In today's #gleo news: symbolizer function for spider's legs.

It's a niche feature, but this allows for custom instantiation of the legs of a `Spider` symbol. In the REPL example, each leg uses the colour of the corresponding text label.

Another use is using a decorated `Callout` subclass, and using other properties of symbols for their legs.

#webgl #gischat #dataviz

In today's #gleo news: the `dotFramify` decorator.

It's another tool for debugging #webgl, in those instances where a particular browser+GPU combination misbehaves, and you need to see the vertices in a kind of "dot frame" in addition to the "wireframe".

#gischat

Gleo invites; Soria and Gregory Pearce @ Ikii - 28 Feb feat. Gregory Pearce, Gleo

#SESH #GregoryPearce #Gleo

https://sesh.sx/e/1807283

Tanz Mein Herz, Feu Fou, Gleo @ 90mil - 17 Feb feat. Gleo

#SESH #Gleo

https://sesh.sx/e/1713958

Gleo presents; Able Noise & Milkweed @ 90mil - 04 Nov feat. Able Noise, Gleo

#SESH #AbleNoise #Gleo

https://sesh.sx/e/1459970

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

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