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John X
@johnx
Spatiotemporal queries on content-addressed data systems like IPFS would be a big unlock for the decentralized geospatial — it'd enable time- and location-aware fetching of satellite imagery, vector data, time series data. EASIER Data Initiative published some research into querying spatial data on IPFS using geohashes a few months ago 🌐 https://easierdata.org/notebooks/geohash-ipfs-blog-post
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John X
@johnx
Something I've been wanting to build for a while: an adapter to a library like Leaflet or Mapbox GL JS that would wire up zxy tiling systems (both raster and vector tiles) to tiles stored on IPFS.
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John X
@johnx
I haven't looked too deeply into it, but I *think* it would be quite simple, just swapping out the `https://url.com/{z}/{x}/{y}.png` for the corresponding CID under the hood.
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John X
@johnx
One advantage here would be that you could point existing mapping libraries to a decentralized back end with no changes to the rest of the code. (Overall I believe that the path to adoption of decentralized geospatial tech means requiring minimal behavior change on the part of geospatial devs ...)
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John X
@johnx
So what? One very compelling use case that Andrew Hill from @tableland / Textile thought of: locally-stored mapping data for disaster resilience.
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John X
@johnx
The thinking: - High resolution (i.e. very zoomed in) map tiles are typically only loaded and used by people in the local area relevant to the tiles - Requiring people in remote areas to fetch data from data centers thousands of miles away creates a risk if their internet connection is severed by a natural disaster
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