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#gischat

33 posts31 participants4 posts today

Hey, #gischat, looks like the GADM wiki entry is full of some marketing fluff and really outdated references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

Fediverse recommendations: @FediFollows published a list of recommended geospatial #Fediverse / #Mastodon accounts. The list features, among others, geospatial conferences, news channels, blogs, software, organizations, government bodies, geospatial professionals,...
spatialists.ch/posts/2025/07/2 #GIS #GISchat #geospatial #SwissGIS

Spatialists – geospatial newsFediverse recommendations – Spatialists – geospatial news
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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)