Show HN: How many libraries are a walk away?

Category: other

Tags: geospatial, walkability, libraries, open-data, isochrones

Score: 6.3/10 (Innovation: 7, Technical: 6, Documentation: 5, Utility: 6)

Leafle is a web tool that maps walking access to public libraries, showing how many libraries are within a 5, 10, or 30-minute walk using real street routes rather than straight-line distances. It combines OpenStreetMap data, official library registers, and Mapbox isochrones with H3 hexagons to compute walking isochrones and per-person access using the two-step floating catchment area method. The project is interesting for its rigorous geospatial methodology and public data integration, though it remains a niche visualization.

Target audience: urban planners, data journalists, public policy researchers, and local government officials

Repository: https://leafle.org/on-foot

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