In today's #gleo news: async API change & arrugation improvements.

Adding symbols is now asynchronous (i.e. the `.addTo()` and `.add()` calls now return promises). Good for waiting for symbols, not so good for method chaining 🫤

The fun part is new unit tests for conformal and arrugated rasters, improved arrugator epsilon stall detection (read: less artifacts), and new REPL for azimuthal projection, see https://ivansanchez.gitlab.io/gleo/repl.html#Azimuthal%20(without%20PROJ)%20%2B%20ArrugatedRaster

#webgl #gischat #dataviz

Reflexión sobre esas cosas que la gente llama IAs*:

Son el comodín del público del 50x15.

Te van a dar una respuesta, y te van a dar lo más estadísticamente probable, y nunca te van a decir "no sé". Que para cosas sencillas puede estar bien, pero para cosas complicadas no te deberías fiar un pelo.

(Y a veces ni por esas)

* Agentes conversacionales basados en LLMs**
** Modelos grandes de lenguaje

Do I know any Serbian OpenStreetMappers? It seems that the folks at the Belgrade airport forgot to put the OSM attribution before printing the info posters. Somebody should tell them.

(Update: @kokan will handle the issue locally)

(Compare with OSM mapnik tiles at Z=13, https://www.openstreetmap.org/?#map=13/44.78431/20.44041 )

#OpenStreetMap #Copyright #license #ODbL

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

#webgl #gischat #dataviz

In today's #gleo news: Different per-point colour on Stroke symbols.

And, since Gleo can take a symbol and replace RGBA colour into heatmap intensity, it's easy to make a visualization of a magnitude (e.g. vehicle speed) over a trajectory.

You can try this out at https://ivansanchez.gitlab.io/gleo/repl.html#HeatMap%20%2B%20intensified%20Stroke ; note how the heatmap intensity is summed at the places when the line overlaps itself.

#webgl #gischat #dataviz

In today's #gleo news: the new `minzoomify` symbol decorator!

Symbols can now disappear when zooming out (or in) past a given scale factor. This is very much like @leaflet 's `minZoom`/`maxZoom`.

You can try this out at https://ivansanchez.gitlab.io/gleo/repl.html#minzoomify%20(Sprite)

#webgl #gischat #dataviz