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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)

We are happy to announce today another sponsor for #FOSS4GUK 2025 in Leeds. 🦉 🙏 🙏 🙏

Lutra Consulting is empowering your QGIS journey since 2009. They are long-time #QGIS adopters and core developers, having created dozens of plugins and core features. Contributions include 3D, point clouds, vector tiles, and mesh layers. 🌍 lutraconsulting.co.uk/

Their sponsorship is under the Mergin Maps product brand which allows you to take your QGIS projects into the field. 📱🗺️ merginmaps.com/

Ce n'est encore qu'un programme provisoire, mais déjà beaucoup de belles choses cet automne à l'Urfist de Lyon : du #zotero sous toutes les coutures, nos #obsidian, #mastodon, #scribus, #inkscape, #openstreetmap, #hal, #mindmapping et #gephi, mais aussi le retour de #Qgis, d'un cycle important sur #R et #datascience ou encore #voviewer, #argos, les données #insee et les entrepôts de données...
Retrouvez cela et plus encore sur : sygefor.reseau-urfist.fr/#/pro
A bientôt à l'URFIST !
#OpenScience #ist #urfist #data