# \#data **URL:** https://openradar.discourse.group/tag/data/8.md [Latest](https://openradar.discourse.group/latest.md) · [Categories](https://openradar.discourse.group/categories.md) · [Tags](https://openradar.discourse.group/tags.md) --- ## [Order of radar rays in a sweep](https://openradar.discourse.group/t/order-of-radar-rays-in-a-sweep/630)
**Author:** [@guntherhaase](https://openradar.discourse.group/u/guntherhaase)\ **Replies:** 4\ **Last updated:** [September 2, 2025, 1:02pm UTC](https://openradar.discourse.group/t/order-of-radar-rays-in-a-sweep/630 "2025-09-02T13:02:35Z")
Do you know if FM301 requires a specific order of radar rays in a sweep, e.g. based on time or angle? I could find any information on this in the documentation. --- ## [FM301 attribute sun\_power\_hc](https://openradar.discourse.group/t/fm301-attribute-sun-power-hc/631)
**Author:** [@guntherhaase](https://openradar.discourse.group/u/guntherhaase)\ **Replies:** 3\ **Last updated:** [August 13, 2025, 2:18pm UTC](https://openradar.discourse.group/t/fm301-attribute-sun-power-hc/631 "2025-08-13T14:18:38Z")
What is the exact definition of the FM301 attribute /radar\_calibration/sun\_power\_hc and what is its purpose? --- ## [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… --- ## [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 ? --- ## [How to plot gpm dpr level 2 data with convective stratiform seperation in python](https://openradar.discourse.group/t/how-to-plot-gpm-dpr-level-2-data-with-convective-stratiform-seperation-in-python/534)
**Author:** [@ankithva007](https://openradar.discourse.group/u/ankithva007)\ **Replies:** 1\ **Last updated:** [November 20, 2024, 3:56pm UTC](https://openradar.discourse.group/t/how-to-plot-gpm-dpr-level-2-data-with-convective-stratiform-seperation-in-python/534 "2024-11-20T15:56:52Z")
How to plot for a specific time step and location of convective stratiform and others in python using Gpm dpr data (prevptype) --- ## [Retrieve.kdp\_maesake unexpected output problem with Py-ART](https://openradar.discourse.group/t/retrieve-kdp-maesake-unexpected-output-problem-with-py-art/527)
**Author:** [@Woutv](https://openradar.discourse.group/u/Woutv)\ **Replies:** 2\ **Last updated:** [November 11, 2024, 3:45pm UTC](https://openradar.discourse.group/t/retrieve-kdp-maesake-unexpected-output-problem-with-py-art/527 "2024-11-11T15:45:48Z")
Hello I am trying to create KDP values from PhiDP values from a Radar. The radardata I can extract are .VOL files will not be compatible with Py-ART. So I wrote a code to transform the file structure so that it can be s… --- ## [Suggest me a method to classify stratiform and convective rate and to extract the corresponding reflectivity value](https://openradar.discourse.group/t/suggest-me-a-method-to-classify-stratiform-and-convective-rate-and-to-extract-the-corresponding-reflectivity-value/435)
**Author:** [@ankithva](https://openradar.discourse.group/u/ankithva)\ **Replies:** 1\ **Last updated:** [March 22, 2024, 1:22pm UTC](https://openradar.discourse.group/t/suggest-me-a-method-to-classify-stratiform-and-convective-rate-and-to-extract-the-corresponding-reflectivity-value/435 "2024-03-22T13:22:12Z")
suggest me a method to classify stratiform and convective rate and to extract the corresponding reflectivity value (using gridded IMD doppler weather radar data) --- ## [Use wradlib functions with DWD BUFR data](https://openradar.discourse.group/t/use-wradlib-functions-with-dwd-bufr-data/386)
**Author:** [@atmoboran](https://openradar.discourse.group/u/atmoboran)\ **Replies:** 3\ **Last updated:** [January 29, 2024, 11:10am UTC](https://openradar.discourse.group/t/use-wradlib-functions-with-dwd-bufr-data/386 "2024-01-29T11:10:26Z")
Hello everyone, I’m sorry to say, but it’s about BUFR - the format we all admire so much. So I’m trying to handle a dataset from DWD (it’s a ras08 - precipitation scan - DWD BUFR ras08 - Google Drive ; here is an examp… --- ## [Compute CAPPI from Météo-France BUFR PPI](https://openradar.discourse.group/t/compute-cappi-from-meteo-france-bufr-ppi/368)
**Author:** [@fruboldi](https://openradar.discourse.group/u/fruboldi)\ **Replies:** 4\ **Last updated:** [December 13, 2023, 8:39am UTC](https://openradar.discourse.group/t/compute-cappi-from-meteo-france-bufr-ppi/368 "2023-12-13T08:39:58Z")
Hello, I am a newcomer in the weather radar community and I have to compute CAPPIs starting from PPIs contained in some BUFR files I obtained from Météo-France. I successfully used decbufr from OPERA to decode one of … --- ## [Converting Reflectivity to Rainfall](https://openradar.discourse.group/t/converting-reflectivity-to-rainfall/346)
**Author:** [@Parrot](https://openradar.discourse.group/u/Parrot)\ **Replies:** 3\ **Last updated:** [November 16, 2023, 1:01pm UTC](https://openradar.discourse.group/t/converting-reflectivity-to-rainfall/346 "2023-11-16T13:01:23Z")
I extracted and visualized the raw reflectivity data, now I am trying to convert it into the rainfall. I’ve already looked up and tried wradlib example, but unfortunately stuck a little. --- ## [How to plot the pseudo RHI for Rainbow 5 by using vol data format](https://openradar.discourse.group/t/how-to-plot-the-pseudo-rhi-for-rainbow-5-by-using-vol-data-format/338)
**Author:** [@nissa03](https://openradar.discourse.group/u/nissa03)\ **Replies:** 8\ **Last updated:** [November 2, 2023, 9:48am UTC](https://openradar.discourse.group/t/how-to-plot-the-pseudo-rhi-for-rainbow-5-by-using-vol-data-format/338 "2023-11-02T09:48:54Z")
Hi, I’m just new here. I want to plot RHI for radar data Rainbow 5, but all the data that I have is in the (.vol) format. I managed to plot the PPI but couldn’t for RHI. I tried to do with the pyart but it shows “TypeE… --- ## [Decoding error reading CfRadial1 file](https://openradar.discourse.group/t/decoding-error-reading-cfradial1-file/80)
**Author:** [@adithiyrnair](https://openradar.discourse.group/u/adithiyrnair)\ **Replies:** 23\ **Last updated:** [September 10, 2023, 7:22am UTC](https://openradar.discourse.group/t/decoding-error-reading-cfradial1-file/80 "2023-09-10T07:22:43Z")
I am trying to plot CAPPI and MAX Z using wradlib. The following is the error unable to decode time units ‘seconds since yyyy-mm-ddThh:mm:ssZ’ with “calendar ‘gregorian’”. Try opening your dataset with decode\_times=False… --- ## [How to perform attenuation correction without NCP field](https://openradar.discourse.group/t/how-to-perform-attenuation-correction-without-ncp-field/268)
**Author:** [@Gitbix](https://openradar.discourse.group/u/Gitbix)\ **Replies:** 2\ **Last updated:** [July 20, 2023, 1:15pm UTC](https://openradar.discourse.group/t/how-to-perform-attenuation-correction-without-ncp-field/268 "2023-07-20T13:15:13Z")
Hello, I am to perform attenuation correction using the raw RHI dataset in (netCDF) format, but in the metadata, there is no normalized coherent power (NCP) product. How do I go about fixing it in the data to perform th… --- ## [How to filter spectrum width from ppi files?](https://openradar.discourse.group/t/how-to-filter-spectrum-width-from-ppi-files/253)
**Author:** [@Mehzooz](https://openradar.discourse.group/u/Mehzooz)\ **Replies:** 1\ **Last updated:** [June 20, 2023, 2:00pm UTC](https://openradar.discourse.group/t/how-to-filter-spectrum-width-from-ppi-files/253 "2023-06-20T14:00:43Z")
I have a ppi file and i need the spectrum width data for the 16th sweep(85 degree elevation).I am getting spectrum width data above 7 km but there are no clouds above that height(verified with reflectivity and doppler ve… --- ## [Extract A Radar Column Along a Line of Azimuth](https://openradar.discourse.group/t/extract-a-radar-column-along-a-line-of-azimuth/207)
**Author:** [@Gitbix](https://openradar.discourse.group/u/Gitbix)\ **Replies:** 14\ **Last updated:** [April 11, 2023, 4:29pm UTC](https://openradar.discourse.group/t/extract-a-radar-column-along-a-line-of-azimuth/207 "2023-04-11T16:29:24Z")
Using the attached figure as an example, I want to extract column data along a 242 degree azimuth black dotted line from radar (0 -125 km) volume PPI plot (0.8 deg elevation). The file is in NC format. How can I go about… --- ## [Dask Demo Day - Scaling Weather Radar Data with Dask](https://openradar.discourse.group/t/dask-demo-day-scaling-weather-radar-data-with-dask/198)
**Author:** [@mgrover1](https://openradar.discourse.group/u/mgrover1)\ **Replies:** 0\ **Last updated:** [March 16, 2023, 7:24pm UTC](https://openradar.discourse.group/t/dask-demo-day-scaling-weather-radar-data-with-dask/198 "2023-03-16T19:24:39Z")
This morning, I gave a presentation at the monthly Dask Demo Day event, covering Scaling Weather Data with Dask! If you are interested in the content covered here, check out the repository with the associated notebook… --- ## [2/25/23 KTWX Unknown Anomaly](https://openradar.discourse.group/t/2-25-23-ktwx-unknown-anomaly/184)
**Author:** [@wx-pyzik](https://openradar.discourse.group/u/wx-pyzik)\ **Replies:** 2\ **Last updated:** [March 4, 2023, 1:11am UTC](https://openradar.discourse.group/t/2-25-23-ktwx-unknown-anomaly/184 "2023-03-04T01:11:45Z")
Around 16:45z today on KTWX, an interesting signature was found converging onto a lake near Jeffery Energy Center near the Emmett Township in Kansas. Around 22:40z, a large number of signatures was found dispersing from … --- ## [AttributeError: Module 'osgeo.osr' is not installed](https://openradar.discourse.group/t/attributeerror-module-osgeo-osr-is-not-installed/84)
**Author:** [@SandeepAllampalli](https://openradar.discourse.group/u/SandeepAllampalli)\ **Replies:** 3\ **Last updated:** [November 3, 2022, 11:23am UTC](https://openradar.discourse.group/t/attributeerror-module-osgeo-osr-is-not-installed/84 "2022-11-03T11:23:34Z")
Hello there, Python version: 3.9.12 wradlib version: 1.17.0 I tried to reinstall the latest version of wradlib using conda in my virtual environment. It got successfully installed. When I was trying to read the data s… --- ## [OSError: 'WRADLIB\_DATA' path 'C:/Users/Admin/wradlib-data' does not exist](https://openradar.discourse.group/t/oserror-wradlib-data-path-c-users-admin-wradlib-data-does-not-exist/61)
**Author:** [@SandeepAllampalli](https://openradar.discourse.group/u/SandeepAllampalli)\ **Replies:** 5\ **Last updated:** [November 3, 2022, 6:50am UTC](https://openradar.discourse.group/t/oserror-wradlib-data-path-c-users-admin-wradlib-data-does-not-exist/61 "2022-11-03T06:50:28Z")
Hi there, Python version: 3.9.12 wradlib version: 1.16.2 I was trying to run the following code. But it throws me this error. f = wrl.util.get\_wradlib\_data\_file(file\_path\[0\]) data, metadata = wrl.io.read\_radolan\_comp… --- ## [PyART and cfradial](https://openradar.discourse.group/t/pyart-and-cfradial/63)
**Author:** [@nick.guy](https://openradar.discourse.group/u/nick.guy)\ **Replies:** 7\ **Last updated:** [October 21, 2022, 6:40pm UTC](https://openradar.discourse.group/t/pyart-and-cfradial/63 "2022-10-21T18:40:05Z")
It’s been a couple of years since I really looked into the latest cfradial formats. From looking at the documentation the cfradial1.4 format was a 1D varying gates storage. The cfradial2.0 is a 2-D (time, range) storage …