QGIS-Tipp: Ungültige Geometrien finden und selektieren / QGIS tip: Find and select invalid geometries https://geoobserver.de/2025/04/17/qgis-tipp-ungueltige-geometrien-finden-und-selektieren/ #qgis #switch2qgis #gistribe #gischat #fossgis #foss4g #OSGeo #spatial #geospatial #opensource #gis #geo #geoObserver pls RT
Writing good tutorials: How do you convey complicated technical GIS and geospatial information to a potentially diverse audience clearly and helpfully? – Two blog posts, 10 years apart, offer some answers.
https://spatialists.ch/posts/2025/04-16-writing-good-tutorials/ #GIS #GISchat #geospatial #SwissGIS
Here's a fun React and Leaflet geospatial project to explore.
Learn how to make an interactive map of every video arcade in Japan.
#gis #mapping #leaflet #react
https://docs.stadiamaps.com/tutorials/getting-started-with-react-leaflet/?utm_campaign=tutorial_react_leaftlet&utm_source=mastodon&utm_medium=social
QGIS-Tipp: Erweiterte Liniensymbolisierung / Advanced line symbolisation https://geoobserver.de/2025/04/16/qgis-tipp-erweiterte-liniensymbolisierung/ via @franzpc #qgis #switch2qgis #DataViz #gistribe #gischat #fossgis #foss4g #OSGeo #spatial #geospatial #opensource #gis #geo #geoObserver pls RT
GEDTM30 – A Global 1-Arc-Second (~30m) Digital Terrain Model (DTM)
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https://github.com/openlandmap/GEDTM30 <-- shared GitHub repository
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#GIS #spatial #mapping #opendata #global #DTM #GEDTM30 #GitHub #30m #landsurface #parameters #documentation #hydrology #remotesensing #earthobservation #slope #geomorphons #hillshade #geomorphometry #geomorphology #topography #Equi7 #terrainheight #DigitalTerrainModel #landform
RiverREM - Generating River Relative Elevation Model (REM) Visualisations
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https://github.com/OpenTopography/RiverREM <-- shared GitHub repository
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https://opentopography.github.io/RiverREM/ <-- shared documentation
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https://opentopography.org/blog/new-package-automates-river-relative-elevation-model-rem-generation <-- shared Open Topography blog post about RiverREM
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H/T Heidi Luchsinger / Open Topography
[this post should not be considered as an endorsement of this product aka caveat emptor]
#GIS #spatial #mapping #remotesensing #earthobservation #Python #LiDAR #RiverREM #visualisation #hydrology #water #river #rivervalley #floodplain #terraces #GitHub #opensource #opendata #DEM #REM #model #modeling #RiverRelativeModel #documentation #tutorial #learning #tool #elevation #raster #sinuosity #drainage
{arcgislayers} v0.4.0 
on CRAN now!
The fastest way to access data from the Esri ecosystem—ArcGIS Online, Enterprise, or Survey123 in 
!
Thanks to @elipousson for tons of help with this.
https://github.com/R-ArcGIS/arcgislayers/releases/tag/v0.4.0
The best programmers: Many geospatial professions involve – varying degrees of – #programming. In a new article, Matthias Endler has collected fundamental #traits that the best #programmers he knows seem to share.
https://spatialists.ch/posts/2025/04-15-the-best-programmers/ #GIS #GISchat #geospatial #SwissGIS
LA Times: This massive map helps Altadena fire victims feel seen
https://www.latimes.com/lifestyle/story/2025-04-02/altadena-eaton-fire-map
Last week a developer was asking me about different qualities of map tiles for an app but I had had a couple of beers so they got some rambling about can Man really know and represent Truth.
QGIS-Tipp: Bedingte Formatierung in Attribut-Tabellen / Conditional formatting in attribute tables https://geoobserver.de/2025/04/15/qgis-tipp-bedingte-formatierung-in-attribut-tabellen/ #qgis #switch2qgis #gistribe #gischat #fossgis #foss4g #OSGeo #spatial #geospatial #opensource #gis #geo #geoObserver pls RT via @michelstuyts
#PostGIS Day 2024 Summary | Crunchy Data Blog #gis #spatial #postgresql https://www.crunchydata.com/blog/postgis-day-2024-summary
New geospatial data in Google BigQuery: #Google is adding geospatial content to its #DWH solution #BigQuery. Additions encompass annotated Street View #imagery, Places (#POI) data, and #traffic data, among others.
https://spatialists.ch/posts/2025/04-14-new-geospatial-data-in-google-bigquery/ #GIS #GISchat #geospatial #SwissGIS
Buchtipps: Kinder & Kartografie https://geoobserver.de/2025/04/14/buchtipps-kinder-kartografie/ #gistribe #gischat #fossgis #foss4g #OSGeo #spatial #geospatial #opensource #gis #geo #geoObserver pls RT @BDVI_Bbg @bdvi_verband @sfkeller
Hartsfield Jackson Atlanta International Airport - Atlanta, United States
https://en.wikipedia.org/wiki/Hartsfield–Jackson_Atlanta_International_Airport
https://www.openstreetmap.org/#map=13/33.636700/-84.428101
Tool tip: Mapshaper: #Mapshaper is a lightweight yet powerful geospatial toolkit offering #topology-aware #simplification (via Douglas-Peucker and Visvalingam algorithms), spatial operations, and more. Available across Windows, macOS, and Linux, it includes a...
https://spatialists.ch/posts/2025/04-12-tool-tip-mapshaper/ #GIS #GISchat #geospatial #SwissGIS
@karussell They don't explicitly say that they're incorporating Open Street Map data---instead saying that you can bring "your" data alongside Google's---but, as evidenced by your screenshot, and by Google's intro video here at the 41 second mark:
https://youtu.be/g9F-_tCakL8?t=41
It certainly seems like Google views Open Street Map data as fair game for inclusion within their "Geospatial Reasoning" product. Their promotional material shows a map rendering that bears a very strong resemblance to Open Street Map's default "Carto" raster tile rendering style, encouraging their potential customers to believe the same.
That is as clear a violation of the ODbL as can be, which was written in large part specifically to exclude Google from using OSM data in its own customer-facing products. Laundering license violations through AI doesn't make them not violations.
What can go wrong when Google advertises to mix OpenStreetMap (see screenshot) with their own data via "Geospatial Reasoning"?
Greg Cocks 
