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#gischat

13 posts13 participants0 posts today

Smarter EO: Dynamic targeting: #NASA’s #JPL demonstrates autonomous #EarthObservation satellite operation: a #cubesat using “dynamic targeting” to decide, on its own, where to collect the most useful #EO data in real-time. This innovation could make future satellites smarter and...
spatialists.ch/posts/2025/07/2 #GIS #GISchat #geospatial #SwissGIS

Spatialists – geospatial newsSmarter EO: Dynamic targeting – Spatialists – geospatial news
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Hey, #gischat, looks like the GADM wiki entry is full of some marketing fluff and really outdated references

"Although it is a public database, GADM has a higher spatial resolution than other free databases,"

This is demonstrably false, the GADM outlines are very generalized, and, well, bad.

anyone want to fix things up a bit?

en.m.wikipedia.org/wiki/GADM

A manifesto for the growth of geospatial: A group of industry leaders at the 2025 #NORTH51 conference is charting a new course for the geospatial sector with their “#GEOFESTO” — a #manifesto outlining five key principles to drive #innovation and #impact in a rapidly changing world.
spatialists.ch/posts/2025/07/2 #GIS #GISchat #geospatial #SwissGIS

Spatialists – geospatial newsA manifesto for the growth of geospatial – Spatialists – geospatial news
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In #foss4ge2025 I was talking about Mercator projection, and what is the difference with "Web-Mercator"

These images (at different zoom levels) show a loxodromic curve (at 45° N) in Web-Mercator (EPSG:3857) - that is a straight line in Mercator (EPSG:3395). In red the loxodromic or rhumline. In blue a straight line connecting the endpoints.

(To reproduce it in #QGIS, deselect "Clip features to canvas extent" for the affected layers as discussed in github.com/qgis/QGIS/issues/62)

🗺️ USA Land Cover Map – 2024 🇺🇸
Made with QGIS & Blender using:
🌱 ESRI Land Cover (EarthMap)
🏔️ DEM from DivaGIS (CGIAR SRTM)
Forests, croplands, wetlands & cities — mapped to show the patterns shaping America's surface.

#USA#LandCover#QGIS

Vector tiles for openstreetmap.org: Yesterday, the #OpenStreetMap Foundation (#OSMF) launched #vectortiles on #OSM, delivering a sharper and faster map powered by a new backend. Developers may use the OSMF-hosted tiles under the Vector Tile Usage Policy and apply their own map styles.
spatialists.ch/posts/2025/07/2 #GIS #GISchat #geospatial #SwissGIS

Spatialists – geospatial newsVector tiles for openstreetmap.org – Spatialists – geospatial news
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Help from the #rstats folks. I have a landuse raster and a state raster. I want to tabulate the area of each landuse in each state. I've been reading {terra} docs but I can't figure out which function to use (`zonal` or `crostab`, `freq`).

I believe I've done this before but I can´t remember how. Any tips?