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 https://github.com/qgis/QGIS/issues/62654)
I presented #Mapbender at the #FOSS4GE2025 conference in Mostar & demonstrated how you can create great geoportal applications with Mapbender & talked about the news.
I also introduced #QGIS2Mapbender - a #QGIS plugin that publishes your QGIS Project as QGIS Server WMS & also in a Mapbender application.
- Create great geoportal applications with Mapbender https://talks.osgeo.org/foss4g-europe-2025/talk/J3LN8J/
- QGIS2Mapbender https://talks.osgeo.org/foss4g-europe-2025/talk/8GDETM/
#FOSSGIS #FOSS4G #OSGeo #FOSS4GE2025
In today's #gleo news: wind data!
Or, more technically: a 2-band raster covering the globe and properly warped (EPSG:4326→EPSG:3857) containing UV speed data, visualised as a particle trail simulation.
Thanks to the #FOSS4GE2025 for providing the environment that has let me pull this off.
Check it yourself at https://ivansanchez.gitlab.io/gleo/repl.html#Wind%20raster%20particles
Thank you #FOSS4GEurope and beautiful #Mostar, it has been an incredible event! So many great talks, people met, coffees drunk, and stickers given away! Thanks again to everyone who helped organize the conference, gave a talk, or stopped by our stand to see us! #FOSS4G #foss4ge2025
@geographika giving us a lighting update of recent @mapserver developments #foss4ge2025
FOSS4GE 2025 group photo!
We hit pause for a moment today to capture the amazing crowd gathered here at #FOSS4GE2025! 
Glad so many of you made it into the shot! 
#FOSS4GE #FOSS4G #mostar #osgeo
And bringing us to the next level of georeferencing with DGSS thanks to @luis_de_sousa #foss4ge2025
@jjimenezshaw reminding the #foss4ge2025 audience that even if you may hate the Mercator projection it has nice to have and unique properties.
"#Mercator projection is not a conspiracy of northern countries. It is a conspiracy of the southern #penguins. Look at the size of #Antarctica. It is HUGE!"
~ Javier Jimenez Shaw, at #FOSS4GE2025
1/2 "Approaching Security with Kindness and Compassion" talk by Iván Sánchez Ortega and Jody Garnett.
Quite often boils down to saying "I'm sorry" (with several levels of severity/tone) after mistakes in communication, failed accommodation of different expectations of various parties involved, etc.
I brought some QGIS Tips stickers to FOSS4G Europe. If you want one, just ask me or you can find some in the Philosophy Faculty building. #FOSS4G #foss4ge #foss4ge2025 #foss4geurope
@ticheler now talking about #opensource software in turbulent times at #foss4ge2025. You can join us in the Livestream https://talks.osgeo.org/foss4g-europe-2025/talk/BQ3NPM/ #osgeo #foss4g #foss4ge
"All modern GIS infrastructure
...
PROJ
GDAL"
Another version of https://xkcd.com/2347/
I just decided that I shall talk for 5 minutes about «Gleo vector field particle trail simulator» in the impromptu #FOSS4GE2025 lightning talk track.
Yes, it's a mouthful.
This week I am at the FOSS4G-Europe conference in Mostar. After two successful days of workshops today the main programme starts. Join me tomorrow at 16h30 in room SA01 for my presentation on Discrete Global Grid Systems and the #GeoPlegma project. "The Shape Of GIS To Come", an ambitious title for an ambitious project (and homage to a great musician).
Interesting tidbit from presentation of Florian Franziskakis. While presentation was about transitioning from proprietary software to #OpenSource, the tidbit is about relations between old geological formations (palaeogeography) and recent presidential elections:
Enjoy @foss4geurope in Mostar or remote.
The program app can be found here:
https://play.google.com/store/apps/details?id=info.metadude.android.foss4g.schedule https://f-droid.org/packages/info.metadude.android.foss4g.schedule
#foss4ge2025 #foss4ge #foss4g #foss4geurope #mostar #fahrplan @osgeo
@jjimenezshaw It's not everyday that one can see the PROJ folks standing next to Mercator.
@EvenRouault @foss4geurope #FOSS4GE2025
The State of 
Slides: 
