# Development

**URL:** https://discourse.paraview.org/c/development/6.md?no_subcategories=false&page=34

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

**Page:** 35

---

## [Build project setup question](https://discourse.paraview.org/t/build-project-setup-question/1769)

<div class="topic-metadata">

**Author:** [@cobo](https://discourse.paraview.org/u/cobo)\
**Replies:** 4\
**Last updated:** [May 7, 2019, 2:06pm UTC](https://discourse.paraview.org/t/build-project-setup-question/1769 "2019-05-07T14:06:24Z")

</div>

For some plugins that I intend to write, I need to pull in the libgeotiff library into my Paraview custom application. I can even find a libgeotiff repository that already uses cmake, and I can try to compile it - standa…

---

## [Surface Cutting Project - Extracting Cells within User-Specified Loop of Vertices](https://discourse.paraview.org/t/surface-cutting-project-extracting-cells-within-user-specified-loop-of-vertices/1755)

<div class="topic-metadata">

**Author:** [@Connie\_He](https://discourse.paraview.org/u/Connie_He)\
**Replies:** 0\
**Last updated:** [May 2, 2019, 8:32pm UTC](https://discourse.paraview.org/t/surface-cutting-project-extracting-cells-within-user-specified-loop-of-vertices/1755 "2019-05-02T20:32:42Z")

</div>

Hi, I am working on developing a set of new filters in Paraview and was wondering if anyone could provide advice on how to implement it. The filters are supposed to be used on brain surfaces (i.e. processed MRI scans). …

---

## [Single or multiple charts plugin - looking for a good example](https://discourse.paraview.org/t/single-or-multiple-charts-plugin-looking-for-a-good-example/1725)

<div class="topic-metadata">

**Author:** [@cobo](https://discourse.paraview.org/u/cobo)\
**Replies:** 3\
**Last updated:** [April 30, 2019, 8:12am UTC](https://discourse.paraview.org/t/single-or-multiple-charts-plugin-looking-for-a-good-example/1725 "2019-04-30T08:12:09Z")

</div>

My intention is to write a plugin that shows one or several charts, i.e. 2D graphic like “histogram view” (one chart) or “matrix view” (multiple charts in one view). After having written other plugins, I think that my b…

---

## [Found dependency on boost but not really necessary?](https://discourse.paraview.org/t/found-dependency-on-boost-but-not-really-necessary/1685)

<div class="topic-metadata">

**Author:** [@penta314](https://discourse.paraview.org/u/penta314)\
**Replies:** 3\
**Last updated:** [April 26, 2019, 1:29pm UTC](https://discourse.paraview.org/t/found-dependency-on-boost-but-not-really-necessary/1685 "2019-04-26T13:29:49Z")

</div>

Hi all, First of all, I’d like to warn that this estrange thing I’ve found in Paraview 5.0.1 + Linux binaries, I would just like to understand if this is something known already. I downloaded from the downloads section…

---

## [Writing pvtu files from Catalyst ...](https://discourse.paraview.org/t/writing-pvtu-files-from-catalyst/1720)

<div class="topic-metadata">

**Author:** [@Niklas](https://discourse.paraview.org/u/Niklas)\
**Replies:** 2\
**Last updated:** [April 25, 2019, 1:50pm UTC](https://discourse.paraview.org/t/writing-pvtu-files-from-catalyst/1720 "2019-04-25T13:50:23Z")

</div>

Dear All, I am having difficulties with writing out pvtu files from a Catalyst process. Writing them out directly using for instance a threshold defined within the python script works great, but I do have another functi…

---

## [vtkIOFFMPEG-pv5.5.dll Fails to Link on Windows](https://discourse.paraview.org/t/vtkioffmpeg-pv5-5-dll-fails-to-link-on-windows/1706)

<div class="topic-metadata">

**Author:** [@Patrick\_Avery](https://discourse.paraview.org/u/Patrick_Avery)\
**Replies:** 5\
**Last updated:** [April 24, 2019, 9:03pm UTC](https://discourse.paraview.org/t/vtkioffmpeg-pv5-5-dll-fails-to-link-on-windows/1706 "2019-04-24T21:03:53Z")

</div>

For tomviz, when we try to build the master branch of ParaView on Windows (with FFMPEG enabled), linking fails with messages such as those pasted below. The full output of our build on buildbot can be seen here. We are b…

---

## [Behavior of saving side-by-side stereo screenshot](https://discourse.paraview.org/t/behavior-of-saving-side-by-side-stereo-screenshot/1679)

<div class="topic-metadata">

**Author:** [@Andy\_Bauer](https://discourse.paraview.org/u/Andy_Bauer)\
**Replies:** 3\
**Last updated:** [April 17, 2019, 3:16pm UTC](https://discourse.paraview.org/t/behavior-of-saving-side-by-side-stereo-screenshot/1679 "2019-04-17T15:16:15Z")

</div>

When saving a screenshot in stereo with side-by-side horizontal should the image width be automatically be doubled? E.g. if the view size is 800 by 800 pixels should the output image size be set to 1600 by 800? I’d think…

---

## [Data Arrays Not Checked On By Default](https://discourse.paraview.org/t/data-arrays-not-checked-on-by-default/1680)

<div class="topic-metadata">

**Author:** [@Aandreyev](https://discourse.paraview.org/u/Aandreyev)\
**Replies:** 0\
**Last updated:** [April 16, 2019, 9:38pm UTC](https://discourse.paraview.org/t/data-arrays-not-checked-on-by-default/1680 "2019-04-16T21:38:56Z")

</div>

Hi all, I have a slight issue with a reader that I have written. When I open the file, all of the data (cell data) is unchecked by default. This would not be be a big deal if it weren’t for the fact that it causes probl…

---

## [Loading .so plugin to C++](https://discourse.paraview.org/t/loading-so-plugin-to-c/1652)

<div class="topic-metadata">

**Author:** [@sariug](https://discourse.paraview.org/u/sariug)\
**Replies:** 3\
**Last updated:** [April 15, 2019, 12:52pm UTC](https://discourse.paraview.org/t/loading-so-plugin-to-c/1652 "2019-04-15T12:52:05Z")

</div>

Hello, I am new to VTK and hope asking question to correct place. I am trying to implement c++ code and I want to use a custom paraview plugin an old collegue prepared. It is a .so file. I want to do is as it is done i…

---

## [Make parallel XML writers always available](https://discourse.paraview.org/t/make-parallel-xml-writers-always-available/1646)

<div class="topic-metadata">

**Author:** [@Andy\_Bauer](https://discourse.paraview.org/u/Andy_Bauer)\
**Replies:** 2\
**Last updated:** [April 12, 2019, 2:42pm UTC](https://discourse.paraview.org/t/make-parallel-xml-writers-always-available/1646 "2019-04-12T14:42:17Z")

</div>

Could we make the parallel XML writers always available? For saving traces in the GUI and then later running them in parallel it would be nice to have this. Also, through the Python API then I wouldn’t have to switch the…

---

## [VTKPythonAlgorithmBase decorator for 1 or 2 params?](https://discourse.paraview.org/t/vtkpythonalgorithmbase-decorator-for-1-or-2-params/1635)

<div class="topic-metadata">

**Author:** [@aron.helser](https://discourse.paraview.org/u/aron.helser)\
**Replies:** 2\
**Last updated:** [April 9, 2019, 6:31pm UTC](https://discourse.paraview.org/t/vtkpythonalgorithmbase-decorator-for-1-or-2-params/1635 "2019-04-09T18:31:29Z")

</div>

I’m working on some filters in Python using VTKPythonAlgorithmBase, and I was wondering how to decorate a method so it can take a single string argument or an array of two (or more?) strings? If I do: @smproperty.str…

---

## [CMake Compile Issue ...](https://discourse.paraview.org/t/cmake-compile-issue/1634)

<div class="topic-metadata">

**Author:** [@Niklas](https://discourse.paraview.org/u/Niklas)\
**Replies:** 2\
**Last updated:** [April 9, 2019, 4:48pm UTC](https://discourse.paraview.org/t/cmake-compile-issue/1634 "2019-04-09T16:48:55Z")

</div>

Dear All, @ben.boeckel I have a little CMake problem that I could not solve so far. I have C Code in my plugin, and need to pass the location of two external header files to it. They are both located in the same directo…

---

## [Compiling with Visual Studio 2019?](https://discourse.paraview.org/t/compiling-with-visual-studio-2019/1619)

<div class="topic-metadata">

**Author:** [@aron.helser](https://discourse.paraview.org/u/aron.helser)\
**Replies:** 2\
**Last updated:** [April 9, 2019, 3:34pm UTC](https://discourse.paraview.org/t/compiling-with-visual-studio-2019/1619 "2019-04-09T15:34:50Z")

</div>

I’m seeing a minor issue with VS2019 on master (new laptop, new compiler!), just wondering if others have seen it. A few files need and extra #include \<string\> apparently because of the use of vtkGetStringMacro for iv…

---

## [Release using Python3](https://discourse.paraview.org/t/release-using-python3/553)

<div class="topic-metadata">

**Author:** [@LucasGandel](https://discourse.paraview.org/u/LucasGandel)\
**Replies:** 3\
**Last updated:** [April 8, 2019, 6:59pm UTC](https://discourse.paraview.org/t/release-using-python3/553 "2019-04-08T18:59:37Z")

</div>

Hi paraview developers, I need to use a python3 module with paraview simple. I could build Paraview using Python3 but was wondering if future releases were planning on switching to Python3? Thank you, Lucas

---

## [Visualisation pipeline](https://discourse.paraview.org/t/visualisation-pipeline/1626)

<div class="topic-metadata">

**Author:** [@alpha](https://discourse.paraview.org/u/alpha)\
**Replies:** 0\
**Last updated:** [April 8, 2019, 2:47pm UTC](https://discourse.paraview.org/t/visualisation-pipeline/1626 "2019-04-08T14:47:57Z")

</div>

hello guy, I havequestions: How the visualisation pipe line works here ? Do you have GPU ? do you render image from a bitmap image on your own (by code)?

---

## [ParaView Python Version](https://discourse.paraview.org/t/paraview-python-version/1607)

<div class="topic-metadata">

**Author:** [@Patrick\_Avery](https://discourse.paraview.org/u/Patrick_Avery)\
**Replies:** 7\
**Last updated:** [April 5, 2019, 8:59pm UTC](https://discourse.paraview.org/t/paraview-python-version/1607 "2019-04-05T20:59:22Z")

</div>

Hi there, I’m in the process of upgrading tomviz to the latest ParaView. Previously, we would read these cmake definitions to get the python dependencies: ParaView\_PYTHON\_INCLUDE\_DIR ParaView\_PYTHON\_LIBRARY ParaView\_P…

---

## [Memory continuously increasing when using IntersectWithLine from any vtkAbstractCellLocator implementation in a loop inside a python filter plugin](https://discourse.paraview.org/t/memory-continuously-increasing-when-using-intersectwithline-from-any-vtkabstractcelllocator-implementation-in-a-loop-inside-a-python-filter-plugin/1600)

<div class="topic-metadata">

**Author:** [@Kevin](https://discourse.paraview.org/u/Kevin)\
**Replies:** 0\
**Last updated:** [April 4, 2019, 4:31pm UTC](https://discourse.paraview.org/t/memory-continuously-increasing-when-using-intersectwithline-from-any-vtkabstractcelllocator-implementation-in-a-loop-inside-a-python-filter-plugin/1600 "2019-04-04T16:31:25Z")

</div>

Hi, I am trying to use one of the vtkAbstractCellLocator implementation, especially vtkModifiedBSPTree since it appears much faster than others, to do some kind of raytracing in a python plugin. The main idea is basica…

---

## [Is there something wrong with the paraview-config.cmake file on master?](https://discourse.paraview.org/t/is-there-something-wrong-with-the-paraview-config-cmake-file-on-master/1556)

<div class="topic-metadata">

**Author:** [@Andy\_Bauer](https://discourse.paraview.org/u/Andy_Bauer)\
**Replies:** 1\
**Last updated:** [March 29, 2019, 5:21pm UTC](https://discourse.paraview.org/t/is-there-something-wrong-with-the-paraview-config-cmake-file-on-master/1556 "2019-03-29T17:21:34Z")

</div>

I’m trying to find ParaView using find\_package(ParaView COMPONENTS ParaView::PythonCatalyst REQUIRED) but am getting the following CMake error: Could not find the ParaView package with the following required components…

---

## [Cmake issue with windows static](https://discourse.paraview.org/t/cmake-issue-with-windows-static/1497)

<div class="topic-metadata">

**Author:** [@martink](https://discourse.paraview.org/u/martink)\
**Replies:** 1\
**Last updated:** [March 21, 2019, 3:02pm UTC](https://discourse.paraview.org/t/cmake-issue-with-windows-static/1497 "2019-03-21T15:02:46Z")

</div>

FYI I see on a static RelWithDebInfo build the following errors. Shared is fine. CMake Error: install(EXPORT "ParaView" …) includes target "ServerManagerApplication" which requires target "paraview\_client\_server" that …

---

## [paraview.simple SaveData Paraview 5.6 built on Ubuntu .04](https://discourse.paraview.org/t/paraview-simple-savedata-paraview-5-6-built-on-ubuntu-04/1487)

<div class="topic-metadata">

**Author:** [@raymon68](https://discourse.paraview.org/u/raymon68)\
**Replies:** 4\
**Last updated:** [March 19, 2019, 5:33pm UTC](https://discourse.paraview.org/t/paraview-simple-savedata-paraview-5-6-built-on-ubuntu-04/1487 "2019-03-19T17:33:08Z")

</div>

Hello. I hope this problem has been solved. If it has, lob a tomato at me with the url for the fix printed on it. I am using paraview simple. Eclipse is the editor. I am trying to read in ExodusIIData ship it out to…

---

## [Should there be a pinned topic with the minimum supported compiler versions](https://discourse.paraview.org/t/should-there-be-a-pinned-topic-with-the-minimum-supported-compiler-versions/1485)

<div class="topic-metadata">

**Author:** [@Andy\_Bauer](https://discourse.paraview.org/u/Andy_Bauer)\
**Replies:** 1\
**Last updated:** [March 18, 2019, 4:11pm UTC](https://discourse.paraview.org/t/should-there-be-a-pinned-topic-with-the-minimum-supported-compiler-versions/1485 "2019-03-18T16:11:02Z")

</div>

It would be great to have a convenient place to find the minimum compiler versions required for ParaView versions. Right now it kind of looks like GCC is by default at 5.4 since that is the oldest compiler version for th…

---

## [Feature suggestion: auto save & stop animation ....](https://discourse.paraview.org/t/feature-suggestion-auto-save-stop-animation/1462)

<div class="topic-metadata">

**Author:** [@Niklas](https://discourse.paraview.org/u/Niklas)\
**Replies:** 2\
**Last updated:** [March 13, 2019, 9:16pm UTC](https://discourse.paraview.org/t/feature-suggestion-auto-save-stop-animation/1462 "2019-03-13T21:16:41Z")

</div>

Hi, I have two feature suggestions, that bother us a bit, and which should not be too difficult to implement. I am sure that the community would love those too. One would be an autosave option in ParaView for state file…

---

## [Gouraud or Flat](https://discourse.paraview.org/t/gouraud-or-flat/1450)

<div class="topic-metadata">

**Author:** [@cobo](https://discourse.paraview.org/u/cobo)\
**Replies:** 3\
**Last updated:** [March 13, 2019, 12:06am UTC](https://discourse.paraview.org/t/gouraud-or-flat/1450 "2019-03-13T00:06:49Z")

</div>

Inside a self-written filter (C++) I am applying a “TubeFilter” to some line segments - works fine. In order to make things perfect, I would like to have some of the tubes appear “round” and others appear “polygonal”. N…

---

## [How to implement custom scrollable view?](https://discourse.paraview.org/t/how-to-implement-custom-scrollable-view/1448)

<div class="topic-metadata">

**Author:** [@e-kolosov](https://discourse.paraview.org/u/e-kolosov)\
**Replies:** 0\
**Last updated:** [March 12, 2019, 3:16pm UTC](https://discourse.paraview.org/t/how-to-implement-custom-scrollable-view/1448 "2019-03-12T15:16:52Z")

</div>

Picture 1. Picture 2. Our team work on Cardiac Scientific Project. We have hardware device with 256 leads. The user need to view (see pic. 2) this leads with scrollable vertical representation (1). Because the reco…

---

## [remove legacy catalyst export wizard](https://discourse.paraview.org/t/remove-legacy-catalyst-export-wizard/1440)

<div class="topic-metadata">

**Author:** [@utkarsh.ayachit](https://discourse.paraview.org/u/utkarsh.ayachit)\
**Replies:** 3\
**Last updated:** [March 12, 2019, 12:46am UTC](https://discourse.paraview.org/t/remove-legacy-catalyst-export-wizard/1440 "2019-03-12T00:46:53Z")

</div>

What’s our plan for removing the legacy Catalyst export wizard? I’m referring to the Generate Script -deprecated and Data Extract Writers -deprecated menu options. cc: @Dave\_DeMarle

---

## [Dropping support for OS X 10.11 (El Capitan)](https://discourse.paraview.org/t/dropping-support-for-os-x-10-11-el-capitan/1431)

<div class="topic-metadata">

**Author:** [@utkarsh.ayachit](https://discourse.paraview.org/u/utkarsh.ayachit)\
**Replies:** 3\
**Last updated:** [March 11, 2019, 6:44pm UTC](https://discourse.paraview.org/t/dropping-support-for-os-x-10-11-el-capitan/1431 "2019-03-11T18:44:59Z")

</div>

Should we drop OS X 10.11 (El Capitan)? With Qt and OS X always being a finicky pair, I am trying to narrow down the combinations we support. Since Apple stopped supported OS X 10.11 as of August 2018, does it make sense…

---

## [How to set StringVectorProperty from a PropertyGroup panel\_widget](https://discourse.paraview.org/t/how-to-set-stringvectorproperty-from-a-propertygroup-panel-widget/1406)

<div class="topic-metadata">

**Author:** [@michal.wozniak](https://discourse.paraview.org/u/michal.wozniak)\
**Replies:** 2\
**Last updated:** [March 7, 2019, 4:28pm UTC](https://discourse.paraview.org/t/how-to-set-stringvectorproperty-from-a-propertygroup-panel-widget/1406 "2019-03-07T16:28:38Z")

</div>

Hi, I am trying to create a panel widget for a group property, In my pqInteractiveSettingPropertyGroup, I am trying to set the value of SettingA, do I need to use auto settingA = vtkSMIntVectorProperty::SafeDownCast(thi…

---

## [Moving towards CGNS 3.4 support](https://discourse.paraview.org/t/moving-towards-cgns-3-4-support/1410)

<div class="topic-metadata">

**Author:** [@MicK7](https://discourse.paraview.org/u/MicK7)\
**Replies:** 1\
**Last updated:** [March 7, 2019, 10:46am UTC](https://discourse.paraview.org/t/moving-towards-cgns-3-4-support/1410 "2019-03-07T10:46:17Z")

</div>

In order to support CGNS 3.4 in ParaView, a change is required concerning NGON/NFACE support. In fact, ParaView would drop support for previous formulation in favor of CGNS 3.4 definition. Before merging the changes in t…

---

## [ParaViewWeb Visualizer](https://discourse.paraview.org/t/paraviewweb-visualizer/1268)

<div class="topic-metadata">

**Author:** [@barak.o](https://discourse.paraview.org/u/barak.o)\
**Replies:** 19\
**Last updated:** [March 6, 2019, 4:01pm UTC](https://discourse.paraview.org/t/paraviewweb-visualizer/1268 "2019-03-06T16:01:12Z")

</div>

Hello, I Created project with visualizer to show vtk file. I want show also some points on the screen, I want the round and focus of vtk will be effect also the points. What the best way to do it? Thanks, O.Barak

---

## [Visualizer - Data file from url](https://discourse.paraview.org/t/visualizer-data-file-from-url/1378)

<div class="topic-metadata">

**Author:** [@ravid.l](https://discourse.paraview.org/u/ravid.l)\
**Replies:** 3\
**Last updated:** [March 4, 2019, 4:17pm UTC](https://discourse.paraview.org/t/visualizer-data-file-from-url/1378 "2019-03-04T16:17:32Z")

</div>

I send to confgure - url instead of path to local file: Visualizer.connect({ application: ‘visualizer’, dataFile: ‘a.vtk@http://bioup.azurewebsites.net/a.json’, dataDir: “http://bioup.azurewebsites.net/” }); But …

[Previous page](https://discourse.paraview.org/c/development/6.md?no_subcategories=false&page=33)

[Next page](https://discourse.paraview.org/c/development/6.md?no_subcategories=false&page=35)