Dewey Dunnington
@paleolimbot.bsky.social
Scaling spatial computing at Wherobots, Inc. ApacheArrow PMC, #gischat, #rstats, ex Voltron Data.
Reposted by Dewey Dunnington
Released this week: Version 22 of the ADBC libraries and drivers.
This release includes updates to the ADBC libraries for 8 languages, and improvements to the 4 ADBC drivers that are maintained in the apache/arrow-adbc repository. See the blog for more details: arrow.apache.org/blog/2026/01...
This release includes updates to the ADBC libraries for 8 languages, and improvements to the 4 ADBC drivers that are maintained in the apache/arrow-adbc repository. See the blog for more details: arrow.apache.org/blog/2026/01...
January 11, 2026 at 12:18 AM
Released this week: Version 22 of the ADBC libraries and drivers.
This release includes updates to the ADBC libraries for 8 languages, and improvements to the 4 ADBC drivers that are maintained in the apache/arrow-adbc repository. See the blog for more details: arrow.apache.org/blog/2026/01...
This release includes updates to the ADBC libraries for 8 languages, and improvements to the 4 ADBC drivers that are maintained in the apache/arrow-adbc repository. See the blog for more details: arrow.apache.org/blog/2026/01...
Reposted by Dewey Dunnington
Introducing gdalcli by Andrew Brown -- an R frontend to GDAL’s unified CLI (≥3.11) 🌐
Compose and execute GDAL workflows with pipe-friendly functions.
Learn more: github.com/brownag/gdal...
#RStats #GDAL #Geospatial #OpenSource #RSpatial
Compose and execute GDAL workflows with pipe-friendly functions.
Learn more: github.com/brownag/gdal...
#RStats #GDAL #Geospatial #OpenSource #RSpatial
GitHub - brownag/gdalcli: An R Frontend for the GDAL CLI
An R Frontend for the GDAL CLI. Contribute to brownag/gdalcli development by creating an account on GitHub.
github.com
January 4, 2026 at 3:01 PM
Introducing gdalcli by Andrew Brown -- an R frontend to GDAL’s unified CLI (≥3.11) 🌐
Compose and execute GDAL workflows with pipe-friendly functions.
Learn more: github.com/brownag/gdal...
#RStats #GDAL #Geospatial #OpenSource #RSpatial
Compose and execute GDAL workflows with pipe-friendly functions.
Learn more: github.com/brownag/gdal...
#RStats #GDAL #Geospatial #OpenSource #RSpatial
Reposted by Dewey Dunnington
Reposted by Dewey Dunnington
Apache SedonaDB 0.2.0 is now available. Download here: buff.ly/k9LRlyC
SedonaDB is the first open source, single-node analytical database engine that treats spatial data as a first-class citizen. It is developed as a subproject of Apache Sedona. #opensource
SedonaDB is the first open source, single-node analytical database engine that treats spatial data as a first-class citizen. It is developed as a subproject of Apache Sedona. #opensource
December 23, 2025 at 11:30 PM
Apache SedonaDB 0.2.0 is now available. Download here: buff.ly/k9LRlyC
SedonaDB is the first open source, single-node analytical database engine that treats spatial data as a first-class citizen. It is developed as a subproject of Apache Sedona. #opensource
SedonaDB is the first open source, single-node analytical database engine that treats spatial data as a first-class citizen. It is developed as a subproject of Apache Sedona. #opensource
Excited to announce SedonaDB 0.2.0! Highlights include reading spatial file formats via GDAL/OGR, improved GeoParquet IO, Python @arrow.apache.org UDFs, and 40+ additional functions.
December 9, 2025 at 8:03 PM
Excited to announce SedonaDB 0.2.0! Highlights include reading spatial file formats via GDAL/OGR, improved GeoParquet IO, Python @arrow.apache.org UDFs, and 40+ additional functions.
Reposted by Dewey Dunnington
Here are the slides and recordings from our Boston DataFusion Meetup in September:
Youtube: youtu.be/wCAud478Dg8
Slides (pdf): drive.google.com/file/d/18KGH...
Youtube: youtu.be/wCAud478Dg8
Slides (pdf): drive.google.com/file/d/18KGH...
Apache DataFusion Boston Meetup: September 12, 2025
YouTube video by Andrew Lamb
youtu.be
December 4, 2025 at 11:51 AM
Here are the slides and recordings from our Boston DataFusion Meetup in September:
Youtube: youtu.be/wCAud478Dg8
Slides (pdf): drive.google.com/file/d/18KGH...
Youtube: youtu.be/wCAud478Dg8
Slides (pdf): drive.google.com/file/d/18KGH...
Reposted by Dewey Dunnington
At FOSS4G Auckland 2025, we, MIERUNE Inc., had four talks about various topics from GTFS to GeoArrow. This is a quick summary of the presentation titles and the links to the slides🔗
dev.to/mierune/foss...
dev.to/mierune/foss...
FOSS4G Auckland 2025
Kia ora! Last week, we were in Auckland, New Zealand, for FOSS4G 2025. We had a great time and gave...
dev.to
November 30, 2025 at 2:41 AM
At FOSS4G Auckland 2025, we, MIERUNE Inc., had four talks about various topics from GTFS to GeoArrow. This is a quick summary of the presentation titles and the links to the slides🔗
dev.to/mierune/foss...
dev.to/mierune/foss...
Reposted by Dewey Dunnington
Wohoo, QGIS Arrow support has been merged: https://github.com/qgis/QGIS/pull/63749
Thanks @paleolimbot & @nyalld et al.
Looking forward to testing it out soon 🤩
#qgis #arrow #gischat
Thanks @paleolimbot & @nyalld et al.
Looking forward to testing it out soon 🤩
#qgis #arrow #gischat
Implement QgsArrowIterator to iterate over features as batches of ArrowArray by paleolimbot · Pull Request #63749 · qgis/QGIS
Description As encouraged by @nyalldawson! https://mastodon.social/@nyalld/115459416976982489 The motivation is to eliminate the need for per-feature iteration in Python to maintain the fidelity of...
github.com
November 28, 2025 at 8:44 AM
Wohoo, QGIS Arrow support has been merged: https://github.com/qgis/QGIS/pull/63749
Thanks @paleolimbot & @nyalld et al.
Looking forward to testing it out soon 🤩
#qgis #arrow #gischat
Thanks @paleolimbot & @nyalld et al.
Looking forward to testing it out soon 🤩
#qgis #arrow #gischat
Reposted by Dewey Dunnington
Starring in a few minutes: It’s QGIS Open Day today! 🎉 Don’t miss our two awesome talks. Grab all links and info on the wiki: https://github.com/qgis/QGIS/wiki/QOD-November-2025
#qgis #gischat
#qgis #gischat
QOD November 2025
QGIS is a free, open source, cross platform (lin/win/mac) geographical information system (GIS) - qgis/QGIS
github.com
November 28, 2025 at 1:38 PM
Starring in a few minutes: It’s QGIS Open Day today! 🎉 Don’t miss our two awesome talks. Grab all links and info on the wiki: https://github.com/qgis/QGIS/wiki/QOD-November-2025
#qgis #gischat
#qgis #gischat
I love this country
November 26, 2025 at 2:59 PM
I love this country
#30DayMapChallenege day 24: The Mud Lakes of Nova Scotia! Here I use the SedonaDB #Rstats bindings with ggspatial+utils for the cartography. The Nova Scotia boundary here is from Overture Maps "divisions" which works great in SedonaDB/R! dewey.dunnington.ca/post/2025/da...
November 24, 2025 at 3:37 PM
#30DayMapChallenege day 24: The Mud Lakes of Nova Scotia! Here I use the SedonaDB #Rstats bindings with ggspatial+utils for the cartography. The Nova Scotia boundary here is from Overture Maps "divisions" which works great in SedonaDB/R! dewey.dunnington.ca/post/2025/da...
Reposted by Dewey Dunnington
Save the date -- Wednesday July 22, 2026 for the first Apache DataFusion meetup in Denver: luma.com/jsu6faie
Denver Apache DataFusion Meetup · Luma
Join us for an evening of talks, panel discussion, and community discussion about Apache DataFusion and its growing role in modern data infrastructure. We will…
luma.com
November 23, 2025 at 11:14 AM
Save the date -- Wednesday July 22, 2026 for the first Apache DataFusion meetup in Denver: luma.com/jsu6faie
Reposted by Dewey Dunnington
I talked about GeoArrow at FOSS4G Auckland 2025! Here's my slides.
GeoArrow on Web; Can We Live Without GeoJSON?
yutannihilation.github.io/foss4g-2025-...
GeoArrow on Web; Can We Live Without GeoJSON?
yutannihilation.github.io/foss4g-2025-...
GeoArrow on Web; Can We Live Without GeoJSON? - Slidev
yutannihilation.github.io
November 21, 2025 at 10:11 AM
I talked about GeoArrow at FOSS4G Auckland 2025! Here's my slides.
GeoArrow on Web; Can We Live Without GeoJSON?
yutannihilation.github.io/foss4g-2025-...
GeoArrow on Web; Can We Live Without GeoJSON?
yutannihilation.github.io/foss4g-2025-...
It was a joy today to present alongside fellow DataFusion contributors and users at the @apachedatafusion.bsky.social meetup in Boston! Slides from my talk are at dewey.dunnington.ca/slides/df2025 and hopefully the others will be posted soon!
November 13, 2025 at 3:17 AM
It was a joy today to present alongside fellow DataFusion contributors and users at the @apachedatafusion.bsky.social meetup in Boston! Slides from my talk are at dewey.dunnington.ca/slides/df2025 and hopefully the others will be posted soon!
Reposted by Dewey Dunnington
Here is a nice examination of the benefits of building new systems using the extensibility of @apachedatafusion.bsky.social vs other systems. www.bauplanlabs.com/post/duck-hu...
Duck Hunt: moving Bauplan from DuckDB to DataFusion
Bauplan's journey from DuckDB to Apache DataFusion: how switching SQL engines doubled query performance on Iceberg lakehouses while enabling greater hackability
www.bauplanlabs.com
November 11, 2025 at 3:41 PM
Here is a nice examination of the benefits of building new systems using the extensibility of @apachedatafusion.bsky.social vs other systems. www.bauplanlabs.com/post/duck-hu...
Reposted by Dewey Dunnington
Apache Arrow 22.0.0 is now available for download: buff.ly/rFyGsDV
This release includes 213 resolved issues. #opensource
This release includes 213 resolved issues. #opensource
November 9, 2025 at 8:01 PM
Apache Arrow 22.0.0 is now available for download: buff.ly/rFyGsDV
This release includes 213 resolved issues. #opensource
This release includes 213 resolved issues. #opensource
Reposted by Dewey Dunnington
This @posit.co::conf(2025) talk is everything: "The geospatial suite for Arrow is relatively new...so this is a PSA that it exists and it's really powerful and impressive. I actually also found it very easy to use...and I didn't really have much trouble learning it" www.youtube.com/watch?v=EHyg...
Make Big Geospatial Data Accessible with Arrow (Cari Gostic, Sonoma Technology) | posit::conf(2025)
YouTube video by Posit PBC
www.youtube.com
November 7, 2025 at 10:49 PM
This @posit.co::conf(2025) talk is everything: "The geospatial suite for Arrow is relatively new...so this is a PSA that it exists and it's really powerful and impressive. I actually also found it very easy to use...and I didn't really have much trouble learning it" www.youtube.com/watch?v=EHyg...
Reposted by Dewey Dunnington
RE: https://fosstodon.org/@underdarkGIS/113300727609804149
Over 250 #geospatial #gischat counts to follow: https://gist.github.com/anitagraser/a37118d74b839602e0f474375f548dfd
Over 250 #geospatial #gischat counts to follow: https://gist.github.com/anitagraser/a37118d74b839602e0f474375f548dfd
Are you new to the #fediverse #gischat or looking for more #geospatial connections?
I've updated my Geospatial and #SpatialDataScience lists. Now with more than 200 accounts you shouldn't miss.
Details: https://anitagraser.com/2024/02/03/finding-geospatial-accounts-on-mastodon/
#osgeo #gis […]
I've updated my Geospatial and #SpatialDataScience lists. Now with more than 200 accounts you shouldn't miss.
Details: https://anitagraser.com/2024/02/03/finding-geospatial-accounts-on-mastodon/
#osgeo #gis […]
Original post on fosstodon.org
fosstodon.org
November 7, 2025 at 10:09 PM
Day 6 of the #30DayMapChallenege is Dimensions! Here I create a beautiful space-time dataset with M values and a proper temporal CRS with SedonaDB...and then ignore it because I couldn't find a tool that can animate M values (let me know if there is one!). dewey.dunnington.ca/post/2025/da...
November 7, 2025 at 3:20 PM
Day 6 of the #30DayMapChallenege is Dimensions! Here I create a beautiful space-time dataset with M values and a proper temporal CRS with SedonaDB...and then ignore it because I couldn't find a tool that can animate M values (let me know if there is one!). dewey.dunnington.ca/post/2025/da...
Day 5 of the #30DayMapChallenege! In which I attempt simple LiDAR processing for the first time using SedonaDB. Behold...a high-resolution elevation map of what's under my feet in my hometown of Winnipeg, Manitoba. Code + walk through included! dewey.dunnington.ca/post/2025/da...
November 6, 2025 at 3:02 PM
Day 5 of the #30DayMapChallenege! In which I attempt simple LiDAR processing for the first time using SedonaDB. Behold...a high-resolution elevation map of what's under my feet in my hometown of Winnipeg, Manitoba. Code + walk through included! dewey.dunnington.ca/post/2025/da...
Excited to be one of the attendees and present our work on the DataFusion-powered SedonaDB alongside a great lineup of talks! If you're in the Boston area come and say hi!
We are holding the next Apache DataFusion meetup next Wednesday Nov 12 in Boston. lu.ma/w9pw5rce
Boston Apache DataFusion Meetup · Luma
Join us for an evening of talks, panel discussion, and community discussion about Apache DataFusion and its growing role in modern data infrastructure. This…
lu.ma
November 4, 2025 at 6:33 PM
Excited to be one of the attendees and present our work on the DataFusion-powered SedonaDB alongside a great lineup of talks! If you're in the Boston area come and say hi!
#30DayMapChallenge day three is polygons...here's a map I made for my Ph.D. thesis...a standard Fig 1 for lakes papers. This paper is about land use and how it is resolved in sediment, so I tried to communicate urban development in each catchment using very thin roads. This one is 100% QGIS!
November 3, 2025 at 3:22 PM
#30DayMapChallenge day three is polygons...here's a map I made for my Ph.D. thesis...a standard Fig 1 for lakes papers. This paper is about land use and how it is resolved in sediment, so I tried to communicate urban development in each catchment using very thin roads. This one is 100% QGIS!
#30DayMapChallenege day two is lines! Here's an animated version of the stream traversal with SedonaDB post I made a few weeks ago but using the Gaspereau River, which drains Gaspereau Lake (featured in day one). dewey.dunnington.ca/post/2025/da...
November 2, 2025 at 1:43 PM
#30DayMapChallenege day two is lines! Here's an animated version of the stream traversal with SedonaDB post I made a few weeks ago but using the Gaspereau River, which drains Gaspereau Lake (featured in day one). dewey.dunnington.ca/post/2025/da...
Day 1 of the #30DayMapChallenege is points! This one is entitled "Always Plot Your Test Data"...I've been using data called ns-water_point for a long time without properly inspecting it. It turns out the points are almost all rocks! They're pretty much all rocks. dewey.dunnington.ca/post/2025/da...
November 1, 2025 at 2:58 PM
Day 1 of the #30DayMapChallenege is points! This one is entitled "Always Plot Your Test Data"...I've been using data called ns-water_point for a long time without properly inspecting it. It turns out the points are almost all rocks! They're pretty much all rocks. dewey.dunnington.ca/post/2025/da...
Reposted by Dewey Dunnington
GeoArrow is undoubtedly a superior format to GeoJSON, yet GeoJSON remains the dominant standard in web browsers. I'm hoping we'll reach a point where using GeoArrow is just as easy and seamless as using GeoJSON. I hope my talk helps to figure out what's still missing in the ecosystem.
November 1, 2025 at 11:55 AM
GeoArrow is undoubtedly a superior format to GeoJSON, yet GeoJSON remains the dominant standard in web browsers. I'm hoping we'll reach a point where using GeoArrow is just as easy and seamless as using GeoJSON. I hope my talk helps to figure out what's still missing in the ecosystem.