# ParaView Support

**URL:** https://discourse.paraview.org/c/paraview-support/7.md?page=211

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

**Page:** 212

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## [Line integral convolution with normalization disabled](https://discourse.paraview.org/t/line-integral-convolution-with-normalization-disabled/1894)

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**Author:** [@Simon\_W](https://discourse.paraview.org/u/Simon_W)\
**Replies:** 2\
**Last updated:** [May 22, 2019, 10:01am UTC](https://discourse.paraview.org/t/line-integral-convolution-with-normalization-disabled/1894 "2019-05-22T10:01:01Z")

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Hey everyone, I’m new here! I am trying to generate a section view using Surface LIC with vector normalisation disabled. The effect I’m going for is in the linked figure on the left. I uncheck the Normalize Vectors box…

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## [longitude modulo not working on spherical plot](https://discourse.paraview.org/t/longitude-modulo-not-working-on-spherical-plot/1901)

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**Author:** [@mark\_collier](https://discourse.paraview.org/u/mark_collier)\
**Replies:** 0\
**Last updated:** [May 22, 2019, 6:05am UTC](https://discourse.paraview.org/t/longitude-modulo-not-working-on-spherical-plot/1901 "2019-05-22T06:05:36Z")

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Hi, I am mainly using netCDF data and have had mostly good success. I modify a netCDF file to have what I think is the best CF conventions, especially the bounds variables to ensure that paraview understands that the dat…

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## [Visualize rotating cubes with rounded corners](https://discourse.paraview.org/t/visualize-rotating-cubes-with-rounded-corners/1885)

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**Author:** [@anthony](https://discourse.paraview.org/u/anthony)\
**Replies:** 1\
**Last updated:** [May 22, 2019, 8:34am UTC](https://discourse.paraview.org/t/visualize-rotating-cubes-with-rounded-corners/1885 "2019-05-22T08:34:42Z")

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Hi! I’m simulating a problem involving rigid-body rotations. Specifically, I have two cubes with rounded corners colliding with each other. Knowing their center-of-gravity (x,y,z) and orientation (a,b,c), how to visuali…

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## [Setting a different title for each frame in an animation](https://discourse.paraview.org/t/setting-a-different-title-for-each-frame-in-an-animation/1899)

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**Author:** [@bqp](https://discourse.paraview.org/u/bqp)\
**Replies:** 1\
**Last updated:** [May 22, 2019, 3:35am UTC](https://discourse.paraview.org/t/setting-a-different-title-for-each-frame-in-an-animation/1899 "2019-05-22T03:35:58Z")

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I have a folder of legacy VTK files that are enumerated as file\_0000.vtk, file\_0001.vtk, and so on. I am interested in creating an animation using this series of files, and I already know how to do this just by opening …

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## [PV-compilation problems with libSM and uuid](https://discourse.paraview.org/t/pv-compilation-problems-with-libsm-and-uuid/884)

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**Author:** [@gosia](https://discourse.paraview.org/u/gosia)\
**Replies:** 18\
**Last updated:** [May 21, 2019, 7:35am UTC](https://discourse.paraview.org/t/pv-compilation-problems-with-libsm-and-uuid/884 "2019-05-21T07:35:20Z")

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hi, i’m trying to compile paraview on ubuntu 18.04; it is built with: CMAKE\_BUILD\_TYPE=Release CMAKE\_INSTALL\_PREFIX=/usr/local/ PARAVIEW\_ENABLE\_PYTHON=ON PARAVIEW\_INSTALL\_DEVELOPMENT\_FILES=ON in the consecutive comp…

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## [Change value of cell array based on selected cell](https://discourse.paraview.org/t/change-value-of-cell-array-based-on-selected-cell/1888)

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**Author:** [@anigiss](https://discourse.paraview.org/u/anigiss)\
**Replies:** 0\
**Last updated:** [May 20, 2019, 2:36pm UTC](https://discourse.paraview.org/t/change-value-of-cell-array-based-on-selected-cell/1888 "2019-05-20T14:36:56Z")

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Hello guys, I have an int cell array (e.g., label) on my polygonal mesh data (.vtp), but some cells(triangles) have wrong label. For example, CellID=0 should be label “1”, but it is label “0” now. Is there a way that I…

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## [Post build error with vtkRenderingOpenGL2-pv5.6.dll](https://discourse.paraview.org/t/post-build-error-with-vtkrenderingopengl2-pv5-6-dll/1863)

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**Author:** [@tt\_wai\_mcvey](https://discourse.paraview.org/u/tt_wai_mcvey)\
**Replies:** 4\
**Last updated:** [May 20, 2019, 12:55pm UTC](https://discourse.paraview.org/t/post-build-error-with-vtkrenderingopengl2-pv5-6-dll/1863 "2019-05-20T12:55:06Z")

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I am attempting to build Paraview 5.6.0. The build is successful but when trying to launch the executable I get the following exception: Exception thrown at 0x000007FEC7DF656E (vtkRenderingOpenGL2-pv5.6.dll) in paraview…

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## [failure to compile vtkmpi4py in PV5.6.0](https://discourse.paraview.org/t/failure-to-compile-vtkmpi4py-in-pv5-6-0/1876)

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**Author:** [@jfavre](https://discourse.paraview.org/u/jfavre)\
**Replies:** 3\
**Last updated:** [May 20, 2019, 10:50am UTC](https://discourse.paraview.org/t/failure-to-compile-vtkmpi4py-in-pv5-6-0/1876 "2019-05-20T10:50:07Z")

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I have switched desktop to a newer machine, gcc version 8.3.0 (Ubuntu 8.3.0-6ubuntu1) turning on MPI, I can no longer compile with the following failure: /usr/bin/cc -DMPICH\_SKIP\_MPICXX -DOMPI\_SKIP\_MPICXX -DPyMPI\_MISSI…

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## [Embedding PyQt into a custom python filter](https://discourse.paraview.org/t/embedding-pyqt-into-a-custom-python-filter/1867)

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**Author:** [@e-kolosov](https://discourse.paraview.org/u/e-kolosov)\
**Replies:** 3\
**Last updated:** [May 20, 2019, 7:09am UTC](https://discourse.paraview.org/t/embedding-pyqt-into-a-custom-python-filter/1867 "2019-05-20T07:09:05Z")

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Hello. Can i use widgets from PyQt into a custom python filter inherited from VTKPythonAlgorithmBase? I’ve created a simple example. It show a QDialog but don’t process mouse events on button. Thanks in advance. test\_…

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## [How to change axis value?](https://discourse.paraview.org/t/how-to-change-axis-value/1878)

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**Author:** [@ZiweiWu](https://discourse.paraview.org/u/ZiweiWu)\
**Replies:** 0\
**Last updated:** [May 18, 2019, 5:08am UTC](https://discourse.paraview.org/t/how-to-change-axis-value/1878 "2019-05-18T05:08:50Z")

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Hi all, Currently I’m doing some 3 dimension visualization with Paraview, the data object got 14 layers on the z-axis, so in the render view the z-axis value was from 1 to 14. But in fact, each layer represents a height…

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## [Help getting CSV files of spheres to work with Delaunay 3D](https://discourse.paraview.org/t/help-getting-csv-files-of-spheres-to-work-with-delaunay-3d/1818)

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**Author:** [@Diepferd](https://discourse.paraview.org/u/Diepferd)\
**Replies:** 5\
**Last updated:** [May 17, 2019, 8:59pm UTC](https://discourse.paraview.org/t/help-getting-csv-files-of-spheres-to-work-with-delaunay-3d/1818 "2019-05-17T20:59:53Z")

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Hey I have been working on generating a solid sphere based on multiple CSV files (+10) with a lot of rows /data points(16000+ for each CSV file). The CSV files contain 4 variables X,Y,Z and a Value. Each CSV file repre…

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## [combining points and gemotetry into a single grid](https://discourse.paraview.org/t/combining-points-and-gemotetry-into-a-single-grid/1877)

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**Author:** [@marco\_accardo](https://discourse.paraview.org/u/marco_accardo)\
**Replies:** 0\
**Last updated:** [May 17, 2019, 8:29pm UTC](https://discourse.paraview.org/t/combining-points-and-gemotetry-into-a-single-grid/1877 "2019-05-17T20:29:55Z")

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I have been able to import a pointstable (data values) into paraview and a techplot file (geometry) into paraview so two nodes in my pipeline. I am interested in merging the two together so that I can create contours ont…

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## [sqlite3 missing dll's](https://discourse.paraview.org/t/sqlite3-missing-dlls/1859)

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**Author:** [@marco\_accardo](https://discourse.paraview.org/u/marco_accardo)\
**Replies:** 2\
**Last updated:** [May 17, 2019, 8:24pm UTC](https://discourse.paraview.org/t/sqlite3-missing-dlls/1859 "2019-05-17T20:24:39Z")

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I tried loading the python module from a paraview python shell and it failed. Upon investigation the sqlite3 support dll’s are missing. Hopefully in the next build these files can be included. Python 2.7.15 (defa…

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## [New Starter Help Please](https://discourse.paraview.org/t/new-starter-help-please/1854)

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**Author:** [@mcrossleyuk](https://discourse.paraview.org/u/mcrossleyuk)\
**Replies:** 3\
**Last updated:** [May 17, 2019, 6:25am UTC](https://discourse.paraview.org/t/new-starter-help-please/1854 "2019-05-17T06:25:51Z")

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I’m brand new to ParaView and had great response from the software that allowed me to understand and present my FreeCAD CFD observations. I’m now needing a little more complication and after following a number of your tu…

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## [Paraview installation error in Linux subsystem windows 10](https://discourse.paraview.org/t/paraview-installation-error-in-linux-subsystem-windows-10/1381)

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**Author:** [@Sreekar\_Reddy](https://discourse.paraview.org/u/Sreekar_Reddy)\
**Replies:** 5\
**Last updated:** [May 16, 2019, 4:24pm UTC](https://discourse.paraview.org/t/paraview-installation-error-in-linux-subsystem-windows-10/1381 "2019-05-16T16:24:22Z")

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Hi I’m a newbie at Ubuntu and terminal programming. I’ve installed Ubuntu as a subsystem in windows 10 for OpenFOAM. I’ve been able to install OpenFOAM successfully but paraview is not installing in any way. I tried rh…

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## [Nightly 5.6.0 1408 seems to fail to load OpenFOAM polyhedral mesh](https://discourse.paraview.org/t/nightly-5-6-0-1408-seems-to-fail-to-load-openfoam-polyhedral-mesh/1727)

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**Author:** [@gridley](https://discourse.paraview.org/u/gridley)\
**Replies:** 11\
**Last updated:** [May 16, 2019, 3:52pm UTC](https://discourse.paraview.org/t/nightly-5-6-0-1408-seems-to-fail-to-load-openfoam-polyhedral-mesh/1727 "2019-05-16T15:52:17Z")

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Hi all, I’ve recently tried the second latest nightly build of paraview, and found it to not successfully work on OpenFOAM polyhedral meshes. It seems to work on a problem of mine I ran with hexahedral cells. When I loa…

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## [Superbuild with Anaconda Python 3.7.1](https://discourse.paraview.org/t/superbuild-with-anaconda-python-3-7-1/1391)

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**Author:** [@TimJim](https://discourse.paraview.org/u/TimJim)\
**Replies:** 31\
**Last updated:** [May 16, 2019, 8:43am UTC](https://discourse.paraview.org/t/superbuild-with-anaconda-python-3-7-1/1391 "2019-05-16T08:43:08Z")

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Hi, I’m attempting to build the Paraview 5.6 superbuild with Python 3 so that I can use PVPython with my existing code. I seem to be getting an issue with ‘undefined references’ similar to: …/lib/libvtkWrappingPython37C…

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## [Parallel reading/visualization of vtu files](https://discourse.paraview.org/t/parallel-reading-visualization-of-vtu-files/1856)

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**Author:** [@Niklas](https://discourse.paraview.org/u/Niklas)\
**Replies:** 3\
**Last updated:** [May 15, 2019, 5:12pm UTC](https://discourse.paraview.org/t/parallel-reading-visualization-of-vtu-files/1856 "2019-05-15T17:12:16Z")

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Hi, I have a large irregular grid that I can only read in single threaded. I thought that storing it as vtu or pvtu would later allow me to read in and visualize the data in parallel, but it does not. I do see all the p…

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## [Default Expected a ')' while reading binaryBlock, found on line 20 an error](https://discourse.paraview.org/t/default-expected-a-while-reading-binaryblock-found-on-line-20-an-error/1830)

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**Author:** [@DanieleC](https://discourse.paraview.org/u/DanieleC)\
**Replies:** 4\
**Last updated:** [May 15, 2019, 4:35pm UTC](https://discourse.paraview.org/t/default-expected-a-while-reading-binaryblock-found-on-line-20-an-error/1830 "2019-05-15T16:35:32Z")

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Hi everyone I am working wit ParaView in order to analyse the result af a simulation in Open Foam by using Ubuntu 18.10. The simulation was done with HPC ( High Performance Computer, basically a super computer). I would…

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## [Slow Paraview Performance with version 4.3.1 and syncIO plugin](https://discourse.paraview.org/t/slow-paraview-performance-with-version-4-3-1-and-syncio-plugin/1858)

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**Author:** [@mdzimmer](https://discourse.paraview.org/u/mdzimmer)\
**Replies:** 1\
**Last updated:** [May 15, 2019, 7:44am UTC](https://discourse.paraview.org/t/slow-paraview-performance-with-version-4-3-1-and-syncio-plugin/1858 "2019-05-15T07:44:29Z")

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Hello, My research group uses paraview v4.3.1 with a syncIO file format reader plugin. We used to use v3.14 but we upgraded file formats to syncIO and it was necessary to switch Paraview versions as well. Unfortunately,…

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## [Programmable filter: integrate variables/attributes](https://discourse.paraview.org/t/programmable-filter-integrate-variables-attributes/1852)

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**Author:** [@MiguelAngelAGUIRRE](https://discourse.paraview.org/u/MiguelAngelAGUIRRE)\
**Replies:** 2\
**Last updated:** [May 14, 2019, 3:38pm UTC](https://discourse.paraview.org/t/programmable-filter-integrate-variables-attributes/1852 "2019-05-14T15:38:56Z")

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Hello! I would like to know if it is possible to integrate the input variables by using a Programmable Filter. I found that a so-called “vtkIntegrateAttributes” exists but I could not find an example explaining how to u…

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## [Does ParaView support vthb files?](https://discourse.paraview.org/t/does-paraview-support-vthb-files/1815)

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**Author:** [@wascott](https://discourse.paraview.org/u/wascott)\
**Replies:** 5\
**Last updated:** [May 14, 2019, 3:24pm UTC](https://discourse.paraview.org/t/does-paraview-support-vthb-files/1815 "2019-05-14T15:24:38Z")

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It appears ParaView doesn’t support vthb files, which I believe is a vtk format. Am I wrong? Should vthb files be supported? Thanks, Alan

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## [Programmable filter: get arrays from vtkCellDataToPointData](https://discourse.paraview.org/t/programmable-filter-get-arrays-from-vtkcelldatatopointdata/1832)

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**Author:** [@MiguelAngelAGUIRRE](https://discourse.paraview.org/u/MiguelAngelAGUIRRE)\
**Replies:** 4\
**Last updated:** [May 14, 2019, 12:09pm UTC](https://discourse.paraview.org/t/programmable-filter-get-arrays-from-vtkcelldatatopointdata/1832 "2019-05-14T12:09:06Z")

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Hello, I am using a programmable filter capable of reading cell centered data. It converts some arrays from cell data to point data and then it performs some calculations with the new point-based data (see code below). …

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## [How the ArraySelectionDomain works in PV](https://discourse.paraview.org/t/how-the-arrayselectiondomain-works-in-pv/1847)

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**Author:** [@Haocheng\_Liu](https://discourse.paraview.org/u/Haocheng_Liu)\
**Replies:** 1\
**Last updated:** [May 14, 2019, 7:41am UTC](https://discourse.paraview.org/t/how-the-arrayselectiondomain-works-in-pv/1847 "2019-05-14T07:41:52Z")

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Hi, I’m trying to understand how ArraySelectionDomain works in PV and what functions I need to implement in my reader so that I can use this property( Drop Down List with Values from Input File). However I cannot find a …

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## [Resampling of multiple Planes](https://discourse.paraview.org/t/resampling-of-multiple-planes/1849)

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**Author:** [@ste](https://discourse.paraview.org/u/ste)\
**Replies:** 0\
**Last updated:** [May 13, 2019, 6:13pm UTC](https://discourse.paraview.org/t/resampling-of-multiple-planes/1849 "2019-05-13T18:13:14Z")

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Hello everyone, I have data on several x,y and z-planes on an irregularly sized grid exported to Ensight format and I would like to resample or bin the data on to a regularly sized grid. I can roughly get what I want u…

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## [This RenderView will always save as a blue background even when a WhiteBackground is selected?](https://discourse.paraview.org/t/this-renderview-will-always-save-as-a-blue-background-even-when-a-whitebackground-is-selected/1800)

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**Author:** [@shuhao](https://discourse.paraview.org/u/shuhao)\
**Replies:** 3\
**Last updated:** [May 13, 2019, 8:11am UTC](https://discourse.paraview.org/t/this-renderview-will-always-save-as-a-blue-background-even-when-a-whitebackground-is-selected/1800 "2019-05-13T08:11:19Z")

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Through some sort of unknown manipulation, I’ve ended up with a PVSM that always produces a the default blue background when saving a screenshot, even when I select the WhiteBackground option. I noted that if I recreate…

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## [Python calculator difference between two datasets is wrong](https://discourse.paraview.org/t/python-calculator-difference-between-two-datasets-is-wrong/1823)

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**Author:** [@wascott](https://discourse.paraview.org/u/wascott)\
**Replies:** 2\
**Last updated:** [May 10, 2019, 11:16pm UTC](https://discourse.paraview.org/t/python-calculator-difference-between-two-datasets-is-wrong/1823 "2019-05-10T23:16:16Z")

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I have a user that is trying to subtract two datasets. Say one dataset is a sphere on a stand, and the second dataset is a sphere on a different stand. I turn off the blocks for the stand, and have only a sphere per da…

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## [Transparent objects not showing up sometimes](https://discourse.paraview.org/t/transparent-objects-not-showing-up-sometimes/1824)

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**Author:** [@shuhao](https://discourse.paraview.org/u/shuhao)\
**Replies:** 1\
**Last updated:** [May 10, 2019, 6:34pm UTC](https://discourse.paraview.org/t/transparent-objects-not-showing-up-sometimes/1824 "2019-05-10T18:34:59Z")

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I currently have an issue where if I set a filter (slice and contours thus far) to be represented with transparency (opacity != 1), the final object might not show up in the render view. Sometimes, if I rotate to the rig…

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## ["nullptr" is undefined](https://discourse.paraview.org/t/nullptr-is-undefined/1821)

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**Author:** [@uturuncoglu](https://discourse.paraview.org/u/uturuncoglu)\
**Replies:** 1\
**Last updated:** [May 10, 2019, 5:53pm UTC](https://discourse.paraview.org/t/nullptr-is-undefined/1821 "2019-05-10T17:53:07Z")

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I am trying to upgrade ParaView version of my co-processing code from 5.4.1 to 5.6.0. 5.4.1 is fine and compiles without any problem but when i try to use ParaView 5.6.0, i am getting following error error: identifier “…

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## [Access Frame Buffer from paraview.simple that I would write from SaveScreenshot()](https://discourse.paraview.org/t/access-frame-buffer-from-paraview-simple-that-i-would-write-from-savescreenshot/1814)

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**Author:** [@patchett2002](https://discourse.paraview.org/u/patchett2002)\
**Replies:** 1\
**Last updated:** [May 10, 2019, 2:28pm UTC](https://discourse.paraview.org/t/access-frame-buffer-from-paraview-simple-that-i-would-write-from-savescreenshot/1814 "2019-05-10T14:28:27Z")

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Hello, I’m trying to access the image data from the Frame Buffer using paraview.simple so that I can analyze (calculate various metrics) the image developed in paraview.simple without utilizing the disk. Does anybody kn…

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