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Great visualization and approach with compressing the tile data. Do you have a comparison of how much smaller the payload ends up being compared to simply sending PNG files?
I use PNGs to encode elevation data in my 3D mapping library (https://github.com/felixpalmer/procedural-gl-js/) and this does a pretty good job of compressing the data, for example in the ocean the PNG files are also very small as the image is mostly black. Different use case I now as your data is much more sparse, but I wonder how close the PNG compression would be compared to your approach.
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Well this "extension" is closed source, but at the core we use deck.gl [0]. deck.gl is under open governance [1] inside the Linux Foundation/Urban Computing Foundation, so no contributor can take the project closed source.
[0]: https://deck.gl/
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No, this is a common misconception about deck.gl. deck.gl is completely independent from other frameworks, however deck.gl is more geared towards data visualization, so it's commonly paired with other frameworks that focus on a vector basemap.
There are examples [0] of pairing deck.gl with either Mapbox GL JS or Google Maps. It's also easy to use deck.gl with the open source Mapbox GL JS port [1]. Also if you're ok with a bitmap basemap, you can just render OSM tiles with deck.gl directly [2].
(Also I guess good to disclaim that I'm a maintainer of deck.gl )
[0]: https://deck.gl/docs/get-started/using-with-map
