# ParaView Support

**URL:** https://discourse.paraview.org/c/paraview-support/7.md?page=127

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

**Page:** 128

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## [Interpolation/Kriging](https://discourse.paraview.org/t/interpolation-kriging/8273)

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**Author:** [@Victor\_Saouma](https://discourse.paraview.org/u/Victor_Saouma)\
**Replies:** 7\
**Last updated:** [October 29, 2021, 7:50am UTC](https://discourse.paraview.org/t/interpolation-kriging/8273 "2021-10-29T07:50:48Z")

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I have a complex unstructured mesh that I would like to shade with field measurements. However, those are at only select locations. They can be assigned to nodes or elements. Question: Is there a Paraview tool to interp…

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## [\[Virtualbox Debian\] Loguru caught a signal : SIGABRT](https://discourse.paraview.org/t/virtualbox-debian-loguru-caught-a-signal-sigabrt/6716)

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**Author:** [@Nuts](https://discourse.paraview.org/u/Nuts)\
**Replies:** 15\
**Last updated:** [October 28, 2021, 6:22pm UTC](https://discourse.paraview.org/t/virtualbox-debian-loguru-caught-a-signal-sigabrt/6716 "2021-10-28T18:22:16Z")

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Hi everyone, I’m new on gnu-linux, vm… I did’nt find any answer to my problem so I hope my question was not asked previously. The VM was built lats week : Oracle VM Virtual box Debian 9 64 bit 8 Go memory Display : …

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## [Update ExtractSelection filter in python](https://discourse.paraview.org/t/update-extractselection-filter-in-python/8279)

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**Author:** [@Hugo](https://discourse.paraview.org/u/Hugo)\
**Replies:** 1\
**Last updated:** [October 28, 2021, 3:35pm UTC](https://discourse.paraview.org/t/update-extractselection-filter-in-python/8279 "2021-10-28T15:35:47Z")

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Hello, I’m trying to update an ExtractSelection filter in python but I can’t figure out how to make it work. Here is an example of what I’m trying to do : from paraview.simple import \* from paraview.selection import \*…

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## [OSPRay pathtracer: How to get more vivid colors](https://discourse.paraview.org/t/ospray-pathtracer-how-to-get-more-vivid-colors/7951)

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**Author:** [@bastian](https://discourse.paraview.org/u/bastian)\
**Replies:** 4\
**Last updated:** [October 28, 2021, 1:13pm UTC](https://discourse.paraview.org/t/ospray-pathtracer-how-to-get-more-vivid-colors/7951 "2021-10-28T13:13:17Z")

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With the OSPRay pathtracer I am observing that surfaces are generally less saturated than the actual color they are painted with. I guess that this has to do with the color of the lighting, and that it could also be tac…

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## [OSPRay crash on startup.](https://discourse.paraview.org/t/ospray-crash-on-startup/6501)

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**Author:** [@wascott](https://discourse.paraview.org/u/wascott)\
**Replies:** 8\
**Last updated:** [October 28, 2021, 8:35am UTC](https://discourse.paraview.org/t/ospray-crash-on-startup/6501 "2021-10-28T08:35:55Z")

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I am having OSPRay/ possible VisRTD crashes on a new workstation. This is Linux. ParaView 5.9.0, paraview.org download. Crashes on initial startup. This issue does disappear when using the disable Catalyst and VisRTD…

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## [ParticlePath shows nothing](https://discourse.paraview.org/t/particlepath-shows-nothing/8278)

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**Author:** [@dipolarsight](https://discourse.paraview.org/u/dipolarsight)\
**Replies:** 0\
**Last updated:** [October 28, 2021, 8:00am UTC](https://discourse.paraview.org/t/particlepath-shows-nothing/8278 "2021-10-28T08:00:55Z")

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Hello, I tried to use ParticlePath as the way I used ParticleTracer: Input: my vetor field with 100 timesteps Seed Source: MaskPoints ParticleTracer works fine, but ParticlePath shows nothing. Did I use it wrong? Th…

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## [zero notation in X axis Use Custom Label](https://discourse.paraview.org/t/zero-notation-in-x-axis-use-custom-label/8277)

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**Author:** [@Gwang-Jin\_Lee](https://discourse.paraview.org/u/Gwang-Jin_Lee)\
**Replies:** 0\
**Last updated:** [October 28, 2021, 4:49am UTC](https://discourse.paraview.org/t/zero-notation-in-x-axis-use-custom-label/8277 "2021-10-28T04:49:08Z")

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Hello, I’am using Paraview 5.9. When I used “X axis Use Custom Label” in View \> Axis Grid to express zero coordinate, zero is expressed as “2.1781e-316”. How can I solve it? Thank you. Best regards, Gwang-Jin

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## [Quick count of weighted number of points inside grid cells](https://discourse.paraview.org/t/quick-count-of-weighted-number-of-points-inside-grid-cells/8187)

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**Author:** [@Fotos\_Stylianou](https://discourse.paraview.org/u/Fotos_Stylianou)\
**Replies:** 2\
**Last updated:** [October 27, 2021, 4:58pm UTC](https://discourse.paraview.org/t/quick-count-of-weighted-number-of-points-inside-grid-cells/8187 "2021-10-27T16:58:47Z")

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Hi All, I have a set of random points in 3D space and each one of them has a variable which describes its importance. I use the FastUniformGrid and Transform filter to generate a bounding grid for the points as belo…

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## [Linking issues with GLX for PV5.9 with EGL](https://discourse.paraview.org/t/linking-issues-with-glx-for-pv5-9-with-egl/8262)

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**Author:** [@robertsawko](https://discourse.paraview.org/u/robertsawko)\
**Replies:** 0\
**Last updated:** [October 26, 2021, 6:08pm UTC](https://discourse.paraview.org/t/linking-issues-with-glx-for-pv5-9-with-egl/8262 "2021-10-26T18:08:33Z")

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Hello, I am trying to build ParaView version 5.9.1 with EGL backend, parallel and Catalyst support. I am building in on x86 machine. My issue is very similar to this post, but the solution there was to set VTK\_USE\_X whi…

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## [How can I use the Netcdf time Annotation](https://discourse.paraview.org/t/how-can-i-use-the-netcdf-time-annotation/8227)

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**Author:** [@sitepan](https://discourse.paraview.org/u/sitepan)\
**Replies:** 4\
**Last updated:** [October 27, 2021, 8:52am UTC](https://discourse.paraview.org/t/how-can-i-use-the-netcdf-time-annotation/8227 "2021-10-27T08:52:43Z")

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Hi I’m working with netcdf files in paraview (version 5.9.1 windos) and I need to use the filter ‘NetCDF Time Annotation’, but i can not find it.

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## [OpitX pathtracer : Is 4 samples per pixel possible?](https://discourse.paraview.org/t/opitx-pathtracer-is-4-samples-per-pixel-possible/8265)

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**Author:** [@Gwang-Jin\_Lee](https://discourse.paraview.org/u/Gwang-Jin_Lee)\
**Replies:** 5\
**Last updated:** [October 27, 2021, 8:23am UTC](https://discourse.paraview.org/t/opitx-pathtracer-is-4-samples-per-pixel-possible/8265 "2021-10-27T08:23:36Z")

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Hello, I am using OptiX pathtracer in ParaView 5.9 version. When I use 3 samples per pixel, I obtained low quality. So I need 4 Samples per Pixel. But paraview aborted when I used 4 samples per pixel with the error …

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## [Access VTK filters in Programmable Filter](https://discourse.paraview.org/t/access-vtk-filters-in-programmable-filter/8263)

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**Author:** [@woodscn](https://discourse.paraview.org/u/woodscn)\
**Replies:** 1\
**Last updated:** [October 27, 2021, 6:19am UTC](https://discourse.paraview.org/t/access-vtk-filters-in-programmable-filter/8263 "2021-10-27T06:19:37Z")

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Is it possible to access VTK filters (not in Paraview) through the Paraview programmable filter interface?

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## [Stream Tracer grayed out](https://discourse.paraview.org/t/stream-tracer-grayed-out/4338)

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**Author:** [@M\_P](https://discourse.paraview.org/u/M_P)\
**Replies:** 12\
**Last updated:** [October 26, 2021, 3:53pm UTC](https://discourse.paraview.org/t/stream-tracer-grayed-out/4338 "2021-10-26T15:53:27Z")

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Hello, I am a novice at Paraview. I have a data file in Tecplot format at which I am struggling to plot streamlines. The Stream Tracer is actually grayed out. Any help is appreciated! Thanksextrafine\_res\_501.dat (139.…

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## [How to set Refinemet in SPHVolumeInterpolator in PvPython](https://discourse.paraview.org/t/how-to-set-refinemet-in-sphvolumeinterpolator-in-pvpython/8245)

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**Author:** [@JOJO](https://discourse.paraview.org/u/JOJO)\
**Replies:** 1\
**Last updated:** [October 26, 2021, 2:59pm UTC](https://discourse.paraview.org/t/how-to-set-refinemet-in-sphvolumeinterpolator-in-pvpython/8245 "2021-10-26T14:59:28Z")

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I found the volume refinement is important on SPHVolumeInterpolation. And I can set it easily in GUI. But I can not find this in both the guide and script tracer. Thus, I’d like to ask if there any functions in pvPyho…

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## [Allow selecting only some specific fields to use for "Plot Data Over Time" filter](https://discourse.paraview.org/t/allow-selecting-only-some-specific-fields-to-use-for-plot-data-over-time-filter/8253)

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**Author:** [@ANON1](https://discourse.paraview.org/u/ANON1)\
**Replies:** 0\
**Last updated:** [October 25, 2021, 2:17pm UTC](https://discourse.paraview.org/t/allow-selecting-only-some-specific-fields-to-use-for-plot-data-over-time-filter/8253 "2021-10-25T14:17:10Z")

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Hello, I am using the Plot Data Over Time filter in Paraview to post-process an OpenFOAM case with many fields and time steps. The problem is that it takes a very long time. I have seen this thread. But I think it is no…

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## [Slice in surface view created from extracted surface not working](https://discourse.paraview.org/t/slice-in-surface-view-created-from-extracted-surface-not-working/8252)

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**Author:** [@Frantisek\_Prinz](https://discourse.paraview.org/u/Frantisek_Prinz)\
**Replies:** 0\
**Last updated:** [October 25, 2021, 2:07pm UTC](https://discourse.paraview.org/t/slice-in-surface-view-created-from-extracted-surface-not-working/8252 "2021-10-25T14:07:25Z")

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Hi, I have a tubular geometry with fluid flow and velocity data in every point of my computational domain. I would like to get a slice at a desired cross section only with the fluid cells (like in the picture but withou…

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## [Modiying panel\_visibility in @smproperty.xm with Python](https://discourse.paraview.org/t/modiying-panel-visibility-in-smproperty-xm-with-python/8249)

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**Author:** [@Manu](https://discourse.paraview.org/u/Manu)\
**Replies:** 0\
**Last updated:** [October 25, 2021, 11:12am UTC](https://discourse.paraview.org/t/modiying-panel-visibility-in-smproperty-xm-with-python/8249 "2021-10-25T11:12:28Z")

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Dear devs, I’m writing a Python filter and I added two check buttons to the panel with @smproperty.xml(), as copied below. I need the 2nd of these two check buttons to be displayed (or active) only when the first button…

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## [Error ParaView](https://discourse.paraview.org/t/error-paraview/3392)

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**Author:** [@gss416](https://discourse.paraview.org/u/gss416)\
**Replies:** 6\
**Last updated:** [October 25, 2021, 7:34am UTC](https://discourse.paraview.org/t/error-paraview/3392 "2021-10-25T07:34:38Z")

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Hi, when I open the results of calculating the heating of paraview, I get an error: ERROR: In C:\\bbd\\cf096d1e\\build\\superbuild\\paraview\\src\\VTK\\IO\\XML\\vtkXMLReader.cxx, line 299 vtkXMLUnstructuredGridReader (00000210BB…

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## [Run Paraview in PYQT5 widget python](https://discourse.paraview.org/t/run-paraview-in-pyqt5-widget-python/8243)

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**Author:** [@Ali\_Rahnama](https://discourse.paraview.org/u/Ali_Rahnama)\
**Replies:** 1\
**Last updated:** [October 23, 2021, 7:06pm UTC](https://discourse.paraview.org/t/run-paraview-in-pyqt5-widget-python/8243 "2021-10-23T19:06:30Z")

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Hi, I wrote a code for a gui with pyqt, I want to show the results in a widget. But the paraview code opens its own separate window. For example: #------------------------ from paraview.simple import \* Sphere() Sho…

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## [Can I embed a Paraview interactor as a pyqt5 widget?](https://discourse.paraview.org/t/can-i-embed-a-paraview-interactor-as-a-pyqt5-widget/5433)

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**Author:** [@T\_K](https://discourse.paraview.org/u/T_K)\
**Replies:** 2\
**Last updated:** [October 23, 2021, 7:05pm UTC](https://discourse.paraview.org/t/can-i-embed-a-paraview-interactor-as-a-pyqt5-widget/5433 "2021-10-23T19:05:53Z")

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I simple example of a paraview script is from paraview.simple import \* sphere = Sphere…

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## [Visualizing Time History Data stored in Exodus Nodesets or Sidesets](https://discourse.paraview.org/t/visualizing-time-history-data-stored-in-exodus-nodesets-or-sidesets/8239)

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**Author:** [@JMS](https://discourse.paraview.org/u/JMS)\
**Replies:** 0\
**Last updated:** [October 22, 2021, 8:23pm UTC](https://discourse.paraview.org/t/visualizing-time-history-data-stored-in-exodus-nodesets-or-sidesets/8239 "2021-10-22T20:23:52Z")

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Hi There, I have time history data for applying boundary conditions on a nodeset or sideset (e.g. pressures, heat fluxes, temperature boundary conditions, displacment boundary conditions, as either nodal data or facet d…

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## [Paraview crashing with 2-D boxlib data](https://discourse.paraview.org/t/paraview-crashing-with-2-d-boxlib-data/7799)

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**Author:** [@R\_Surya\_Narayan](https://discourse.paraview.org/u/R_Surya_Narayan)\
**Replies:** 5\
**Last updated:** [October 22, 2021, 12:51pm UTC](https://discourse.paraview.org/t/paraview-crashing-with-2-d-boxlib-data/7799 "2021-10-22T12:51:05Z")

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Hello everyone, I am trying to visualize a 2-d boxlib dataset that has many 2-d scalar fields and ParaView simply crashes when I try visualizing multiple variables. The same is observed when I do ANY operation after the …

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## [Error while running ParaView in parallel with more than 200 cores](https://discourse.paraview.org/t/error-while-running-paraview-in-parallel-with-more-than-200-cores/8229)

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**Author:** [@omid](https://discourse.paraview.org/u/omid)\
**Replies:** 0\
**Last updated:** [October 21, 2021, 5:51am UTC](https://discourse.paraview.org/t/error-while-running-paraview-in-parallel-with-more-than-200-cores/8229 "2021-10-21T05:51:19Z")

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Hi, Is there a limitation on the number of cores when multicore postprocessing is used? I have been successfully using parallel postprocessing with less than 200 cores. However, when I increase the number of cores I ge…

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## [Custom per-point glyphs](https://discourse.paraview.org/t/custom-per-point-glyphs/8173)

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**Author:** [@woodscn](https://discourse.paraview.org/u/woodscn)\
**Replies:** 4\
**Last updated:** [October 20, 2021, 5:12pm UTC](https://discourse.paraview.org/t/custom-per-point-glyphs/8173 "2021-10-20T17:12:18Z")

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I want to plot something like a histogram of six grid variables at each point. Is this possible to do in paraview, or am I going to be doing something more custom?

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## [Paraview download binary build configuration parameters](https://discourse.paraview.org/t/paraview-download-binary-build-configuration-parameters/8219)

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**Author:** [@luigi-calori](https://discourse.paraview.org/u/luigi-calori)\
**Replies:** 1\
**Last updated:** [October 20, 2021, 1:54pm UTC](https://discourse.paraview.org/t/paraview-download-binary-build-configuration-parameters/8219 "2021-10-20T13:54:31Z")

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Hi, I’ m trying to build myself paraview to be used with virtualgl glx, opengl and turbovnc. I’ m trying to use spack recipe for that. What currently happen is that within the current stack, I’ ve been able to build an…

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## [SPHVolumeInterpolator with cutoff array](https://discourse.paraview.org/t/sphvolumeinterpolator-with-cutoff-array/3119)

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**Author:** [@cms](https://discourse.paraview.org/u/cms)\
**Replies:** 1\
**Last updated:** [October 20, 2021, 9:35am UTC](https://discourse.paraview.org/t/sphvolumeinterpolator-with-cutoff-array/3119 "2021-10-20T09:35:41Z")

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Hi, I’m trying to use the SPHVolumeInterpolator to create a volume rendering image from a SPH particle distribution. I get nice results with a fixed smoothing length (= fixed spatial step). However, my simulation uses…

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## [Take random sample of data](https://discourse.paraview.org/t/take-random-sample-of-data/8220)

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**Author:** [@massisenergy](https://discourse.paraview.org/u/massisenergy)\
**Replies:** 1\
**Last updated:** [October 19, 2021, 2:53pm UTC](https://discourse.paraview.org/t/take-random-sample-of-data/8220 "2021-10-19T14:53:03Z")

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I have a vtk pointData set, where there are too many points / spheres to visualize at once. Is there a filter for randomly sampling the dataset, say only half of the points can be made visible? A programmable filter wou…

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## [IntegrateVariable](https://discourse.paraview.org/t/integratevariable/8205)

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**Author:** [@ncharala](https://discourse.paraview.org/u/ncharala)\
**Replies:** 3\
**Last updated:** [October 19, 2021, 7:08am UTC](https://discourse.paraview.org/t/integratevariable/8205 "2021-10-19T07:08:09Z")

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Hi, I am trying to find the total vapour volume of all cells with a threshold value between 0.01 and 0.95 and I did the following: Used the Find Data and Run a Selection query for alpha.water between 0.01 and 0.95 Us…

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## [Which the best way to pass parameters in the example web-project-templates-master](https://discourse.paraview.org/t/which-the-best-way-to-pass-parameters-in-the-example-web-project-templates-master/8200)

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**Author:** [@Luis\_Carlos\_Carneiro](https://discourse.paraview.org/u/Luis_Carlos_Carneiro)\
**Replies:** 3\
**Last updated:** [October 18, 2021, 3:39pm UTC](https://discourse.paraview.org/t/which-the-best-way-to-pass-parameters-in-the-example-web-project-templates-master/8200 "2021-10-18T15:39:58Z")

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Dear All, If I have a parameter to pass to the functions in vtk\_protocol.py (to init function) which the best way to pass it. The parameter is available before calling the Paraview Python which runs vtkw-server.py. I t…

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## [Visualize used defined .ply properties with paraview](https://discourse.paraview.org/t/visualize-used-defined-ply-properties-with-paraview/8210)

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**Author:** [@Benjamin\_Fouquet](https://discourse.paraview.org/u/Benjamin_Fouquet)\
**Replies:** 10\
**Last updated:** [October 18, 2021, 3:14pm UTC](https://discourse.paraview.org/t/visualize-used-defined-ply-properties-with-paraview/8210 "2021-10-18T15:14:19Z")

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Hello there, I have a .ply file with a user-defined property for each vertex. The property is a float value that is supposed to show the intensity of a particular vertex. Is there any elegant way to display this value i…

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