# ParaView Support **URL:** https://discourse.paraview.org/c/paraview-support/7.md?page=181 [Latest](https://discourse.paraview.org/latest.md) · [Categories](https://discourse.paraview.org/categories.md) · [Tags](https://discourse.paraview.org/tags.md) **Page:** 182 --- ## [ParaView Cell Centers possible unstable program behavior](https://discourse.paraview.org/t/paraview-cell-centers-possible-unstable-program-behavior/4310)
**Author:** [@Andrei](https://discourse.paraview.org/u/Andrei)\ **Replies:** 6\ **Last updated:** [May 13, 2020, 6:12pm UTC](https://discourse.paraview.org/t/paraview-cell-centers-possible-unstable-program-behavior/4310 "2020-05-13T18:12:37Z")
I noticed strange behavior of Cell Centers Filter. It sometimes outputs unpredictable non-reproducible random results. I recorded this on video . The FE mesh at stages in time has the same topology. See row 4 on… --- ## [Set default folder for File, Open ?](https://discourse.paraview.org/t/set-default-folder-for-file-open/1160)
**Author:** [@Dr\_Nefario](https://discourse.paraview.org/u/Dr_Nefario)\ **Replies:** 4\ **Last updated:** [May 13, 2020, 5:21am UTC](https://discourse.paraview.org/t/set-default-folder-for-file-open/1160 "2020-05-13T05:21:49Z")
Is it possible to set a default folder for File, Open command ? If not, I would suggest an option in Settings to do this. --- ## [Convert Float64 point coordinates to Float32](https://discourse.paraview.org/t/convert-float64-point-coordinates-to-float32/4316)
**Author:** [@CapLek](https://discourse.paraview.org/u/CapLek)\ **Replies:** 1\ **Last updated:** [May 13, 2020, 2:12am UTC](https://discourse.paraview.org/t/convert-float64-point-coordinates-to-float32/4316 "2020-05-13T02:12:03Z")
How do I convert point coordinates which are in Float64 array to Float32 without any impact on mesh connectivity and integrity? Thank you. --- ## [Boundingruler/Xticks/Minorgridlines for Lineplot](https://discourse.paraview.org/t/boundingruler-xticks-minorgridlines-for-lineplot/4299)
**Author:** [@vrkssai](https://discourse.paraview.org/u/vrkssai)\ **Replies:** 5\ **Last updated:** [May 13, 2020, 2:06am UTC](https://discourse.paraview.org/t/boundingruler-xticks-minorgridlines-for-lineplot/4299 "2020-05-13T02:06:42Z")
Hi all I’m looking for xticks/minorgridlines/bounding ruler type options for plotting 1D Lineplots. For example: for a 1D Finite Volume problem say, I want to represent the ends of each cell (My need is slightly more co… --- ## [Surf plot](https://discourse.paraview.org/t/surf-plot/4319)
**Author:** [@Marf](https://discourse.paraview.org/u/Marf)\ **Replies:** 1\ **Last updated:** [May 13, 2020, 1:42am UTC](https://discourse.paraview.org/t/surf-plot/4319 "2020-05-13T01:42:03Z")
This is a Matlab generated surf plot. I want to plot like it in Paraview. Please let me know where is the option to plot this in Paraview. I have vtk format files. Thank you for your consideration. --- ## [How to run Paraview](https://discourse.paraview.org/t/how-to-run-paraview/4312)
**Author:** [@Abhik\_Roy\_Chaudhury](https://discourse.paraview.org/u/Abhik_Roy_Chaudhury)\ **Replies:** 2\ **Last updated:** [May 12, 2020, 4:00pm UTC](https://discourse.paraview.org/t/how-to-run-paraview/4312 "2020-05-12T16:00:59Z")
Recently I have downloaded Paraview to my laptop. But, I am unable to run it .Seeking the help to start it. Please help me with the set up procedure. --- ## [Hardware recommendation for medium size data sets](https://discourse.paraview.org/t/hardware-recommendation-for-medium-size-data-sets/4272)
**Author:** [@nopech](https://discourse.paraview.org/u/nopech)\ **Replies:** 2\ **Last updated:** [May 12, 2020, 3:12pm UTC](https://discourse.paraview.org/t/hardware-recommendation-for-medium-size-data-sets/4272 "2020-05-12T15:12:07Z")
Hello everyone I frequently post process data sets with around 50Mio. unstructured cells (OpenFOAM decomposed data). However i just can’t get my head around what would be the most efficient hardware. When I use a CPU c… --- ## [Create Polyline Source](https://discourse.paraview.org/t/create-polyline-source/4306)
**Author:** [@anandrewli](https://discourse.paraview.org/u/anandrewli)\ **Replies:** 2\ **Last updated:** [May 12, 2020, 1:56am UTC](https://discourse.paraview.org/t/create-polyline-source/4306 "2020-05-12T01:56:48Z")
Hello, I’m trying to create a polyline source in ParaView 5.8.0. I went to Sources \> Geometric Shapes \> Poly Line Source. In the dialog, why I can’t change the value of the X, Y, Z of the points? I want to assign new… --- ## [PVPython Seg Fault when creting RenderView](https://discourse.paraview.org/t/pvpython-seg-fault-when-creting-renderview/4230)
**Author:** [@ShogunHirei](https://discourse.paraview.org/u/ShogunHirei)\ **Replies:** 5\ **Last updated:** [May 12, 2020, 1:54am UTC](https://discourse.paraview.org/t/pvpython-seg-fault-when-creting-renderview/4230 "2020-05-12T01:54:34Z")
Greetings, all. I am working with OpenFOAM for CFD simulations and using Paraview for post-processing and saving data from the simulation. This time I am running a bunch of simulations and using pvpython to save data. … --- ## [Seg fault reasons](https://discourse.paraview.org/t/seg-fault-reasons/4300)
**Author:** [@ShogunHirei](https://discourse.paraview.org/u/ShogunHirei)\ **Replies:** 5\ **Last updated:** [May 12, 2020, 1:44am UTC](https://discourse.paraview.org/t/seg-fault-reasons/4300 "2020-05-12T01:44:36Z")
Greetings everyone! I’m having problems with “Segmentation Fault (Core Dumped)” error, and I’m unable to find out why it is happening with my system, is there some way to find a log, or some way to track this error? K… --- ## [Axes Grid Edit not working](https://discourse.paraview.org/t/axes-grid-edit-not-working/4303)
**Author:** [@anandrewli](https://discourse.paraview.org/u/anandrewli)\ **Replies:** 2\ **Last updated:** [May 11, 2020, 6:08pm UTC](https://discourse.paraview.org/t/axes-grid-edit-not-working/4303 "2020-05-11T18:08:02Z")
Hello, I checked Axes Grid box under Annotations, and then click on the Edit button to the right. Nothing happens. The Edit bottom seems not working. I’m using ParaView 5.8.0. Could you give me some tips about how to mak… --- ## [XMF file for hdf5 data split over multiple files](https://discourse.paraview.org/t/xmf-file-for-hdf5-data-split-over-multiple-files/4302)
**Author:** [@matthieuschaller](https://discourse.paraview.org/u/matthieuschaller)\ **Replies:** 0\ **Last updated:** [May 11, 2020, 3:39pm UTC](https://discourse.paraview.org/t/xmf-file-for-hdf5-data-split-over-multiple-files/4302 "2020-05-11T15:39:20Z")
Hi all, I am handling large snapshot data that are split over multiple hdf5 files. That is a given array has the first N entries in a file then the next M entries in the next file and so on. When using a single file, I… --- ## [ParaView 5.7.0 from APT does not render results on Ubuntu 20.04, binaries work](https://discourse.paraview.org/t/paraview-5-7-0-from-apt-does-not-render-results-on-ubuntu-20-04-binaries-work/4283)
**Author:** [@MakisH](https://discourse.paraview.org/u/MakisH)\ **Replies:** 1\ **Last updated:** [May 11, 2020, 1:27pm UTC](https://discourse.paraview.org/t/paraview-5-7-0-from-apt-does-not-render-results-on-ubuntu-20-04-binaries-work/4283 "2020-05-11T13:27:33Z")
When opening any results (including the bundled examples) on ParaView 5.7.0 installed via APT on Ubuntu 20.04, the render view always remains blank. No errors are reported in any way. Downloading the same version (5.7.0… --- ## [surface potential map of molecule](https://discourse.paraview.org/t/surface-potential-map-of-molecule/4281)
**Author:** [@mfenley](https://discourse.paraview.org/u/mfenley)\ **Replies:** 1\ **Last updated:** [May 11, 2020, 5:05am UTC](https://discourse.paraview.org/t/surface-potential-map-of-molecule/4281 "2020-05-11T05:05:41Z")
Hi, I am trying to visualize a electrostatic potential on the surface of a molecule. I can read it the molecule and generate the surface. How do I color the surface with the input potential information. Can you provide … --- ## [Glyphs with Radius \< 0.01 don't show up](https://discourse.paraview.org/t/glyphs-with-radius-0-01-dont-show-up/4256)
**Author:** [@bastian](https://discourse.paraview.org/u/bastian)\ **Replies:** 2\ **Last updated:** [May 11, 2020, 4:25am UTC](https://discourse.paraview.org/t/glyphs-with-radius-0-01-dont-show-up/4256 "2020-05-11T04:25:50Z")
Here is a vtu-file containing two points which I wish to visualize as sphere-type glyphs. points.vtu (781 Bytes) So, I load the file, set representation → 3D Glyphs Glyph Type → Sphere Radius → 0.01 and it works fl… --- ## [Paraview 5.7 crash on connection configuration menu](https://discourse.paraview.org/t/paraview-5-7-crash-on-connection-configuration-menu/4263)
**Author:** [@kmilo9999](https://discourse.paraview.org/u/kmilo9999)\ **Replies:** 3\ **Last updated:** [May 11, 2020, 3:44am UTC](https://discourse.paraview.org/t/paraview-5-7-crash-on-connection-configuration-menu/4263 "2020-05-11T03:44:02Z")
Hi, I’m experiencing a GUI crash when trying to open the command connection configuration window. I reproduce it and save it as a gif. this is the log: praview\_5.7\_crash\_log.txt (4.9 KB) Can you reproduce it on you… --- ## [CSV files](https://discourse.paraview.org/t/csv-files/4288)
**Author:** [@Jessica\_Gabriele](https://discourse.paraview.org/u/Jessica_Gabriele)\ **Replies:** 1\ **Last updated:** [May 11, 2020, 3:37am UTC](https://discourse.paraview.org/t/csv-files/4288 "2020-05-11T03:37:12Z")
Hi, I’m trying to upload a CSV file created with Microsoft Excel. I have to represent the trend of C as the coordinates of the points x, y, z change. There are 4 columns in the file (x, y, z, C), I can’t import all four… --- ## [How To Specify Python Interpreter for ParaView](https://discourse.paraview.org/t/how-to-specify-python-interpreter-for-paraview/2424)
**Author:** [@ymjia](https://discourse.paraview.org/u/ymjia)\ **Replies:** 4\ **Last updated:** [May 9, 2020, 5:16am UTC](https://discourse.paraview.org/t/how-to-specify-python-interpreter-for-paraview/2424 "2020-05-09T05:16:34Z")
Hi, Guys, I have built a ParaView executable and added many python Macros to it. Then I want to distribute my executable to my friends. Everything works as expected except someone has Python 3.7 installed on his PC tha… --- ## [Contours have "cracks" at zones boundaries (partially solved)](https://discourse.paraview.org/t/contours-have-cracks-at-zones-boundaries-partially-solved/4290)
**Author:** [@liangwang0734](https://discourse.paraview.org/u/liangwang0734)\ **Replies:** 0\ **Last updated:** [May 8, 2020, 4:59pm UTC](https://discourse.paraview.org/t/contours-have-cracks-at-zones-boundaries-partially-solved/4290 "2020-05-08T16:59:16Z")
I have an unstructured mesh Hexahedron data (I have attached a slice of the grid). When I make contours in ParaView there are “cracks” at zones boundaries. Visit looks OK. Any idea how this could be improved? Edit 1 5… --- ## [Find Tecplot mesh cell closest to Probe Location](https://discourse.paraview.org/t/find-tecplot-mesh-cell-closest-to-probe-location/4289)
**Author:** [@tskiado](https://discourse.paraview.org/u/tskiado)\ **Replies:** 0\ **Last updated:** [May 8, 2020, 2:41pm UTC](https://discourse.paraview.org/t/find-tecplot-mesh-cell-closest-to-probe-location/4289 "2020-05-08T14:41:43Z")
Hi all! I have loaded a Tecplot file in Paraview. I would like to find the mesh cell closest to a probe location with known coordinates and the according indices of the mesh (grid coordinates). Is that possible? Thanks… --- ## [Color TemporalParticlesToPathlines by velocity as in StreamTracer](https://discourse.paraview.org/t/color-temporalparticlestopathlines-by-velocity-as-in-streamtracer/4243)
**Author:** [@kaiser](https://discourse.paraview.org/u/kaiser)\ **Replies:** 1\ **Last updated:** [May 8, 2020, 1:23am UTC](https://discourse.paraview.org/t/color-temporalparticlestopathlines-by-velocity-as-in-streamtracer/4243 "2020-05-08T01:23:22Z")
Hello, when using TemporalParticlesToPathlines, is there a way to color the pathlines by velocity, as is an option for the StreamTracer filter? The paths are pre-computed by the solver, so only their positions are read … --- ## [pv-5.8 build fails with protobuf\_generate](https://discourse.paraview.org/t/pv-5-8-build-fails-with-protobuf-generate/4250)
**Author:** [@olesenm](https://discourse.paraview.org/u/olesenm)\ **Replies:** 7\ **Last updated:** [May 7, 2020, 5:21pm UTC](https://discourse.paraview.org/t/pv-5-8-build-fails-with-protobuf-generate/4250 "2020-05-07T17:21:29Z")
The SUSE builds on leap15.1 keep failing with this type of error: CMake Error at build/ThirdParty/protobuf/lib64/cmake/paraview-5.8/protobuf-function.cmake:2 (protobuf\_generate): Unknown CMake command "protobuf\_generate… --- ## [Drawing isolines (unfilled) from VTK legacy files](https://discourse.paraview.org/t/drawing-isolines-unfilled-from-vtk-legacy-files/4269)
**Author:** [@rweed](https://discourse.paraview.org/u/rweed)\ **Replies:** 4\ **Last updated:** [May 7, 2020, 2:28pm UTC](https://discourse.paraview.org/t/drawing-isolines-unfilled-from-vtk-legacy-files/4269 "2020-05-07T14:28:19Z")
I’m trying to draw isolines (just the lines not filled) of some CFD data that I read from a series of VTK legacy ASCII files. The files load OK and I can view the mesh and the default color-filled images just fine. The p… --- ## [Unable to cycle timesteps with python on a decomposed case](https://discourse.paraview.org/t/unable-to-cycle-timesteps-with-python-on-a-decomposed-case/4274)
**Author:** [@Gambenius](https://discourse.paraview.org/u/Gambenius)\ **Replies:** 0\ **Last updated:** [May 6, 2020, 4:10pm UTC](https://discourse.paraview.org/t/unable-to-cycle-timesteps-with-python-on-a-decomposed-case/4274 "2020-05-06T16:10:06Z")
Hi everyone, I have a 140GB transient LES case of my FS Team to post process and i made some python scripts to print slices of the car in various places trough time. I am not able to cycle timesteps without reconstructi… --- ## [Exporting 3D Unstructured Grid and Vector Solutions from MATLAB PDE Toolbox to Paraview](https://discourse.paraview.org/t/exporting-3d-unstructured-grid-and-vector-solutions-from-matlab-pde-toolbox-to-paraview/4265)
**Author:** [@Ada12](https://discourse.paraview.org/u/Ada12)\ **Replies:** 5\ **Last updated:** [May 6, 2020, 8:56am UTC](https://discourse.paraview.org/t/exporting-3d-unstructured-grid-and-vector-solutions-from-matlab-pde-toolbox-to-paraview/4265 "2020-05-06T08:56:48Z")
Hey all, Before I start, I’m aware of a number of files in the MATLAB file exchange, however none of them seem to be able to export the full set of data correctly. Details on my attempts can be found here: I’m model… --- ## [ParaView Server with multiple Cores/GPus using mvapchi](https://discourse.paraview.org/t/paraview-server-with-multiple-cores-gpus-using-mvapchi/4209)
**Author:** [@kmilo9999](https://discourse.paraview.org/u/kmilo9999)\ **Replies:** 2\ **Last updated:** [May 6, 2020, 1:51am UTC](https://discourse.paraview.org/t/paraview-server-with-multiple-cores-gpus-using-mvapchi/4209 "2020-05-06T01:51:48Z")
Hi, For instance, I am using paraview 5.6.0 + mvapchi. I’m confused on how running pvserver in parallel works. If I want to use 4 GPUs on a single machine,using MPI I will have to run 4 pvserver jobs using the paramete… --- ## [ParaView crashes when trying to extract selection using a polyhedral VTU file (ascii or binary)](https://discourse.paraview.org/t/paraview-crashes-when-trying-to-extract-selection-using-a-polyhedral-vtu-file-ascii-or-binary/4260)
**Author:** [@smenon](https://discourse.paraview.org/u/smenon)\ **Replies:** 4\ **Last updated:** [May 6, 2020, 1:48am UTC](https://discourse.paraview.org/t/paraview-crashes-when-trying-to-extract-selection-using-a-polyhedral-vtu-file-ascii-or-binary/4260 "2020-05-06T01:48:52Z")
Here’s the workflow to reproduce the crash. Extract files in the zipped folder TestVTK. Open ParaView on Windows x64 and load the file “ascii.vtu” (note that “binary.vtu” crashes as well) Use frustum selection to selec… --- ## [Read the data from ANSYS Fluent](https://discourse.paraview.org/t/read-the-data-from-ansys-fluent/1540)
**Author:** [@szhao](https://discourse.paraview.org/u/szhao)\ **Replies:** 8\ **Last updated:** [May 6, 2020, 1:37am UTC](https://discourse.paraview.org/t/read-the-data-from-ansys-fluent/1540 "2020-05-06T01:37:51Z")
Hi, I was trying to import the data from ANSYS Fluent, I searched online said export the data as the EnSight file from Fluent and then change the extension .encase to .case manually. After importing the .case file, it … --- ## [Adding new field to mergeblock data](https://discourse.paraview.org/t/adding-new-field-to-mergeblock-data/4253)
**Author:** [@Mahdi\_Kooshkbaghi](https://discourse.paraview.org/u/Mahdi_Kooshkbaghi)\ **Replies:** 2\ **Last updated:** [May 5, 2020, 10:35pm UTC](https://discourse.paraview.org/t/adding-new-field-to-mergeblock-data/4253 "2020-05-05T22:35:25Z")
I have an issue adding new scalar field to the existing dataset. The simulation output is from NEK5000 code. First, I read the file, get the u and v field data. Then, Merge the blocks. Applied the servermanager.Fetch. N… --- ## [Problem with Plugin Source with vtkImageData](https://discourse.paraview.org/t/problem-with-plugin-source-with-vtkimagedata/4258)
**Author:** [@rafaelmarch3](https://discourse.paraview.org/u/rafaelmarch3)\ **Replies:** 1\ **Last updated:** [May 5, 2020, 2:19pm UTC](https://discourse.paraview.org/t/problem-with-plugin-source-with-vtkimagedata/4258 "2020-05-05T14:19:11Z")
This is a follow-up question to the one below: I managed to create a vtkImageData in a Programmable Source. Now I would like to pack this image creating in a Source plugin, as an alternative. So far, my RequestData m… [Previous page](https://discourse.paraview.org/c/paraview-support/7.md?page=180) [Next page](https://discourse.paraview.org/c/paraview-support/7.md?page=182)