# Development

**URL:** https://discourse.paraview.org/c/development/6.md?no_subcategories=false&page=18

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**Page:** 19

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## [Support FieldData in Catalyst2](https://discourse.paraview.org/t/support-fielddata-in-catalyst2/8763)

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**Author:** [@Francois\_Mazen](https://discourse.paraview.org/u/Francois_Mazen)\
**Replies:** 5\
**Last updated:** [February 7, 2022, 2:39pm UTC](https://discourse.paraview.org/t/support-fielddata-in-catalyst2/8763 "2022-02-07T14:39:13Z")

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Hello Catalyst community, I’m designing the support of VTK field data in Catalyst2. Field data is basically metadata associated to a Data Object. The main problem is to define where the field data should be defined in t…

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## [Contour array is null](https://discourse.paraview.org/t/contour-array-is-null/8855)

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**Author:** [@Kenneth](https://discourse.paraview.org/u/Kenneth)\
**Replies:** 2\
**Last updated:** [January 28, 2022, 8:28am UTC](https://discourse.paraview.org/t/contour-array-is-null/8855 "2022-01-28T08:28:10Z")

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I am visualizing a mesh that has 155520 parts (\> 10B elements) on 48 processes using pvbatch. As you can imagine, almost any contour I choose is going to be empty on a large number of those parts. I am assuming that t…

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## [Problem reading 16-bit TIFF File](https://discourse.paraview.org/t/problem-reading-16-bit-tiff-file/8853)

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**Author:** [@sjgallagher2](https://discourse.paraview.org/u/sjgallagher2)\
**Replies:** 0\
**Last updated:** [January 27, 2022, 7:29pm UTC](https://discourse.paraview.org/t/problem-reading-16-bit-tiff-file/8853 "2022-01-27T19:29:35Z")

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Trying to read a 16-bit grayscale TIFF image saved with OpenCV in Python, and I’m getting the error: ERROR: In C:\\glr\\builds\\paraview\\paraview-ci\\build\\superbuild\\paraview\\src\\VTK\\IO\\Image\\vtkTIFFReader.cxx, line 1136 …

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## [is it feasible to show axis on zoomed in data ?](https://discourse.paraview.org/t/is-it-feasible-to-show-axis-on-zoomed-in-data/496)

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**Author:** [@embeddedmz](https://discourse.paraview.org/u/embeddedmz)\
**Replies:** 4\
**Last updated:** [January 25, 2022, 9:42am UTC](https://discourse.paraview.org/t/is-it-feasible-to-show-axis-on-zoomed-in-data/496 "2022-01-25T09:42:04Z")

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Hi, The title says it all : when I zoom in a 2-D vtkImageData, I’m obliged to move the mouse to look at the axis value. Is it possible to adapt the view axis if the 2-D vtkImageData exceeds the edges of a ParaView’s vi…

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## [paraview superbuild failing for 5.10](https://discourse.paraview.org/t/paraview-superbuild-failing-for-5-10/8750)

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**Author:** [@Andy\_Bauer](https://discourse.paraview.org/u/Andy_Bauer)\
**Replies:** 6\
**Last updated:** [January 24, 2022, 5:43pm UTC](https://discourse.paraview.org/t/paraview-superbuild-failing-for-5-10/8750 "2022-01-24T17:43:05Z")

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I’m getting a build issue with the PV 5.10 superbuild (using the V5.10.0 git tag) and gcc 7.3.0 and the following: cmake -DBUILD\_TESTING=OFF -DCMAKE\_INSTALL\_PREFIX=/app/DAAC/paraview/5.10.0\_osmesa\_intelmpi/ -DENABLE\_pyt…

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## [AMR Slice in parallel creates holes in the data or crashes](https://discourse.paraview.org/t/amr-slice-in-parallel-creates-holes-in-the-data-or-crashes/1323)

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**Author:** [@Aandreyev](https://discourse.paraview.org/u/Aandreyev)\
**Replies:** 1\
**Last updated:** [January 24, 2022, 1:30pm UTC](https://discourse.paraview.org/t/amr-slice-in-parallel-creates-holes-in-the-data-or-crashes/1323 "2022-01-24T13:30:16Z")

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Hello all, I have written an AMR reader for our in house code. My class is a child of vtkAMRBaseReader and I let it handle the parallel stuff using its Controller. For the most part, the reader works however in certain …

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## [ParaView output message - vtkXMLParser Error parsing XML](https://discourse.paraview.org/t/paraview-output-message-vtkxmlparser-error-parsing-xml/8816)

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**Author:** [@kayang](https://discourse.paraview.org/u/kayang)\
**Replies:** 23\
**Last updated:** [January 24, 2022, 11:33am UTC](https://discourse.paraview.org/t/paraview-output-message-vtkxmlparser-error-parsing-xml/8816 "2022-01-24T11:33:11Z")

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Hello, I got the executable file (paraview.exe) by building the latest ParaView source on Windows. However, when this file is executed, the following output message is displayed. Why is this output message coming out? …

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## [Paraview 5.9.1 ghostCells](https://discourse.paraview.org/t/paraview-5-9-1-ghostcells/8807)

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**Author:** [@ThomasAC](https://discourse.paraview.org/u/ThomasAC)\
**Replies:** 6\
**Last updated:** [January 21, 2022, 6:06pm UTC](https://discourse.paraview.org/t/paraview-5-9-1-ghostcells/8807 "2022-01-21T18:06:04Z")

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Hi, we have a custom cxx reader plugin. When updating ParaView from v5.8.1 to v5.9.1, we ran some small tests to ensure that the plugin is still doing what its supposed to do. I observed that when I load the same data …

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## [How to force netcdf parallel build in Paraview 5.10.0](https://discourse.paraview.org/t/how-to-force-netcdf-parallel-build-in-paraview-5-10-0/8786)

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**Author:** [@Trophime](https://discourse.paraview.org/u/Trophime)\
**Replies:** 7\
**Last updated:** [January 17, 2022, 6:18pm UTC](https://discourse.paraview.org/t/how-to-force-netcdf-parallel-build-in-paraview-5-10-0/8786 "2022-01-17T18:18:02Z")

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Hi, I’m trying to rebuild paraview 5.10.0 as a debian package for Debian/Testing I would like to make a clean build using hdf5 mpi version. This is why I have to rebuild netcdf requirement instead of using netcdf pack…

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## [Build with LAS problem](https://discourse.paraview.org/t/build-with-las-problem/8778)

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**Author:** [@cobo](https://discourse.paraview.org/u/cobo)\
**Replies:** 12\
**Last updated:** [January 17, 2022, 10:07am UTC](https://discourse.paraview.org/t/build-with-las-problem/8778 "2022-01-17T10:07:16Z")

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I assume that this is a very simple question - once I know how to proceed! Intention: Build ParaView with LAS data file import, currently on Linux, later Windows intended. Turning the option on, CMake will ask for libL…

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## [Buttons in Plugin property panel disapear in ParaView5.10](https://discourse.paraview.org/t/buttons-in-plugin-property-panel-disapear-in-paraview5-10/8777)

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**Author:** [@ymjia](https://discourse.paraview.org/u/ymjia)\
**Replies:** 4\
**Last updated:** [January 17, 2022, 9:21am UTC](https://discourse.paraview.org/t/buttons-in-plugin-property-panel-disapear-in-paraview5-10/8777 "2022-01-17T09:21:21Z")

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I have a plugin Reader reading file and running some algorithm, in the property panel, there is a button to reload some value, servermanager xml like this: \<SourceProxy name="MyDecoder" class = "MyDecoder" label="MyDec…

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## [Python import error](https://discourse.paraview.org/t/python-import-error/8767)

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**Author:** [@todoooo](https://discourse.paraview.org/u/todoooo)\
**Replies:** 1\
**Last updated:** [January 14, 2022, 1:16am UTC](https://discourse.paraview.org/t/python-import-error/8767 "2022-01-14T01:16:47Z")

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I just built Paraview on Windows 10 from master and now I’m getting an error when trying to run pvbatch from the command line. It was working previously with the code base from a month ago. C:\\Users\\toddm\\Downloads\\par…

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## [Automatic naming of tensor components](https://discourse.paraview.org/t/automatic-naming-of-tensor-components/8762)

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**Author:** [@mwestphal](https://discourse.paraview.org/u/mwestphal)\
**Replies:** 16\
**Last updated:** [January 13, 2022, 12:59pm UTC](https://discourse.paraview.org/t/automatic-naming-of-tensor-components/8762 "2022-01-13T12:59:46Z")

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@fredrik would like to introduce automatic naming of tensor components: See this discussion: And this MR: https://gitlab.kitware.com/paraview/paraview/-/merge\_requests/5442 There is already automatic naming of 6 co…

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## [Incremental Trace No Longer Scrolling to Bottom](https://discourse.paraview.org/t/incremental-trace-no-longer-scrolling-to-bottom/8727)

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**Author:** [@theodorebaltis](https://discourse.paraview.org/u/theodorebaltis)\
**Replies:** 4\
**Last updated:** [January 4, 2022, 9:41pm UTC](https://discourse.paraview.org/t/incremental-trace-no-longer-scrolling-to-bottom/8727 "2022-01-04T21:41:16Z")

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First of all, thanks for the updates and new version of the software! Now on to the complaining … :stuck\_out\_tongue\_winking\_eye: In 5.10 official I’ve noticed that the Incremental Trace window no longer scrolls to the …

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## [Updates to Virtual Reality support in ParaView](https://discourse.paraview.org/t/updates-to-virtual-reality-support-in-paraview/2046)

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**Author:** [@martink](https://discourse.paraview.org/u/martink)\
**Replies:** 16\
**Last updated:** [September 11, 2020, 4:17pm UTC](https://discourse.paraview.org/t/updates-to-virtual-reality-support-in-paraview/2046 "2020-09-11T16:17:29Z")

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There have been some updates to the VR capabilities in ParaView that I wanted to share. They are still in early development but I have put up an executable here if you would like to try them out. They include displaying…

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## [ParaView reader](https://discourse.paraview.org/t/paraview-reader/8618)

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**Author:** [@sv650](https://discourse.paraview.org/u/sv650)\
**Replies:** 1\
**Last updated:** [December 14, 2021, 10:28am UTC](https://discourse.paraview.org/t/paraview-reader/8618 "2021-12-14T10:28:23Z")

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Hi, I want to write my first plugin in ParaView to read files of NeXus format (1.2. NeXus Design — nexus v2020.10 documentation). NeXus is a file format that sits on top of HDF5. I think in the first instance my data …

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## [Problem with missing md5sum for boost in superbuild for 5.10.0-RC1 and 5.10.0-RC2](https://discourse.paraview.org/t/problem-with-missing-md5sum-for-boost-in-superbuild-for-5-10-0-rc1-and-5-10-0-rc2/8534)

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**Author:** [@joeh](https://discourse.paraview.org/u/joeh)\
**Replies:** 4\
**Last updated:** [December 10, 2021, 2:02am UTC](https://discourse.paraview.org/t/problem-with-missing-md5sum-for-boost-in-superbuild-for-5-10-0-rc1-and-5-10-0-rc2/8534 "2021-12-10T02:02:14Z")

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The superbuild/versions.cmake files entry for boost is missing the md5sum It should be superbuild\_set\_revision(boost URL “https://www.paraview.org/files/dependencies/boost\_1\_76\_0.tar.bz2” URL\_MD5 33334dd7f862e8ac…

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## [ParaView segmentation fault when reading GMSH files (GmshIO Plugin)](https://discourse.paraview.org/t/paraview-segmentation-fault-when-reading-gmsh-files-gmshio-plugin/8550)

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**Author:** [@gnikit](https://discourse.paraview.org/u/gnikit)\
**Replies:** 3\
**Last updated:** [December 3, 2021, 10:01am UTC](https://discourse.paraview.org/t/paraview-segmentation-fault-when-reading-gmsh-files-gmshio-plugin/8550 "2021-12-03T10:01:22Z")

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When attempting to load a GMSH file with the GmshIO plugin that is included in ParaView 5.10.0-RC1+. ParaView suddenly aborts and throws an error about libc. I suspect that this is a bug related to different versions of…

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## [Custom Threshold filter with dropdown selection](https://discourse.paraview.org/t/custom-threshold-filter-with-dropdown-selection/8440)

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**Author:** [@Raphael\_Bevand](https://discourse.paraview.org/u/Raphael_Bevand)\
**Replies:** 5\
**Last updated:** [December 1, 2021, 10:43pm UTC](https://discourse.paraview.org/t/custom-threshold-filter-with-dropdown-selection/8440 "2021-12-01T22:43:57Z")

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Hello, I want to create a custom threshold filter for my simulation analysis. The “Minimum” and “Maximum” values should not be set by the user but adapted automatically according to the geometry item selected from a dro…

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## [Python Annotation Improvements](https://discourse.paraview.org/t/python-annotation-improvements/4828)

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**Author:** [@mwestphal](https://discourse.paraview.org/u/mwestphal)\
**Replies:** 10\
**Last updated:** [December 1, 2021, 7:11am UTC](https://discourse.paraview.org/t/python-annotation-improvements/4828 "2021-12-01T07:11:52Z")

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I think the python annotation could be improved to be more generic and versatile. There is a few axes of improvements : Let the user import any python modules Simplify the construction of complex expressions Use a bet…

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## [Explicitly naming variables and blocks in trace](https://discourse.paraview.org/t/explicitly-naming-variables-and-blocks-in-trace/8515)

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**Author:** [@wascott](https://discourse.paraview.org/u/wascott)\
**Replies:** 2\
**Last updated:** [December 1, 2021, 3:26am UTC](https://discourse.paraview.org/t/explicitly-naming-variables-and-blocks-in-trace/8515 "2021-12-01T03:26:20Z")

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I have been looking at traces (IOSSReader and ExodusIIReader), and both explicitly set variables and blocks. However, this is both redundant and not necessary, as the reader turns them all on by default. Here is the co…

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## [Segmentation Fault when no keyword arguments are passed](https://discourse.paraview.org/t/segmentation-fault-when-no-keyword-arguments-are-passed/8469)

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**Author:** [@theodorebaltis](https://discourse.paraview.org/u/theodorebaltis)\
**Replies:** 3\
**Last updated:** [November 30, 2021, 7:55pm UTC](https://discourse.paraview.org/t/segmentation-fault-when-no-keyword-arguments-are-passed/8469 "2021-11-30T19:55:45Z")

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When creating a source/filter in Python, a segmentation fault occurs if you do not pass any keyword arguments like: r = XDMFReader() or c = Clip() Sometimes I think in VTK-terms where you can initialize a class and t…

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## [Loading multiple files for a custom Python reader](https://discourse.paraview.org/t/loading-multiple-files-for-a-custom-python-reader/8452)

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**Author:** [@David\_Cortes](https://discourse.paraview.org/u/David_Cortes)\
**Replies:** 6\
**Last updated:** [November 30, 2021, 3:13pm UTC](https://discourse.paraview.org/t/loading-multiple-files-for-a-custom-python-reader/8452 "2021-11-30T15:13:36Z")

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Hi, I’m writing a reader in Python based on this documentation util.vtkAlgorithm Module — ParaView/Python 5.9.1 documentation How can I load multiple files and assign them a timestep as Paraview does automatically when l…

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## [Plot on Intersection Curves yields incorrect line plot](https://discourse.paraview.org/t/plot-on-intersection-curves-yields-incorrect-line-plot/8471)

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**Author:** [@gnikit](https://discourse.paraview.org/u/gnikit)\
**Replies:** 1\
**Last updated:** [November 24, 2021, 12:55am UTC](https://discourse.paraview.org/t/plot-on-intersection-curves-yields-incorrect-line-plot/8471 "2021-11-24T00:55:37Z")

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I am trying to get the line plot of the intersection of spherical shell with a plane along the z-axis using a PlotOnIntersectionCurves filter but the resulting line chart is vastly different from when the data are extrac…

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## [Error with hdf5 building Paraview superbuild in MacOS Monterey with M1 chip](https://discourse.paraview.org/t/error-with-hdf5-building-paraview-superbuild-in-macos-monterey-with-m1-chip/8399)

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**Author:** [@majo\_vlas](https://discourse.paraview.org/u/majo_vlas)\
**Replies:** 3\
**Last updated:** [November 18, 2021, 6:33am UTC](https://discourse.paraview.org/t/error-with-hdf5-building-paraview-superbuild-in-macos-monterey-with-m1-chip/8399 "2021-11-18T06:33:39Z")

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I built Paraview superbuild a couple of years ago in an old mac and now I tried to replicate the process in the new Mac with the M1 chip and I have an error with the library hdf5 after executing make in the terminal. I d…

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## [Failing to build superbuild VS2019](https://discourse.paraview.org/t/failing-to-build-superbuild-vs2019/8389)

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**Author:** [@totte\_karlsson](https://discourse.paraview.org/u/totte_karlsson)\
**Replies:** 12\
**Last updated:** [November 16, 2021, 1:41am UTC](https://discourse.paraview.org/t/failing-to-build-superbuild-vs2019/8389 "2021-11-16T01:41:45Z")

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Hello, I’m new to Paraview and are trying to build the superbuild on a Windows 10 computer using Ninja and VS2019. I managed to build Paraview, with no GUI as I found out, following the instructions here. Opening the C…

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## [plot over line bug in 5.10rc1](https://discourse.paraview.org/t/plot-over-line-bug-in-5-10rc1/8382)

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**Author:** [@gbug](https://discourse.paraview.org/u/gbug)\
**Replies:** 8\
**Last updated:** [November 15, 2021, 7:42am UTC](https://discourse.paraview.org/t/plot-over-line-bug-in-5-10rc1/8382 "2021-11-15T07:42:47Z")

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Hi! I’ve noticed a different behavior of Plot Over Line filter in 5.9 and 5.10rc1 when plotting data near the boundary with different resolutions. Hope two figures below show the point. The original data is 2D array (vtr…

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## [ParaView-5.10.0-RC1 Freeze on Monterey Intel Mac](https://discourse.paraview.org/t/paraview-5-10-0-rc1-freeze-on-monterey-intel-mac/8375)

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**Author:** [@jsevic](https://discourse.paraview.org/u/jsevic)\
**Replies:** 2\
**Last updated:** [November 12, 2021, 9:26am UTC](https://discourse.paraview.org/t/paraview-5-10-0-rc1-freeze-on-monterey-intel-mac/8375 "2021-11-12T09:26:34Z")

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I installed ParaView-5.10.0-RC1 on my Mac and at first it appeared to run, although the graphics seemed corrupted. I have used booth both new .e files and archived .e files, and these open on my older version of PV. No…

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## [Problem with building EGL version of ParaView 5.10.0-RC1](https://discourse.paraview.org/t/problem-with-building-egl-version-of-paraview-5-10-0-rc1/8223)

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**Author:** [@joeh](https://discourse.paraview.org/u/joeh)\
**Replies:** 1\
**Last updated:** [November 10, 2021, 6:25pm UTC](https://discourse.paraview.org/t/problem-with-building-egl-version-of-paraview-5-10-0-rc1/8223 "2021-11-10T18:25:39Z")

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There seems to be a problem with building the EGL version of ParaView 5.10.0-RC1. Where the EGL include directory that is found by the superbuild does not get passed to the paraview build that requires it. The superbui…

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## [Filter with defaults for input array selection](https://discourse.paraview.org/t/filter-with-defaults-for-input-array-selection/8343)

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**Author:** [@vadimcn](https://discourse.paraview.org/u/vadimcn)\
**Replies:** 3\
**Last updated:** [November 10, 2021, 8:58am UTC](https://discourse.paraview.org/t/filter-with-defaults-for-input-array-selection/8343 "2021-11-10T08:58:10Z")

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Hi, I’d like to create a Python filter that transforms point coordinates of the input dataset using arrays from a secondary dataset. The secondary dataset is virtually always the same, and I’d like my plugin to have a…

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