# ParaView Support

**URL:** https://discourse.paraview.org/c/paraview-support/7.md?page=137

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**Page:** 138

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## [Export Vectorial images in paraview 5.8.1](https://discourse.paraview.org/t/export-vectorial-images-in-paraview-5-8-1/7612)

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**Author:** [@trailer](https://discourse.paraview.org/u/trailer)\
**Replies:** 2\
**Last updated:** [July 15, 2021, 10:28am UTC](https://discourse.paraview.org/t/export-vectorial-images-in-paraview-5-8-1/7612 "2021-07-15T10:28:54Z")

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Hello, I would like to export the mesh of my domain as a vectorial image. With paraview 5.8.1 if I export the mesh as a svg image I get: Upon zooming the image quality gets very poor. I downloaded an old version of…

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## [Generating line plots for each time step separately](https://discourse.paraview.org/t/generating-line-plots-for-each-time-step-separately/7558)

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**Author:** [@Lukas1](https://discourse.paraview.org/u/Lukas1)\
**Replies:** 1\
**Last updated:** [July 15, 2021, 7:06am UTC](https://discourse.paraview.org/t/generating-line-plots-for-each-time-step-separately/7558 "2021-07-15T07:06:13Z")

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Dear community, I am currently working on some sort of specialized export. Basically, I need PlotOverLine at different locations based on the time step. I am planing to provide an array and change the location of PlotO…

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## [pvtr files don't load underlying filescorrectly](https://discourse.paraview.org/t/pvtr-files-dont-load-underlying-filescorrectly/7613)

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**Author:** [@wascott](https://discourse.paraview.org/u/wascott)\
**Replies:** 1\
**Last updated:** [July 15, 2021, 12:45am UTC](https://discourse.paraview.org/t/pvtr-files-dont-load-underlying-filescorrectly/7613 "2021-07-15T00:45:02Z")

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pvtr files are not loading underlying .vtr files correctly. Or, of course, I’m messed up and confused! I wrote up a git bug here: https://gitlab.kitware.com/paraview/paraview/-/issues/20842. Any ideas? Note this wor…

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## [Automatically Refreshing Pipeline from Filter Plugin Paraview-v5.8.1](https://discourse.paraview.org/t/automatically-refreshing-pipeline-from-filter-plugin-paraview-v5-8-1/7504)

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**Author:** [@anthomas](https://discourse.paraview.org/u/anthomas)\
**Replies:** 2\
**Last updated:** [July 14, 2021, 10:04am UTC](https://discourse.paraview.org/t/automatically-refreshing-pipeline-from-filter-plugin-paraview-v5-8-1/7504 "2021-07-14T10:04:34Z")

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I have a paraview plugin that generates a mesh, the user can manually go to into the pipeline and hit refresh to view the mesh. I am wondering if there is a way to automatically refresh the filter’s parent file in the pi…

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## [ParaView 5.8 some Icons are invisible](https://discourse.paraview.org/t/paraview-5-8-some-icons-are-invisible/3756)

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**Author:** [@ymjia](https://discourse.paraview.org/u/ymjia)\
**Replies:** 10\
**Last updated:** [July 13, 2021, 6:09pm UTC](https://discourse.paraview.org/t/paraview-5-8-some-icons-are-invisible/3756 "2021-07-13T18:09:08Z")

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Hi guys, I have built an executable from newest 5.8 release source, every thing is ok but when I open the executable in the installed dir, some of the icons are invisble while time step/ camera control icons are normal.…

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## [Problems loading Material library under Ray Tracing](https://discourse.paraview.org/t/problems-loading-material-library-under-ray-tracing/7572)

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**Author:** [@erikm](https://discourse.paraview.org/u/erikm)\
**Replies:** 3\
**Last updated:** [July 13, 2021, 8:48pm UTC](https://discourse.paraview.org/t/problems-loading-material-library-under-ray-tracing/7572 "2021-07-13T20:48:59Z")

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In v5.9, I am getting the following warning when trying to apply material under Ray Tracing when using OSPRay pathtracer. This is despite me manually loading the ospray\_mats.json file in the materials directory as well a…

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## [Programmable Filter: if else statment](https://discourse.paraview.org/t/programmable-filter-if-else-statment/7514)

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**Author:** [@CSMDakota](https://discourse.paraview.org/u/CSMDakota)\
**Replies:** 2\
**Last updated:** [July 12, 2021, 9:30pm UTC](https://discourse.paraview.org/t/programmable-filter-if-else-statment/7514 "2021-07-12T21:30:39Z")

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I’m trying to implement at programmable filter in which I read in an existing array from an imported solution, then calculate a new array based on an “if” “else” statement. Specifically if a nodal value is greater than…

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## [How to set colors fo Polydata for a custom reader?](https://discourse.paraview.org/t/how-to-set-colors-fo-polydata-for-a-custom-reader/7584)

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**Author:** [@lyz](https://discourse.paraview.org/u/lyz)\
**Replies:** 2\
**Last updated:** [July 12, 2021, 12:38pm UTC](https://discourse.paraview.org/t/how-to-set-colors-fo-polydata-for-a-custom-reader/7584 "2021-07-12T12:38:46Z")

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I am implementing a custom reader. The reader is derived from vtkAbstractPolyDataReader. When I implement the RequestData function, I specify the points and polys, and I can get the correct geometric. For now, I want set…

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## [mpiexec utility](https://discourse.paraview.org/t/mpiexec-utility/7570)

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**Author:** [@Captain\_Convergence](https://discourse.paraview.org/u/Captain_Convergence)\
**Replies:** 6\
**Last updated:** [July 8, 2021, 1:38pm UTC](https://discourse.paraview.org/t/mpiexec-utility/7570 "2021-07-08T13:38:27Z")

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Hi everyone! I am having problems when using parallel post-processing with the mpiexec utility. The issue is that I cannot make paraview plot graphs when using multiple CPUs. At the beginning it wasn’t a big problem bec…

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## [Obtaining the normal vector of the camera view](https://discourse.paraview.org/t/obtaining-the-normal-vector-of-the-camera-view/7568)

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**Author:** [@Xabier\_Morales\_Ferez](https://discourse.paraview.org/u/Xabier_Morales_Ferez)\
**Replies:** 4\
**Last updated:** [July 8, 2021, 1:36pm UTC](https://discourse.paraview.org/t/obtaining-the-normal-vector-of-the-camera-view/7568 "2021-07-08T13:36:54Z")

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Good afternoon, I need to compute the cross-product between flow velocity values and a given direction and I would like to automatize the process if possible. The only workaround that I found at the moment is creating a…

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## [Point Arrays in the Information Panel](https://discourse.paraview.org/t/point-arrays-in-the-information-panel/7553)

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**Author:** [@gizem](https://discourse.paraview.org/u/gizem)\
**Replies:** 2\
**Last updated:** [July 8, 2021, 11:56am UTC](https://discourse.paraview.org/t/point-arrays-in-the-information-panel/7553 "2021-07-08T11:56:00Z")

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Hello, I am currently working on a h5part-file. I have problems with two Point Arrays listed in the Properties Panel: “uid\_1” and “uid\_2”, each of them representing the same particle: Now if I go to the Information …

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## [\[5.9.0\] Issue with OSPRAY backplate background tiling for high res screenshots](https://discourse.paraview.org/t/5-9-0-issue-with-ospray-backplate-background-tiling-for-high-res-screenshots/7567)

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**Author:** [@Vincent\_Rivola](https://discourse.paraview.org/u/Vincent_Rivola)\
**Replies:** 4\
**Last updated:** [July 7, 2021, 5:16pm UTC](https://discourse.paraview.org/t/5-9-0-issue-with-ospray-backplate-background-tiling-for-high-res-screenshots/7567 "2021-07-07T17:16:30Z")

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I am trying to generate a high resolution image using the OSPRAY path tracer. The background is using an image. When I try to save a screenshot larger than my layout resolution, the object itself is well rendered but th…

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## [Bad display for large dataset](https://discourse.paraview.org/t/bad-display-for-large-dataset/7562)

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**Author:** [@tbridel](https://discourse.paraview.org/u/tbridel)\
**Replies:** 15\
**Last updated:** [July 7, 2021, 3:37pm UTC](https://discourse.paraview.org/t/bad-display-for-large-dataset/7562 "2021-07-07T15:37:28Z")

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Hi everyone, Recently I have been working with this dataset : VTU :: restart\_00000000.vtu - Google Drive HDF5 + XDMF :: restart\_00000000.h5 - Google Drive + restart\_00000000.xdmf - Google Drive It’s large but not hug…

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## [calculation of certain parameters using PV filter for all the snapshots(dump file)](https://discourse.paraview.org/t/calculation-of-certain-parameters-using-pv-filter-for-all-the-snapshots-dump-file/7540)

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**Author:** [@deepakpawar2310](https://discourse.paraview.org/u/deepakpawar2310)\
**Replies:** 4\
**Last updated:** [July 6, 2021, 5:05pm UTC](https://discourse.paraview.org/t/calculation-of-certain-parameters-using-pv-filter-for-all-the-snapshots-dump-file/7540 "2021-07-06T17:05:19Z")

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(1) I need to calculate specific parameters using the PV filter (external ) to a particular snapshot (dump file), (2) store that variable, and (3) use the same filter for subsequent snapshots (for example, I have 400 …

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## [Color bar position resetting after hiding/un-hiding pipeline node](https://discourse.paraview.org/t/color-bar-position-resetting-after-hiding-un-hiding-pipeline-node/7554)

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**Author:** [@mbotto](https://discourse.paraview.org/u/mbotto)\
**Replies:** 1\
**Last updated:** [July 6, 2021, 4:31pm UTC](https://discourse.paraview.org/t/color-bar-position-resetting-after-hiding-un-hiding-pipeline-node/7554 "2021-07-06T16:31:38Z")

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Continuing the discussion from Multiple colorbar custom positions not honored: I read this topic from a few months ago which is similar to the question I have, but it doesn’t have any responses and my question is a bit d…

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## [Tracing Particles](https://discourse.paraview.org/t/tracing-particles/7555)

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**Author:** [@gizem](https://discourse.paraview.org/u/gizem)\
**Replies:** 4\
**Last updated:** [July 6, 2021, 10:05am UTC](https://discourse.paraview.org/t/tracing-particles/7555 "2021-07-06T10:05:23Z")

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Hello, I’ve been working on a set of particles, trying to trace specific ones. However, after a specific period of time the selected set of particles start changing, so instead of the originally selected particles, oth…

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## [ParaView failed to open OBJ with Texture](https://discourse.paraview.org/t/paraview-failed-to-open-obj-with-texture/7547)

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**Author:** [@jhz](https://discourse.paraview.org/u/jhz)\
**Replies:** 7\
**Last updated:** [July 5, 2021, 3:17pm UTC](https://discourse.paraview.org/t/paraview-failed-to-open-obj-with-texture/7547 "2021-07-05T15:17:29Z")

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Hello, I am trying to import an obj with texture to ParaView GUI. I followed this thread and created ParaView state file (pvsm) by running the python script in pvpython. When I run this script, it creates some vtp and js…

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## [Clip colours in a contour plot](https://discourse.paraview.org/t/clip-colours-in-a-contour-plot/7552)

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**Author:** [@Tobermory](https://discourse.paraview.org/u/Tobermory)\
**Replies:** 2\
**Last updated:** [July 5, 2021, 2:35pm UTC](https://discourse.paraview.org/t/clip-colours-in-a-contour-plot/7552 "2021-07-05T14:35:23Z")

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In the post-processing packages for commercial CFD codes, there is often a feature where you can “clip the colour scale” on a contour plot, so that values that are off the end of your defined legend scale are plotted as …

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## [Extract data from plane as a CSV file](https://discourse.paraview.org/t/extract-data-from-plane-as-a-csv-file/7548)

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**Author:** [@R\_Surya\_Narayan](https://discourse.paraview.org/u/R_Surya_Narayan)\
**Replies:** 14\
**Last updated:** [July 5, 2021, 1:12pm UTC](https://discourse.paraview.org/t/extract-data-from-plane-as-a-csv-file/7548 "2021-07-05T13:12:59Z")

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Hello everyone, I have a 3D time varying CFD dataset as binary files. I am able to visualize them in Paraview. However, I would like to know if there is a way to write data as a CSV/DAT file from a sliced plane.I have t…

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## [Change Color Palette in Python](https://discourse.paraview.org/t/change-color-palette-in-python/7549)

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**Author:** [@Msegade](https://discourse.paraview.org/u/Msegade)\
**Replies:** 1\
**Last updated:** [July 5, 2021, 1:12pm UTC](https://discourse.paraview.org/t/change-color-palette-in-python/7549 "2021-07-05T13:12:48Z")

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Hi, I’m trying to make a script to take several screenshots, the script works fine but I cannot change the Palette in the script. I can change the color palette to a predefined one through the LoadPalette function, but…

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## [Calculating y centroid of bubble(s) for interFoam bubble flow scenario](https://discourse.paraview.org/t/calculating-y-centroid-of-bubble-s-for-interfoam-bubble-flow-scenario/7543)

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**Author:** [@chw68014](https://discourse.paraview.org/u/chw68014)\
**Replies:** 1\
**Last updated:** [July 5, 2021, 7:16am UTC](https://discourse.paraview.org/t/calculating-y-centroid-of-bubble-s-for-interfoam-bubble-flow-scenario/7543 "2021-07-05T07:16:57Z")

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Hello, I’ve run a case using interFoam in OpenFOAM where five bubbles are released at the bottom of my domain at rest and allowed to rise. At a specific time step, I want to determine what the y-position of each bubble …

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## [Add Vector Cell Data in reader](https://discourse.paraview.org/t/add-vector-cell-data-in-reader/7508)

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**Author:** [@David\_Cortes](https://discourse.paraview.org/u/David_Cortes)\
**Replies:** 1\
**Last updated:** [July 4, 2021, 3:07am UTC](https://discourse.paraview.org/t/add-vector-cell-data-in-reader/7508 "2021-07-04T03:07:57Z")

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Hello, I’m trying to write a new reader using a library of mine called oommfpy. I have cell data in the form of vectors. When I write my VTK files I specify this data as VECTORS m double. How can I do this in the reader?…

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## [Plot over a Contour Line](https://discourse.paraview.org/t/plot-over-a-contour-line/7531)

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**Author:** [@garciahahn](https://discourse.paraview.org/u/garciahahn)\
**Replies:** 1\
**Last updated:** [July 4, 2021, 12:52am UTC](https://discourse.paraview.org/t/plot-over-a-contour-line/7531 "2021-07-04T00:52:57Z")

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Hi to the community! I am doing some research in droplets and I am using phase field methods to solve some droplets in a domain. To visualize I am using ParaView looking into the different fields of the system. My dropl…

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## [paraview 5.9](https://discourse.paraview.org/t/paraview-5-9/7539)

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**Author:** [@deepakpawar2310](https://discourse.paraview.org/u/deepakpawar2310)\
**Replies:** 4\
**Last updated:** [July 3, 2021, 2:23pm UTC](https://discourse.paraview.org/t/paraview-5-9/7539 "2021-07-03T14:23:41Z")

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I am using the 5.9.1 version, Issue is with the opacity option. A soon as I reduce the opacity, the whole model sort of achieving zero opacity. Not sure, whether it is an issue with the PV compilation. Any help/comme…

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## [Query on using paraview.simple.VortexCores](https://discourse.paraview.org/t/query-on-using-paraview-simple-vortexcores/7538)

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**Author:** [@vcn\_cfd](https://discourse.paraview.org/u/vcn_cfd)\
**Replies:** 4\
**Last updated:** [July 2, 2021, 6:47pm UTC](https://discourse.paraview.org/t/query-on-using-paraview-simple-vortexcores/7538 "2021-07-02T18:47:33Z")

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Hello, Could someone please tell me 1) what the inputs should be, and 2) How the parameter arguments are passed for the vortex cores function shown below: paraview.simple. VortexCores (\*input , \*\*params ) Also, is thi…

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## [Custom CSV Format with Two Different Field Lengths for Import](https://discourse.paraview.org/t/custom-csv-format-with-two-different-field-lengths-for-import/7516)

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**Author:** [@Joe\_Gorse](https://discourse.paraview.org/u/Joe_Gorse)\
**Replies:** 3\
**Last updated:** [July 2, 2021, 1:56pm UTC](https://discourse.paraview.org/t/custom-csv-format-with-two-different-field-lengths-for-import/7516 "2021-07-02T13:56:37Z")

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Greetings, I have CSV files with a 7 row pattern which constitutes one point in time. The first row is 6 fields. The second to the seventh row are 10 fields. This can go one for 10’s of megabytes. How can I teach Parav…

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## [Error when using the VCR buttons](https://discourse.paraview.org/t/error-when-using-the-vcr-buttons/7537)

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**Author:** [@gizem](https://discourse.paraview.org/u/gizem)\
**Replies:** 3\
**Last updated:** [July 2, 2021, 1:05pm UTC](https://discourse.paraview.org/t/error-when-using-the-vcr-buttons/7537 "2021-07-02T13:05:08Z")

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Hello, I get following error message whenever I use the VCR buttons in the toolbar section: Generic Warning: In /home/buildslave/dashboards/buildbot/paraview\_release-pvbinsdash-linux-shared-release\_superbuild/build/sup…

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## [How to run ParaView (including the binary release) using EGL on Windows](https://discourse.paraview.org/t/how-to-run-paraview-including-the-binary-release-using-egl-on-windows/7534)

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**Author:** [@Luis\_Carlos\_Carneiro](https://discourse.paraview.org/u/Luis_Carlos_Carneiro)\
**Replies:** 13\
**Last updated:** [July 2, 2021, 9:14am UTC](https://discourse.paraview.org/t/how-to-run-paraview-including-the-binary-release-using-egl-on-windows/7534 "2021-07-02T09:14:36Z")

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Dear All, I want to run Paraview (pvpython etc) in a headless server with a K80 but in windows. I need OpenGL. I suppose I need EGL. Can someone provide the links that instructs how to do that? Thanks in Advance, Luí…

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## [problem while loading NetCDF file in paraview 5.7.0](https://discourse.paraview.org/t/problem-while-loading-netcdf-file-in-paraview-5-7-0/7528)

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**Author:** [@Jagannath](https://discourse.paraview.org/u/Jagannath)\
**Replies:** 2\
**Last updated:** [July 2, 2021, 8:13am UTC](https://discourse.paraview.org/t/problem-while-loading-netcdf-file-in-paraview-5-7-0/7528 "2021-07-02T08:13:48Z")

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Hi all, I am using Paraview 5.7.0 and trying to visualize some .nc file (Data files can be found here: Dropbox - test\_paraview - Simplify your life). While loading these files I see 3 data file reader, 1.NetCDF CAM re…

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## [data visualization from netCDF file from BOUT++ code](https://discourse.paraview.org/t/data-visualization-from-netcdf-file-from-bout-code/6645)

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**Author:** [@Jagannath](https://discourse.paraview.org/u/Jagannath)\
**Replies:** 2\
**Last updated:** [July 1, 2021, 8:41pm UTC](https://discourse.paraview.org/t/data-visualization-from-netcdf-file-from-bout-code/6645 "2021-07-01T20:41:49Z")

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Hi, I want to use paraview to visualize the data from netCDF file (\*.nc format) from BOUT++ code. I am using the ParaView 5.7.0 version installed in my institute cluster. Output of \`ncdump -h BOUT.dmp.0.nc’ file is foll…

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