# ParaView Support

**URL:** https://discourse.paraview.org/c/paraview-support/7.md?page=81

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**Page:** 82

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## [maximum edge length of cell](https://discourse.paraview.org/t/maximum-edge-length-of-cell/11700)

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**Author:** [@Captain\_Convergence](https://discourse.paraview.org/u/Captain_Convergence)\
**Replies:** 1\
**Last updated:** [March 24, 2023, 2:51pm UTC](https://discourse.paraview.org/t/maximum-edge-length-of-cell/11700 "2023-03-24T14:51:23Z")

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Dear all, I need to obtain the maximum edge length for each one of my cells. My data is a multiblock dataset in .plt format (from Tecplot). I tried with the “Cell size”, “Mesh Quality” and “Extract Edges” that I can us…

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## [How to show the boundary/outline of a curved region?](https://discourse.paraview.org/t/how-to-show-the-boundary-outline-of-a-curved-region/11293)

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**Author:** [@nwscfd](https://discourse.paraview.org/u/nwscfd)\
**Replies:** 1\
**Last updated:** [March 24, 2023, 1:08pm UTC](https://discourse.paraview.org/t/how-to-show-the-boundary-outline-of-a-curved-region/11293 "2023-03-24T13:08:59Z")

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I am visualizing CFD results from a nozzle simulated in OpenFOAM. My colormap shows high temperatures as a white-ish color, as seen below. Here’s what it looks like with a different colormap: How can I render a b…

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## [How can I accociate a parameter to each file?](https://discourse.paraview.org/t/how-can-i-accociate-a-parameter-to-each-file/11691)

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**Author:** [@taratana](https://discourse.paraview.org/u/taratana)\
**Replies:** 1\
**Last updated:** [March 24, 2023, 10:20am UTC](https://discourse.paraview.org/t/how-can-i-accociate-a-parameter-to-each-file/11691 "2023-03-24T10:20:29Z")

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I am calculating coil current distribution in a cross-section and I successfully visualized the output at every time step with Paraview. But I couldn’t associate a parameter that varies with time with every vtk file. I…

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## [Rendering Erorrs with ParaView + Ospray](https://discourse.paraview.org/t/rendering-erorrs-with-paraview-ospray/11675)

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**Author:** [@zilken](https://discourse.paraview.org/u/zilken)\
**Replies:** 2\
**Last updated:** [March 23, 2023, 7:28pm UTC](https://discourse.paraview.org/t/rendering-erorrs-with-paraview-ospray/11675 "2023-03-23T19:28:48Z")

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Hello, I am from Jülich Supercomputing Centre, Germany, and we would like to volume rendering some climate data with ParaView + Ospray. Unfortunately we encountered a strange rendering error when the size of the data e…

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## [Both Paraview 5.9 and 5.11 crash when I apply a glyph filter](https://discourse.paraview.org/t/both-paraview-5-9-and-5-11-crash-when-i-apply-a-glyph-filter/11684)

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**Author:** [@FMacca](https://discourse.paraview.org/u/FMacca)\
**Replies:** 1\
**Last updated:** [March 23, 2023, 4:24pm UTC](https://discourse.paraview.org/t/both-paraview-5-9-and-5-11-crash-when-i-apply-a-glyph-filter/11684 "2023-03-23T16:24:31Z")

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Hello, I am trying to use Paraview in order to do some post processing for a LES simulation. In order to best show velocity wind field I am trying to apply a glyph filter to add some arrows on my render. However if I tr…

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## [OSPRAY Material with extrusion surface](https://discourse.paraview.org/t/ospray-material-with-extrusion-surface/11683)

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**Author:** [@bastiend](https://discourse.paraview.org/u/bastiend)\
**Replies:** 0\
**Last updated:** [March 23, 2023, 2:03pm UTC](https://discourse.paraview.org/t/ospray-material-with-extrusion-surface/11683 "2023-03-23T14:03:18Z")

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Hello, I have a 2D surface mesh, and for my visualizations I usually use the “surface extrusion” representation. I would now like to use better render and therefore use materials with OSPRAY. But it seems that it only …

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## [Transfer Point Dataset to other Cell datatset](https://discourse.paraview.org/t/transfer-point-dataset-to-other-cell-datatset/11677)

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**Author:** [@cyrille](https://discourse.paraview.org/u/cyrille)\
**Replies:** 2\
**Last updated:** [March 23, 2023, 1:52pm UTC](https://discourse.paraview.org/t/transfer-point-dataset-to-other-cell-datatset/11677 "2023-03-23T13:52:09Z")

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Hello, I have two datasets : the first one is a point data set and the second one is a dataset containing point data as well as cell data (UnStructuredGrid). It happens that the points of the first dataset are precisely…

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## [Visualized Lagrange curve in a curved appearance](https://discourse.paraview.org/t/visualized-lagrange-curve-in-a-curved-appearance/11679)

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**Author:** [@olwician](https://discourse.paraview.org/u/olwician)\
**Replies:** 1\
**Last updated:** [March 23, 2023, 9:06am UTC](https://discourse.paraview.org/t/visualized-lagrange-curve-in-a-curved-appearance/11679 "2023-03-23T09:06:57Z")

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I have a vtu file that contains a Lagrangian curve, but when I import it into paraview, I find that the visualized result is a broken line, what should I do to visualize it as a curved line. Add: A similar method is …

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## [Unable to draw 2D streamlines with vti](https://discourse.paraview.org/t/unable-to-draw-2d-streamlines-with-vti/11674)

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**Author:** [@maoying](https://discourse.paraview.org/u/maoying)\
**Replies:** 2\
**Last updated:** [March 23, 2023, 1:23am UTC](https://discourse.paraview.org/t/unable-to-draw-2d-streamlines-with-vti/11674 "2023-03-23T01:23:22Z")

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Hi, every one! I am a beginner to Paraview. Could someone help me to visualize the data please? I have vti files where 2D velocity data also in. This is the vti file Uploading: vtk003885.vti… I can 't draw 2D strea…

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## [SliceAlongPolyLine filter direction](https://discourse.paraview.org/t/slicealongpolyline-filter-direction/11641)

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**Author:** [@CJBright](https://discourse.paraview.org/u/CJBright)\
**Replies:** 1\
**Last updated:** [March 21, 2023, 2:50pm UTC](https://discourse.paraview.org/t/slicealongpolyline-filter-direction/11641 "2023-03-21T14:50:20Z")

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Hi there, I’m post-processing some cardiovascular simulations using Windows 10, PV 5.11.0. I would like to take a slice through the centre of a vessel to plot data-arrays like the wall-shear-stress at the points inters…

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## [Fluent 2021 R1 (Ensight Case Gold) solution files to ParaView 5.9.0](https://discourse.paraview.org/t/fluent-2021-r1-ensight-case-gold-solution-files-to-paraview-5-9-0/7512)

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**Author:** [@kirit\_101](https://discourse.paraview.org/u/kirit_101)\
**Replies:** 5\
**Last updated:** [March 21, 2023, 1:57am UTC](https://discourse.paraview.org/t/fluent-2021-r1-ensight-case-gold-solution-files-to-paraview-5-9-0/7512 "2023-03-21T01:57:40Z")

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Hello: Looks like in Fluent 2021 R1 Engisht Case Gold file format has some changes. Did anyone use the recent Ensight Gold format in ParaView 5.9.0? If you can share your experience much appreciated. When I try to read…

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## [Python scripting on MAC: can’t load paraview.simple with standard python interpreter](https://discourse.paraview.org/t/python-scripting-on-mac-can-t-load-paraview-simple-with-standard-python-interpreter/6381)

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**Author:** [@jschm](https://discourse.paraview.org/u/jschm)\
**Replies:** 2\
**Last updated:** [March 20, 2023, 8:26pm UTC](https://discourse.paraview.org/t/python-scripting-on-mac-can-t-load-paraview-simple-with-standard-python-interpreter/6381 "2023-03-20T20:26:02Z")

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Hi everybody I want to use paraview.simple with my standard python interpreter (currently python 3.7.0, based on conda). I have installed the latest release ParaView-5.9.0 on my MAC. I tried following the instructions a…

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## [How to see orignial color images on ParaVIew](https://discourse.paraview.org/t/how-to-see-orignial-color-images-on-paraview/11664)

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**Author:** [@kokebdese](https://discourse.paraview.org/u/kokebdese)\
**Replies:** 2\
**Last updated:** [March 20, 2023, 3:09pm UTC](https://discourse.paraview.org/t/how-to-see-orignial-color-images-on-paraview/11664 "2023-03-20T15:09:52Z")

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Hi all, I tried to open a PNG/Tiff format images using ParaView, but I couldn’t t able to see the original color of the image on ParaView. How can I change to see the original color of the image? Thanks

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## [Extrude individual countries from shapefile world map](https://discourse.paraview.org/t/extrude-individual-countries-from-shapefile-world-map/11662)

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**Author:** [@\_Marco](https://discourse.paraview.org/u/_Marco)\
**Replies:** 2\
**Last updated:** [March 20, 2023, 11:04am UTC](https://discourse.paraview.org/t/extrude-individual-countries-from-shapefile-world-map/11662 "2023-03-20T11:04:18Z")

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Dear Members, i have a shapefile, a world map, containing a bit more than 200 countries and their political boundaries. From that, I would like to “extrude” user-defined, individual countries, by assigning a scalar tha…

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## [Can ParaView be case insensitive for variables?](https://discourse.paraview.org/t/can-paraview-be-case-insensitive-for-variables/11621)

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**Author:** [@wascott](https://discourse.paraview.org/u/wascott)\
**Replies:** 8\
**Last updated:** [March 20, 2023, 1:50am UTC](https://discourse.paraview.org/t/can-paraview-be-case-insensitive-for-variables/11621 "2023-03-20T01:50:31Z")

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Hi ParaViewers, Is there a way to make ParaView case insensitive for variables coming out of Exodus datasets? An example would be my user wants to have v\_x, V\_Y and v\_Z all be part fo the same vector. One Idea I had i…

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## [script generated with trace doesn't work with pvbatch](https://discourse.paraview.org/t/script-generated-with-trace-doesnt-work-with-pvbatch/7735)

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**Author:** [@hopitigala](https://discourse.paraview.org/u/hopitigala)\
**Replies:** 2\
**Last updated:** [March 17, 2023, 4:52pm UTC](https://discourse.paraview.org/t/script-generated-with-trace-doesnt-work-with-pvbatch/7735 "2023-03-17T16:52:22Z")

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xz\_animation\_vortmag\_vtk\_series\_batch.py (6.7 KB) Attached is a file generated using paraview trace utility. The scripts runs without any error when runscript is used in gui. However, the script fails when pvbatch comma…

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## [How to minimize the gap between FeatureEdges (in boundary setting) and the polygonal shape?](https://discourse.paraview.org/t/how-to-minimize-the-gap-between-featureedges-in-boundary-setting-and-the-polygonal-shape/11645)

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**Author:** [@Marek-Muchow](https://discourse.paraview.org/u/Marek-Muchow)\
**Replies:** 0\
**Last updated:** [March 17, 2023, 10:03am UTC](https://discourse.paraview.org/t/how-to-minimize-the-gap-between-featureedges-in-boundary-setting-and-the-polygonal-shape/11645 "2023-03-17T10:03:25Z")

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Hi, this is basically a follow-up question from this question about how to get the outline of my shape consisting of several polygons. But my current problem relates only to the Feature Edge function (documentation here)…

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## [Accessing MPI comm in a pvbatch script](https://discourse.paraview.org/t/accessing-mpi-comm-in-a-pvbatch-script/11637)

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**Author:** [@Prathamesh\_Sirmalla](https://discourse.paraview.org/u/Prathamesh_Sirmalla)\
**Replies:** 1\
**Last updated:** [March 16, 2023, 12:21am UTC](https://discourse.paraview.org/t/accessing-mpi-comm-in-a-pvbatch-script/11637 "2023-03-16T00:21:10Z")

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I have a python script which reads a .cgns file, computes my quantities of interest and writes it to a file. Initially I was using pvpython to run this script, but as my data sets are growing I wish to switch to pvbatch.…

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## [running ParaView in parallel (2)](https://discourse.paraview.org/t/running-paraview-in-parallel-2/11634)

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**Author:** [@Rigel](https://discourse.paraview.org/u/Rigel)\
**Replies:** 1\
**Last updated:** [March 15, 2023, 2:47pm UTC](https://discourse.paraview.org/t/running-paraview-in-parallel-2/11634 "2023-03-15T14:47:21Z")

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Hi, I am trying to run ParaView in parallel in a cluster’s visualization node with 36 cores: \[alvesrig@irene7100 fine-hex\]$ whereis mpiexec mpiexec: /ccc/scratch/cont003/gen7178/alvesrig/ParaView-5.10.1-MPI-Linux-Pytho…

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## [View directionality of sideset normals](https://discourse.paraview.org/t/view-directionality-of-sideset-normals/11618)

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**Author:** [@Adriet](https://discourse.paraview.org/u/Adriet)\
**Replies:** 8\
**Last updated:** [March 15, 2023, 1:58pm UTC](https://discourse.paraview.org/t/view-directionality-of-sideset-normals/11618 "2023-03-15T13:58:01Z")

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Is there a way to inspect the directionality of a sideset normal in paraview from an imported exodus file? I have a 2D file representing four solid blocks in a fluid, and for reasons, I want to ensure that all surface no…

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## [Operations on frames - linear combination and envelope](https://discourse.paraview.org/t/operations-on-frames-linear-combination-and-envelope/11087)

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**Author:** [@FEngineer](https://discourse.paraview.org/u/FEngineer)\
**Replies:** 2\
**Last updated:** [March 15, 2023, 11:37am UTC](https://discourse.paraview.org/t/operations-on-frames-linear-combination-and-envelope/11087 "2023-03-15T11:37:16Z")

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Hi, I’ve found a way to sum results from 2 data sets: Results superposition But is it possible to do the same when there’s a single data set containing multiple frames (selected as Time) ? Also, is there a way to obta…

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## [Cell data at boundaries](https://discourse.paraview.org/t/cell-data-at-boundaries/10833)

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**Author:** [@Eilloo](https://discourse.paraview.org/u/Eilloo)\
**Replies:** 7\
**Last updated:** [March 14, 2023, 4:12pm UTC](https://discourse.paraview.org/t/cell-data-at-boundaries/10833 "2023-03-14T16:12:07Z")

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Hello all, I am having trouble processing results from a simple CFD case, where the output is cell data for pressure and velocity in an exodus file. In my case, I have a no-slip boundary condition, meaning the velocity…

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## [Change Extents Using ParaView Python](https://discourse.paraview.org/t/change-extents-using-paraview-python/11626)

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**Author:** [@patchett2002](https://discourse.paraview.org/u/patchett2002)\
**Replies:** 0\
**Last updated:** [March 14, 2023, 2:57pm UTC](https://discourse.paraview.org/t/change-extents-using-paraview-python/11626 "2023-03-14T14:57:05Z")

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Hello, I’ve been working at data wrangling a rather large data set (just under an exabyte) and am on my last bit of transformation to get it working for visualization on a smaller supercomputer. My problem is that I have…

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## [vtkUnstructuredGrid vtkMultiBlockDataSet GetPoints](https://discourse.paraview.org/t/vtkunstructuredgrid-vtkmultiblockdataset-getpoints/11614)

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**Author:** [@Rigel](https://discourse.paraview.org/u/Rigel)\
**Replies:** 0\
**Last updated:** [March 13, 2023, 4:37pm UTC](https://discourse.paraview.org/t/vtkunstructuredgrid-vtkmultiblockdataset-getpoints/11614 "2023-03-13T16:37:39Z")

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Hi, I have a vtkUnstructuredGrid dataset, for which the following works: data.GetOutput().GetPoints().GetData() However, the dataset becomes a vtkMultiBlockDataSet after passing through the vtkAngularPeriodicFilter. N…

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## [vtkAngularPeriodicFilter vtkCutter](https://discourse.paraview.org/t/vtkangularperiodicfilter-vtkcutter/11465)

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**Author:** [@Rigel](https://discourse.paraview.org/u/Rigel)\
**Replies:** 5\
**Last updated:** [March 13, 2023, 10:26am UTC](https://discourse.paraview.org/t/vtkangularperiodicfilter-vtkcutter/11465 "2023-03-13T10:26:02Z")

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Hi, I have a 3D VTK dataset and I want to post-process it in a Python script (using pvbatch). Everything works well up to the application of the vtkAngularPeriodicFilter: # Loop through snapshots for i in range(valid\_i…

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## [Get the profile/shape/outline of several polygons](https://discourse.paraview.org/t/get-the-profile-shape-outline-of-several-polygons/11599)

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**Author:** [@Marek-Muchow](https://discourse.paraview.org/u/Marek-Muchow)\
**Replies:** 2\
**Last updated:** [March 13, 2023, 9:44am UTC](https://discourse.paraview.org/t/get-the-profile-shape-outline-of-several-polygons/11599 "2023-03-13T09:44:04Z")

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Hi, I have 3D polygonal vtk data, which I want to reduce to 2D and then get the outline/profile of that shape. The latter is what I struggle to archive. My best bet yet is use the Calculator (Coordinate Results and use…

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## [Script for retrieving vtk data and manipulating in Python](https://discourse.paraview.org/t/script-for-retrieving-vtk-data-and-manipulating-in-python/11610)

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**Author:** [@phivos](https://discourse.paraview.org/u/phivos)\
**Replies:** 2\
**Last updated:** [March 13, 2023, 9:07am UTC](https://discourse.paraview.org/t/script-for-retrieving-vtk-data-and-manipulating-in-python/11610 "2023-03-13T09:07:19Z")

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Hi everybody, I have temporal and spacial data saved from a simulation in vtk files. The dataset consists of almost a million points in the domain, and temporal results of about 1000 timesteps. I can do the analysis th…

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## [Line Integral Convolusion](https://discourse.paraview.org/t/line-integral-convolusion/11603)

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**Author:** [@iiskxndar](https://discourse.paraview.org/u/iiskxndar)\
**Replies:** 4\
**Last updated:** [March 13, 2023, 12:18am UTC](https://discourse.paraview.org/t/line-integral-convolusion/11603 "2023-03-13T00:18:26Z")

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Hi, I am new here. I am interested to learn how to plot a 2D line integral convolusion given x, y, z coordinate and its respective u, v, w velocities. I am doing this with the purpose to find the location of vorticity. I…

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## [vtkAngularPeriodicFilter vtkCutter 2](https://discourse.paraview.org/t/vtkangularperiodicfilter-vtkcutter-2/11532)

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**Author:** [@Rigel](https://discourse.paraview.org/u/Rigel)\
**Replies:** 1\
**Last updated:** [March 12, 2023, 12:50pm UTC](https://discourse.paraview.org/t/vtkangularperiodicfilter-vtkcutter-2/11532 "2023-03-12T12:50:13Z")

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Hi, I have a 3D VTK dataset (on the form of a 45° wedge) and I want to post-process it in a Python script (using pvbatch). I apply the following filters: # Apply angular periodic filter print("\\tApplying angular period…

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## [Multiple slices at different time steps](https://discourse.paraview.org/t/multiple-slices-at-different-time-steps/11605)

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**Author:** [@Hussein\_Kokash](https://discourse.paraview.org/u/Hussein_Kokash)\
**Replies:** 2\
**Last updated:** [March 10, 2023, 4:49pm UTC](https://discourse.paraview.org/t/multiple-slices-at-different-time-steps/11605 "2023-03-10T16:49:11Z")

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Hello all, I have a case which I would like to view contour of slices at different location and at different time steps, for example, slice1 (x=0.1 and time=6s), slice2 (x=0.2 and time=7s) and show slice1 and slice2 in …

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