Dewey Dunnington

Does SedonaDB's KNN join help at all? I haven't wired up nice dplyrish syntax for everything yet but the SQL isn't too bad.

📖 Apache Parquet recently added native support for Geospatial. This post explains what that means and why it is important: parquet.apache.org/blog/2026/02...

Great inaugural post about the geospatial types on the Parquet blog.

Thank you Jia Yu, Dewey Dunnington , Kristin Cowalcijk, Feng Zhang.

More posts coming !

parquet.apache.org/blog/2026/02...

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...

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.

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

Testing the R-universe build workflow from your own GitHub repository We refactored the R-universe CI workflows to make it possible to run the exact same workflow from your own GitHub repository.

ropensci.org/blog/2026/01...

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

I taught a 70 person section of intro to computer science and the automated checks were a total godsend. (I also ran out of GitHub Actions minutes almost immediately...)

For the full scoop, check out our release post! sedona.apache.org/latest/blog/...

Finally...we're now on crates.io! We're still learning how to support Rust projects that are interested in spatial support...leave a note on our repo if you're interested!

We were fortunate to have over 40 functions contributed since our last release, but if we didn't get to your favourite you can now patch it in via pyarrow and/or shapely!

On the write side, SedonaDB can now write GeoParquet 1.1 files with spatial sorting and limited row group size to optimize partial reads when hosting or viewing large files.

Just like our GeoParquet suport, if your query contains one or more WHERE ST_Intersects() (or similar), this is automatically pushed into the data source to read as little as possible!

We're proud to officially be GDAL in a trenchcoat! You can now query GeoPackage, FlatGeoBuf, Shapefile, or anything else supported by GDAL/OGR, including URLs, zipped files, directories, and globs.

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.

YouTube video by Andrew Lamb Apache DataFusion Boston Meetup: September 12, 2025

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...

FOSS4G Auckland 2025 Kia ora! Last week, we were in Auckland, New Zealand, for FOSS4G 2025. We had a great time and gave...

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...

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...

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

QOD November 2025 QGIS is a free, open source, cross platform (lin/win/mac) geographical information system (GIS) - qgis/QGIS

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

I love this country

The Mud Lakes of Nova Scotia

#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...

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…

Save the date -- Wednesday July 22, 2026 for the first Apache DataFusion meetup in Denver: luma.com/jsu6faie

GeoArrow on Web; Can We Live Without GeoJSON? - Slidev

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-...

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!

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

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...

Apache Arrow 22.0.0 is now available for download: buff.ly/rFyGsDV

This release includes 213 resolved issues. #opensource

YouTube video by Posit PBC Make Big Geospatial Data Accessible with Arrow (Cari Gostic, Sonoma Technology) | posit::conf(2025)

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...

RE: https://fosstodon.org/@underdarkGIS/113300727609804149

Over 250 #geospatial #GISChat counts to follow: https://gist.github.com/anitagraser/a37118d74b839602e0f474375f548dfd

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...