# General **URL:** https://openradar.discourse.group/c/general/4.md [Latest](https://openradar.discourse.group/latest.md) · [Categories](https://openradar.discourse.group/categories.md) · [Tags](https://openradar.discourse.group/tags.md) --- ## [Welcome to Open Radar Discourse](https://openradar.discourse.group/t/welcome-to-open-radar-discourse/7)
**Author:** [@system](https://openradar.discourse.group/u/system)\ **Replies:** 0\ **Last updated:** [September 21, 2022, 12:44pm UTC](https://openradar.discourse.group/t/welcome-to-open-radar-discourse/7 "2022-09-21T12:44:48Z")
At a developer meeting held in the course of the ERAD2022 conference in Locarno, Switzerland, future plans and cross-package collaboration of the openradarscience community were intensively discussed. Bringing together … --- ## [About the General category](https://openradar.discourse.group/t/about-the-general-category/3)
**Author:** [@system](https://openradar.discourse.group/u/system)\ **Replies:** 0
--- ## [Teaching Radar Meteorology](https://openradar.discourse.group/t/teaching-radar-meteorology/685)
**Author:** [@kmuehlbauer](https://openradar.discourse.group/u/kmuehlbauer)\ **Replies:** 0\ **Last updated:** [August 27, 2026, 8:34am UTC](https://openradar.discourse.group/t/teaching-radar-meteorology/685 "2026-08-27T08:34:39Z")
Dear Community! Greetings from ERAD 2026 in Belgrade. Today afternoon is my talk on An Interactive Radar Meteorology Lab for Active Learning From Real Radar Data to Real-Time Processing and Interpretation The whole ta… --- ## [ERAD 2026 planning for abstracts and short course](https://openradar.discourse.group/t/erad-2026-planning-for-abstracts-and-short-course/669)
**Author:** [@scollis](https://openradar.discourse.group/u/scollis)\ **Replies:** 10\ **Last updated:** [August 24, 2026, 7:19am UTC](https://openradar.discourse.group/t/erad-2026-planning-for-abstracts-and-short-course/669 "2026-08-24T07:19:59Z")
Hey open radar plans. Abstract deadline for ERAD is approaching. Any thoughts on a submission that represents open radar? In addition I have been talking with the organizers about a course. keen to have folks like @kmue… --- ## [Looking for help building a passive mmWave radar detector](https://openradar.discourse.group/t/looking-for-help-building-a-passive-mmwave-radar-detector/679)
**Author:** [@medatlas](https://openradar.discourse.group/u/medatlas)\ **Replies:** 1\ **Last updated:** [June 25, 2026, 5:29am UTC](https://openradar.discourse.group/t/looking-for-help-building-a-passive-mmwave-radar-detector/679 "2026-06-25T05:29:35Z")
I’m part of a small initiative called Waveproof that is exploring technologies that help individuals better understand the wireless sensing environment around them. We are interested in developing a passive detector tha… --- ## [Example of Nested PyDDA Retrieval and Domain Configuration: pydda.retrieval.get\_dd\_wind\_field\_nested](https://openradar.discourse.group/t/example-of-nested-pydda-retrieval-and-domain-configuration-pydda-retrieval-get-dd-wind-field-nested/670)
**Author:** [@imd](https://openradar.discourse.group/u/imd)\ **Replies:** 0\ **Last updated:** [March 28, 2026, 8:52pm UTC](https://openradar.discourse.group/t/example-of-nested-pydda-retrieval-and-domain-configuration-pydda-retrieval-get-dd-wind-field-nested/670 "2026-03-28T20:52:14Z")
I would like to implement a nested domain approach. I came across the function pydda.retrieval.get\_dd\_wind\_field\_nested, but I would appreciate it if you could kindly provide a simple working example demonstrating how to… --- ## [Lrose-titan: Can you have more than one Rview window/session open for a particular radar?](https://openradar.discourse.group/t/lrose-titan-can-you-have-more-than-one-rview-window-session-open-for-a-particular-radar/667)
**Author:** [@frussell](https://openradar.discourse.group/u/frussell)\ **Replies:** 0\ **Last updated:** [February 26, 2026, 3:07am UTC](https://openradar.discourse.group/t/lrose-titan-can-you-have-more-than-one-rview-window-session-open-for-a-particular-radar/667 "2026-02-26T03:07:35Z")
Hi everyone, We have been unable to configure lrose-titan to have more than one Rview window/session open per radar. Does anyone know if this possible? We would like to have multiple users accessing and interacting with… --- ## [Visualizing BWER from a cross section](https://openradar.discourse.group/t/visualizing-bwer-from-a-cross-section/665)
**Author:** [@gene\_cgha](https://openradar.discourse.group/u/gene_cgha)\ **Replies:** 0\ **Last updated:** [January 26, 2026, 3:39am UTC](https://openradar.discourse.group/t/visualizing-bwer-from-a-cross-section/665 "2026-01-26T03:39:31Z")
Hi everyone, I’m currently working on radar cross-section analysis using PyArt and I’d like to ask for some guidance on how to properly choose or define the cross-section points/line when creating vertical cross section… --- ## [Dist\_beam or constant ROI](https://openradar.discourse.group/t/dist-beam-or-constant-roi/664)
**Author:** [@Joshwx](https://openradar.discourse.group/u/Joshwx)\ **Replies:** 2\ **Last updated:** [January 16, 2026, 10:34pm UTC](https://openradar.discourse.group/t/dist-beam-or-constant-roi/664 "2026-01-16T22:34:14Z")
Hi, I currently am working on a project involving 5 different radars and plotting them to a grid via grid\_from\_radars. This past week I have been trying to decide of whether using the dist\_beam function or a constant R… --- ## [Clarification on Choosing Master Radar and Grid Origin in PyDDA Dual-Doppler Retrievals](https://openradar.discourse.group/t/clarification-on-choosing-master-radar-and-grid-origin-in-pydda-dual-doppler-retrievals/650)
**Author:** [@imd](https://openradar.discourse.group/u/imd)\ **Replies:** 5\ **Last updated:** [November 25, 2025, 6:58pm UTC](https://openradar.discourse.group/t/clarification-on-choosing-master-radar-and-grid-origin-in-pydda-dual-doppler-retrievals/650 "2025-11-25T18:58:04Z")
Both radars have different locations. I am currently using the following code: link : Retrieving your first wind field — PyDDA 2.1.1 documentation grid\_ktlx = pyart.map.grid\_from\_radars(\[radar\_ktlx\], grid\_limits=grid\_li… --- ## [Creating a conda env with "all" radar packages](https://openradar.discourse.group/t/creating-a-conda-env-with-all-radar-packages/660)
**Author:** [@jorahu](https://openradar.discourse.group/u/jorahu)\ **Replies:** 2\ **Last updated:** [November 24, 2025, 11:24am UTC](https://openradar.discourse.group/t/creating-a-conda-env-with-all-radar-packages/660 "2025-11-24T11:24:35Z")
I have been trying to create a one single conda environment that would include wradlib, arm\_pyart, pysteps and other related packages (shapely, scipy, cartopy and so on), but have not been able to do it as the solver kee… --- ## [How does the Py-ART function pyart.map.grid\_from\_radars() handle cases where two radars are located at different site altitudes? For example, I am working with data from a C-band radar situated at 673 m MSL and an X-band radar located at 272 m MSL](https://openradar.discourse.group/t/how-does-the-py-art-function-pyart-map-grid-from-radars-handle-cases-where-two-radars-are-located-at-different-site-altitudes-for-example-i-am-working-with-data-from-a-c-band-radar-situated-at-673-m-msl-and-an-x-band-radar-located-at-272-m-msl/643)
**Author:** [@imd](https://openradar.discourse.group/u/imd)\ **Replies:** 2\ **Last updated:** [August 28, 2025, 3:52pm UTC](https://openradar.discourse.group/t/how-does-the-py-art-function-pyart-map-grid-from-radars-handle-cases-where-two-radars-are-located-at-different-site-altitudes-for-example-i-am-working-with-data-from-a-c-band-radar-situated-at-673-m-msl-and-an-x-band-radar-located-at-272-m-msl/643 "2025-08-28T15:52:00Z")
Currently, I am gridding them separately using the following calls: #X-Band: radar\_kict #C-Band: radar\_ktlx grid\_ktlx = pyart.map.grid\_from\_radars( \[radar\_ktlx\], grid\_limits=grid\_limits, grid\_shape=grid\_shape, gat… --- ## [Incorrect coordinates when transforming from RADOLAN to WGS84 using pyproj](https://openradar.discourse.group/t/incorrect-coordinates-when-transforming-from-radolan-to-wgs84-using-pyproj/640)
**Author:** [@milot](https://openradar.discourse.group/u/milot)\ **Replies:** 0\ **Last updated:** [August 27, 2025, 7:28am UTC](https://openradar.discourse.group/t/incorrect-coordinates-when-transforming-from-radolan-to-wgs84-using-pyproj/640 "2025-08-27T07:28:34Z")
Hello everyone, I’m trying to process DWD’s RADOLAN-RW data and display precipitation data on a map. Unfortunately, I’m getting incorrect geographic coordinates after the transformation and need help troubleshooting. M… --- ## [Weighting Function: Barnes vs Barnes2](https://openradar.discourse.group/t/weighting-function-barnes-vs-barnes2/639)
**Author:** [@ashlee.ziegler](https://openradar.discourse.group/u/ashlee.ziegler)\ **Replies:** 2\ **Last updated:** [August 25, 2025, 9:22pm UTC](https://openradar.discourse.group/t/weighting-function-barnes-vs-barnes2/639 "2025-08-25T21:22:00Z")
Hello, I am working on a project that requires me to use pyart.map.grid\_from\_radars. I was wondering what the difference between the Barnes and Barnes2 weighting functions were. Thanks! Ashlee --- ## [AMS Open Radar Short Course Projects](https://openradar.discourse.group/t/ams-open-radar-short-course-projects/638)
**Author:** [@mgrover1](https://openradar.discourse.group/u/mgrover1)\ **Replies:** 1\ **Last updated:** [August 24, 2025, 7:24pm UTC](https://openradar.discourse.group/t/ams-open-radar-short-course-projects/638 "2025-08-24T19:24:57Z")
Here is a link to the slide deck for projects! --- ## [Problème de package ](https://openradar.discourse.group/t/probleme-de-package/636)
**Author:** [@KABA-66](https://openradar.discourse.group/u/KABA-66)\ **Replies:** 1\ **Last updated:** [August 22, 2025, 5:32am UTC](https://openradar.discourse.group/t/probleme-de-package/636 "2025-08-22T05:32:52Z")
Bonjour chers Monsieurs et dames ,je m’appelle Cece Frank LAMAH, je suis étudiant en météorologie master 2 et c’est ma première fois d’être ici par le biais de Mr Alfonso. Je suis intéressé par les études liée au radar m… --- ## [Echo top height estimation feom ground radar data set](https://openradar.discourse.group/t/echo-top-height-estimation-feom-ground-radar-data-set/627)
**Author:** [@ankithva](https://openradar.discourse.group/u/ankithva)\ **Replies:** 0\ **Last updated:** [July 21, 2025, 7:47pm UTC](https://openradar.discourse.group/t/echo-top-height-estimation-feom-ground-radar-data-set/627 "2025-07-21T19:47:42Z")
Any body knows how to estimte /calculate echo top height from IMD indian S BAND doppler radar data, i tried with modified ETH algorithm proposed by Lakshmanan et al. (2013) with 5 years of radar data to calculate m… --- ## [Looking for References for R(KDP) Power Law Coefficients in \_coeff\_rkdp\_table() (Py-ART)](https://openradar.discourse.group/t/looking-for-references-for-r-kdp-power-law-coefficients-in-coeff-rkdp-table-py-art/626)
**Author:** [@eltonrobaina](https://openradar.discourse.group/u/eltonrobaina)\ **Replies:** 0\ **Last updated:** [July 18, 2025, 8:30pm UTC](https://openradar.discourse.group/t/looking-for-references-for-r-kdp-power-law-coefficients-in-coeff-rkdp-table-py-art/626 "2025-07-18T20:30:07Z")
Dear Open Radar community, I am currently investigating the R(KDP) power-law relationships used in the pyart.retrieve.qpe module from the Py-ART library and would like to ask for your help in identifying the original re… --- ## [Proper use of station data: pydda.constraints.get\_iem\_obs](https://openradar.discourse.group/t/proper-use-of-station-data-pydda-constraints-get-iem-obs/625)
**Author:** [@imd](https://openradar.discourse.group/u/imd)\ **Replies:** 0\ **Last updated:** [July 16, 2025, 8:41pm UTC](https://openradar.discourse.group/t/proper-use-of-station-data-pydda-constraints-get-iem-obs/625 "2025-07-16T20:41:11Z")
It would be helpful if someone could provide an example of using pydda.constraints.get\_iem\_obs(). Specifically, I’m noticing that I’m getting similar results with or without specifying points=st when retrieving wind data… --- ## [AMS Open Radar Short Course 2025?](https://openradar.discourse.group/t/ams-open-radar-short-course-2025/563)
**Author:** [@mgrover1](https://openradar.discourse.group/u/mgrover1)\ **Replies:** 9\ **Last updated:** [June 25, 2025, 8:37pm UTC](https://openradar.discourse.group/t/ams-open-radar-short-course-2025/563 "2025-06-25T20:37:49Z")
The deadline for submitting a short course proposal for the 2025 AMS International Radar Meeting in Toronto, Canada is fast approaching (March 1). Is there anyone who would be willing to take the lead in organizing this … --- ## [Third Py-ART Development Roadmap Survey](https://openradar.discourse.group/t/third-py-art-development-roadmap-survey/617)
**Author:** [@zssherman](https://openradar.discourse.group/u/zssherman)\ **Replies:** 0\ **Last updated:** [June 16, 2025, 5:10pm UTC](https://openradar.discourse.group/t/third-py-art-development-roadmap-survey/617 "2025-06-16T17:10:12Z")
Hello! Every 5 years, the Py-ART development team creates a roadmap. This roadmap creates a timeline of development goals and more based on survey feedback from stakeholders and the community. If individuals have time, … --- ## [Scheduling Open Radar Community Calls](https://openradar.discourse.group/t/scheduling-open-radar-community-calls/607)
**Author:** [@mgrover1](https://openradar.discourse.group/u/mgrover1)\ **Replies:** 1\ **Last updated:** [June 12, 2025, 2:54pm UTC](https://openradar.discourse.group/t/scheduling-open-radar-community-calls/607 "2025-06-12T14:54:38Z")
Hi All! Let’s start up the community calls again! Please fill out this survey so we can schedule a time the next couple weeks; plan to keep this a recurring monthly meeting! --- ## [Impact assessment of different scan settings on QPE](https://openradar.discourse.group/t/impact-assessment-of-different-scan-settings-on-qpe/605)
**Author:** [@binomaiheu](https://openradar.discourse.group/u/binomaiheu)\ **Replies:** 3\ **Last updated:** [June 4, 2025, 2:56pm UTC](https://openradar.discourse.group/t/impact-assessment-of-different-scan-settings-on-qpe/605 "2025-06-04T14:56:42Z")
Dear community, At the Flanders Environment Agency, we’re maintaining a dual pol C band radar at Helchteren which is used for generating qpe for Belgium in collaboration with the Belgian royal met office (RMI). The scan… --- ## [Introduce yourself to the community!](https://openradar.discourse.group/t/introduce-yourself-to-the-community/176)
**Author:** [@scollis](https://openradar.discourse.group/u/scollis)\ **Replies:** 22\ **Last updated:** [June 4, 2025, 7:03am UTC](https://openradar.discourse.group/t/introduce-yourself-to-the-community/176 "2025-06-04T07:03:22Z")
The community is growing! As we continue on our mission of democratizing knowledge in the weather radar community let’s introduce ourselves. Minimum information should be: Your real name Your location and, if different… --- ## [Writing a New UF File with Additional Variables](https://openradar.discourse.group/t/writing-a-new-uf-file-with-additional-variables/602)
**Author:** [@gene\_cgha](https://openradar.discourse.group/u/gene_cgha)\ **Replies:** 1\ **Last updated:** [May 21, 2025, 6:00am UTC](https://openradar.discourse.group/t/writing-a-new-uf-file-with-additional-variables/602 "2025-05-21T06:00:12Z")
I’m currently working with radar data in UF format and I’m trying to write a new UF file based on an existing one, but with some additional derived variables included. I’ve managed to write a new UF file using Py-ART, bu… --- ## [Can anyone explain the filter\_window and filter\_order parameters in get\_dd\_wind\_field?](https://openradar.discourse.group/t/can-anyone-explain-the-filter-window-and-filter-order-parameters-in-get-dd-wind-field/589)
**Author:** [@imd](https://openradar.discourse.group/u/imd)\ **Replies:** 1\ **Last updated:** [April 14, 2025, 11:07am UTC](https://openradar.discourse.group/t/can-anyone-explain-the-filter-window-and-filter-order-parameters-in-get-dd-wind-field/589 "2025-04-14T11:07:11Z")
I’m interested in understanding the filter\_window and filter\_order parameters in the get\_dd\_wind\_field function. Specifically, I’d like to know how they affect the output and why I don’t see much difference between filte… --- ## [Problem when retrives using pydda](https://openradar.discourse.group/t/problem-when-retrives-using-pydda/597)
**Author:** [@hko.benng](https://openradar.discourse.group/u/hko.benng)\ **Replies:** 0\ **Last updated:** [May 2, 2025, 7:58am UTC](https://openradar.discourse.group/t/problem-when-retrives-using-pydda/597 "2025-05-02T07:58:03Z")
Hello, I would like to know about the pydda.retrieval.get\_dd\_wind\_field(), the sequence of the first input param(“Grids”) will affect the result? I am using 7 radars to retrives and I got the different result if the sequ… --- ## [Saving PyDDA Output Grids to NetCDF Files and Using Output Grids in another Script](https://openradar.discourse.group/t/saving-pydda-output-grids-to-netcdf-files-and-using-output-grids-in-another-script/592)
**Author:** [@BookWorm2022](https://openradar.discourse.group/u/BookWorm2022)\ **Replies:** 0\ **Last updated:** [April 18, 2025, 7:38pm UTC](https://openradar.discourse.group/t/saving-pydda-output-grids-to-netcdf-files-and-using-output-grids-in-another-script/592 "2025-04-18T19:38:44Z")
Hey, y’all! I’m currently working on a Dual-Doppler Analysis for my Master’s thesis, and I’m using PyDDA since previous students in my research group have used it. However, because I want to play around with plotting t… --- ## [Formatting NEXRAD for WRFDA](https://openradar.discourse.group/t/formatting-nexrad-for-wrfda/578)
**Author:** [@ebercosh](https://openradar.discourse.group/u/ebercosh)\ **Replies:** 3\ **Last updated:** [March 26, 2025, 2:44pm UTC](https://openradar.discourse.group/t/formatting-nexrad-for-wrfda/578 "2025-03-26T14:44:08Z")
Hello, I am attempting to use NEXRAD level 2 data with the Weather Research and Forecasting (WRF) model data assimilation program (WRFDA). From my understanding, in order for WRFDA to read in the radar data, it needs to… --- ## [Cfad of reflectivity from gpm dpr 2a for for stratiform and convective](https://openradar.discourse.group/t/cfad-of-reflectivity-from-gpm-dpr-2a-for-for-stratiform-and-convective/553)
**Author:** [@ankithva](https://openradar.discourse.group/u/ankithva)\ **Replies:** 5\ **Last updated:** [March 3, 2025, 10:16am UTC](https://openradar.discourse.group/t/cfad-of-reflectivity-from-gpm-dpr-2a-for-for-stratiform-and-convective/553 "2025-03-03T10:16:40Z")
Guys ,iam struggling to plot CFAD OF REFLECTIVITY for stratiform and convective for a specific extent region FROM GPM DPR 2A, can any one help me ? [Next page](https://openradar.discourse.group/c/general/4.md?page=1)