# ParaView Support

**URL:** https://discourse.paraview.org/c/paraview-support/7.md?page=130

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

**Page:** 131

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## [how to combine mesh to one](https://discourse.paraview.org/t/how-to-combine-mesh-to-one/8065)

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**Author:** [@sofeiya2021](https://discourse.paraview.org/u/sofeiya2021)\
**Replies:** 7\
**Last updated:** [September 23, 2021, 9:24am UTC](https://discourse.paraview.org/t/how-to-combine-mesh-to-one/8065 "2021-09-23T09:24:44Z")

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mesh is my vtu file ,the represention is wireframe, 2.flux is the glyph filter of mesh.vtu file, it shows the vector of mesh.vtu file 3.we want the combine result of mesh.vtu and flux,as follow: but as you c…

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## [Group of \`pcd\` files not loading as time series](https://discourse.paraview.org/t/group-of-pcd-files-not-loading-as-time-series/8055)

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**Author:** [@Peter\_Makhalov](https://discourse.paraview.org/u/Peter_Makhalov)\
**Replies:** 1\
**Last updated:** [September 23, 2021, 7:24am UTC](https://discourse.paraview.org/t/group-of-pcd-files-not-loading-as-time-series/8055 "2021-09-23T07:24:30Z")

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Hi, I have a group of pcd files (point clouds) named like 000cloud.pdc, 001cloud.pcd, .. etc. They are recognized as a group in file loader, but when loaded, only the first cloud (i.e. 000cloud.pcd) is shown, time span…

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## [Convert d3plot to vtk format](https://discourse.paraview.org/t/convert-d3plot-to-vtk-format/8050)

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**Author:** [@ChaoW95](https://discourse.paraview.org/u/ChaoW95)\
**Replies:** 2\
**Last updated:** [September 22, 2021, 8:00pm UTC](https://discourse.paraview.org/t/convert-d3plot-to-vtk-format/8050 "2021-09-22T20:00:25Z")

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I have a d3plot output file from LS-DYNA. I can load this d3plot into paraview. As you can see paraview creates a Multi-block Dataset to represent the d3plot. Under this multi-block Dataset, this is one part called…

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## [Blanking in AMR datasets](https://discourse.paraview.org/t/blanking-in-amr-datasets/8048)

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**Author:** [@elynch](https://discourse.paraview.org/u/elynch)\
**Replies:** 1\
**Last updated:** [September 22, 2021, 3:03am UTC](https://discourse.paraview.org/t/blanking-in-amr-datasets/8048 "2021-09-22T03:03:35Z")

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I’m trying to understand how cell blanking works in AMR datasets. I’m using the script below to generate a dataset with two uniform grid blocks. I write those grids out as a vtkOverlappingAMR dataset and as a multi-blo…

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## [vthb file structure](https://discourse.paraview.org/t/vthb-file-structure/7224)

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**Author:** [@henry2004y](https://discourse.paraview.org/u/henry2004y)\
**Replies:** 18\
**Last updated:** [September 21, 2021, 3:55pm UTC](https://discourse.paraview.org/t/vthb-file-structure/7224 "2021-09-21T15:55:37Z")

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Hi, I am learning about the structure of the VTK AMR file with suffix .vthb. As I now understand it, the top level meta data with \*.vthb contains the base grid information, and the refined AMR boxes on each subsequent l…

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## [Paraview 5.9 Freezes when opening python shell](https://discourse.paraview.org/t/paraview-5-9-freezes-when-opening-python-shell/7826)

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**Author:** [@Jared\_Blanchard](https://discourse.paraview.org/u/Jared_Blanchard)\
**Replies:** 2\
**Last updated:** [September 21, 2021, 9:51am UTC](https://discourse.paraview.org/t/paraview-5-9-freezes-when-opening-python-shell/7826 "2021-09-21T09:51:47Z")

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I’m running Ubuntu 20.04 I downloaded the Paraview .tar.gz file from the Downloads page and extracted into a directory inside Downloads. When I run the paraview executable within bin/ the GUI appears and works well unti…

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## [Exodus file not loading correctly](https://discourse.paraview.org/t/exodus-file-not-loading-correctly/7972)

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**Author:** [@woodscn](https://discourse.paraview.org/u/woodscn)\
**Replies:** 12\
**Last updated:** [September 20, 2021, 6:32pm UTC](https://discourse.paraview.org/t/exodus-file-not-loading-correctly/7972 "2021-09-20T18:32:43Z")

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I have an Exodus file that is behaving strangely when I attempt to load it in Paraview. (Windows, MPI, 5.9.1) When I open the file, at least one vector-valued point field loads as all zeros, which is incorrect. Interest…

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## [Higher-order meshes render "speckled"](https://discourse.paraview.org/t/higher-order-meshes-render-speckled/6108)

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**Author:** [@GregVernon](https://discourse.paraview.org/u/GregVernon)\
**Replies:** 18\
**Last updated:** [September 20, 2021, 6:21pm UTC](https://discourse.paraview.org/t/higher-order-meshes-render-speckled/6108 "2021-09-20T18:21:02Z")

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See attached Exodus file comprised of quadratic hexahedral elements (Hex27). Whenever a non-zero Nonlinear Subdivision Level is used, to show the curved elements, “speckles” appear on the surfaces and the surface edges …

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## [A VTK error during make](https://discourse.paraview.org/t/a-vtk-error-during-make/8017)

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**Author:** [@Chong\_ZHENG](https://discourse.paraview.org/u/Chong_ZHENG)\
**Replies:** 7\
**Last updated:** [September 20, 2021, 6:19pm UTC](https://discourse.paraview.org/t/a-vtk-error-during-make/8017 "2021-09-20T18:19:08Z")

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I have the following error when I tried to make it, please help. .../VTK/ThirdParty/hdf5/vtkhdf5/src/H5Oint.c:358:12: error: implicit declaration of function 'vtkhdf5\_H5CX\_get\_ohdr\_flags' is invalid in C99 \[-Werror,-Wim…

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## [contact area](https://discourse.paraview.org/t/contact-area/8035)

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**Author:** [@Baraa\_Daher](https://discourse.paraview.org/u/Baraa_Daher)\
**Replies:** 0\
**Last updated:** [September 20, 2021, 4:45pm UTC](https://discourse.paraview.org/t/contact-area/8035 "2021-09-20T16:45:53Z")

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Hey! I have contact maps of two models in which I’m trying to measure the contact centre location of by calculating the centroid of the closest 200mm^2. Any idea how to set the area of contact to 200mm^2?

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## [pvpython macOS no rendering](https://discourse.paraview.org/t/pvpython-macos-no-rendering/8020)

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**Author:** [@massisenergy](https://discourse.paraview.org/u/massisenergy)\
**Replies:** 4\
**Last updated:** [September 20, 2021, 2:38pm UTC](https://discourse.paraview.org/t/pvpython-macos-no-rendering/8020 "2021-09-20T14:38:51Z")

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Dear, I wish to batch process using pvpython but in my system (MacOS, 13' MBP, ParaView 5.9.1) no rendering window pops up when I try to reproduce the sphere example. I believe this might be due to the issue already men…

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## [Surface LIC doesn't work](https://discourse.paraview.org/t/surface-lic-doesnt-work/3296)

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**Author:** [@Klara](https://discourse.paraview.org/u/Klara)\
**Replies:** 11\
**Last updated:** [September 20, 2021, 11:52am UTC](https://discourse.paraview.org/t/surface-lic-doesnt-work/3296 "2021-09-20T11:52:03Z")

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Hi! Here’s what I’ve done so far: I loaded Surface LIC and enabled Auto Load, restarted Praview, loaded the simulation data (incompressible flow made in Simscale), extracted the internal mesh and set the coloring to U (…

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## [Extractor : Embedding point/vertex color in VTP base on current view ?](https://discourse.paraview.org/t/extractor-embedding-point-vertex-color-in-vtp-base-on-current-view/8030)

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**Author:** [@Nicholas\_Yue](https://discourse.paraview.org/u/Nicholas_Yue)\
**Replies:** 1\
**Last updated:** [September 20, 2021, 7:37am UTC](https://discourse.paraview.org/t/extractor-embedding-point-vertex-color-in-vtp-base-on-current-view/8030 "2021-09-20T07:37:18Z")

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Hi, I have been using Extractor to generate \*.pvtp sequence and bringing them into other packages for further visualisation and animation (purely geometry) I see that Paraview in it’s view port uses vertex color for di…

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## [Practicle Tracking in Paraview (DualSPHysics Lagrangian output/ VTK file)](https://discourse.paraview.org/t/practicle-tracking-in-paraview-dualsphysics-lagrangian-output-vtk-file/8023)

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**Author:** [@Shadman\_144](https://discourse.paraview.org/u/Shadman_144)\
**Replies:** 1\
**Last updated:** [September 20, 2021, 7:36am UTC](https://discourse.paraview.org/t/practicle-tracking-in-paraview-dualsphysics-lagrangian-output-vtk-file/8023 "2021-09-20T07:36:06Z")

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Hi there. Thank you for your consideration. I have run into a problem while trying to use a streamline/particle tracer filter in ParaView with the DualSPHysics output. Hi there. I want to track the particles using Pa…

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## [unable to allocate xxxxx elements of size x bytes.](https://discourse.paraview.org/t/unable-to-allocate-xxxxx-elements-of-size-x-bytes/7887)

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**Author:** [@zjqf](https://discourse.paraview.org/u/zjqf)\
**Replies:** 1\
**Last updated:** [September 18, 2021, 7:06pm UTC](https://discourse.paraview.org/t/unable-to-allocate-xxxxx-elements-of-size-x-bytes/7887 "2021-09-18T19:06:35Z")

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I have a trouble in opening vtk file. Could anyone help me? I have 16.5G and 7G vtk file, paraview can not open them and get this error. ERROR: In c:\\bbd\\b51c3c7f\\source-paraview\\vtk\\common\\core\\vtkDataArrayTemplate.tx…

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## [Failing to compile ParaView 5.8.0 with Spack on Cori](https://discourse.paraview.org/t/failing-to-compile-paraview-5-8-0-with-spack-on-cori/7872)

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**Author:** [@mdorier](https://discourse.paraview.org/u/mdorier)\
**Replies:** 9\
**Last updated:** [September 18, 2021, 7:03pm UTC](https://discourse.paraview.org/t/failing-to-compile-paraview-5-8-0-with-spack-on-cori/7872 "2021-09-18T19:03:41Z")

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Hi, So far I have been compiling ParaView 5.8.0 on NERSC’s Cori supercomputer by cloning it and calling cmake manually. I have been trying to get the same build working with spack, but the build fails. Here is how I bu…

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## [unable to run xdmf file in paraview](https://discourse.paraview.org/t/unable-to-run-xdmf-file-in-paraview/8026)

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**Author:** [@makeabhishek](https://discourse.paraview.org/u/makeabhishek)\
**Replies:** 0\
**Last updated:** [September 18, 2021, 2:06pm UTC](https://discourse.paraview.org/t/unable-to-run-xdmf-file-in-paraview/8026 "2021-09-18T14:06:38Z")

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I tried to run an XDMF file in ParaView 5.9, but it’s not responding. There are three (i) xdmf3ReaderS (ii) Xdmf3ReaderT (iii) xdmf Reader. I am not sure the purpose of these three different readers and when to use them. …

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## [File/path names with special characters on Windows systems](https://discourse.paraview.org/t/file-path-names-with-special-characters-on-windows-systems/6070)

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**Author:** [@cobo](https://discourse.paraview.org/u/cobo)\
**Replies:** 12\
**Last updated:** [September 17, 2021, 9:20am UTC](https://discourse.paraview.org/t/file-path-names-with-special-characters-on-windows-systems/6070 "2021-09-17T09:20:27Z")

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Just found out that ParaView on a Windows system is not able to deal with folder and file names containing characters like ä, ö, ü, é, à etc.: They are simply “ignored”! On my Linux system this does not seem to be a prob…

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## [Delaunay3D ("large" point cloud)](https://discourse.paraview.org/t/delaunay3d-large-point-cloud/8015)

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**Author:** [@icebreakersours](https://discourse.paraview.org/u/icebreakersours)\
**Replies:** 1\
**Last updated:** [September 17, 2021, 8:35am UTC](https://discourse.paraview.org/t/delaunay3d-large-point-cloud/8015 "2021-09-17T08:35:55Z")

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Hello: I have a point cloud with millions of points in it and the points have scalars/vectors associated with them. Since I can’t do a whole lot of post-processing on a point cloud, I tried using Delaunay3D filter to en…

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## [problems downloading PARAVIEW training datasets](https://discourse.paraview.org/t/problems-downloading-paraview-training-datasets/8010)

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**Author:** [@chisley](https://discourse.paraview.org/u/chisley)\
**Replies:** 1\
**Last updated:** [September 17, 2021, 8:26am UTC](https://discourse.paraview.org/t/problems-downloading-paraview-training-datasets/8010 "2021-09-17T08:26:34Z")

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Hello. I’ve downloaded PARAVIEW desktop for the Mac Pro running OSX Big Sur 11.5.1. I’ve also downloaded the documentation and test datasets in both .zip and .tar archival formats. The documentation downloads fine, bu…

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## [OS Error with undefined symbol in MeshReader\_SM.so](https://discourse.paraview.org/t/os-error-with-undefined-symbol-in-meshreader-sm-so/7989)

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**Author:** [@rasunag27](https://discourse.paraview.org/u/rasunag27)\
**Replies:** 1\
**Last updated:** [September 17, 2021, 8:15am UTC](https://discourse.paraview.org/t/os-error-with-undefined-symbol-in-meshreader-sm-so/7989 "2021-09-17T08:15:31Z")

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Dear All, I am working with OpenFOAM v5 and I am trying to automate the simulations based on input request provided to flask. For this purpose, I have created a python file for flask and have provided the OpenFOAM func…

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## [Importing 2D structured cartesian mesh from multiple xdmf/hdf5 data files](https://discourse.paraview.org/t/importing-2d-structured-cartesian-mesh-from-multiple-xdmf-hdf5-data-files/7996)

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**Author:** [@bkcampb](https://discourse.paraview.org/u/bkcampb)\
**Replies:** 2\
**Last updated:** [September 16, 2021, 7:34pm UTC](https://discourse.paraview.org/t/importing-2d-structured-cartesian-mesh-from-multiple-xdmf-hdf5-data-files/7996 "2021-09-16T19:34:48Z")

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I am trying to construct a 2D surface from a series of data files that each contain a portion of the structure rectangular mesh. I’d like paraview to read in each of the files and merge them into a single surface mesh. …

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## [Paraview crashing when trying to select cells](https://discourse.paraview.org/t/paraview-crashing-when-trying-to-select-cells/7968)

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**Author:** [@Max\_Amer](https://discourse.paraview.org/u/Max_Amer)\
**Replies:** 4\
**Last updated:** [September 16, 2021, 9:13am UTC](https://discourse.paraview.org/t/paraview-crashing-when-trying-to-select-cells/7968 "2021-09-16T09:13:59Z")

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Hello, I am not very experienced with ParaView, but today I got a segmentation fault and the program crashed when using a feature that I have used many times with other projects. I’ll explain the steps I follow that lead…

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## [openvdb format writter](https://discourse.paraview.org/t/openvdb-format-writter/7939)

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**Author:** [@aquanaut](https://discourse.paraview.org/u/aquanaut)\
**Replies:** 12\
**Last updated:** [September 15, 2021, 4:32pm UTC](https://discourse.paraview.org/t/openvdb-format-writter/7939 "2021-09-15T16:32:35Z")

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Dear developer,how long can we use the vtk-to-vdb exporter in Paraview?

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## [Calculate Streamline Density](https://discourse.paraview.org/t/calculate-streamline-density/7997)

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**Author:** [@woodscn](https://discourse.paraview.org/u/woodscn)\
**Replies:** 2\
**Last updated:** [September 15, 2021, 4:31pm UTC](https://discourse.paraview.org/t/calculate-streamline-density/7997 "2021-09-15T16:31:24Z")

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As you can see in the picture, the streamlines are squeezed together in the region of the bubbles. I’m interested in displaying the degree to which they are squeezed; something like a streamline density? Does anyone have…

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## [Identifying streamlines from exported CSV file](https://discourse.paraview.org/t/identifying-streamlines-from-exported-csv-file/113)

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**Author:** [@mhowell](https://discourse.paraview.org/u/mhowell)\
**Replies:** 3\
**Last updated:** [September 15, 2021, 9:48am UTC](https://discourse.paraview.org/t/identifying-streamlines-from-exported-csv-file/113 "2021-09-15T09:48:28Z")

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Hi, when saving streamlines to a csv file is there an easy way to determine which data points correspond to a single particle? I’m trying to take the csv data into unity to create a vr animation of streamlines, but I’m …

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## [Start trace does not save my probe location selection](https://discourse.paraview.org/t/start-trace-does-not-save-my-probe-location-selection/7962)

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**Author:** [@babouletatou](https://discourse.paraview.org/u/babouletatou)\
**Replies:** 6\
**Last updated:** [September 15, 2021, 9:31am UTC](https://discourse.paraview.org/t/start-trace-does-not-save-my-probe-location-selection/7962 "2021-09-15T09:31:46Z")

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Hi, so I would like to have some help about this problem: I’d like to create a macro which could give me the pressure using probe location, but even if during start trace I do select the probe location point to give me …

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## [Import Geometries and Transform them programmatically](https://discourse.paraview.org/t/import-geometries-and-transform-them-programmatically/7998)

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**Author:** [@supervinci86](https://discourse.paraview.org/u/supervinci86)\
**Replies:** 0\
**Last updated:** [September 14, 2021, 3:06pm UTC](https://discourse.paraview.org/t/import-geometries-and-transform-them-programmatically/7998 "2021-09-14T15:06:09Z")

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Good afternoon, I would need to import a set of geometries (let’s assume \*.stl files) and, for each of them, I’d like to perform a specific transformation (let’s say translation and rotation only). FYI total number of f…

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## [Smooth Filter](https://discourse.paraview.org/t/smooth-filter/7994)

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**Author:** [@r123](https://discourse.paraview.org/u/r123)\
**Replies:** 0\
**Last updated:** [September 14, 2021, 12:10pm UTC](https://discourse.paraview.org/t/smooth-filter/7994 "2021-09-14T12:10:51Z")

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I am using the “smooth filter” in ParaView, but it divides my geometry as you can see in the following image: Is there any way that during smoothing, ParaView doesn’t divide the geometry?

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## [Issue with remote volume rendering using OptiX pathtracer](https://discourse.paraview.org/t/issue-with-remote-volume-rendering-using-optix-pathtracer/7984)

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**Author:** [@ma-sadeghi](https://discourse.paraview.org/u/ma-sadeghi)\
**Replies:** 2\
**Last updated:** [September 14, 2021, 1:58am UTC](https://discourse.paraview.org/t/issue-with-remote-volume-rendering-using-optix-pathtracer/7984 "2021-09-14T01:58:40Z")

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Hi, I’m trying to do remote volume rendering of a simple TIF volumetric image, but upon activating ray tracing using the OptiX pathtracer, I get the following error message serverside: ( 356.520s) \[pvserver \] …

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