# ParaView Support

**URL:** https://discourse.paraview.org/c/paraview-support/7.md?page=38

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

**Page:** 39

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## [VTS file that created by VTK shows errors of wireframe and ripple-like disappearance of values when three dimension are not the same](https://discourse.paraview.org/t/vts-file-that-created-by-vtk-shows-errors-of-wireframe-and-ripple-like-disappearance-of-values-when-three-dimension-are-not-the-same/15013)

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**Author:** [@cheapmeow](https://discourse.paraview.org/u/cheapmeow)\
**Replies:** 2\
**Last updated:** [July 9, 2024, 11:00am UTC](https://discourse.paraview.org/t/vts-file-that-created-by-vtk-shows-errors-of-wireframe-and-ripple-like-disappearance-of-values-when-three-dimension-are-not-the-same/15013 "2024-07-09T11:00:48Z")

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Description I am using custom solver to work. I use VTK to output VTS file, when three dimensions are the same, there is no errors. But when they are not the same, paraview read the file and shows weird wireframe preview…

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## [how to subtract two models from each other](https://discourse.paraview.org/t/how-to-subtract-two-models-from-each-other/15007)

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**Author:** [@Ali1990dashti](https://discourse.paraview.org/u/Ali1990dashti)\
**Replies:** 1\
**Last updated:** [July 8, 2024, 3:17pm UTC](https://discourse.paraview.org/t/how-to-subtract-two-models-from-each-other/15007 "2024-07-08T15:17:58Z")

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Dear community, I am using Pravaiew 5.12.0 in windows. I have two models and want to subtract the cell data variable of the models. The name of the variable is ST. I have uploaded two models: I want to subtract the ST o…

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## [Paraview 'numpy' module \[SOLVED\]](https://discourse.paraview.org/t/paraview-numpy-module-solved/15003)

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**Author:** [@Il\_Briga](https://discourse.paraview.org/u/Il_Briga)\
**Replies:** 2\
**Last updated:** [July 8, 2024, 9:05am UTC](https://discourse.paraview.org/t/paraview-numpy-module-solved/15003 "2024-07-08T09:05:40Z")

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Hi there, very silly question here but no solutions have been found. I’ve installed OpenFoam following this guide and everything runs fine. However i cannot use the ‘Python Calculator’ since if i launch the simple comma…

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## [cant use paraview with ubuntu](https://discourse.paraview.org/t/cant-use-paraview-with-ubuntu/14999)

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**Author:** [@jobyjob](https://discourse.paraview.org/u/jobyjob)\
**Replies:** 11\
**Last updated:** [July 5, 2024, 10:03pm UTC](https://discourse.paraview.org/t/cant-use-paraview-with-ubuntu/14999 "2024-07-05T22:03:34Z")

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when I try to open Para view with ubuntu for open foam . I am not able to get the paraview it is showing error like paraview: error while loading shared libraries: libQt5Core.so.5: cannot open shared object file: No such…

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## [OSPRay + OptiX shaders](https://discourse.paraview.org/t/ospray-optix-shaders/14997)

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**Author:** [@shawn](https://discourse.paraview.org/u/shawn)\
**Replies:** 1\
**Last updated:** [July 5, 2024, 9:59pm UTC](https://discourse.paraview.org/t/ospray-optix-shaders/14997 "2024-07-05T21:59:06Z")

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Hey all, Just wondering if OSPRay and OptiX uses their own default shaders or do they still use the same shaders from VTK. I am trying to do a shader replacement while having ray tracing on however, it does not work lea…

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## [Getting paraview to read ZFP compressed netCDF4 files (hdf5 files)](https://discourse.paraview.org/t/getting-paraview-to-read-zfp-compressed-netcdf4-files-hdf5-files/14966)

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**Author:** [@leighorf](https://discourse.paraview.org/u/leighorf)\
**Replies:** 1\
**Last updated:** [July 5, 2024, 4:44pm UTC](https://discourse.paraview.org/t/getting-paraview-to-read-zfp-compressed-netcdf4-files-hdf5-files/14966 "2024-07-05T16:44:07Z")

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Hello, My data format is ZFP-compressed netCDF4 (netcdf4 files are HDF5 files). For Paraview version 5.11.1 I was able to get paraview to read my ZFP compressed netCDF4 files by setting my HDF5\_PLUGIN\_PATH variable to w…

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## [Save Integrate Variable values as specific variables for use in calculator](https://discourse.paraview.org/t/save-integrate-variable-values-as-specific-variables-for-use-in-calculator/14978)

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**Author:** [@vsaha](https://discourse.paraview.org/u/vsaha)\
**Replies:** 3\
**Last updated:** [July 5, 2024, 4:28am UTC](https://discourse.paraview.org/t/save-integrate-variable-values-as-specific-variables-for-use-in-calculator/14978 "2024-07-05T04:28:46Z")

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Hello, I want to use an integrated variable as an input for further calculations for CFD postprocessing (FVM method). The steps are described below: Create a Slice. Apply filter Cell Size to the slice, to obtain indivi…

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## [How does the filter Integrate Variables work for Umag (velocity magnitude)?](https://discourse.paraview.org/t/how-does-the-filter-integrate-variables-work-for-umag-velocity-magnitude/14979)

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**Author:** [@vsaha](https://discourse.paraview.org/u/vsaha)\
**Replies:** 2\
**Last updated:** [July 5, 2024, 3:01am UTC](https://discourse.paraview.org/t/how-does-the-filter-integrate-variables-work-for-umag-velocity-magnitude/14979 "2024-07-05T03:01:10Z")

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Hello, I am trying to understand how the Integrate Variables filter works on the velocity magnitude. I created a slice and added Cell Size filter to it. Then, I exported it as a CSV. Added Integrate Variables filter to…

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## [Plot data from a .pvd file in PythonView](https://discourse.paraview.org/t/plot-data-from-a-pvd-file-in-pythonview/14243)

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**Author:** [@legno](https://discourse.paraview.org/u/legno)\
**Replies:** 1\
**Last updated:** [July 4, 2024, 9:17pm UTC](https://discourse.paraview.org/t/plot-data-from-a-pvd-file-in-pythonview/14243 "2024-07-04T21:17:44Z")

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Hello, following this tutorial I managed to create a histogram of the datapoints from a Paraview file with PythonView. Now I would like to consider the Paraview file attached, and plot it in PythonView. Note that the .pv…

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## [help with raw data visualization](https://discourse.paraview.org/t/help-with-raw-data-visualization/14950)

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**Author:** [@gurgite](https://discourse.paraview.org/u/gurgite)\
**Replies:** 5\
**Last updated:** [July 4, 2024, 2:50pm UTC](https://discourse.paraview.org/t/help-with-raw-data-visualization/14950 "2024-07-04T14:50:41Z")

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Hallo. Sorry to bother but I’m really stuck with importing 3D images (confocal fluorescence microscopy data) from Fiji. I finally managed to open the .raw file without error messages, still I simply can’t see anything in…

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## [paraview crashing when using D3 filter](https://discourse.paraview.org/t/paraview-crashing-when-using-d3-filter/14298)

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**Author:** [@otaolafr](https://discourse.paraview.org/u/otaolafr)\
**Replies:** 4\
**Last updated:** [July 4, 2024, 9:03am UTC](https://discourse.paraview.org/t/paraview-crashing-when-using-d3-filter/14298 "2024-07-04T09:03:35Z")

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Hello, I am having a strange behavior, I have a simulation with lagrangian particles in a parallel OpenFoam case, and I have the following script (end of post). as I want to eliminate the internal boundaries done by the…

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## [get possible value range of slice in python](https://discourse.paraview.org/t/get-possible-value-range-of-slice-in-python/14976)

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**Author:** [@otaolafr](https://discourse.paraview.org/u/otaolafr)\
**Replies:** 1\
**Last updated:** [July 3, 2024, 1:04pm UTC](https://discourse.paraview.org/t/get-possible-value-range-of-slice-in-python/14976 "2024-07-03T13:04:35Z")

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Hello, I would like to optimize some of my code, and one thing I usually do is creating a slice with several range values, and I would like to get the minimum and maximum possible values for this range automatically. th…

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## [4D Flow Streamlines are cut off and have a strange orientation](https://discourse.paraview.org/t/4d-flow-streamlines-are-cut-off-and-have-a-strange-orientation/14973)

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**Author:** [@tobi13](https://discourse.paraview.org/u/tobi13)\
**Replies:** 2\
**Last updated:** [July 3, 2024, 1:00pm UTC](https://discourse.paraview.org/t/4d-flow-streamlines-are-cut-off-and-have-a-strange-orientation/14973 "2024-07-03T13:00:16Z")

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I want to visualize 4D Flow Data from MRI measurements with streamlines and/or pathlines. Right now, I have a Dataset of 20 VTK files (20 time steps). The file format is structured grid and the files contain velocity va…

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## [Exodus file does not contain sidesets](https://discourse.paraview.org/t/exodus-file-does-not-contain-sidesets/14959)

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**Author:** [@Mhamad\_Mahdi\_Alloush](https://discourse.paraview.org/u/Mhamad_Mahdi_Alloush)\
**Replies:** 6\
**Last updated:** [July 3, 2024, 9:41am UTC](https://discourse.paraview.org/t/exodus-file-does-not-contain-sidesets/14959 "2024-07-03T09:41:26Z")

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Hi, I loaded a mesh (specifically an openfoam mesh) into paraview, and I need to export it to as an exodus file with sidesets. However, as I tried to do that, I cant see the sidesets in the exodus file. Should I do any …

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## [The radius display of particles is incorrect](https://discourse.paraview.org/t/the-radius-display-of-particles-is-incorrect/14962)

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**Author:** [@Guanlong](https://discourse.paraview.org/u/Guanlong)\
**Replies:** 6\
**Last updated:** [July 3, 2024, 1:46am UTC](https://discourse.paraview.org/t/the-radius-display-of-particles-is-incorrect/14962 "2024-07-03T01:46:16Z")

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Hello researchers, I have several VTK files containing two different particle sizes, with radii of 3.55e-4 m (particle 1) and 5e-4 m (particle 2), respectively. As the reaction progresses, the radius of particle 2 gradua…

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## [Python kernel crashes after 2min savedata](https://discourse.paraview.org/t/python-kernel-crashes-after-2min-savedata/14971)

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**Author:** [@alberto.rodriguez](https://discourse.paraview.org/u/alberto.rodriguez)\
**Replies:** 0\
**Last updated:** [July 2, 2024, 10:56am UTC](https://discourse.paraview.org/t/python-kernel-crashes-after-2min-savedata/14971 "2024-07-02T10:56:37Z")

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I am using paraview 5.12.1 with python 3.10.4. I have created a trace from the gui and tried to run it with python. In the gui the SaveData takes a long time (10 min) with the interface unresponsive,but it finishes. I…

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## [Error while compiling ParaView example plugin.](https://discourse.paraview.org/t/error-while-compiling-paraview-example-plugin/14957)

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**Author:** [@brodude](https://discourse.paraview.org/u/brodude)\
**Replies:** 1\
**Last updated:** [July 1, 2024, 3:49pm UTC](https://discourse.paraview.org/t/error-while-compiling-paraview-example-plugin/14957 "2024-07-01T15:49:26Z")

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Hi everyone, I have been trying to compile DockWidget plugin under paraView/ParaView/Examples/Plugins/ and it’s given me this particular error from several days. I have attached the error followed by the lines in the so…

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## [Hide point cloud sphere using macro](https://discourse.paraview.org/t/hide-point-cloud-sphere-using-macro/14964)

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**Author:** [@VijayN10](https://discourse.paraview.org/u/VijayN10)\
**Replies:** 1\
**Last updated:** [July 1, 2024, 3:03pm UTC](https://discourse.paraview.org/t/hide-point-cloud-sphere-using-macro/14964 "2024-07-01T15:03:15Z")

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I am trying to create an image of a stream tracer with the seed type set to “Point Cloud”. I want to achieve this using a macro in ParaView. I used the trace tool to record my operations, which included setting up the st…

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## [Plot freeze selection over time](https://discourse.paraview.org/t/plot-freeze-selection-over-time/14960)

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**Author:** [@Tang](https://discourse.paraview.org/u/Tang)\
**Replies:** 0\
**Last updated:** [June 30, 2024, 8:56am UTC](https://discourse.paraview.org/t/plot-freeze-selection-over-time/14960 "2024-06-30T08:56:30Z")

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Hello everyone, I want to implement the “freeze” feature of “create selection” in a script, but I’m not very familiar with script functions. It seems that the ConvertSelection function should be used for this, but I stil…

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## [How to extract the boundary surfaces from a Ensight .case file?](https://discourse.paraview.org/t/how-to-extract-the-boundary-surfaces-from-a-ensight-case-file/14952)

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**Author:** [@Phil](https://discourse.paraview.org/u/Phil)\
**Replies:** 2\
**Last updated:** [June 29, 2024, 1:59am UTC](https://discourse.paraview.org/t/how-to-extract-the-boundary-surfaces-from-a-ensight-case-file/14952 "2024-06-29T01:59:08Z")

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Hi everyone, I am a PV newer and used to work with Ensight, they are so different from each other… I cannot even extract the boundary surfaces of Ensight files in PV. Many filters has been tried but useless. Is there a…

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## [Interpolating data to create 2D surface from point data](https://discourse.paraview.org/t/interpolating-data-to-create-2d-surface-from-point-data/14944)

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**Author:** [@Federico\_Venturi](https://discourse.paraview.org/u/Federico_Venturi)\
**Replies:** 3\
**Last updated:** [June 28, 2024, 3:20pm UTC](https://discourse.paraview.org/t/interpolating-data-to-create-2d-surface-from-point-data/14944 "2024-06-28T15:20:58Z")

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Hello everyone, I am brand new to ParaView and I have data from Ansys Additive in .vtk format that contains temperature values for a slice of a 3D object. I would like to be able to visualize this information and be abl…

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## [OSPRay rendering slow](https://discourse.paraview.org/t/ospray-rendering-slow/14941)

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**Author:** [@shawn](https://discourse.paraview.org/u/shawn)\
**Replies:** 4\
**Last updated:** [June 28, 2024, 1:30pm UTC](https://discourse.paraview.org/t/ospray-rendering-slow/14941 "2024-06-28T13:30:29Z")

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Hey all, I am trying to do some rendering with OSPRay Raycaster on ParaView 5.12.1. As of right now, whenever using raytracing trying to do any movement of the object is incredibly slow and borderline unusable. I am try…

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## [How to realistically display particles of two different radii](https://discourse.paraview.org/t/how-to-realistically-display-particles-of-two-different-radii/14948)

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**Author:** [@Guanlong](https://discourse.paraview.org/u/Guanlong)\
**Replies:** 4\
**Last updated:** [June 28, 2024, 10:33am UTC](https://discourse.paraview.org/t/how-to-realistically-display-particles-of-two-different-radii/14948 "2024-06-28T10:33:05Z")

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Hello researchers, my VTK file contains two types of particles with different radii. However, during the visualization process, I found that different particles have different colors but the same size. I want to display …

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## [Select which GPU to use when starting ParaView](https://discourse.paraview.org/t/select-which-gpu-to-use-when-starting-paraview/3605)

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**Author:** [@ma-sadeghi](https://discourse.paraview.org/u/ma-sadeghi)\
**Replies:** 12\
**Last updated:** [June 28, 2024, 8:31am UTC](https://discourse.paraview.org/t/select-which-gpu-to-use-when-starting-paraview/3605 "2024-06-28T08:31:34Z")

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Hello, I have a workstation with two dissimilar GPUs. I only have one display, so expectedly, only one of the GPUs (GPU-1) is connected to my display. When I open ParaView -\> About, I see that ParaView only recognizes G…

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## [create polyline programamtically in Python to simulate trajectory](https://discourse.paraview.org/t/create-polyline-programamtically-in-python-to-simulate-trajectory/14933)

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**Author:** [@\_Marco](https://discourse.paraview.org/u/_Marco)\
**Replies:** 5\
**Last updated:** [June 28, 2024, 7:59am UTC](https://discourse.paraview.org/t/create-polyline-programamtically-in-python-to-simulate-trajectory/14933 "2024-06-28T07:59:41Z")

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Dear Community, I am trying, without much success so far, to animate a trajectory over time. This trajectory could be a drone or an underwater glider, so at each timestep i have a triplet of (x,y,z) and an associated sc…

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## [data loss after running a script](https://discourse.paraview.org/t/data-loss-after-running-a-script/14926)

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**Author:** [@Tang](https://discourse.paraview.org/u/Tang)\
**Replies:** 6\
**Last updated:** [June 28, 2024, 6:55am UTC](https://discourse.paraview.org/t/data-loss-after-running-a-script/14926 "2024-06-28T06:55:37Z")

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Hi all, I recorded a script in ParaView as shown in Figure 1, and then used the script in a new interface to visualize the data. However, I found that there is some missing data in the plot. Does anyone know what mi…

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## [How to output gas mass flow rate](https://discourse.paraview.org/t/how-to-output-gas-mass-flow-rate/14936)

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**Author:** [@Guanlong](https://discourse.paraview.org/u/Guanlong)\
**Replies:** 0\
**Last updated:** [June 27, 2024, 9:17am UTC](https://discourse.paraview.org/t/how-to-output-gas-mass-flow-rate/14936 "2024-06-27T09:17:10Z")

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Excuse me, researcher. I have some VTK files about biomass pyrolysis. I want to output the distribution of the mass flow rate of tar and gas at a certain section(the unit of mass flow rate is kg/s). How should I proceed? …

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## [Memory/Storage Problem?](https://discourse.paraview.org/t/memory-storage-problem/14931)

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**Author:** [@lhabeeb](https://discourse.paraview.org/u/lhabeeb)\
**Replies:** 1\
**Last updated:** [June 27, 2024, 11:37am UTC](https://discourse.paraview.org/t/memory-storage-problem/14931 "2024-06-27T11:37:11Z")

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I am on Windows 11, using ParaView Version 5.13.0-RC1 I believe I am having problems with memory/storage. In ParaView, there is a bar at the bottom right of my screen that gives my directory then a certain amount of GiB…

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## [Paraview Crashing due to cell arrays going out of index during a specific set of setsps](https://discourse.paraview.org/t/paraview-crashing-due-to-cell-arrays-going-out-of-index-during-a-specific-set-of-setsps/14904)

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**Author:** [@Prashanthvsdvn](https://discourse.paraview.org/u/Prashanthvsdvn)\
**Replies:** 7\
**Last updated:** [June 27, 2024, 9:01am UTC](https://discourse.paraview.org/t/paraview-crashing-due-to-cell-arrays-going-out-of-index-during-a-specific-set-of-setsps/14904 "2024-06-27T09:01:15Z")

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I have created an VTU file with data arrays (including coordinates and element definition arrays) for multiple time steps in the same file, and paraview is crashing only for this specific set of steps. Workflow 1 Open …

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## [Remote server disconnects when attempting to open file with custom reader](https://discourse.paraview.org/t/remote-server-disconnects-when-attempting-to-open-file-with-custom-reader/14865)

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**Author:** [@JamesAshford](https://discourse.paraview.org/u/JamesAshford)\
**Replies:** 2\
**Last updated:** [June 26, 2024, 12:57pm UTC](https://discourse.paraview.org/t/remote-server-disconnects-when-attempting-to-open-file-with-custom-reader/14865 "2024-06-26T12:57:13Z")

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Hi all :slight\_smile: I am running into a really frustrating problem which I have tried in vain to troubleshoot for about a fortnight now, so would really appreciate some pointers on what to try next. Essentially my iss…

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