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#qgis

14 posts14 participants0 posts today

For their new Safe Streets Plan to reach #VisionZero, @alexkgellis in Providence, RI used my "Walk Potential" metric to better understand pedestrian demand in their city so infrastructure investment can be prioritized where it's most effective.

I'm considering rewriting the Walk Potential software as a #QGIS plugin. Let me know if that would make it more accessible for you to try!

mark.stosberg.com/new-software

🎉 The road to QGIS 4 is open ! The #QGIS Roadmap for the next major version is now official ! blog.qgis.org/2025/04/17/qgis-

🚀 The migration to Qt6 is almost complete and will enable QGIS to improve significantly. The #CMYK mode will namely be fully available.

📆 As for releases, QGIS 3.40 LTR will be supported until may 2026. QGIS 4.2 will be the next official LTR in February 2026.

👩‍💻 Migration work will be required for plugins, we are working on tools and docs.

QGIS.org blog · 🎉 Big Changes Ahead: QGIS Is Moving to Qt6 and Launching QGIS 4.0!Exciting times are ahead for the QGIS project! We’re thrilled to share some major updates coming to the QGIS platform over the next few months. These changes are part of a long-planned technical mi…
#OpenSource#GIS#Qt
Replied to Jonatan Hildén

@jhilden Thanks!
I find another inconvenience: I had to provide the coordinates in the projected space. It would be much more convenient to allow lat-lon as input (and #QGIS converts internally, it knows how), because I already have that grid in the map.

The image below is a rectified photo of an old map. But it required a lot of extra work, converting the coordinates outside with PROJ.
(guessing the projection is left as an exercise for the reader ;)

Continued thread

Turns out that this particular example comes with a problem. GDAL cannot reproject the Wagner VII projection:

ERROR 1: PROJ: pipeline: Pipeline: A forward operation couldn't be constructed
ERROR 1: Too many points (441 out of 441) failed to transform, unable to compute output bounds.

Is there some workaround? If not, I guess I need to just convert the damn map to vectors …

Dear #QGIS

I'm setting up a new Linux laptop and am reconsidering the best way way to manage keeping a particular QGIS version in sync with a number of key plugins.

Last time I used conda and that worked OK.

The Arch Linux package manager struggled with the task and I did not get very far trying Nix as a package manager for these. Is there another choice I should be considering?

Just wanted to inform the world, that Freehand Raster Georeferencer plugin for #QGIS is a godsend for anyone working with old #maps. Now, if only the Almighty would send me a map of the region made between 1786 and 1893, preferably in '30s…

An attempti at a cartogram of world population distribution.

Generated cumulative population by lat and long separately, then normalized to lat/long in Web Mercator.

Done in #QGIS with spatialite/GPKG.

Note, individual grid cells don't have same population. But each column, and each row, should be equal population.

The center point should be the median center of population

Data from Kontur 22km hex cell centroids.

Nifty QGIS feature:
If you have a raster map image and you know the projection (in this case I recognized it as Wagner VII), you can just use the Georeferencer tool, put in a few points and assign the projection. Just use the setting ”linear” if you know that no warping is necessary.
#qgis #geospatial

Hola ! Quelqu'un connait de bonnes formations QGIS pour les bases ? 🗺️💻
(encadrées, si possible en présentiel, donc pas des tutos ou moocs)

Autrement, je réfléchis à proposer des formations en QGIS, en particulier orienté sur la gestion des données naturalistes 🦢🐦‍⬛🐍🦋🪲

GIS folks: is there a viable #QGIS plugin for freehand drawing features that will work in 3.x.x?

It looks like "BeePen" is only good for annotations, and "Freehand Editing" was last updated 12 years ago.

If not, would there be interest in one?

#GISChat @qgis

quick map I made about a year ago of Yellowknife showing property tax revenue density

keep on going back to this one as a way to show benefits of denser/central neighbourhoods

wish we had more openly available property tax data like this across Canada

#maps#gis#qgis