5322 "2020-09-15T17:41:27Z")

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Hi, Is there a ParaViewData-v5.8.1 tar file available for download somewhere ? I only see the 5.8.0 version. thanks, Kate

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## [Show() in Python script triggers new Reader Object](https://discourse.paraview.org/t/show-in-python-script-triggers-new-reader-object/5235)

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**Author:** [@stefan\_m](https://discourse.paraview.org/u/stefan_m)\
**Replies:** 1\
**Last updated:** [September 15, 2020, 3:39pm UTC](https://discourse.paraview.org/t/show-in-python-script-triggers-new-reader-object/5235 "2020-09-15T15:39:14Z")

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Hi there, we develop our own Reader Plugin that can directly read in our compressed files into the ParaView workflow (pvpython from ParaView Prebuild Version 5.8.0; our plugin compiled with ParaView SuperBuild 5.8.0). …

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## [no python in ParaView 5.6.0](https://discourse.paraview.org/t/no-python-in-paraview-5-6-0/1992)

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**Author:** [@bencesomogyi](https://discourse.paraview.org/u/bencesomogyi)\
**Replies:** 1\
**Last updated:** [September 15, 2020, 2:14pm UTC](https://discourse.paraview.org/t/no-python-in-paraview-5-6-0/1992 "2020-09-15T14:14:53Z")

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Dear All, I have the problem, that the python console, programmable filter is not working in ParaView-5.6.0-MPI-Windows-msvc2015-64bit, ParaView-5.6.0-Windows-msvc2015-64bit, that I have downloaded from the ParaView web…

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## [Question about best cmake versions to use with ParaView 5.7.0-RC1](https://discourse.paraview.org/t/question-about-best-cmake-versions-to-use-with-paraview-5-7-0-rc1/2194)

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**Author:** [@joeh](https://discourse.paraview.org/u/joeh)\
**Replies:** 12\
**Last updated:** [March 21, 2020, 6:24am UTC](https://discourse.paraview.org/t/question-about-best-cmake-versions-to-use-with-paraview-5-7-0-rc1/2194 "2020-03-21T06:24:49Z")

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When building ParaView 5.7.0-RC1 with cmake 3.11.4, I have found that the FindMPI module is not properly finding the MPI version on our Centennial super-computer. Is there a recommended version of cmake to use with P…

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## [Issue compiling custom reader plugin with accompanying VTK reader](https://discourse.paraview.org/t/issue-compiling-custom-reader-plugin-with-accompanying-vtk-reader/5286)

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**Author:** [@mdjong](https://discourse.paraview.org/u/mdjong)\
**Replies:** 5\
**Last updated:** [September 7, 2020, 6:19pm UTC](https://discourse.paraview.org/t/issue-compiling-custom-reader-plugin-with-accompanying-vtk-reader/5286 "2020-09-07T18:19:28Z")

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Hey guys, I’m currently trying to create a reader for the JSON based CityJSON format (mix of CityGML and GeoJSON (www.cityjson.org)). As far as I understand I will need to create a new VTK reader to accompany the ParaV…

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## [Node-centered Boxlib data](https://discourse.paraview.org/t/node-centered-boxlib-data/5274)

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**Author:** [@brunnels](https://discourse.paraview.org/u/brunnels)\
**Replies:** 0\
**Last updated:** [September 4, 2020, 5:29pm UTC](https://discourse.paraview.org/t/node-centered-boxlib-data/5274 "2020-09-04T17:29:26Z")

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Paraview does not appear to identify node-centered boxlib data as a “point array” but as a “cell array”. Instructions to reproduce: Check out amrex from https://github.com/AMReX-Codes/amrex Compile Tutorials/LinearSol…

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