# ParaView Support

**URL:** https://discourse.paraview.org/c/paraview-support/7.md?page=54

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

**Page:** 55

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## [Segmentation fault](https://discourse.paraview.org/t/segmentation-fault/13819)

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**Author:** [@oscar\_zagal](https://discourse.paraview.org/u/oscar_zagal)\
**Replies:** 2\
**Last updated:** [January 30, 2024, 2:41pm UTC](https://discourse.paraview.org/t/segmentation-fault/13819 "2024-01-30T14:41:09Z")

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Hi everyone I´m working with the solver chtMultiRegionFoam in the version 20.09 of openFoam for windows, my case is a pipe with water vapor inside, when I want to see the results in Paraview everything is fine until I u…

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## [Seeking Assistance with ParaView Display Issue](https://discourse.paraview.org/t/seeking-assistance-with-paraview-display-issue/13826)

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**Author:** [@alanconway](https://discourse.paraview.org/u/alanconway)\
**Replies:** 2\
**Last updated:** [January 30, 2024, 1:55pm UTC](https://discourse.paraview.org/t/seeking-assistance-with-paraview-display-issue/13826 "2024-01-30T13:55:36Z")

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Hello everyone, I’m encountering a perplexing issue with ParaView version 5.11.2, where a file I’m attempting to open is displayed as empty within the application. Interestingly, when I access the same file through an o…

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## [Poor performance for high number of timesteps](https://discourse.paraview.org/t/poor-performance-for-high-number-of-timesteps/13815)

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**Author:** [@SchnFlo](https://discourse.paraview.org/u/SchnFlo)\
**Replies:** 9\
**Last updated:** [January 29, 2024, 6:34pm UTC](https://discourse.paraview.org/t/poor-performance-for-high-number-of-timesteps/13815 "2024-01-29T18:34:06Z")

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Hello! I am new to ParaView/Vtk and am looking for some guidance. Currently I am testing vtk-xmlUnstructuredGrids as a possible output format for a project. I tested the following sets in the paraview Render-View: 7000…

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## [Issue with interpolation of openfoam results?](https://discourse.paraview.org/t/issue-with-interpolation-of-openfoam-results/13794)

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**Author:** [@tomLauriks](https://discourse.paraview.org/u/tomLauriks)\
**Replies:** 3\
**Last updated:** [January 29, 2024, 2:53pm UTC](https://discourse.paraview.org/t/issue-with-interpolation-of-openfoam-results/13794 "2024-01-29T14:53:04Z")

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I have the result of an openfoam model. I made both a slice and a plane as a source, subsequently the filter resample with data set. When I show the results of a scalar (concentration) on the slice or plane, I see weird…

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## [How to make a animation only with self rotating but not Orbital revolution](https://discourse.paraview.org/t/how-to-make-a-animation-only-with-self-rotating-but-not-orbital-revolution/13755)

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**Author:** [@sharon](https://discourse.paraview.org/u/sharon)\
**Replies:** 4\
**Last updated:** [January 29, 2024, 2:01pm UTC](https://discourse.paraview.org/t/how-to-make-a-animation-only-with-self-rotating-but-not-orbital-revolution/13755 "2024-01-29T14:01:34Z")

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Dear Experts, I fount it is difficult to make a self rotating animation in version 5.12, from camera–\>Follow Path–\>Create Orbit, the final result is Orbital revolution and self rotating, but what i want is only rotatin…

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## [CGNS: streamlines visualization problem](https://discourse.paraview.org/t/cgns-streamlines-visualization-problem/13812)

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**Author:** [@GabriB](https://discourse.paraview.org/u/GabriB)\
**Replies:** 3\
**Last updated:** [January 29, 2024, 1:03pm UTC](https://discourse.paraview.org/t/cgns-streamlines-visualization-problem/13812 "2024-01-29T13:03:20Z")

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Dear all, I imported the .CGNS file of my simulation containing the velocity field of my domain. I tried to extract the streamlines using Stream Tracer and Stream tracer with Custom source. In both cases my streamline…

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## [Values deviate from the paraview calculator vs calculated from CSV](https://discourse.paraview.org/t/values-deviate-from-the-paraview-calculator-vs-calculated-from-csv/13728)

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**Author:** [@sangjun11316](https://discourse.paraview.org/u/sangjun11316)\
**Replies:** 1\
**Last updated:** [January 29, 2024, 11:26am UTC](https://discourse.paraview.org/t/values-deviate-from-the-paraview-calculator-vs-calculated-from-csv/13728 "2024-01-29T11:26:55Z")

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I am using “Plot Over Line” filter for the values from “Calculator” filter. And after saving the values to CSV, I just double-checked the values and found the value deviates. I want to provide the original VTK file tha…

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## [Density plots appear black and buggy instead of displaying colors](https://discourse.paraview.org/t/density-plots-appear-black-and-buggy-instead-of-displaying-colors/7503)

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**Author:** [@Felix\_Beaudoin](https://discourse.paraview.org/u/Felix_Beaudoin)\
**Replies:** 3\
**Last updated:** [July 6, 2021, 2:13pm UTC](https://discourse.paraview.org/t/density-plots-appear-black-and-buggy-instead-of-displaying-colors/7503 "2021-07-06T14:13:03Z")

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I am trying to visualize a .vtk file produced with PyVista (python wrapper of vtk). I opened the attached .vtk file in paraview v5.9.1, which I am running on Windows 10. EC.vtk (3.0 MB) The file is just an unstructure…

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## [Building ParaView 5.8.1 fails because it can not find python](https://discourse.paraview.org/t/building-paraview-5-8-1-fails-because-it-can-not-find-python/6172)

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**Author:** [@R.B](https://discourse.paraview.org/u/R.B)\
**Replies:** 20\
**Last updated:** [January 26, 2024, 10:01pm UTC](https://discourse.paraview.org/t/building-paraview-5-8-1-fails-because-it-can-not-find-python/6172 "2024-01-26T22:01:39Z")

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I’m trying to build ParaView 5.8.1 and I’m enabling PARAVIEW\_USE\_PYTHON I’m trying to pass the paths to my python installation which is python 3.6. I get the following error: CMake Error at VTK/CMake/vtkMod…

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## [Unable to open binary tecplot .plt file](https://discourse.paraview.org/t/unable-to-open-binary-tecplot-plt-file/12760)

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**Author:** [@Fran](https://discourse.paraview.org/u/Fran)\
**Replies:** 2\
**Last updated:** [January 26, 2024, 4:29pm UTC](https://discourse.paraview.org/t/unable-to-open-binary-tecplot-plt-file/12760 "2024-01-26T16:29:05Z")

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Hello, I’m a relatively new user which until now has only ever dealt with native VTK files. I’ve now started using a solver which only outputs Tecplot binary .plt files, but I’ve been unable to open them with Paraview. …

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## [pvserver in parallel - weird behaviour](https://discourse.paraview.org/t/pvserver-in-parallel-weird-behaviour/13805)

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**Author:** [@toolpost](https://discourse.paraview.org/u/toolpost)\
**Replies:** 4\
**Last updated:** [January 26, 2024, 10:10am UTC](https://discourse.paraview.org/t/pvserver-in-parallel-weird-behaviour/13805 "2024-01-26T10:10:04Z")

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Hello everyone, I am trying to post-process a Fluent dataset in Paraview, which has been exported in the Ensight Case Gold format. The dataset is large, and typically it takes around 2 minutes to load. Upon monitoring t…

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## [vtkSocketCommunicator failing to establish a connection](https://discourse.paraview.org/t/vtksocketcommunicator-failing-to-establish-a-connection/13803)

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**Author:** [@Gopika](https://discourse.paraview.org/u/Gopika)\
**Replies:** 3\
**Last updated:** [January 26, 2024, 9:15am UTC](https://discourse.paraview.org/t/vtksocketcommunicator-failing-to-establish-a-connection/13803 "2024-01-26T09:15:35Z")

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I’m attempting to view data from my computer’s server through remote visualization, using pvserver and paraview. I tried connecting to the same version. But I’m getting a connection error, as follows: Also, while tryin…

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## [delaunay surface](https://discourse.paraview.org/t/delaunay-surface/13795)

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**Author:** [@KB92](https://discourse.paraview.org/u/KB92)\
**Replies:** 0\
**Last updated:** [January 25, 2024, 3:57pm UTC](https://discourse.paraview.org/t/delaunay-surface/13795 "2024-01-25T15:57:06Z")

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Hello, I created delaunay from a 2D points data. The points in the file has a gap but when I select surface in delaunay plot, it creates a surface over the missing points as well. Picture 1 is how should the surface look…

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## [streamlines tracing](https://discourse.paraview.org/t/streamlines-tracing/13790)

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**Author:** [@CELESTE\_GIULIANO](https://discourse.paraview.org/u/CELESTE_GIULIANO)\
**Replies:** 2\
**Last updated:** [January 25, 2024, 12:57pm UTC](https://discourse.paraview.org/t/streamlines-tracing/13790 "2024-01-25T12:57:10Z")

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Hi, i’am new in Paraview. I’m trying to visualise the streamlines of a velocity field. The file that i have is a .vtp file (the . vtp is a solution of CFD simulation, obtained with SimVascular). I’m trying, for doing tha…

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## [from 5.9.0 to 5.12.0, behavior of open directory has changed?](https://discourse.paraview.org/t/from-5-9-0-to-5-12-0-behavior-of-open-directory-has-changed/13763)

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**Author:** [@mahb](https://discourse.paraview.org/u/mahb)\
**Replies:** 11\
**Last updated:** [January 25, 2024, 11:52am UTC](https://discourse.paraview.org/t/from-5-9-0-to-5-12-0-behavior-of-open-directory-has-changed/13763 "2024-01-25T11:52:59Z")

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when I use 5.9.0 and click file -\>open, when I choose a file In the dialogue , the ‘OK’ button is actived to click; when I choose a directory In the diaglogue ,the ‘Ok’ buttuon is also activated. After I click ‘Ok’, th…

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## [Demo using vtkPStreamTracer](https://discourse.paraview.org/t/demo-using-vtkpstreamtracer/13792)

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**Author:** [@Sun](https://discourse.paraview.org/u/Sun)\
**Replies:** 0\
**Last updated:** [January 25, 2024, 10:57am UTC](https://discourse.paraview.org/t/demo-using-vtkpstreamtracer/13792 "2024-01-25T10:57:01Z")

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I want to create a distributed, parallel computing streamline on multiple machines. I need an example to show me how to do it and how to use vtkPStreamTracer

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## [Polar Velocity components](https://discourse.paraview.org/t/polar-velocity-components/13786)

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**Author:** [@Mahmoud\_Hosny](https://discourse.paraview.org/u/Mahmoud_Hosny)\
**Replies:** 1\
**Last updated:** [January 25, 2024, 9:48am UTC](https://discourse.paraview.org/t/polar-velocity-components/13786 "2024-01-25T09:48:57Z")

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Hi, I have a cylindrical geometry and want to get the two velocity components in polar coordinates, V\_r & V\_theta. How to do that?

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## [ParaView GUI is blank](https://discourse.paraview.org/t/paraview-gui-is-blank/13780)

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**Author:** [@Andy\_Bauer](https://discourse.paraview.org/u/Andy_Bauer)\
**Replies:** 2\
**Last updated:** [January 25, 2024, 8:43am UTC](https://discourse.paraview.org/t/paraview-gui-is-blank/13780 "2024-01-25T08:43:34Z")

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Hi, I built the latest Qt through the ParaView superbuild and then built the latest ParaView separately. When I try to run the GUI I get a blank: The information that I’m getting is: \[acbauer@oa debugUsingMake\]$ bi…

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## [What types of filters can be used for visualizing vectors?](https://discourse.paraview.org/t/what-types-of-filters-can-be-used-for-visualizing-vectors/13779)

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**Author:** [@govorodi](https://discourse.paraview.org/u/govorodi)\
**Replies:** 1\
**Last updated:** [January 24, 2024, 7:49am UTC](https://discourse.paraview.org/t/what-types-of-filters-can-be-used-for-visualizing-vectors/13779 "2024-01-24T07:49:20Z")

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Hello, There’s a plot (attached) and I’m required to make a similar one. The first thing I thought about is glyphs, but I get a few oddly sized vectors, a whole field of vectors or something else, depending on settings.…

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## [UniformGridRepresentation - Cells covered by 'nan' are transparent?](https://discourse.paraview.org/t/uniformgridrepresentation-cells-covered-by-nan-are-transparent/13774)

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**Author:** [@Liam](https://discourse.paraview.org/u/Liam)\
**Replies:** 2\
**Last updated:** [January 23, 2024, 4:48pm UTC](https://discourse.paraview.org/t/uniformgridrepresentation-cells-covered-by-nan-are-transparent/13774 "2024-01-23T16:48:36Z")

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I have a 3D Uniform Grid .vtr file here as an example. When I import it into paraview, one of the cells has ‘nan’ data. In the Color Map Editor panel, I can set Nan Opacity to 0. However, this results in a ‘hole’ in my c…

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## [Exporting python polar plot into VTK](https://discourse.paraview.org/t/exporting-python-polar-plot-into-vtk/13767)

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**Author:** [@sangjun11316](https://discourse.paraview.org/u/sangjun11316)\
**Replies:** 3\
**Last updated:** [January 23, 2024, 2:31pm UTC](https://discourse.paraview.org/t/exporting-python-polar-plot-into-vtk/13767 "2024-01-23T14:31:46Z")

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I have python numpy arrays of radius, theta, and values that will generate the following image (radius: 1d, theta: 1d, values: 2d \[dim\_theta, dim\_radius\]) fig, ax = plt.subplots(subplot\_kw=dict(projection='polar')) mes…

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## [Plotting integrated values over time](https://discourse.paraview.org/t/plotting-integrated-values-over-time/13617)

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**Author:** [@primer](https://discourse.paraview.org/u/primer)\
**Replies:** 22\
**Last updated:** [January 23, 2024, 12:06pm UTC](https://discourse.paraview.org/t/plotting-integrated-values-over-time/13617 "2024-01-23T12:06:23Z")

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Hi, I see that a number of posts exists concerning this topic but I do not see anything that I can use. I can calculate the force on an object by integrating the pressure over a surface over time. I can not understand…

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## [Difference between 2 Datasets](https://discourse.paraview.org/t/difference-between-2-datasets/7337)

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**Author:** [@frank\_forster](https://discourse.paraview.org/u/frank_forster)\
**Replies:** 9\
**Last updated:** [January 22, 2024, 4:59pm UTC](https://discourse.paraview.org/t/difference-between-2-datasets/7337 "2024-01-22T16:59:58Z")

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Hello, How can I get the difference about one component between two datasets ? Let’s say one layer is 15°C and the other 10°C, I’d like to have a new layer with a field filled with -5°C. Thanks, Frank

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## [calculate MSE between two vtu files with diffrent mesh structures](https://discourse.paraview.org/t/calculate-mse-between-two-vtu-files-with-diffrent-mesh-structures/13768)

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**Author:** [@zj519](https://discourse.paraview.org/u/zj519)\
**Replies:** 6\
**Last updated:** [January 22, 2024, 4:58pm UTC](https://discourse.paraview.org/t/calculate-mse-between-two-vtu-files-with-diffrent-mesh-structures/13768 "2024-01-22T16:58:53Z")

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Dear ParaView Support, I have two vtu files with 3D mesh, but with different number of cells, and different number of points. The vtu files have solution of density, pressure, and velocity. I want to compute MSE of dens…

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## [plot difference between two slices](https://discourse.paraview.org/t/plot-difference-between-two-slices/11299)

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**Author:** [@jludorf](https://discourse.paraview.org/u/jludorf)\
**Replies:** 4\
**Last updated:** [January 22, 2024, 4:33pm UTC](https://discourse.paraview.org/t/plot-difference-between-two-slices/11299 "2024-01-22T16:33:02Z")

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Hi there, I don’t have much expertise using paraView so sorry in advance if this gets trivial but I haven’t found anything useful so far. I am trying to evaluate the outcome of a openFOAM simulation. In this case I tr…

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## [Catalyst pause each timestep](https://discourse.paraview.org/t/catalyst-pause-each-timestep/13769)

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**Author:** [@Juan\_Jose\_Casafranca](https://discourse.paraview.org/u/Juan_Jose_Casafranca)\
**Replies:** 0\
**Last updated:** [January 22, 2024, 3:31pm UTC](https://discourse.paraview.org/t/catalyst-pause-each-timestep/13769 "2024-01-22T15:31:06Z")

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Is there any way to pause a Catalyst simulation at each timestep? I am using in situ visualization to analyze my simulation step by step, while I debug the code with a debugger, I it will be nice to be able to run a sing…

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## [Display Issue with Multiblock Flow Field](https://discourse.paraview.org/t/display-issue-with-multiblock-flow-field/13762)

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**Author:** [@Learner](https://discourse.paraview.org/u/Learner)\
**Replies:** 1\
**Last updated:** [January 22, 2024, 8:30am UTC](https://discourse.paraview.org/t/display-issue-with-multiblock-flow-field/13762 "2024-01-22T08:30:41Z")

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Hello everyone! I am working with octree mesh data and encountering an issue with discontinuities in the flow field I have tried using CellDataToPointData and ResampleWithDataset, but the resulting mesh still exhibi…

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## [An error about using Paraview to display GPRMAX models](https://discourse.paraview.org/t/an-error-about-using-paraview-to-display-gprmax-models/13754)

<div class="topic-metadata">

**Author:** [@Keep\_Fighting](https://discourse.paraview.org/u/Keep_Fighting)\
**Replies:** 1\
**Last updated:** [January 22, 2024, 8:18am UTC](https://discourse.paraview.org/t/an-error-about-using-paraview-to-display-gprmax-models/13754 "2024-01-22T08:18:45Z")

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I installed gprMax\_info.py as a macro in Paraview. However, when I select the macro from the Toolbar I get the following error: Traceback (most recent call last): File “”, line 43, in TypeError: startswith first arg …

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## [vtk to shp](https://discourse.paraview.org/t/vtk-to-shp/13731)

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**Author:** [@Jaime\_S\_Manjarres\_Co](https://discourse.paraview.org/u/Jaime_S_Manjarres_Co)\
**Replies:** 1\
**Last updated:** [January 18, 2024, 10:56am UTC](https://discourse.paraview.org/t/vtk-to-shp/13731 "2024-01-18T10:56:48Z")

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Could I generate shp file from vtk file

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## [Error message for clip or slice in a saved state](https://discourse.paraview.org/t/error-message-for-clip-or-slice-in-a-saved-state/9710)

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**Author:** [@Venke](https://discourse.paraview.org/u/Venke)\
**Replies:** 5\
**Last updated:** [January 18, 2024, 9:56am UTC](https://discourse.paraview.org/t/error-message-for-clip-or-slice-in-a-saved-state/9710 "2024-01-18T09:56:39Z")

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Hi, Whenever I apply a clip or slice to a netcdf-volume and save the state, an error message appears when opening the state: ERROR: In C:\\glr\\builds\\paraview\\paraview-ci\\build\\superbuild\\paraview\\src\\VTK\\Common\\Executi…

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