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Dewey Dunnington

@paleolimbot.bsky.social
263 followers 97 following 96 posts

Scaling spatial computing at Wherobots, Inc. ApacheArrow PMC, #gischat, #rstats, ex Voltron Data.

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Reposted by Dewey Dunnington
Josiah @josiah.rs · 24/09/2026
I cannot emphasize enough how excited I am about {geoarrowwidget} and {deckglgeoarrow}. 3.2 **million** points in 4 seconds. #rspatial #rstats
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Dewey Dunnington @paleolimbot.bsky.social · 22/09/2026
Excited to be teaching again! Sign up for the Monday SedonaDB workshop to mostly learn about how query engines/databases can make large(r) data in Python less awkward!
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Kyle Barron @kylebarron.dev · 22/09/2026
Published deck.gl-raster v0.8! - Initial globe view support - New icechunk example - Improved request latency for MosaicLayer - Fixed reprojection for images extending beyond ±85° latitude - Improved rendering precision at high zooms - Improved performance developmentseed.org/deck.gl-rast...
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Josiah @josiah.rs · 12/09/2026
It looks like {geoarrowrs} is even competitive with {sedonadb}?! Do we got a new fast spatial contender! #rstats josiahparry.github.io/geoarrowrs/a...
Graph of bench marks for geoarrow-rs vs duckspatial and sedonda-db
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Yutani @yutannihilation-en.bsky.social · 01/09/2026
Today, I talked about 🐘🪿⛰️, or more precisely, about PostGIS, DuckDB and Apache SedonaDB at FOSS4G Hiroshima 2026. Here's my slides. Guess which one I chose to recommend after this roulette?? 🎰 SedonaDB: Why Yet Another Geospatial Database Engine? github.com/yutannihilat...
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Dewey Dunnington @paleolimbot.bsky.social · 25/06/2026
We're excited to announce a new release of SedonaDB, and this one is a big one! Between native DataFrame APIs in Python and R, a brand new Geography implementation, GPU accelerated joins, and a raster/ND-array foundation, it's hard to know where to start.
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Thomas Lin Pedersen @thomasp85.com · 23/06/2026
Do you love maps? Of course you do! With the latest release of #ggsql we now support spatial plotting directly from your database. As a cherry on top, the release also provides powerful in-layer aggregation. Read all about it on the blog
opensource.posit.co
ggsql 0.4.1: Spatial plotting and in-layer aggregation
ggsql 0.4.1 adds support for spatial plotting and data aggregation within layers. Read all about the new features in this release post.
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Hadley Wickham @hadley.nz · 17/06/2026
dbplyr 2.6.0 is here! This release leaned on Claude Code to clear a TON of smaller issues, freeing up time for the big stuff: brand-new ADBC and JDBC backends, new translations, and a new sql_dialect() to cleanly decouple connection from SQL dialect. Read more: opensource.posit.co/blog/2026-06...
opensource.posit.co
dbplyr 2.6.0
dbplyr 2.6.0 is now on CRAN, with new ADBC and JDBC backends, IBM DB2 support, more translations, and a bunch of minor fixes and improvements.
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Mara Averick @dataandme.bsky.social · 08/06/2026
I'm alive *AND* I wrote a blog post?! Unheard of! Much 💖 to @abbycabs.dev, and @grafana.bsky.social's David Allen and Amanda Wagner whose FOSDEM talk's were a huge source of inspo!
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Columnar @columnar.tech · 02/06/2026
📣 Introducing databow: one command-line tool to query them all, built with Rust and ADBC. Query any SQL source that has an ADBC driver (30+ and counting) right from your terminal with one simple CLI. To install 👉 uv tool install databow More details at columnar.tech/blog/databow-cli
columnar.tech
Introducing databow
One command-line tool to query them all, built with Rust and ADBC
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Jakub Nowosad @nowosad.fosstodon.org.ap.brid.gy · 29/05/2026
⏰️ Reminder: submission deadline for the Spatial Data Science Award is soon (May 31). If you’re planning to nominate people contributing to geospatial open science, OSS development, and community building, now is the time to submit […] [Original post on fosstodon.org]
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Jakub Nowosad @nowosad.fosstodon.org.ap.brid.gy · 29/04/2026
Looking for geospatial conferences in 2026? Here’s a growing community-maintained list: github.com/Nowosad/conferences_2026 🗺️ Add missing events via PR. #gischat #GIS #geocomputation
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Lawrence Vulis @lvulis.bsky.social · 24/04/2026
Modern geospatial SQL means you can skip the parallelization etc that we try to do to actually get these types of runs to complete.
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Dewey Dunnington @paleolimbot.bsky.social · 24/04/2026
In 2024 I spent days trying to optimize a point-in-polygon join with ~130 million points against all U.S. zipcodes and the best I could come up with was a few minutes. In 2026, both SedonaDB and @duckdb.org spatial can both do it in seconds 🤯. More in the post! dewey.dunnington.ca/post/2026/wr...
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Posit @posit.co · 08/04/2026
We are thrilled to announce that Positron Server is now available for academic use via JupyterHub! This gives students a robust #RStats & #Python data science IDE without needing a local install or new infrastructure. Learn more: positron.posit.co/blog/posts/2...
Positron plus JupyterHub logo, with the Posit logo in the corner.
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Columnar @columnar.tech · 01/04/2026
We heard you: ADBC is great, but you need it on mainframes. Introducing ADBC for COBOL. The same connectors that work with Python, Rust, and Go now work with a language originally designed for punch cards. columnar.tech/blog/adbc-co...
columnar.tech
We built an ADBC interface for COBOL
Modern database connectivity meets 1959. It fits better than it should.
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Dewey Dunnington @paleolimbot.bsky.social · 01/04/2026
Can your current spatial SQL engine ST_💩()? We didn't think so! As part of our ongoing attempt to innovate on spatial SQL in Apache Sedona, this we're proposing emoji shorthands for most functions which (1) improve expressiveness and (2) helps more SQL fit on one line.
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Max kuhn @topepo.bsky.social · 21/03/2026
Our list of 2026 #rstats and #python summer internships has been posted. We can't wait to work with you and make great things! tidyverse.org/blog/2026/03...
tidyverse.org
2026 Posit Internships
Posit is sponsoring four summer internship positions in 2026.
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Hadley Wickham @hadley.nz · 20/03/2026
We have summer internships y'all! Come work at Posit on the PyData, tidymodels, shiny, or Connect teams: grnh.se/tigz810a3us. You will have an awesome time, learn a ton, and help advance our open source and pro tools 🧰 #rstats #pydata
Kermit the frog screaming with excitement
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Kyle Walker @kylewalker.bsky.social · 18/03/2026
I tend to be a CRAN-appreciator. But wow, R-Universe is such a useful project. As a developer, I can: - Experiment with new and creative approaches that would never get accepted on CRAN; - Have cross-platform binaries for my packages built within an hour (usually) of a GitHub push
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Columnar @columnar.tech · 15/03/2026
The fastest operation is the one you don’t have to do. When a database natively supports @arrow.apache.org, ADBC can speed up fetching and ingestion by eliminating costly row/column conversions. How much faster is it in practice? We ran some benchmarks to find out. Link below 👇
An abstract hyperspace warp image inspired by the comedic "going plaid" effect from the 1980s cult film "Spaceballs".
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Bryce @brycemecum.com · 12/03/2026
Arctos Alliance (arctosalliance.org) is now officially launched! "If your organization depends on Arrow or Parquet or you’re interested in helping sustain these critical data technologies, we would welcome a conversation about how to get involved."
arctosalliance.org
Arctos Alliance - Open Collective
Support the committers powering the world’s open data infrastructure.
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Dewey Dunnington @paleolimbot.bsky.social · 11/03/2026
We're chuffed to announce Apache SedonaDB 0.3.0! This release features a rewritten join that supports larger-than-memory spatial/KNN joins courtesy of Kristin Cowalcijk, new functions, parameterized SQL queries, GDAL/pyogrio reads, GDAL/sf based reads in R, and the beginnings of an R DataFrame API!
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Andrew Lamb @andrewlamb1111.bsky.social · 13/02/2026
📖 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...
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Julien Le Dem @julien.ledem.net · 14/02/2026
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...
parquet.apache.org
Native Geospatial Types in Apache Parquet
Native Geospatial Types in Apache Parquet
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Apache Arrow @arrow.apache.org · 11/01/2026
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...
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Jakub Nowosad @jakubnowosad.com · 04/01/2026
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
github.com
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.
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Jeroen Ooms @jeroenooms.bsky.social · 03/01/2026
ropensci.org/blog/2026/01...
ropensci.org
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.
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Apache Software Foundation (The ASF) @apache.org · 23/12/2025
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
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Dewey Dunnington @paleolimbot.bsky.social · 09/12/2025
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.
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Andrew Lamb @andrewlamb1111.bsky.social · 04/12/2025
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...
youtu.be
Apache DataFusion Boston Meetup: September 12, 2025
YouTube video by Andrew Lamb
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Yutani @yutannihilation-en.bsky.social · 30/11/2025
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
FOSS4G Auckland 2025
Kia ora! Last week, we were in Auckland, New Zealand, for FOSS4G 2025. We had a great time and gave...
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Anita Graser 🇪🇺🇺🇦🇬🇪 @underdarkgis.fosstodon.org.ap.brid.gy · 28/11/2025
Wohoo, QGIS Arrow support has been merged: github.com/qgis/QGIS/pull/63749 Thanks @paleolimbot & @nyalld et al. Looking forward to testing it out soon 🤩 #QGIS #Arrow #GISChat
github.com
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...
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Anita Graser 🇪🇺🇺🇦🇬🇪 @underdarkgis.fosstodon.org.ap.brid.gy · 28/11/2025
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: github.com/qgis/QGIS/wiki/QOD-Novem… #QGIS #GISChat
github.com
QOD November 2025
QGIS is a free, open source, cross platform (lin/win/mac) geographical information system (GIS) - qgis/QGIS
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Dewey Dunnington @paleolimbot.bsky.social · 26/11/2025
I love this country
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Dewey Dunnington @paleolimbot.bsky.social · 24/11/2025
#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...
The Mud Lakes of Nova Scotia
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Andrew Lamb @andrewlamb1111.bsky.social · 23/11/2025
Save the date -- Wednesday July 22, 2026 for the first Apache DataFusion meetup in Denver: luma.com/jsu6faie
luma.com
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…
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Yutani @yutannihilation-en.bsky.social · 21/11/2025
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-...
yutannihilation.github.io
GeoArrow on Web; Can We Live Without GeoJSON? - Slidev
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Dewey Dunnington @paleolimbot.bsky.social · 13/11/2025
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!
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Andrew Lamb @andrewlamb1111.bsky.social · 11/11/2025
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...
bauplanlabs.com
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
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Apache Software Foundation (The ASF) @apache.org · 09/11/2025
Apache Arrow 22.0.0 is now available for download: buff.ly/rFyGsDV This release includes 213 resolved issues. #opensource
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Bryce @brycemecum.com · 07/11/2025
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...
youtube.com
Make Big Geospatial Data Accessible with Arrow (Cari Gostic, Sonoma Technology) | posit::conf(2025)
YouTube video by Posit PBC
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Anita Graser 🇪🇺🇺🇦🇬🇪 @underdarkgis.fosstodon.org.ap.brid.gy · 07/11/2025
RE: fosstodon.org/@underdarkGIS/1133007… Over 250 #geospatial #GISChat counts to follow: gist.github.com/anitagraser/a37118d…
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Dewey Dunnington @paleolimbot.bsky.social · 07/11/2025
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...
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Dewey Dunnington @paleolimbot.bsky.social · 06/11/2025
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...
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Dewey Dunnington @paleolimbot.bsky.social · 04/11/2025
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!
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Dewey Dunnington @paleolimbot.bsky.social · 03/11/2025
#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!
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Dewey Dunnington @paleolimbot.bsky.social · 02/11/2025
#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...
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Dewey Dunnington @paleolimbot.bsky.social · 01/11/2025
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...
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