# ParaView Support

**URL:** https://discourse.paraview.org/c/paraview-support/7.md?page=175

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

**Page:** 176

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## [Adding Python annotation to line chart plot](https://discourse.paraview.org/t/adding-python-annotation-to-line-chart-plot/4720)

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**Author:** [@ANON1](https://discourse.paraview.org/u/ANON1)\
**Replies:** 3\
**Last updated:** [July 1, 2020, 8:54pm UTC](https://discourse.paraview.org/t/adding-python-annotation-to-line-chart-plot/4720 "2020-07-01T20:54:35Z")

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Hello, I am trying to add a dynamic title to my line chart plot which an mathematical expression involving time, example of title: “Velocity = 5sin(4t)”. The mathematical expression should be evaluated by Paraview. I tr…

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## [ParaView master build error related to libxml - osx 10.14](https://discourse.paraview.org/t/paraview-master-build-error-related-to-libxml-osx-10-14/2997)

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**Author:** [@Haocheng\_Liu](https://discourse.paraview.org/u/Haocheng_Liu)\
**Replies:** 6\
**Last updated:** [July 1, 2020, 8:03pm UTC](https://discourse.paraview.org/t/paraview-master-build-error-related-to-libxml-osx-10-14/2997 "2020-07-01T20:03:14Z")

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Hi ParaView developers, I’m doing a clean build on osx 10.14 + CMake 3.15.0 and it fails due to libxml issue. Any ideas? CMakeCache.txt (291.1 KB) ParaView SHA: commit 3cdf5c845e23437cf51dc3cd36c70f133917b67c (HEAD -\>…

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## [Using rendering on ParaView 5.8](https://discourse.paraview.org/t/using-rendering-on-paraview-5-8/4692)

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**Author:** [@JadTayoun](https://discourse.paraview.org/u/JadTayoun)\
**Replies:** 2\
**Last updated:** [July 1, 2020, 2:51pm UTC](https://discourse.paraview.org/t/using-rendering-on-paraview-5-8/4692 "2020-07-01T14:51:10Z")

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Hello there, I’m slightly new to Linux (but not to ParaView) and trying to learn how to render my scientific data using paraview (I mainly do CFD and need to make my data pretty for non-specialists). I’ve installed vers…

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## [Total surface area using MeshQuality Filter](https://discourse.paraview.org/t/total-surface-area-using-meshquality-filter/4726)

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**Author:** [@dutta-alankar](https://discourse.paraview.org/u/dutta-alankar)\
**Replies:** 4\
**Last updated:** [July 1, 2020, 2:16pm UTC](https://discourse.paraview.org/t/total-surface-area-using-meshquality-filter/4726 "2020-07-01T14:16:17Z")

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I want to use Mesh Quality filter to calculate the total surface area of a surface. Any help on how I may be able to do that?

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## [Why is it not possible to add/substract selection with Select Cells/Points through ?](https://discourse.paraview.org/t/why-is-it-not-possible-to-add-substract-selection-with-select-cells-points-through/4718)

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**Author:** [@Richard](https://discourse.paraview.org/u/Richard)\
**Replies:** 1\
**Last updated:** [June 30, 2020, 11:25pm UTC](https://discourse.paraview.org/t/why-is-it-not-possible-to-add-substract-selection-with-select-cells-points-through/4718 "2020-06-30T23:25:27Z")

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It is expected behaviour or just a bug?

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## [Questions about ParaView](https://discourse.paraview.org/t/questions-about-paraview/4712)

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**Author:** [@rw20](https://discourse.paraview.org/u/rw20)\
**Replies:** 2\
**Last updated:** [June 30, 2020, 2:13pm UTC](https://discourse.paraview.org/t/questions-about-paraview/4712 "2020-06-30T14:13:46Z")

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Hello, I am new to using ParaView and just have a couple of questions about it. I wanted to know if the software supports any method of reducing the number of samples of an uploaded point cloud. I also was wondering if …

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## [Help with stream tracer](https://discourse.paraview.org/t/help-with-stream-tracer/4698)

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**Author:** [@rcm](https://discourse.paraview.org/u/rcm)\
**Replies:** 5\
**Last updated:** [June 30, 2020, 2:59am UTC](https://discourse.paraview.org/t/help-with-stream-tracer/4698 "2020-06-30T02:59:51Z")

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I am having some problems calculating path trajectories. I am using the “Stream Tracer” filter with a 3D vector field and seeds along a line, and comparing it to a vizualisation of the field using “Surface LIC” in the s…

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## [Loading State file in Paraview Client](https://discourse.paraview.org/t/loading-state-file-in-paraview-client/1548)

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**Author:** [@vrkssai](https://discourse.paraview.org/u/vrkssai)\
**Replies:** 3\
**Last updated:** [June 30, 2020, 1:32am UTC](https://discourse.paraview.org/t/loading-state-file-in-paraview-client/1548 "2020-06-30T01:32:12Z")

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Hi all, I’m connecting to a remote machine running pvserver on it and trying to load a state file located on the remote machine. But the folders displayed in the client side for laoding the state file are on the client …

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## [Axes Grid not visible with Ray Tracing](https://discourse.paraview.org/t/axes-grid-not-visible-with-ray-tracing/4709)

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**Author:** [@vnpavanelli](https://discourse.paraview.org/u/vnpavanelli)\
**Replies:** 0\
**Last updated:** [June 29, 2020, 1:22pm UTC](https://discourse.paraview.org/t/axes-grid-not-visible-with-ray-tracing/4709 "2020-06-29T13:22:36Z")

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Hi, when using the Ray Tracing I can’t get any of ‘Axes Grid’ or ‘Data Axes Grid’ to show. The Color Legend/Color bar and Orientation Axes are always visible but as the ‘Enable Ray Tracing’ is checked the Axes Grid disa…

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## [\[SOLVED\] Renderview freeze aftermodel loading](https://discourse.paraview.org/t/solved-renderview-freeze-aftermodel-loading/4707)

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**Author:** [@Marvin](https://discourse.paraview.org/u/Marvin)\
**Replies:** 2\
**Last updated:** [June 29, 2020, 11:29am UTC](https://discourse.paraview.org/t/solved-renderview-freeze-aftermodel-loading/4707 "2020-06-29T11:29:55Z")

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Hi, I have reintalled my computer with Ubuntu 20.04 and paraview 5.7.0. But now I renderview freeze when I load a result from OpenFoam. I tried with few official tutorial but same result. I don’t get any message in th…

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## [Extract surface of domain based on condition](https://discourse.paraview.org/t/extract-surface-of-domain-based-on-condition/4694)

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**Author:** [@thabuis](https://discourse.paraview.org/u/thabuis)\
**Replies:** 2\
**Last updated:** [June 29, 2020, 8:00am UTC](https://discourse.paraview.org/t/extract-surface-of-domain-based-on-condition/4694 "2020-06-29T08:00:50Z")

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Hello everyone, I have a .pvd file generated from FEniCS containing some data points. I would like to extract the cells/surfaces where a condition is met (data\_value \> 0.5), to export it afterwards to a .STL file. See …

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## [PlotOverLine for specific time step](https://discourse.paraview.org/t/plotoverline-for-specific-time-step/4675)

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**Author:** [@jrobbin](https://discourse.paraview.org/u/jrobbin)\
**Replies:** 4\
**Last updated:** [June 29, 2020, 4:12am UTC](https://discourse.paraview.org/t/plotoverline-for-specific-time-step/4675 "2020-06-29T04:12:41Z")

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Hello, I’m trying to extract x-y data from a PlotOverLine in a Python script (below). I’m able to plot data from the zeroth step index, but I cannot figure out how to change the time step. The following still writes x…

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## [Simulation Output in pvd format](https://discourse.paraview.org/t/simulation-output-in-pvd-format/4704)

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**Author:** [@dutta-alankar](https://discourse.paraview.org/u/dutta-alankar)\
**Replies:** 1\
**Last updated:** [June 29, 2020, 3:23am UTC](https://discourse.paraview.org/t/simulation-output-in-pvd-format/4704 "2020-06-29T03:23:36Z")

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Hi, I’m writing an IO for a fluid dynamics code in C. Is there any specific guide that can help me dump my output fields of the simulations in pvd format directly from the C code? I couldn’t find much help and so decide…

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## [Safe uninstall of ParaView on Ubuntu](https://discourse.paraview.org/t/safe-uninstall-of-paraview-on-ubuntu/4705)

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**Author:** [@dld](https://discourse.paraview.org/u/dld)\
**Replies:** 1\
**Last updated:** [June 29, 2020, 3:22am UTC](https://discourse.paraview.org/t/safe-uninstall-of-paraview-on-ubuntu/4705 "2020-06-29T03:22:58Z")

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Hi there, I installed ParaView 5.7.0 on Ubuntu 18.04 by following some advice on here: dowloading the tar.gz release from the Downloads tab, unpacking it, and then copying the whole directory into /opt. I now want to re…

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## [Additional processing on file open](https://discourse.paraview.org/t/additional-processing-on-file-open/4610)

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**Author:** [@ju-kreber](https://discourse.paraview.org/u/ju-kreber)\
**Replies:** 2\
**Last updated:** [June 28, 2020, 6:22pm UTC](https://discourse.paraview.org/t/additional-processing-on-file-open/4610 "2020-06-28T18:22:56Z")

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Hello, I am searching for a way to achieve the following: I have some vtmb files that, once I open them in Paraview, need some additional processing like applying several filters. The way I’m handling this currently is …

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## [\[BUG\] Crash on opening of XDMF file](https://discourse.paraview.org/t/bug-crash-on-opening-of-xdmf-file/4691)

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**Author:** [@Rem](https://discourse.paraview.org/u/Rem)\
**Replies:** 0\
**Last updated:** [June 26, 2020, 9:52am UTC](https://discourse.paraview.org/t/bug-crash-on-opening-of-xdmf-file/4691 "2020-06-26T09:52:29Z")

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Hi all, I noticed Paraview crashes when opening a XDMF file. Steps to reproduce : unzip this archive T.rar (2.6 MB) double click on T.xdmf select Xdmf3ReaderS and click “ok” I am using ParaView 5.8.0 I noticed this…

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## [Change the size and colour of the grid ticks](https://discourse.paraview.org/t/change-the-size-and-colour-of-the-grid-ticks/4686)

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**Author:** [@Jeffersson](https://discourse.paraview.org/u/Jeffersson)\
**Replies:** 4\
**Last updated:** [June 26, 2020, 9:18am UTC](https://discourse.paraview.org/t/change-the-size-and-colour-of-the-grid-ticks/4686 "2020-06-26T09:18:25Z")

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Hello, I am trying to change the colour and size of the grid ticks and ticklabels. However, in the GUI, the grid button just allow to change the size and colour of the axis title but not that grey colour of the tick num…

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## [Can I make a programmable source follows its specified camera?](https://discourse.paraview.org/t/can-i-make-a-programmable-source-follows-its-specified-camera/4680)

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**Author:** [@Mayakruha](https://discourse.paraview.org/u/Mayakruha)\
**Replies:** 2\
**Last updated:** [June 26, 2020, 9:07am UTC](https://discourse.paraview.org/t/can-i-make-a-programmable-source-follows-its-specified-camera/4680 "2020-06-26T09:07:07Z")

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Hi I wrote a code for programmable source that creates vtkPolyData. I need the object rotates around a axis (point) itself to follows a specified camera like vtkFollower. Can I do it in Paraview for the programmable sou…

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## [Reading a \*.vtk file](https://discourse.paraview.org/t/reading-a-vtk-file/2403)

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**Author:** [@harald](https://discourse.paraview.org/u/harald)\
**Replies:** 8\
**Last updated:** [June 26, 2020, 8:10am UTC](https://discourse.paraview.org/t/reading-a-vtk-file/2403 "2020-06-26T08:10:17Z")

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Hi forum, I created a text-file as described in “File Formats for VTK Version 4.2” for viewing the streamline. But something went wrong. The Informations are shown, but I can not create the streamline. Is there somebody…

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## [Annotate date in the viewport of the 3D visualization](https://discourse.paraview.org/t/annotate-date-in-the-viewport-of-the-3d-visualization/4683)

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**Author:** [@savalma](https://discourse.paraview.org/u/savalma)\
**Replies:** 5\
**Last updated:** [June 26, 2020, 3:21am UTC](https://discourse.paraview.org/t/annotate-date-in-the-viewport-of-the-3d-visualization/4683 "2020-06-26T03:21:15Z")

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Hi Paraview Member, I have the dates for every timestep as a string in a file and I want to link this file to create an annotation where I can see the date instead of the time step. I looked at other sources where this …

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## [Combine Programmable sources/filters into one](https://discourse.paraview.org/t/combine-programmable-sources-filters-into-one/4682)

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**Author:** [@liangwang0734](https://discourse.paraview.org/u/liangwang0734)\
**Replies:** 3\
**Last updated:** [June 25, 2020, 8:09pm UTC](https://discourse.paraview.org/t/combine-programmable-sources-filters-into-one/4682 "2020-06-25T20:09:37Z")

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Hi PV community, Is it possible to combine the following procedure into one “programmable filter”?: create a “programmable source”, say, a vtkStructuredGrid select the “resample with dataset” filter to sample my data …

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## [Find data weird behaviour](https://discourse.paraview.org/t/find-data-weird-behaviour/4482)

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**Author:** [@Richard](https://discourse.paraview.org/u/Richard)\
**Replies:** 7\
**Last updated:** [June 25, 2020, 6:54pm UTC](https://discourse.paraview.org/t/find-data-weird-behaviour/4482 "2020-06-25T18:54:41Z")

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Not sure why the finding cells by selection with BlockID = 2 and ID = 1 retrieves cells ID = 1 for both Block Number 2 and 4 (which are the only two block in the vtkMultiBlockDataSet). IS there any difference between B…

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## [Clip interpolated points with stl](https://discourse.paraview.org/t/clip-interpolated-points-with-stl/4669)

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**Author:** [@Jouv](https://discourse.paraview.org/u/Jouv)\
**Replies:** 2\
**Last updated:** [June 25, 2020, 12:45pm UTC](https://discourse.paraview.org/t/clip-interpolated-points-with-stl/4669 "2020-06-25T12:45:15Z")

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Hi, I’m a new Paraview user and am completely stuck on how to perform the following: I have generated interpolated points for a volume of which I would like to create an isosurface for a specific value. The interpolated…

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## [Pvserver running on EGL crashes whenever LateX typesetting is used](https://discourse.paraview.org/t/pvserver-running-on-egl-crashes-whenever-latex-typesetting-is-used/4456)

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**Author:** [@dutta-alankar](https://discourse.paraview.org/u/dutta-alankar)\
**Replies:** 7\
**Last updated:** [June 25, 2020, 6:26am UTC](https://discourse.paraview.org/t/pvserver-running-on-egl-crashes-whenever-latex-typesetting-is-used/4456 "2020-06-25T06:26:21Z")

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Hi, I’ve got a pvserver running on EGL renderer. For the caption of the colormap I wanted to put some mathematical symbols with LateX typesetting. But as soon as I hit apply, Paraview crashes. But the same doesn’t happe…

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## [Spherical coordinates with vtk file](https://discourse.paraview.org/t/spherical-coordinates-with-vtk-file/4643)

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**Author:** [@Yoshino](https://discourse.paraview.org/u/Yoshino)\
**Replies:** 0\
**Last updated:** [June 22, 2020, 1:28pm UTC](https://discourse.paraview.org/t/spherical-coordinates-with-vtk-file/4643 "2020-06-22T13:28:05Z")

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I have a vtk file which contains coordinate data(latitude and longitude values) as field arrays. I want it to be rendered as a sphere(an earth surface), the problem is that my vtk file contains 136 elements in latitude w…

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## [Which unstructured grid volume rendering algorithms do you use?](https://discourse.paraview.org/t/which-unstructured-grid-volume-rendering-algorithms-do-you-use/4659)

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**Author:** [@cory.quammen](https://discourse.paraview.org/u/cory.quammen)\
**Replies:** 1\
**Last updated:** [June 24, 2020, 4:19pm UTC](https://discourse.paraview.org/t/which-unstructured-grid-volume-rendering-algorithms-do-you-use/4659 "2020-06-24T16:19:34Z")

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If you do volume rendering of unstructured grids with ParaView, please tell us which method you use by filling out this poll. If you do not use one of the methods because it is buggy but you would like to use it, please …

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## [Calculate expression](https://discourse.paraview.org/t/calculate-expression/4662)

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**Author:** [@nsuri](https://discourse.paraview.org/u/nsuri)\
**Replies:** 1\
**Last updated:** [June 24, 2020, 1:58pm UTC](https://discourse.paraview.org/t/calculate-expression/4662 "2020-06-24T13:58:51Z")

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Hello, I have imported unsteady results in .vtu format into ParaView. I want to calculate the below expression: It is the relative rate of change of the velocity vector. To apply this, I need to access velocity data …

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## [userGuide Help (vtkProcessID Warning)](https://discourse.paraview.org/t/userguide-help-vtkprocessid-warning/4586)

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**Author:** [@Hstreet](https://discourse.paraview.org/u/Hstreet)\
**Replies:** 2\
**Last updated:** [June 24, 2020, 12:44pm UTC](https://discourse.paraview.org/t/userguide-help-vtkprocessid-warning/4586 "2020-06-24T12:44:31Z")

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Just a quick Question, I have just started in learning Paraview and i have run into an issue with the UserGuide… I am to the point where it is starting to run through the Parallel processing and From the UserGuide fr…

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## [Missing command for setting significant digits in pvbatch and in pvserver the related button has no effect](https://discourse.paraview.org/t/missing-command-for-setting-significant-digits-in-pvbatch-and-in-pvserver-the-related-button-has-no-effect/4667)

<div class="topic-metadata">

**Author:** [@Rob777](https://discourse.paraview.org/u/Rob777)\
**Replies:** 0\
**Last updated:** [June 24, 2020, 10:34am UTC](https://discourse.paraview.org/t/missing-command-for-setting-significant-digits-in-pvbatch-and-in-pvserver-the-related-button-has-no-effect/4667 "2020-06-24T10:34:35Z")

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Hello Everyone, I’m using paraview in the client/server configuration with pvserver. When I create a new spreadsheet view and set a bigger number of significant digits I then find that this has no effect on the exporte…

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## [2D contour from csv with values at array nodes](https://discourse.paraview.org/t/2d-contour-from-csv-with-values-at-array-nodes/4636)

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**Author:** [@Qiao](https://discourse.paraview.org/u/Qiao)\
**Replies:** 7\
**Last updated:** [June 24, 2020, 10:19am UTC](https://discourse.paraview.org/t/2d-contour-from-csv-with-values-at-array-nodes/4636 "2020-06-24T10:19:07Z")

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Dear guys, I am new in using Paraview. I want to contour 2D array data in CSV format (the attached result\_test.csv (2.5 KB) ). The array is 10x10 size and each node of the array has its value. The contour will be based …

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