# Web Support

**URL:** https://discourse.paraview.org/c/web-support/10.md?page=2

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

**Page:** 3

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## [trame: specify item specific slots](https://discourse.paraview.org/t/trame-specify-item-specific-slots/12685)

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**Author:** [@utkarsh.ayachit](https://discourse.paraview.org/u/utkarsh.ayachit)\
**Replies:** 3\
**Last updated:** [August 11, 2023, 3:09pm UTC](https://discourse.paraview.org/t/trame-specify-item-specific-slots/12685 "2023-08-11T15:09:06Z")

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How do I add item-specific dynamic slots for VDataTable? e.g I want to model this Vuetify example in trame, how can I do it? \<template\> \<v-data-table :headers="headers" :items="desserts" class="elevation-1…

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## [Hover Cells/Points On Web ParaView (Visualizer)](https://discourse.paraview.org/t/hover-cells-points-on-web-paraview-visualizer/12671)

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**Author:** [@Reptider](https://discourse.paraview.org/u/Reptider)\
**Replies:** 2\
**Last updated:** [August 10, 2023, 6:30pm UTC](https://discourse.paraview.org/t/hover-cells-points-on-web-paraview-visualizer/12671 "2023-08-10T18:30:47Z")

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Hello! How can I view field values or codinates at cell centers or grid nodes (points) as I can in the desktop version of ParaView?

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## [Exporting a vtk file to vtkjs](https://discourse.paraview.org/t/exporting-a-vtk-file-to-vtkjs/12613)

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**Author:** [@WarinSpace\_Game](https://discourse.paraview.org/u/WarinSpace_Game)\
**Replies:** 8\
**Last updated:** [August 4, 2023, 11:09pm UTC](https://discourse.paraview.org/t/exporting-a-vtk-file-to-vtkjs/12613 "2023-08-04T23:09:35Z")

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I’m able to load a .vtk file using the Python vtk library and view it on a little window (i.e., I can confirm the import works correctly), but how exactly may I export it to a .vtkjs file? Couldn’t find much in the docs. …

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## [Block images stream while interacting](https://discourse.paraview.org/t/block-images-stream-while-interacting/12623)

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**Author:** [@sebasgut1](https://discourse.paraview.org/u/sebasgut1)\
**Replies:** 9\
**Last updated:** [August 3, 2023, 3:15pm UTC](https://discourse.paraview.org/t/block-images-stream-while-interacting/12623 "2023-08-03T15:15:43Z")

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Hello, I was following this tutorial for displaying models remotely and locally in browser. I am wondering if it is possible to block the images stream when a I am interacting with the model. I want to show only an imag…

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## [How to communicate interactively in trame server and client?](https://discourse.paraview.org/t/how-to-communicate-interactively-in-trame-server-and-client/12583)

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**Author:** [@qlhai](https://discourse.paraview.org/u/qlhai)\
**Replies:** 4\
**Last updated:** [July 29, 2023, 2:24am UTC](https://discourse.paraview.org/t/how-to-communicate-interactively-in-trame-server-and-client/12583 "2023-07-29T02:24:33Z")

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Hi, I use trame\_tutorial/04\_application/solution.py(https://github.com/Kitware/trame-tutorial/blob/master/04\_application/solution.py) to display my vtu file, and it worked. Now I want to create a trame client to interact…

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## [Trame connect to remote pv?](https://discourse.paraview.org/t/trame-connect-to-remote-pv/12532)

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**Author:** [@edmondb](https://discourse.paraview.org/u/edmondb)\
**Replies:** 4\
**Last updated:** [July 18, 2023, 9:58pm UTC](https://discourse.paraview.org/t/trame-connect-to-remote-pv/12532 "2023-07-18T21:58:09Z")

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Hello again, Okay, here’s the question in a nutshell: how do I use simple.Connect within a trame application? I have used ParaView (both the GUI and pvpython) to do a remote host connection with simple.Connect(host, po…

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## [Slicing .vtr files in Glance?](https://discourse.paraview.org/t/slicing-vtr-files-in-glance/12402)

<div class="topic-metadata">

**Author:** [@WarinSpace\_Game](https://discourse.paraview.org/u/WarinSpace_Game)\
**Replies:** 5\
**Last updated:** [July 5, 2023, 8:32am UTC](https://discourse.paraview.org/t/slicing-vtr-files-in-glance/12402 "2023-07-05T08:32:35Z")

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Hi, I have 3 .vtr files (see here), which I can open as a group in ParaView and play an animation through the files (each .vtr corresponds to a different timestep, ordered by the filename) without problems: Is there…

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## [visualising change in zylinder thickness](https://discourse.paraview.org/t/visualising-change-in-zylinder-thickness/12436)

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**Author:** [@johannbl](https://discourse.paraview.org/u/johannbl)\
**Replies:** 0\
**Last updated:** [July 2, 2023, 1:44pm UTC](https://discourse.paraview.org/t/visualising-change-in-zylinder-thickness/12436 "2023-07-02T13:44:43Z")

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Hi, i am new to paraview. I would like to visualise a zylinder in paraview. I already got the cartesian coordinates for the datapoints. Some cylinder differ in thickness and I like to plot a colorbar for the deviation of…

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## [Saving a RGB numpy array into \*.vtk for visualisation](https://discourse.paraview.org/t/saving-a-rgb-numpy-array-into-vtk-for-visualisation/12425)

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**Author:** [@rkenko](https://discourse.paraview.org/u/rkenko)\
**Replies:** 0\
**Last updated:** [July 1, 2023, 5:27am UTC](https://discourse.paraview.org/t/saving-a-rgb-numpy-array-into-vtk-for-visualisation/12425 "2023-07-01T05:27:43Z")

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Hi, i wonder if it is possible in a simple way, to save a 3D RGB (so 4D) numpy array into the \*.vtk format readable by paraview. I used to work on grayscale images and this small command did the trick: arr = np.random.r…

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## [Gradient of unstructured datasets in paraview giving zero values at the walls.](https://discourse.paraview.org/t/gradient-of-unstructured-datasets-in-paraview-giving-zero-values-at-the-walls/12406)

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**Author:** [@Deepanker\_Chaudhary](https://discourse.paraview.org/u/Deepanker_Chaudhary)\
**Replies:** 6\
**Last updated:** [June 28, 2023, 1:41pm UTC](https://discourse.paraview.org/t/gradient-of-unstructured-datasets-in-paraview-giving-zero-values-at-the-walls/12406 "2023-06-28T13:41:36Z")

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Hi everyone, Actually I am doing LES simulation in openfoam and I want to know the shear stress at the walls of my geometry. The geometry is quite a simple one with a cylinder and some internal pipes as shown in the att…

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## [Sending File data to pvpython and get the image back and display on personal website](https://discourse.paraview.org/t/sending-file-data-to-pvpython-and-get-the-image-back-and-display-on-personal-website/11939)

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**Author:** [@Jakob\_Patterson](https://discourse.paraview.org/u/Jakob_Patterson)\
**Replies:** 0\
**Last updated:** [April 20, 2023, 7:52pm UTC](https://discourse.paraview.org/t/sending-file-data-to-pvpython-and-get-the-image-back-and-display-on-personal-website/11939 "2023-04-20T19:52:49Z")

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I am fairly new to paraview and have downloaded paraview onto my personal server. I have gotten pvpython to connect to my personal website. But am struggling to find a way to send a file that a user chooses to the pvpyth…

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## [Way forward with Paraview Web](https://discourse.paraview.org/t/way-forward-with-paraview-web/11900)

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**Author:** [@Ari](https://discourse.paraview.org/u/Ari)\
**Replies:** 7\
**Last updated:** [April 18, 2023, 2:36pm UTC](https://discourse.paraview.org/t/way-forward-with-paraview-web/11900 "2023-04-18T14:36:56Z")

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Hello, Please accept my apologies for a long description. We are using Paraview at the moment to visulaize OpenFoam files and we are planning to use it in Browser (Web). We want our sever to do heavy-lifting and browse…

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## [How to Add a Filter in Paraview Visualizer](https://discourse.paraview.org/t/how-to-add-a-filter-in-paraview-visualizer/11819)

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**Author:** [@HNU\_yanlin](https://discourse.paraview.org/u/HNU_yanlin)\
**Replies:** 0\
**Last updated:** [April 6, 2023, 7:24am UTC](https://discourse.paraview.org/t/how-to-add-a-filter-in-paraview-visualizer/11819 "2023-04-06T07:24:16Z")

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I want to add a Glyph, but I don’t know how to add it

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## [trame: how to add tooltip text](https://discourse.paraview.org/t/trame-how-to-add-tooltip-text/11763)

<div class="topic-metadata">

**Author:** [@bigfooted](https://discourse.paraview.org/u/bigfooted)\
**Replies:** 1\
**Last updated:** [March 31, 2023, 2:03pm UTC](https://discourse.paraview.org/t/trame-how-to-add-tooltip-text/11763 "2023-03-31T14:03:37Z")

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Hi, suppose I have a simple checkbox in trame. How can I add a tooltip text when I hover over the box? I do not know how I can translate the explanation on the vuetify website into trame functionality. The vuetify site…

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## [How to use Paraview Glance to show the Segmentation label](https://discourse.paraview.org/t/how-to-use-paraview-glance-to-show-the-segmentation-label/11739)

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**Author:** [@seenbefore](https://discourse.paraview.org/u/seenbefore)\
**Replies:** 3\
**Last updated:** [March 28, 2023, 3:33pm UTC](https://discourse.paraview.org/t/how-to-use-paraview-glance-to-show-the-segmentation-label/11739 "2023-03-28T15:33:04Z")

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Hi, I have a 3D segmentation algorithm and I have my both input and output as nii.gz. I want to show the segmentation as 3D render and then overlay my slices on input data with different color. Is there any ways to do …

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## [Web Technology and Server Configuration](https://discourse.paraview.org/t/web-technology-and-server-configuration/11555)

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**Author:** [@Aaron](https://discourse.paraview.org/u/Aaron)\
**Replies:** 3\
**Last updated:** [March 27, 2023, 6:32pm UTC](https://discourse.paraview.org/t/web-technology-and-server-configuration/11555 "2023-03-27T18:32:10Z")

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Hi All, We are looking to develop a Client/Server configuration using ParaView server and one of the available ParaView web technologies. The datasets we have are medium sized and we anticipate multiple simultaneous ses…

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## [Paraview Glance Segmentation label](https://discourse.paraview.org/t/paraview-glance-segmentation-label/4200)

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**Author:** [@alib022](https://discourse.paraview.org/u/alib022)\
**Replies:** 2\
**Last updated:** [March 26, 2023, 1:45pm UTC](https://discourse.paraview.org/t/paraview-glance-segmentation-label/4200 "2023-03-26T13:45:32Z")

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Hi, I have a 3D segmentation algorithm and I have my both input and output as nii.gz. I want to show the segmentation as 3D render and then overlay my slices on input data with different color. Is there any ways to do …

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## [Light Settings in ParaView Glance](https://discourse.paraview.org/t/light-settings-in-paraview-glance/7507)

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**Author:** [@Venke](https://discourse.paraview.org/u/Venke)\
**Replies:** 4\
**Last updated:** [March 21, 2023, 12:55pm UTC](https://discourse.paraview.org/t/light-settings-in-paraview-glance/7507 "2023-03-21T12:55:58Z")

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Hej, Is there a possibility to change the light settings and/or the position of the light source in ParaView Glance? When rotating my model consisting of warped Netcdf-files and planes with texture images it appears bl…

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## [ModuleNotFoundError: No module named '\_ssl'](https://discourse.paraview.org/t/modulenotfounderror-no-module-named-ssl/11578)

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**Author:** [@anshakeel](https://discourse.paraview.org/u/anshakeel)\
**Replies:** 3\
**Last updated:** [March 15, 2023, 10:30am UTC](https://discourse.paraview.org/t/modulenotfounderror-no-module-named-ssl/11578 "2023-03-15T10:30:45Z")

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Hello, Goal: I’m trying to implement websockets in trame application using paraview as a rendering engine. To implement websockets in trame app, i’m using asyncio to create tasks and execute parallelly. Trame app shoul…

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## [Color mesh by vector component](https://discourse.paraview.org/t/color-mesh-by-vector-component/11356)

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**Author:** [@albert](https://discourse.paraview.org/u/albert)\
**Replies:** 8\
**Last updated:** [March 9, 2023, 10:24pm UTC](https://discourse.paraview.org/t/color-mesh-by-vector-component/11356 "2023-03-09T22:24:28Z")

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Hi all, I’m trying to plot an UnstructuredGrid mesh with color based on a single vector component with trame. The vtu is defined as follow: \<PointData Scalars="'Press'" Vectors="'U','UR'" \> \<DataArray type="Float32" N…

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## [trame: cannot run paraview example](https://discourse.paraview.org/t/trame-cannot-run-paraview-example/9243)

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**Author:** [@bigfooted](https://discourse.paraview.org/u/bigfooted)\
**Replies:** 7\
**Last updated:** [March 7, 2023, 2:22pm UTC](https://discourse.paraview.org/t/trame-cannot-run-paraview-example/9243 "2023-03-07T14:22:08Z")

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I had a look at the trame tutorials, and they all work, except the paraview example: https://kitware.github.io/trame/docs/tutorial-paraview.html I get this error and I do not know what to do with it: $ pvpython 05\_par…

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## [Legend in Paraview Glance](https://discourse.paraview.org/t/legend-in-paraview-glance/6714)

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**Author:** [@devngc](https://discourse.paraview.org/u/devngc)\
**Replies:** 22\
**Last updated:** [February 16, 2023, 3:19pm UTC](https://discourse.paraview.org/t/legend-in-paraview-glance/6714 "2023-02-16T15:19:38Z")

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Hi, Is it possible to add a legend in Paraview-glance for some scalar already applied to poly data?

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## [Questions Architecture Related Paraview-Web](https://discourse.paraview.org/t/questions-architecture-related-paraview-web/11317)

<div class="topic-metadata">

**Author:** [@anshakeel](https://discourse.paraview.org/u/anshakeel)\
**Replies:** 12\
**Last updated:** [February 9, 2023, 4:18pm UTC](https://discourse.paraview.org/t/questions-architecture-related-paraview-web/11317 "2023-02-09T16:18:56Z")

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Hello, I’m trying to understand the architecture of Paraview, Paraview-web and Trame. My Main Focus is to Enable 3D Web Visualization. I have tried multiple Examples of Trame, Paraview Visualizer and ParaView-lite. I ha…

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## [CellPicker in ParaView Glance](https://discourse.paraview.org/t/cellpicker-in-paraview-glance/11319)

<div class="topic-metadata">

**Author:** [@ezesiza](https://discourse.paraview.org/u/ezesiza)\
**Replies:** 0\
**Last updated:** [February 1, 2023, 11:02pm UTC](https://discourse.paraview.org/t/cellpicker-in-paraview-glance/11319 "2023-02-01T23:02:35Z")

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I am trying to add the cell picker functionality in my glance app. I tried doing this by extending the ViewProxy.js class. found here \\glance\\node\_modules\\@kitware\\vtk.js\\Proxy\\Core\\ViewProxy.js. Everything seems to work…

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## [ParaViewWeb + Vtk.js with Collaboration Implementation](https://discourse.paraview.org/t/paraviewweb-vtk-js-with-collaboration-implementation/11273)

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**Author:** [@Matt\_S](https://discourse.paraview.org/u/Matt_S)\
**Replies:** 1\
**Last updated:** [January 26, 2023, 4:43pm UTC](https://discourse.paraview.org/t/paraviewweb-vtk-js-with-collaboration-implementation/11273 "2023-01-26T16:43:44Z")

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Hello, I am looking to create a web-based viewer for some large 3D datasets (5+ GB). After looking through the Kitware product line-up and some forum posts. I was thinking about using vtk.js coupled with a paraview-web …

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## [(pvpython -m paraview.apps -l) Shows nothing in Build, while shows apps in Paraview Binary](https://discourse.paraview.org/t/pvpython-m-paraview-apps-l-shows-nothing-in-build-while-shows-apps-in-paraview-binary/11214)

<div class="topic-metadata">

**Author:** [@anshakeel](https://discourse.paraview.org/u/anshakeel)\
**Replies:** 2\
**Last updated:** [January 25, 2023, 6:30am UTC](https://discourse.paraview.org/t/pvpython-m-paraview-apps-l-shows-nothing-in-build-while-shows-apps-in-paraview-binary/11214 "2023-01-25T06:30:43Z")

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Hello, I am trying to run the Paraview-lite application. The issue I’m getting is that it only shows the Paraview apps when I run this Command pvpython -m paraview.apps -l it shows noting in the paraview Build directory…

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## [ParaViewweb netcdf support](https://discourse.paraview.org/t/paraviewweb-netcdf-support/11234)

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**Author:** [@Q1CHEN](https://discourse.paraview.org/u/Q1CHEN)\
**Replies:** 2\
**Last updated:** [January 23, 2023, 3:36pm UTC](https://discourse.paraview.org/t/paraviewweb-netcdf-support/11234 "2023-01-23T15:36:24Z")

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Hi everyone, does paraviewweb support nercdf(.nc) files? I always get error when I open netcdf files with it, such as ( 54.356s) \[paraview \] vtkNetCDFCAMReader.cxx:132 ERR| vtkNetCDFCAMReader (0x17841060): Ne…

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## [trame: inject custom css](https://discourse.paraview.org/t/trame-inject-custom-css/11181)

<div class="topic-metadata">

**Author:** [@utkarsh.ayachit](https://discourse.paraview.org/u/utkarsh.ayachit)\
**Replies:** 2\
**Last updated:** [January 17, 2023, 3:59pm UTC](https://discourse.paraview.org/t/trame-inject-custom-css/11181 "2023-01-17T15:59:54Z")

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In a trame + paraview based application, all I want to do is inject this following css. How can I do that? html { overflow-y: hidden } What’s happening is I am getting this y-scrollbar (highlighted below) and I want …

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## [Build and install ParaView](https://discourse.paraview.org/t/build-and-install-paraview/10354)

<div class="topic-metadata">

**Author:** [@ertyig1](https://discourse.paraview.org/u/ertyig1)\
**Replies:** 1\
**Last updated:** [December 7, 2022, 12:14am UTC](https://discourse.paraview.org/t/build-and-install-paraview/10354 "2022-12-07T00:14:59Z")

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Hello,when I try to build paraview and encounter a problem. Here is my cmake options: I try to delete the “TK\_WRAP\_PYTHON\_SUPPRESS\_UNINITIALIZED” in some '.cxx’files, it can build well, but there are too many file…

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## [trame: multiple renderers/renderWindow](https://discourse.paraview.org/t/trame-multiple-renderers-renderwindow/10856)

<div class="topic-metadata">

**Author:** [@albert](https://discourse.paraview.org/u/albert)\
**Replies:** 3\
**Last updated:** [December 6, 2022, 1:19pm UTC](https://discourse.paraview.org/t/trame-multiple-renderers-renderwindow/10856 "2022-12-06T13:19:56Z")

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Hi all, I have some doubts about how to handle multiple view of the same file (in local rendering). For example, I wanted to have two different views of the same object side by side (organized with vuetify row/cols). I …

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