Fascinating new article on Semantic segmentation of historical maps using Self-Constructing Graph Convolutional Networks! Lukas Arzoumanidis, Julius Knechtel, Jan-Henrik Haunert & Youness Dehbi from HafenCity Universität Hamburg (HCU) University Hamburg https://doi.org/10.1080/15230406.2025.2468304 #GISchat #OpenAccess Code for reproduction at https://github.com/hcu-cml/SCGCN-histMap-segmentation
New article! Lucinda Roberts and colleagues model global historic sailing routes using a least-cost surface analysis, #GISchat https://doi.org/10.1080/15230406.2024.2445262
GIS-Wissen: Resampling / GIS knowledge: Resampling https://geoobserver.de/2025/04/03/gis-wissen-resampling/ #resampling #gistribe #gischat #fossgis #foss4g #OSGeo #spatial #geospatial #gis #geo #geoObserver pls RT
Last week, we hosted "Advances in Spatial Machine Learning 2025", a two-day workshop tackling open challenges in the field.
From validation to uncertainty analysis, we explored key topics with top researchers.
Now, we're working on synthesizing outcomes—stay tuned!
And finally: `aws s3 cp --endpoint-url https://opentopography.s3.sdsc.edu --no-sign-request s3://raster/COP30/COP30_hh/Copernicus_DSM_10_N00_00_E006_00_DEM.tif .` The basename has changed, Used to be:
`Copernicus_DSM_COG_10_{lat}_00_{lon}_00_DEM` vs now
`Copernicus_DSM_10_{lat}_00_{lon}_00_DEM`.
Subtle differences that make you pull you hairs, as always.
I think I already asked something similar a few weeks back, but isn't there a public site where I can fetch #Copernicus GLO-30 #DEM files with a simple http client anymore? I used to use `wget` for this, then it was AWS CLI, and now it seems I have to set it up with a user/pass/key/secret_key?
I remember cloning the whole mapzen repo when it was on peril of disappearing, should I have done the same with data that's supposed to be public? Has anyone done that already?
So, who knows what's up in State College PA? I'll be visiting soon to speak at a #GIS conference, and would kinda like to see more than the conference center!
.
#Ascot #SlowFashion #Menswear #TernHSD #CargoBike #GISChat
@AtanasE no mention of The Shapefile in this article is criminal https://en.m.wikipedia.org/wiki/Sidecar_file #GISChat
Open SAR data: Synthetic Aperture Radar (#SAR) is an interesting #remotesensing technology that captures high-resolution data of the Earth’s surface, regardless of weather or lighting conditions. This curated collection of open SAR data sources provides an...
https://spatialists.ch/posts/2025/04-01-open-sar-data/ #GIS #GISchat #geospatial #SwissGIS
#GISCHAT TIL https://github.com/locationtech/geotrellis
"GeoTrellis is a Scala library and framework that provides APIs for reading, writing and operating on geospatial raster and vector data. GeoTrellis also provides helpers for these same operations in Spark and for performing MapAlgebra operations on rasters. "
Done mapping all 40 #barangays of Luna, La Union, #Philippines 
in #OpenStreetMap, creating their #Wikidata items, and linking the two with each other.
A huge thanks to JR Dizon of the Luna Municipal Planning and Development Office for the boundary data. 
Wanna play around? Here is the Overpass Turbo query: https://overpass-turbo.eu/s/21s0
And here is the Wikidata Query Service (WDQS) query: https://w.wiki/DfYz
Previously: https://en.osm.town/@seav/114092122864097831
In 1 week, @esri webinar: Enhance Your #Business Decisions with #ArcGIS for #Microsoft https://tinyurl.com/4ff7crha
#location #spatial #intelligence #geospatial #GIS #esri #mapping #GISchat #ArcGISApps #mapstodon @esrifederalgovt @esrislgov @esritraining @arcgisapps @urisa @msftnews
#Slack it to Me: Setting Up #ArcGISMonitor Webhooks for Instant Alerts https://tinyurl.com/3pw3xmzt by #CloudpointGeospatial
#ArcGISEnterprise #ArcGISAdmin #GIO #IT #systemhealth #observability #GIS #esri #arcgis #GISchat #geospatial #mapstodon @esri @esrifederalgovt @esrislgov @arcgisxprise @esritraining @urisa
Starting tomorrow, only two spaces left! Want to learn how to visualise and analyze spatial data in the social sciences? My course Introduction to QGIS: Spatial Data and Spatial Analysis course starts tomorrow, with NCRM https://www.ncrm.ac.uk/training/show.php?article=13700 #GISchat
hey there's #FOSS4G2025 news!
Call for papers is open: https://2025.foss4g.org/attend/call-for-papers
Travel grant program is open:
https://2025.foss4g.org/attend/travel-grant-program
You can register to attend:
https://2025.foss4g.org/attend/register
Voting on a logo is open! Proposals and voting link here: https://wiki.osgeo.org/wiki/FOSS4G_2025/Logo_Entries)
Go propose talks/register/apply for travel grants/vote for a logo!
Swing by Australia on the way and come climbing ;)
(ping @osgeo and followers)
FOSSGIS 2025: (M)eine Nachlese / My review https://geoobserver.de/2025/03/31/fossgis-2025-meine-nachlese/ #fossgis #fossgis2025 #gistribe #gischat #OSGeo #spatial #geospatial #opensource #opendata #osm #openstreetmap #gis #geo #geoObserver pls RT
