# Development

**URL:** https://discourse.paraview.org/c/development/6.md?no_subcategories=false&page=26

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

**Page:** 27

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## [Can WriteImage/SaveScreentshot API run normally on Linux OS without GUI?](https://discourse.paraview.org/t/can-writeimage-savescreentshot-api-run-normally-on-linux-os-without-gui/4778)

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**Author:** [@Superstarimage](https://discourse.paraview.org/u/Superstarimage)\
**Replies:** 4\
**Last updated:** [July 10, 2020, 4:31am UTC](https://discourse.paraview.org/t/can-writeimage-savescreentshot-api-run-normally-on-linux-os-without-gui/4778 "2020-07-10T04:31:23Z")

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Dear ALL, I meet several errors when run WriteImage/SaveScreentshot API on Linux OS without GUI. I want to hold the picture when rendering job is done. But my work operation system(centos 7.x) doesn’t install GUI. So I …

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## [Standardizing string substitutions](https://discourse.paraview.org/t/standardizing-string-substitutions/4719)

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**Author:** [@utkarsh.ayachit](https://discourse.paraview.org/u/utkarsh.ayachit)\
**Replies:** 10\
**Last updated:** [July 8, 2020, 5:30pm UTC](https://discourse.paraview.org/t/standardizing-string-substitutions/4719 "2020-07-08T17:30:53Z")

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We have several cases in ParaView where strings (or filenames) are substituted by runtime values. e.g. In Chart views, we can use ${TIME} to have it replaced with current view time. In AnnotationTime source, we use %f …

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## [mili support in ParaView 5.8.1-RC1 is broken as it is dependent on missing rapidjson](https://discourse.paraview.org/t/mili-support-in-paraview-5-8-1-rc1-is-broken-as-it-is-dependent-on-missing-rapidjson/4743)

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**Author:** [@joeh](https://discourse.paraview.org/u/joeh)\
**Replies:** 8\
**Last updated:** [July 7, 2020, 2:48pm UTC](https://discourse.paraview.org/t/mili-support-in-paraview-5-8-1-rc1-is-broken-as-it-is-dependent-on-missing-rapidjson/4743 "2020-07-07T14:48:40Z")

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Hi, mili support in ParaView 5.8.1-RC1 is broken as it is dependent on rapidjson which while included at one point in the superbuild (rapidjson-1.1.0.tar.gz) git master is not included in the ParaView 5.8.1-RC1 tag ve…

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## [Running python VTK examples inside paraview](https://discourse.paraview.org/t/running-python-vtk-examples-inside-paraview/4748)

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**Author:** [@Mohamed\_Abdelkhalek](https://discourse.paraview.org/u/Mohamed_Abdelkhalek)\
**Replies:** 3\
**Last updated:** [July 7, 2020, 12:52pm UTC](https://discourse.paraview.org/t/running-python-vtk-examples-inside-paraview/4748 "2020-07-07T12:52:18Z")

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Hello, new member here. I wonder if there is a documented way for running pure VTK examples from within the paraview python console and/or programmable source/filters. For example, something like this. import vtk cone …

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## [SegyReader broken in 5.7, 5.8?](https://discourse.paraview.org/t/segyreader-broken-in-5-7-5-8/4762)

<div class="topic-metadata">

**Author:** [@eroots](https://discourse.paraview.org/u/eroots)\
**Replies:** 5\
**Last updated:** [July 7, 2020, 12:05pm UTC](https://discourse.paraview.org/t/segyreader-broken-in-5-7-5-8/4762 "2020-07-07T12:05:42Z")

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I have been trying to import seismic data in the form of segy files into Paraview, and have run into a potential bug as of release 5.7. In 5.6, the SegyReader works perfectly and loads in the data as expected. However, …

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## [Understanding the VTK format in Paraview](https://discourse.paraview.org/t/understanding-the-vtk-format-in-paraview/4713)

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**Author:** [@JHerron](https://discourse.paraview.org/u/JHerron)\
**Replies:** 8\
**Last updated:** [July 7, 2020, 11:26am UTC](https://discourse.paraview.org/t/understanding-the-vtk-format-in-paraview/4713 "2020-07-07T11:26:32Z")

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Hi guys, it’s my first time posting on this forum so please excuse any faults I might make. I’m currently working on implementing a “flow-induced” fluid-structure interaction model using the immersed boundary method in …

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## [Deprecating multi-client support](https://discourse.paraview.org/t/deprecating-multi-client-support/1439)

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**Author:** [@utkarsh.ayachit](https://discourse.paraview.org/u/utkarsh.ayachit)\
**Replies:** 12\
**Last updated:** [July 3, 2020, 12:48pm UTC](https://discourse.paraview.org/t/deprecating-multi-client-support/1439 "2020-07-03T12:48:33Z")

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ParaView has long supported a rarely used feature, multi-clients – where multiple paraview clients can connect to the same pvserver. While it’s a really neat feature, it’s tedious to maintain and support robustly. I want…

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## [Forcing the View type for a Custom filter](https://discourse.paraview.org/t/forcing-the-view-type-for-a-custom-filter/4742)

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**Author:** [@dwplj](https://discourse.paraview.org/u/dwplj)\
**Replies:** 3\
**Last updated:** [July 3, 2020, 8:11am UTC](https://discourse.paraview.org/t/forcing-the-view-type-for-a-custom-filter/4742 "2020-07-03T08:11:17Z")

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Hello all, I have created a custom filter from the Annotate Time source and exported as XML. I then edited the XML to create a plugin that I can autoload from my plugins directory. When I use it, instead of text rende…

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## [convertIntoMolecule Filter resets Styling parameters](https://discourse.paraview.org/t/convertintomolecule-filter-resets-styling-parameters/4640)

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**Author:** [@christian89](https://discourse.paraview.org/u/christian89)\
**Replies:** 4\
**Last updated:** [July 3, 2020, 7:49am UTC](https://discourse.paraview.org/t/convertintomolecule-filter-resets-styling-parameters/4640 "2020-07-03T07:49:27Z")

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Hey folks, I am using the convertIntoMolecule Filter to render Particles in v.5.8.0. Therefore I set in my macro the Styling parameter AtomicRadiusArrayName=‘my\_array\_name’. But every time the parameter is not accepted…

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## [Backports for ParaView 5.8.1](https://discourse.paraview.org/t/backports-for-paraview-5-8-1/4728)

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**Author:** [@cory.quammen](https://discourse.paraview.org/u/cory.quammen)\
**Replies:** 0\
**Last updated:** [July 1, 2020, 2:44pm UTC](https://discourse.paraview.org/t/backports-for-paraview-5-8-1/4728 "2020-07-01T14:44:11Z")

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If you have merge requests for bug fixes that you think should go in ParaView 5.8.1 and have not been backported yet, please set their milestone to 5.8.1. I will put together a backport MR for these and test them all at …

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## [Some minimum improvement for interactive selection](https://discourse.paraview.org/t/some-minimum-improvement-for-interactive-selection/4679)

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**Author:** [@Richard](https://discourse.paraview.org/u/Richard)\
**Replies:** 6\
**Last updated:** [June 29, 2020, 4:01pm UTC](https://discourse.paraview.org/t/some-minimum-improvement-for-interactive-selection/4679 "2020-06-29T16:01:01Z")

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One change would benefit the usability of interactive selection in Paraview: Maintain any chosen Select (cells/points on, …) button from the top toolbar on the view frame. Any selection I have to make now systematically …

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## [Find data bug fixes and improvement](https://discourse.paraview.org/t/find-data-bug-fixes-and-improvement/4677)

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**Author:** [@Richard](https://discourse.paraview.org/u/Richard)\
**Replies:** 4\
**Last updated:** [June 29, 2020, 7:48am UTC](https://discourse.paraview.org/t/find-data-bug-fixes-and-improvement/4677 "2020-06-29T07:48:05Z")

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Hello I am using Paraview 5.8.0 and I wish the Find Data functionality could be improved. 1- As I mentioned before (https://discourse.paraview.org/t/find-data-weird-behaviour/4482), there is something wrong with Block …

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## [TIFF opening difference between \<=5.7 versions and 5.8](https://discourse.paraview.org/t/tiff-opening-difference-between-5-7-versions-and-5-8/4685)

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**Author:** [@leopessanha](https://discourse.paraview.org/u/leopessanha)\
**Replies:** 3\
**Last updated:** [June 27, 2020, 5:46pm UTC](https://discourse.paraview.org/t/tiff-opening-difference-between-5-7-versions-and-5-8/4685 "2020-06-27T17:46:40Z")

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Hi! Today I had to do a visualization in ParaView, and noticed a difference when opening the same TIFF dataset from opentopography dataset: output\_alos.tif (2.1 MB) Version 5.7 or older with view direction = -Z: Ver…

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## [Locate cell containing a point](https://discourse.paraview.org/t/locate-cell-containing-a-point/4670)

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**Author:** [@SimonFuet](https://discourse.paraview.org/u/SimonFuet)\
**Replies:** 5\
**Last updated:** [June 26, 2020, 6:18am UTC](https://discourse.paraview.org/t/locate-cell-containing-a-point/4670 "2020-06-26T06:18:31Z")

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Hi, This is a duplicate from the VTK discourse. As I didn’t get any answer, I thought it may be more relevant here. Feel free to answer either here or in the VTK discourse, and close the least relevant. I’m trying to l…

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## [VTKPVVTKEXTENSIONSDEFAULT\_EXPORT replacement?](https://discourse.paraview.org/t/vtkpvvtkextensionsdefault-export-replacement/4515)

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**Author:** [@Chris\_Marsh](https://discourse.paraview.org/u/Chris_Marsh)\
**Replies:** 4\
**Last updated:** [June 23, 2020, 9:40pm UTC](https://discourse.paraview.org/t/vtkpvvtkextensionsdefault-export-replacement/4515 "2020-06-23T21:40:34Z")

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I have a plugin derived from vtkTableAlgorithm that I would like to update for Paraview 5.7+. I’ve been following the migration guide. However when building I don’t have this file vtkPVVTKExtensionsDefaultModule.h which…

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## [Populate a StringVector from a file](https://discourse.paraview.org/t/populate-a-stringvector-from-a-file/4646)

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**Author:** [@dwplj](https://discourse.paraview.org/u/dwplj)\
**Replies:** 4\
**Last updated:** [June 23, 2020, 11:35am UTC](https://discourse.paraview.org/t/populate-a-stringvector-from-a-file/4646 "2020-06-23T11:35:30Z")

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Hello all, I have a filter written in Python that presents the user a StringVector for text entry and a filechooser for selecting an optional input file (RequestData processes differently depending on which entry method…

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## [How Paraview release memory?](https://discourse.paraview.org/t/how-paraview-release-memory/4631)

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**Author:** [@sharon](https://discourse.paraview.org/u/sharon)\
**Replies:** 1\
**Last updated:** [June 22, 2020, 8:04am UTC](https://discourse.paraview.org/t/how-paraview-release-memory/4631 "2020-06-22T08:04:44Z")

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Dear Experts, I found that when create a sphere source then delete it from pipeline browser, the memory is not release for the vtkPolyData that hold all the mesh data. It may have some potential reasons for this speci…

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## [Exporting array to Binary fomat crash](https://discourse.paraview.org/t/exporting-array-to-binary-fomat-crash/4618)

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**Author:** [@Potson](https://discourse.paraview.org/u/Potson)\
**Replies:** 1\
**Last updated:** [June 19, 2020, 1:08am UTC](https://discourse.paraview.org/t/exporting-array-to-binary-fomat-crash/4618 "2020-06-19T01:08:12Z")

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Hello, I am using Paraview as a middle man to convert data from Ensight .sos files to binary format for further post-processing. In order to do so, I read the required data and save it to a 2D array. However when I try …

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## [F3D make error in master?](https://discourse.paraview.org/t/f3d-make-error-in-master/4607)

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**Author:** [@GregVernon](https://discourse.paraview.org/u/GregVernon)\
**Replies:** 3\
**Last updated:** [June 18, 2020, 7:44am UTC](https://discourse.paraview.org/t/f3d-make-error-in-master/4607 "2020-06-18T07:44:10Z")

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I’ve just tried building the current master of F3D and am getting an error associated with this line: https://gitlab.kitware.com/f3d/f3d/-/blob/master/src/vtkF3DMetaReader.cxx#L110 /apps/f3d/src/vtkF3DMetaReader.cxx:110…

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## [Dashboards need some attention](https://discourse.paraview.org/t/dashboards-need-some-attention/4598)

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**Author:** [@cory.quammen](https://discourse.paraview.org/u/cory.quammen)\
**Replies:** 8\
**Last updated:** [June 17, 2020, 4:35am UTC](https://discourse.paraview.org/t/dashboards-need-some-attention/4598 "2020-06-17T04:35:57Z")

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Hi folks, the ParaView dashboard for the master branch is a little rough. https://open.cdash.org/index.php?project=ParaView All developers please take a look at the dashboard and see if any of your recent changes may h…

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## [custom property widget doesn't show up](https://discourse.paraview.org/t/custom-property-widget-doesnt-show-up/4561)

<div class="topic-metadata">

**Author:** [@Yoshino](https://discourse.paraview.org/u/Yoshino)\
**Replies:** 1\
**Last updated:** [June 12, 2020, 4:18am UTC](https://discourse.paraview.org/t/custom-property-widget-doesnt-show-up/4561 "2020-06-12T04:18:01Z")

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I want to display the DoubleVectorProperty with an exclusive group of QRadioButton, each of which reflects a double value, by paraview’s custom propertiesPanel mechanism. Referring to example pqMyPropertyWidget from par…

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## [Plugin into a single ddl](https://discourse.paraview.org/t/plugin-into-a-single-ddl/4551)

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**Author:** [@Felipe\_Bordeu](https://discourse.paraview.org/u/Felipe_Bordeu)\
**Replies:** 2\
**Last updated:** [June 10, 2020, 9:28am UTC](https://discourse.paraview.org/t/plugin-into-a-single-ddl/4551 "2020-06-10T09:28:30Z")

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Hi to all, I’m porting my plugin to paraview 5.8 (last time I compiled the plugin was 5 years ago). The plugin is compiled and I can load using my home compiled ParaView (using superbuild) as well as with the precompil…

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## [VtkPythonAlgorithm with adaptable outputType](https://discourse.paraview.org/t/vtkpythonalgorithm-with-adaptable-outputtype/4546)

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**Author:** [@Loic](https://discourse.paraview.org/u/Loic)\
**Replies:** 0\
**Last updated:** [June 9, 2020, 10:01am UTC](https://discourse.paraview.org/t/vtkpythonalgorithm-with-adaptable-outputtype/4546 "2020-06-09T10:01:57Z")

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I would like to develop a filter that could works with either vtkUnstructuredGrid or vtkPolyData objects: if the input object is a vtkUnstructuredGrid, it should return a vtkUnstructuredGrid object if the input object…

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## [Question about TXT file in paraview](https://discourse.paraview.org/t/question-about-txt-file-in-paraview/4524)

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**Author:** [@basal](https://discourse.paraview.org/u/basal)\
**Replies:** 3\
**Last updated:** [June 8, 2020, 4:03pm UTC](https://discourse.paraview.org/t/question-about-txt-file-in-paraview/4524 "2020-06-08T16:03:08Z")

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Hi, I opened VTK file from registration in paraview and created a glyph and export the txt file which was for deformation field. Does anyone know that the last three columns show the deformed points or I have to apply fi…

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## [gitlab.kitware.com is down](https://discourse.paraview.org/t/gitlab-kitware-com-is-down/4507)

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**Author:** [@cory.quammen](https://discourse.paraview.org/u/cory.quammen)\
**Replies:** 1\
**Last updated:** [June 5, 2020, 2:42pm UTC](https://discourse.paraview.org/t/gitlab-kitware-com-is-down/4507 "2020-06-05T14:42:39Z")

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Hi ParaView developers. gitlab.kitware.com is currently down for unexpected maintenance. I will post an update when it is back up.

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## [plugin cannot be configured because of missing ParaViewConfig.cmake](https://discourse.paraview.org/t/plugin-cannot-be-configured-because-of-missing-paraviewconfig-cmake/4485)

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**Author:** [@jfavre](https://discourse.paraview.org/u/jfavre)\
**Replies:** 9\
**Last updated:** [June 5, 2020, 9:43am UTC](https://discourse.paraview.org/t/plugin-cannot-be-configured-because-of-missing-paraviewconfig-cmake/4485 "2020-06-05T09:43:33Z")

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I am compiling v5.8 with cmake (3.16.3) installed by default under Ubuntu 20.04 Compilation of ParaView itself works fine, but plugins cannot be configured because I cannot find anywhere (in the build tree, or in the in…

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## [Making plugin's panel invisible programmatically](https://discourse.paraview.org/t/making-plugins-panel-invisible-programmatically/4503)

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**Author:** [@siver](https://discourse.paraview.org/u/siver)\
**Replies:** 1\
**Last updated:** [June 5, 2020, 3:18am UTC](https://discourse.paraview.org/t/making-plugins-panel-invisible-programmatically/4503 "2020-06-05T03:18:57Z")

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Dear PV devs, How do I make a panel of a plugin invisible within c++? By panel I mean \<PropertyGroup\> which has a name and several properties. So far, I have tried calling hide() and setVisibility(false), to no effect…

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## [Plugin Reader Based on Another Plugin](https://discourse.paraview.org/t/plugin-reader-based-on-another-plugin/1924)

<div class="topic-metadata">

**Author:** [@theodorebaltis](https://discourse.paraview.org/u/theodorebaltis)\
**Replies:** 8\
**Last updated:** [June 5, 2020, 2:06am UTC](https://discourse.paraview.org/t/plugin-reader-based-on-another-plugin/1924 "2020-06-05T02:06:22Z")

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Hello. I have built a Python-based reader plugin that works just fine for a single file. It’s actually the reader I asked for help with here But now I would like to use it to open a series of files. I’ve been attemptin…

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## [Create File for ParaView to read](https://discourse.paraview.org/t/create-file-for-paraview-to-read/4450)

<div class="topic-metadata">

**Author:** [@savalma](https://discourse.paraview.org/u/savalma)\
**Replies:** 13\
**Last updated:** [June 5, 2020, 2:00am UTC](https://discourse.paraview.org/t/create-file-for-paraview-to-read/4450 "2020-06-05T02:00:24Z")

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Hello, I have used ParaView to visualize numerical results from Open Foam and I think it is a great source to post-process hydrodynamic numerical simulations. I am currently using SI3D, a finite difference hydrodynamic …

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## [Showing partial arrays in spreadsheet view](https://discourse.paraview.org/t/showing-partial-arrays-in-spreadsheet-view/4401)

<div class="topic-metadata">

**Author:** [@utkarsh.ayachit](https://discourse.paraview.org/u/utkarsh.ayachit)\
**Replies:** 3\
**Last updated:** [June 2, 2020, 5:23pm UTC](https://discourse.paraview.org/t/showing-partial-arrays-in-spreadsheet-view/4401 "2020-06-02T17:23:01Z")

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When dealing with composite-datasets such as multiblock-datasets or partitioned-dataset-collections, it’s not uncommon to have different set of arrays for each of the datasets that are part of the composite-dataset . Whe…

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