Overture Maps
An open map-data project (Linux Foundation, backed by Amazon, Meta, Microsoft and TomTom) that merges OpenStreetMap, Google Open Buildings and Microsoft ML footprints into one deduplicated, freely usable dataset.
Using the merged layer instead of any single source is why Mathare's buildings appear on our map at all.
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Where it comes up
- WP32Legible, Navigable, Writable: What Measuring a City Actually Costs
- WP31Building Nairobi a Second Time: Notes From a Week of Shipping the Twin
- WP30Estimating What We Don't Know: A Confidence-Tiered Height Heuristic for Data-Sparse Cities
- WP29Who's Missing From the Map: Building-Footprint Coverage Gaps in Nairobi's Informal Settlements
Other concepts