# ParaView Support

**URL:** https://discourse.paraview.org/c/paraview-support/7.md?page=119

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**Page:** 120

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## [Parallel rendering - Opening large raw file](https://discourse.paraview.org/t/parallel-rendering-opening-large-raw-file/6805)

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**Author:** [@kmilo9999](https://discourse.paraview.org/u/kmilo9999)\
**Replies:** 1\
**Last updated:** [January 26, 2022, 8:41pm UTC](https://discourse.paraview.org/t/parallel-rendering-opening-large-raw-file/6805 "2022-01-26T20:41:35Z")

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Hello There, I am working on a cluste environment using parallel rendering. I am trying to open the follow dataset using 8 cores and 8 gpus and 360GB on ram http://fsm.sci.utah.edu:8000/open-scivis-datasets/isotropic\_…

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## [Is this possible to plot one point representing the average for n points instead of all points](https://discourse.paraview.org/t/is-this-possible-to-plot-one-point-representing-the-average-for-n-points-instead-of-all-points/8625)

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**Author:** [@Butanium](https://discourse.paraview.org/u/Butanium)\
**Replies:** 23\
**Last updated:** [January 26, 2022, 4:36pm UTC](https://discourse.paraview.org/t/is-this-possible-to-plot-one-point-representing-the-average-for-n-points-instead-of-all-points/8625 "2022-01-26T16:36:33Z")

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Hello, I’m making a project in which I have a huge CSV (~1M entries) representing timestamp and length. Plotting it with no processing is unreadable : I already made some test with python and Matplotlib and if inste…

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## [Problem with volume calculation](https://discourse.paraview.org/t/problem-with-volume-calculation/8318)

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**Author:** [@benediktB](https://discourse.paraview.org/u/benediktB)\
**Replies:** 1\
**Last updated:** [January 26, 2022, 11:05am UTC](https://discourse.paraview.org/t/problem-with-volume-calculation/8318 "2022-01-26T11:05:13Z")

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Dear community, I simulate bubble collapses. With a pvbatch-script I want to calculate the volume of the bubble. I use the precompiled version ParaView-5.10.0-RC1-osmesa-MPI-Linux-Python3.9-x86\_64 The following funct…

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## [Access to multi block dataset](https://discourse.paraview.org/t/access-to-multi-block-dataset/8606)

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**Author:** [@Captain\_Convergence](https://discourse.paraview.org/u/Captain_Convergence)\
**Replies:** 3\
**Last updated:** [January 26, 2022, 9:30am UTC](https://discourse.paraview.org/t/access-to-multi-block-dataset/8606 "2022-01-26T09:30:22Z")

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Dear Support, I am trying to pass the arrays data from a PlotOnSortedLines1 filter (where I applied previously a Merge Blocks filter) to python using the following approach: FindSource1 = FindSource(‘PlotOnSortedLines1…

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## [Saving data with time steps](https://discourse.paraview.org/t/saving-data-with-time-steps/8835)

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**Author:** [@chis54](https://discourse.paraview.org/u/chis54)\
**Replies:** 6\
**Last updated:** [January 26, 2022, 12:37am UTC](https://discourse.paraview.org/t/saving-data-with-time-steps/8835 "2022-01-26T00:37:53Z")

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I have a simulation with time steps that are not spaced evenly. I am using the save data to export my model at PLY files for each time step. Is there a way to also export the time values per step so that I can post proce…

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## [Animating a collection](https://discourse.paraview.org/t/animating-a-collection/8838)

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**Author:** [@PetrKryslUCSD](https://discourse.paraview.org/u/PetrKryslUCSD)\
**Replies:** 6\
**Last updated:** [January 25, 2022, 6:08pm UTC](https://discourse.paraview.org/t/animating-a-collection/8838 "2022-01-25T18:08:54Z")

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Here is my pvd file: \<?xml version="1.0" encoding="utf-8"?\> \<VTKFile type="Collection" version="1.0" byte\_order="LittleEndian" compressor="vtkZLibDataCompressor"\> \<Collection\> \<DataSet timestep="0.0" part="0" file…

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## [Issue exposing vtkMultiBlock structure from PVD reader](https://discourse.paraview.org/t/issue-exposing-vtkmultiblock-structure-from-pvd-reader/8840)

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**Author:** [@Azrael3000](https://discourse.paraview.org/u/Azrael3000)\
**Replies:** 0\
**Last updated:** [January 25, 2022, 5:04pm UTC](https://discourse.paraview.org/t/issue-exposing-vtkmultiblock-structure-from-pvd-reader/8840 "2022-01-25T17:04:09Z")

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Dear all, I am trying to use Python to get the structure of a vtkMultiBlockDataSet which lives on a server that I connect to using pvserver. The structure of the Multiblock is: # Multiblock …

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## [controlling slices in Slice View](https://discourse.paraview.org/t/controlling-slices-in-slice-view/8799)

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**Author:** [@BikerJoe](https://discourse.paraview.org/u/BikerJoe)\
**Replies:** 5\
**Last updated:** [January 25, 2022, 2:57pm UTC](https://discourse.paraview.org/t/controlling-slices-in-slice-view/8799 "2022-01-25T14:57:21Z")

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Is it possible to control the Z slice with better control than dragging the mouse? Such as controlling the Z steps in a defined increment. I want to scan through my Z steps looking for anomalies, and sometimes the anoma…

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## [Access serverside VTK Object with Python](https://discourse.paraview.org/t/access-serverside-vtk-object-with-python/8831)

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**Author:** [@Azrael3000](https://discourse.paraview.org/u/Azrael3000)\
**Replies:** 2\
**Last updated:** [January 25, 2022, 7:28am UTC](https://discourse.paraview.org/t/access-serverside-vtk-object-with-python/8831 "2022-01-25T07:28:11Z")

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Hi have a macro that I use to visualize my data with. What I do is take all sources, check whether they are vtkPVDReader and then analyze the data that was read by that reader. On client side this is simply done using m…

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## [Remote Visualization](https://discourse.paraview.org/t/remote-visualization/8811)

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**Author:** [@rconner15](https://discourse.paraview.org/u/rconner15)\
**Replies:** 8\
**Last updated:** [January 24, 2022, 11:36am UTC](https://discourse.paraview.org/t/remote-visualization/8811 "2022-01-24T11:36:05Z")

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Hello, I would like to use Paraview to visualize results on a remote server, but l’m at a loss for how to set it up. I’ve tried following the instructions laid out in the user guide as well as those from the pdf linked …

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## [LIGGGHTS output viewing](https://discourse.paraview.org/t/liggghts-output-viewing/8825)

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**Author:** [@mabrouka](https://discourse.paraview.org/u/mabrouka)\
**Replies:** 1\
**Last updated:** [January 24, 2022, 10:53am UTC](https://discourse.paraview.org/t/liggghts-output-viewing/8825 "2022-01-24T10:53:37Z")

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Hi everyone I ran a LIGGGHTS DEM code and want to see results on Paraview; However I get the following error CFDEM-PUBLIC-5.x/run/out0.stl at line 3: unable to read STL vertex. The following attachment is the output s…

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## [background error in raytracing](https://discourse.paraview.org/t/background-error-in-raytracing/7898)

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**Author:** [@wyan](https://discourse.paraview.org/u/wyan)\
**Replies:** 12\
**Last updated:** [January 24, 2022, 9:58am UTC](https://discourse.paraview.org/t/background-error-in-raytracing/7898 "2022-01-24T09:58:57Z")

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With paraview 5.9.1, I have a problem where the bundled ospray. Rendered images contain random errors where a large region of grey color may appear in the saved snapshot image. One such image is attached as an example. …

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## [Control of screenshot domain extent using CameraViewAngle](https://discourse.paraview.org/t/control-of-screenshot-domain-extent-using-cameraviewangle/8826)

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**Author:** [@ndeak](https://discourse.paraview.org/u/ndeak)\
**Replies:** 0\
**Last updated:** [January 22, 2022, 6:57pm UTC](https://discourse.paraview.org/t/control-of-screenshot-domain-extent-using-cameraviewangle/8826 "2022-01-22T18:57:56Z")

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Hello, I am currently working on creating images of 2D cuts of my data using a python script generated by the Paraview trace functionality. My goal is to zoom in on certain areas of my 2D cut and take screenshots. I hav…

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## [Achieving left-handed axes (z down, x right, y in)](https://discourse.paraview.org/t/achieving-left-handed-axes-z-down-x-right-y-in/8813)

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**Author:** [@Victor\_Koehne\_Ramalh](https://discourse.paraview.org/u/Victor_Koehne_Ramalh)\
**Replies:** 2\
**Last updated:** [January 21, 2022, 4:13pm UTC](https://discourse.paraview.org/t/achieving-left-handed-axes-z-down-x-right-y-in/8813 "2022-01-21T16:13:24Z")

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Hey all, I am trying to plot a velocity field of the subsurface in geophysical standards, which is a left-handed axis, i.e. z positive downwards, x positive to the right, and y positive inwards. The thing is Paraview use…

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## [animation (harmonic motion)](https://discourse.paraview.org/t/animation-harmonic-motion/8803)

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**Author:** [@tig](https://discourse.paraview.org/u/tig)\
**Replies:** 11\
**Last updated:** [January 21, 2022, 10:05am UTC](https://discourse.paraview.org/t/animation-harmonic-motion/8803 "2022-01-21T10:05:39Z")

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Hello, I’m trying to animate a “Magnitude/Phase” harmonic field. In particular NO time data is present in the data file, as it can be generated with a sinusoidal function. Example of a regular wave: in the annexed zipp…

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## [Following Tutorial but not getting similar results.](https://discourse.paraview.org/t/following-tutorial-but-not-getting-similar-results/8808)

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**Author:** [@seb](https://discourse.paraview.org/u/seb)\
**Replies:** 3\
**Last updated:** [January 20, 2022, 3:46pm UTC](https://discourse.paraview.org/t/following-tutorial-but-not-getting-similar-results/8808 "2022-01-20T15:46:38Z")

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Hello, I am trying to follow this tutorial linked below, but when I get to the simpleFoam command at 14:52 my results are completely different. For one all my forceCoeffes are 0. Which is not what is supposed to happen. …

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## [How to organize arrays into groups?](https://discourse.paraview.org/t/how-to-organize-arrays-into-groups/8802)

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**Author:** [@Petr\_Melnikov](https://discourse.paraview.org/u/Petr_Melnikov)\
**Replies:** 9\
**Last updated:** [January 20, 2022, 11:35am UTC](https://discourse.paraview.org/t/how-to-organize-arrays-into-groups/8802 "2022-01-20T11:35:44Z")

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Hi! I have a dataset of vtkUnstructuredGrid class with many point-centered arrays (several hundred). It is necessary to organize the arrays in such a way as to facilitate the searching and selecting, it is inconvenient …

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## [PVServer mismatch when starting with MPI Run:](https://discourse.paraview.org/t/pvserver-mismatch-when-starting-with-mpi-run/8330)

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**Author:** [@ramen\_newdals](https://discourse.paraview.org/u/ramen_newdals)\
**Replies:** 4\
**Last updated:** [January 20, 2022, 10:22am UTC](https://discourse.paraview.org/t/pvserver-mismatch-when-starting-with-mpi-run/8330 "2022-01-20T10:22:41Z")

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Hello All! When starting pvserver using mpirun as indicated in section 6.9 of the docs (6. Remote and parallel visualization — ParaView Documentation 5.9.1 documentation) and trying to connect from the paraview applicat…

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## [what's wrong with Multi-block Inspector View?The red block diagram always appears, even when I don't choose anything](https://discourse.paraview.org/t/whats-wrong-with-multi-block-inspector-view-the-red-block-diagram-always-appears-even-when-i-dont-choose-anything/8800)

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**Author:** [@sofeiya2021](https://discourse.paraview.org/u/sofeiya2021)\
**Replies:** 4\
**Last updated:** [January 20, 2022, 9:36am UTC](https://discourse.paraview.org/t/whats-wrong-with-multi-block-inspector-view-the-red-block-diagram-always-appears-even-when-i-dont-choose-anything/8800 "2022-01-20T09:36:35Z")

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The red block diagram always appears, even when I don’t choose anything

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## [Numbering of the incoming objects in the PythonCalculator](https://discourse.paraview.org/t/numbering-of-the-incoming-objects-in-the-pythoncalculator/8806)

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**Author:** [@Andrei](https://discourse.paraview.org/u/Andrei)\
**Replies:** 1\
**Last updated:** [January 20, 2022, 9:14am UTC](https://discourse.paraview.org/t/numbering-of-the-incoming-objects-in-the-pythoncalculator/8806 "2022-01-20T09:14:11Z")

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When using the PythonCalculator, is it possible to identify the numbering of the incoming objects? It means the matching Pipeline Browser objects to inputs\[0\], inputs\[1\], etc. As far as one can understand, by default thi…

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## [How to open my .dat file which is in tecplot format](https://discourse.paraview.org/t/how-to-open-my-dat-file-which-is-in-tecplot-format/8796)

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**Author:** [@Mohammed\_Niyasdeen](https://discourse.paraview.org/u/Mohammed_Niyasdeen)\
**Replies:** 7\
**Last updated:** [January 19, 2022, 5:52pm UTC](https://discourse.paraview.org/t/how-to-open-my-dat-file-which-is-in-tecplot-format/8796 "2022-01-19T17:52:53Z")

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I am trying to make a 3D plot using the .dat file which is in Tecplot format. I tried several questions similar to this and nothing solved my problem. How to 3D plot the attached file? My OS is windows 10, Paraview Ver…

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## [Transform property 'RotateAroundOriginTransform' not working in python](https://discourse.paraview.org/t/transform-property-rotatearoundorigintransform-not-working-in-python/8798)

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**Author:** [@rasunag27](https://discourse.paraview.org/u/rasunag27)\
**Replies:** 0\
**Last updated:** [January 19, 2022, 4:02pm UTC](https://discourse.paraview.org/t/transform-property-rotatearoundorigintransform-not-working-in-python/8798 "2022-01-19T16:02:21Z")

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Hi, I have an stl file which needs to be rotated about an axis with origin. For this, based on question asked previously, I used pv nightly version. From paraview, I can do it correctly, but I am facing a problem throu…

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## [pvpython layout1.SplitHorizontal](https://discourse.paraview.org/t/pvpython-layout1-splithorizontal/8797)

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**Author:** [@LuFuchs](https://discourse.paraview.org/u/LuFuchs)\
**Replies:** 0\
**Last updated:** [January 19, 2022, 3:38pm UTC](https://discourse.paraview.org/t/pvpython-layout1-splithorizontal/8797 "2022-01-19T15:38:11Z")

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Hello everybody, I am trying to automate some visualizations with Paraview using pvpython. For some postprocessing routines it works very nicely (I use paraview version 5.10.0-RC2 on a linux machine). I want to create …

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## [Multi-dimensional netCDF file visualization](https://discourse.paraview.org/t/multi-dimensional-netcdf-file-visualization/746)

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**Author:** [@ZiweiWu](https://discourse.paraview.org/u/ZiweiWu)\
**Replies:** 11\
**Last updated:** [January 19, 2022, 10:52am UTC](https://discourse.paraview.org/t/multi-dimensional-netcdf-file-visualization/746 "2022-01-19T10:52:18Z")

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Hi, I’m trying to use Paraview visualize multi-dimension netCDF data. But I noticed that the vtkNetcdfReader can’t take files that contain more than three dimensions(time included), and when I import my file on Windows …

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## [Difference of results between times](https://discourse.paraview.org/t/difference-of-results-between-times/8792)

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**Author:** [@Andrei](https://discourse.paraview.org/u/Andrei)\
**Replies:** 2\
**Last updated:** [January 19, 2022, 9:51am UTC](https://discourse.paraview.org/t/difference-of-results-between-times/8792 "2022-01-19T09:51:48Z")

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Hello! How to to calculate the difference in actual cell volume between times? For example, how to to calculate the increment of actual volume of the cell No 20 between time 4 and 3. Can a ProgrammableFilter help here? I…

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## [plot .dat file in Paraview time animation](https://discourse.paraview.org/t/plot-dat-file-in-paraview-time-animation/8790)

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**Author:** [@usman\_liaqat](https://discourse.paraview.org/u/usman_liaqat)\
**Replies:** 8\
**Last updated:** [January 18, 2022, 3:59pm UTC](https://discourse.paraview.org/t/plot-dat-file-in-paraview-time-animation/8790 "2022-01-18T15:59:46Z")

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Dear All, I am beginner in Paraview. I am trying to open (.dat) file in p araview. I am facing following error

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## [VTK file visualization and surface/volume mesh extraction](https://discourse.paraview.org/t/vtk-file-visualization-and-surface-volume-mesh-extraction/8757)

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**Author:** [@Emil](https://discourse.paraview.org/u/Emil)\
**Replies:** 4\
**Last updated:** [January 18, 2022, 3:20pm UTC](https://discourse.paraview.org/t/vtk-file-visualization-and-surface-volume-mesh-extraction/8757 "2022-01-18T15:20:21Z")

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Hello Gentle people I am facing an issue when trying to create a stl surface from vtk file generated from a open source program. I am not an expert on the program that outputs the vtk file nor it has many parameters tha…

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## [New to Paraview and I need help with understanding the data.](https://discourse.paraview.org/t/new-to-paraview-and-i-need-help-with-understanding-the-data/8788)

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**Author:** [@seb](https://discourse.paraview.org/u/seb)\
**Replies:** 8\
**Last updated:** [January 18, 2022, 9:06am UTC](https://discourse.paraview.org/t/new-to-paraview-and-i-need-help-with-understanding-the-data/8788 "2022-01-18T09:06:08Z")

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So just as the title says I want to know what the data means. By this I mean the table that appears when you go to Filters \> Integrate Variables. Could someone explain to me what these mean and the units. The “Drag” va…

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## [Animate spherical clip](https://discourse.paraview.org/t/animate-spherical-clip/8615)

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**Author:** [@woodscn](https://discourse.paraview.org/u/woodscn)\
**Replies:** 3\
**Last updated:** [January 17, 2022, 6:42pm UTC](https://discourse.paraview.org/t/animate-spherical-clip/8615 "2022-01-17T18:42:28Z")

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I’d like to create an animation based on the radius parameter for the spherical clip filter. That doesn’t seem to be an option. Is there a way to do this aside from scripting it?

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## [Open Paraview GUI with python functions laoded](https://discourse.paraview.org/t/open-paraview-gui-with-python-functions-laoded/8779)

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**Author:** [@whiteW](https://discourse.paraview.org/u/whiteW)\
**Replies:** 9\
**Last updated:** [January 17, 2022, 2:16pm UTC](https://discourse.paraview.org/t/open-paraview-gui-with-python-functions-laoded/8779 "2022-01-17T14:16:24Z")

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Dear all, I would like to start the GUI of Paraview with some python functions loaded in memory. Now I’m using the following command to open Paraview and execute a script (that also contains some python functions) pa…

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