# Latest **URL:** https://vapor.discourse.group/latest.md [Latest](https://vapor.discourse.group/latest.md) · [Categories](https://vapor.discourse.group/categories.md) --- ## [Welcome to Discourse](https://vapor.discourse.group/t/welcome-to-discourse/7)
**Author:** [@system](https://vapor.discourse.group/u/system)\ **Replies:** 0\ **Last updated:** [May 12, 2020, 3:24pm UTC](https://vapor.discourse.group/t/welcome-to-discourse/7 "2020-05-12T15:24:35Z")
VAPOR is the Visualization and Analysis Platform for Ocean, Atmosphere, and Solar Researchers. VAPOR provides an interactive 3D visualization environment that can also produce animations and still frame images. VAPOR run… --- ## [Animation Across Given Axis](https://vapor.discourse.group/t/animation-across-given-axis/491)
**Author:** [@elijah](https://vapor.discourse.group/u/elijah)\ **Replies:** 1\ **Last updated:** [July 13, 2026, 4:44pm UTC](https://vapor.discourse.group/t/animation-across-given-axis/491 "2026-07-13T16:44:20Z")
Hi! I have a 3D dataset and am displaying it with a slice across the XY plane. I would like to create an animation of the slice iterating through the z-layers to display the range of values. I do not see a way to do thi… --- ## [Import WRF data](https://vapor.discourse.group/t/import-wrf-data/488)
**Author:** [@astro](https://vapor.discourse.group/u/astro)\ **Replies:** 4\ **Last updated:** [May 19, 2026, 6:26pm UTC](https://vapor.discourse.group/t/import-wrf-data/488 "2026-05-19T18:26:03Z")
I am using VAPOR to directly import my WRF-ARW wrfout files through the WRF import option. After loading the file, I checked the dataset metadata and found that the transform values look unusual. The X and Y scales are b… --- ## [Moving render sources in the render Tab](https://vapor.discourse.group/t/moving-render-sources-in-the-render-tab/485)
**Author:** [@SteveCNTower](https://vapor.discourse.group/u/SteveCNTower)\ **Replies:** 3\ **Last updated:** [March 24, 2026, 10:21pm UTC](https://vapor.discourse.group/t/moving-render-sources-in-the-render-tab/485 "2026-03-24T22:21:53Z")
Hello, how do I move the different variables up and down (change the order) --- ## [Import data on unstructured grid](https://vapor.discourse.group/t/import-data-on-unstructured-grid/484)
**Author:** [@nforcone](https://vapor.discourse.group/u/nforcone)\ **Replies:** 1\ **Last updated:** [March 23, 2026, 7:50pm UTC](https://vapor.discourse.group/t/import-data-on-unstructured-grid/484 "2026-03-23T19:50:15Z")
Hello, I have data stored in a NetCDF file on its native, unstructured model grid. Here is a snapshot of how the data is organized and formatted: dimensions: ncol = 316010 ; time = UNLIMITED ; // (12 currently) nbnd… --- ## [Beginner in Vapor](https://vapor.discourse.group/t/beginner-in-vapor/483)
**Author:** [@Safna](https://vapor.discourse.group/u/Safna)\ **Replies:** 1\ **Last updated:** [March 16, 2026, 4:43pm UTC](https://vapor.discourse.group/t/beginner-in-vapor/483 "2026-03-16T16:43:28Z")
Hi, I am a beginner in Vapor. I installed the Vapor GUI and went through the documentation. I get an idea of how to use it. But, I have extrapolated ‘\*.sav’ save files fro SSWIDL with values Bx, By, and Bz in 3D. Before … --- ## [Visualise a given surface in 3D](https://vapor.discourse.group/t/visualise-a-given-surface-in-3d/482)
**Author:** [@aqua159](https://vapor.discourse.group/u/aqua159)\ **Replies:** 1\ **Last updated:** [February 9, 2026, 5:09pm UTC](https://vapor.discourse.group/t/visualise-a-given-surface-in-3d/482 "2026-02-09T17:09:19Z")
I have a 3D data (vx - velocity) and I want to visualize a particular surface whose z coordinates I can provide using python. I cant use isosurface in this case as vx has different values at different regions in the surf… --- ## [Vapor with python \> 3.9](https://vapor.discourse.group/t/vapor-with-python-3-9/478)
**Author:** [@jmccaa](https://vapor.discourse.group/u/jmccaa)\ **Replies:** 4\ **Last updated:** [October 9, 2025, 8:50pm UTC](https://vapor.discourse.group/t/vapor-with-python-3-9/478 "2025-10-09T20:50:29Z")
Greetings! Several factors (including EOL for security patches next month) are contributing to a strong desire to stop using python 3.9, but as far as I can see, the latest vapor-python release still requires this versi… --- ## [How can i use the field line advection in Vapor 3.10.1](https://vapor.discourse.group/t/how-can-i-use-the-field-line-advection-in-vapor-3-10-1/475)
**Author:** [@pawan](https://vapor.discourse.group/u/pawan)\ **Replies:** 1\ **Last updated:** [September 2, 2025, 8:44pm UTC](https://vapor.discourse.group/t/how-can-i-use-the-field-line-advection-in-vapor-3-10-1/475 "2025-09-02T20:44:52Z")
Hi I am trying to use the field line advection for my simulation data but couldn’t able to find the option in vapor 3.10.1. Can you help me with this ? Thanks Pawan Kumar Patna University India --- ## [Latitude and longitude lines](https://vapor.discourse.group/t/latitude-and-longitude-lines/476)
**Author:** [@ColbyF](https://vapor.discourse.group/u/ColbyF)\ **Replies:** 1\ **Last updated:** [September 2, 2025, 8:44pm UTC](https://vapor.discourse.group/t/latitude-and-longitude-lines/476 "2025-09-02T20:44:08Z")
I can see the tick mark settings under Axis Annotations, but I don’t see how to have Vapor plot latitude and longitude lines on my image. I also don’t see any reference material to how to set the various items here and … --- ## [How to setup Python Vapor](https://vapor.discourse.group/t/how-to-setup-python-vapor/477)
**Author:** [@tobtab](https://vapor.discourse.group/u/tobtab)\ **Replies:** 1\ **Last updated:** [September 2, 2025, 8:41pm UTC](https://vapor.discourse.group/t/how-to-setup-python-vapor/477 "2025-09-02T20:41:16Z")
Hello, I am trying to set up vapor python by wsl after running the command, the animation does not match the app, so I would like to ask about the settings. Initial settings? --- ## [Crashing of vaporgui as i run a python script inside it. I am using vapor 2.6.0 in ubuntu 24.04 but when i test a python script into this then the vapor window gets charshed , eventhis works well in windows](https://vapor.discourse.group/t/crashing-of-vaporgui-as-i-run-a-python-script-inside-it-i-am-using-vapor-2-6-0-in-ubuntu-24-04-but-when-i-test-a-python-script-into-this-then-the-vapor-window-gets-charshed-eventhis-works-well-in-windows/460)
**Author:** [@pawan](https://vapor.discourse.group/u/pawan)\ **Replies:** 2\ **Last updated:** [July 23, 2025, 2:33pm UTC](https://vapor.discourse.group/t/crashing-of-vaporgui-as-i-run-a-python-script-inside-it-i-am-using-vapor-2-6-0-in-ubuntu-24-04-but-when-i-test-a-python-script-into-this-then-the-vapor-window-gets-charshed-eventhis-works-well-in-windows/460 "2025-07-23T14:33:49Z")
Unable to load library icui18n “Cannot load library icui18n: (icui18n: cannot open shared object file: No such file or directory)” Info : ExpatParseMgr::~ExpatParseMgr() Aborted (core dumped) --- ## [Saltation and Particle Charge Polarity](https://vapor.discourse.group/t/saltation-and-particle-charge-polarity/443)
**Author:** [@SandmanWx](https://vapor.discourse.group/u/SandmanWx)\ **Replies:** 4\ **Last updated:** [July 21, 2025, 10:37am UTC](https://vapor.discourse.group/t/saltation-and-particle-charge-polarity/443 "2025-07-21T10:37:00Z")
Particle Renderer — 3.9.3 documentation Does the LPT also keep track of charge polarity of dust particles? Or of graupel particle charge polarity? And of the effects of static electric fields? --- ## [How to apply color by wind speed for 3 dimensional u,v,w component in vapor](https://vapor.discourse.group/t/how-to-apply-color-by-wind-speed-for-3-dimensional-u-v-w-component-in-vapor/457)
**Author:** [@khin](https://vapor.discourse.group/u/khin)\ **Replies:** 8\ **Last updated:** [June 22, 2025, 2:03am UTC](https://vapor.discourse.group/t/how-to-apply-color-by-wind-speed-for-3-dimensional-u-v-w-component-in-vapor/457 "2025-06-22T02:03:33Z")
Hello, For 2d wind speed, I found we can caluculate the wind speed from vapor\_utils import. How can I calculate the speed from 3-dimensional wind component for wind speed visualization? --- ## [VAPOR CPU to GPU Graphics Control](https://vapor.discourse.group/t/vapor-cpu-to-gpu-graphics-control/455)
**Author:** [@heythreej](https://vapor.discourse.group/u/heythreej)\ **Replies:** 1\ **Last updated:** [June 16, 2025, 4:44pm UTC](https://vapor.discourse.group/t/vapor-cpu-to-gpu-graphics-control/455 "2025-06-16T16:44:26Z")
If I’m running Vapor on cloud computer with multi-gpu capability, how would I go about having Vapor process graphics specifically on gpu. --- ## [Using VAPOR with Real Time Data Set from Radar Site](https://vapor.discourse.group/t/using-vapor-with-real-time-data-set-from-radar-site/454)
**Author:** [@heythreej](https://vapor.discourse.group/u/heythreej)\ **Replies:** 1\ **Last updated:** [June 16, 2025, 4:42pm UTC](https://vapor.discourse.group/t/using-vapor-with-real-time-data-set-from-radar-site/454 "2025-06-16T16:42:55Z")
If I’m having a significant weather event say visible on KLZK radar, how would I go about generating the same file type as in the tornado sample: “24Maycontrol.04001.000000” - Sample Data — 3.10.1 documentation, I’ve use… --- ## [Remote Through X-server](https://vapor.discourse.group/t/remote-through-x-server/452)
**Author:** [@ColbyF](https://vapor.discourse.group/u/ColbyF)\ **Replies:** 4\ **Last updated:** [May 31, 2025, 6:20pm UTC](https://vapor.discourse.group/t/remote-through-x-server/452 "2025-05-31T18:20:06Z")
Can VAPOR be run through an SSH shell like Putty using Xming for an X-server? --- ## [Error with finding UDUnits database](https://vapor.discourse.group/t/error-with-finding-udunits-database/450)
**Author:** [@hawbecker](https://vapor.discourse.group/u/hawbecker)\ **Replies:** 10\ **Last updated:** [May 17, 2025, 12:23am UTC](https://vapor.discourse.group/t/error-with-finding-udunits-database/450 "2025-05-17T00:23:50Z")
Hi, I am trying to use the python API for doing some vapor work but am getting an error when trying to load a dataset that loads without issue in the GUI: Could not find VAPOR installed UDUnits database Attempting to fa… --- ## [Trying to use flow renderer and/or issues with vdc create](https://vapor.discourse.group/t/trying-to-use-flow-renderer-and-or-issues-with-vdc-create/441)
**Author:** [@brummell](https://vapor.discourse.group/u/brummell)\ **Replies:** 5\ **Last updated:** [May 13, 2025, 4:25pm UTC](https://vapor.discourse.group/t/trying-to-use-flow-renderer-and-or-issues-with-vdc-create/441 "2025-05-13T16:25:58Z")
I am trying to make a 3D flowline plot (actually a magnetic fieldline) out of three fields. I can’t see a way of using the flow renderer when I import variables as BOV since only one can be done per BOV. If I try a flo… --- ## [Field lines not anchoring to the bottom boundary](https://vapor.discourse.group/t/field-lines-not-anchoring-to-the-bottom-boundary/444)
**Author:** [@Kamlesh](https://vapor.discourse.group/u/Kamlesh)\ **Replies:** 1\ **Last updated:** [April 28, 2025, 4:13pm UTC](https://vapor.discourse.group/t/field-lines-not-anchoring-to-the-bottom-boundary/444 "2025-04-28T16:13:41Z")
Hi, I have vector magnetic field saved in vapor (.vdc files) and whenever I plot the field lines using flow function in vapor, the field lines never anchor to the bottom boundary. I am attaching an image here for refere… --- ## [How can I expand my white box?](https://vapor.discourse.group/t/how-can-i-expand-my-white-box/447)
**Author:** [@ADvortex](https://vapor.discourse.group/u/ADvortex)\ **Replies:** 1\ **Last updated:** [May 5, 2025, 3:54pm UTC](https://vapor.discourse.group/t/how-can-i-expand-my-white-box/447 "2025-05-05T15:54:52Z")
Half of my data is cut off by the white box..how can i fix this? --- ## [Box outline having changed scale?](https://vapor.discourse.group/t/box-outline-having-changed-scale/440)
**Author:** [@brummell](https://vapor.discourse.group/u/brummell)\ **Replies:** 2\ **Last updated:** [April 7, 2025, 5:19pm UTC](https://vapor.discourse.group/t/box-outline-having-changed-scale/440 "2025-04-07T17:19:34Z")
Hi! (Back to Vapor after a few years away!) I downloaded the new version and fired up some data via Brick of Values. In a volume renderer, I tried to change the physical extents of the domain to the correct aspect rat… --- ## [Issues with Importing 3D Model into Vapor](https://vapor.discourse.group/t/issues-with-importing-3d-model-into-vapor/428)
**Author:** [@rfaiza](https://vapor.discourse.group/u/rfaiza)\ **Replies:** 9\ **Last updated:** [March 25, 2025, 5:02pm UTC](https://vapor.discourse.group/t/issues-with-importing-3d-model-into-vapor/428 "2025-03-25T17:02:30Z")
I have been trying to use the renderer to import a 3D model of a wind turbine into vapor but it does not show up on the visualizer window. I tried to play around with the numbers of the scaling of the 3D model but the on… --- ## [Issue with poor quality image](https://vapor.discourse.group/t/issue-with-poor-quality-image/437)
**Author:** [@rfaiza](https://vapor.discourse.group/u/rfaiza)\ **Replies:** 1\ **Last updated:** [March 12, 2025, 3:26pm UTC](https://vapor.discourse.group/t/issue-with-poor-quality-image/437 "2025-03-12T15:26:33Z")
I have been having issues with the quality of my image renderer. It shows up as very blurry and I am not sure why that is. As you can see in the screenshot I have uploaded the image is very blurry and small in the upper … --- ## [Issues with importing WRF 4.6.1 wrfout into Vapor](https://vapor.discourse.group/t/issues-with-importing-wrf-4-6-1-wrfout-into-vapor/430)
**Author:** [@antonioparodi1974](https://vapor.discourse.group/u/antonioparodi1974)\ **Replies:** 12\ **Last updated:** [February 26, 2025, 6:05am UTC](https://vapor.discourse.group/t/issues-with-importing-wrf-4-6-1-wrfout-into-vapor/430 "2025-02-26T06:05:19Z")
Hello, i am running some experiments with WRF 4.6.1 for Hurricane Milton using moving nest (1.5 km grid spacing( I uploaded wrfout data into latest version of VAPOR (MAC) but i cannot get any acceptable visualization o… --- ## [Issue Installing Vapor Python](https://vapor.discourse.group/t/issue-installing-vapor-python/436)
**Author:** [@mfranke](https://vapor.discourse.group/u/mfranke)\ **Replies:** 2\ **Last updated:** [February 18, 2025, 10:24pm UTC](https://vapor.discourse.group/t/issue-installing-vapor-python/436 "2025-02-18T22:24:11Z")
I am attempting to install VAPOR Python on my mac via the terminal. I created and activated a new conda environment but when I try to download VAPOR itself, I get stuck with this error: ‘xcrun: error: invalid active dev… --- ## [VAPOR Python Documentation Missing](https://vapor.discourse.group/t/vapor-python-documentation-missing/425)
**Author:** [@ezx](https://vapor.discourse.group/u/ezx)\ **Replies:** 1\ **Last updated:** [December 6, 2024, 6:29pm UTC](https://vapor.discourse.group/t/vapor-python-documentation-missing/425 "2024-12-06T18:29:55Z")
Hi, I noticed that the documentation at https://ncar.github.io/VaporDocumentationWebsite/pythonAPIReference/classReference.html is missing, where it would provide a list of functions associated with each class/module. … --- ## [Where to find proper netCDF files and how to transform them into VDC files?](https://vapor.discourse.group/t/where-to-find-proper-netcdf-files-and-how-to-transform-them-into-vdc-files/418)
**Author:** [@Casper](https://vapor.discourse.group/u/Casper)\ **Replies:** 11\ **Last updated:** [November 6, 2024, 5:36pm UTC](https://vapor.discourse.group/t/where-to-find-proper-netcdf-files-and-how-to-transform-them-into-vdc-files/418 "2024-11-06T17:36:00Z")
So I’ve been looking at this program recently and have been wanting to use it for weather (specifically tornado) simulation. I just don’t know where to find the proper netCDF-CF files and how to transform them into VDC f… --- ## [Importing DCP dataset](https://vapor.discourse.group/t/importing-dcp-dataset/416)
**Author:** [@thopri](https://vapor.discourse.group/u/thopri)\ **Replies:** 3\ **Last updated:** [November 5, 2024, 5:20pm UTC](https://vapor.discourse.group/t/importing-dcp-dataset/416 "2024-11-05T17:20:35Z")
Hi, I am trying to import a DCP dataset into vapor but am getting an error message as follows The ncdump of the dataset is as follows. netcdf particles\_dcp\_static { dimensions: P = 8640 ; T = 1 ; va… --- ## [Different render performance between GUI and API](https://vapor.discourse.group/t/different-render-performance-between-gui-and-api/420)
**Author:** [@WTYue](https://vapor.discourse.group/u/WTYue)\ **Replies:** 2\ **Last updated:** [November 4, 2024, 5:10pm UTC](https://vapor.discourse.group/t/different-render-performance-between-gui-and-api/420 "2024-11-04T17:10:58Z")
Hi, I’ve been using Vapor to render images, and overall, it’s been a great experience. However, I’ve encountered a bit of an issue: the results rendered via the GUI and the Python API look different. As shown below, the… [Next page](https://vapor.discourse.group/latest.md?page=1)