Published at LXer:
The OpenStreetMap (OSM) project is well on its way to producing a free, user-editable street-level vector map of the world. OpenAerialMap (OAM) is similar in scope, committed to building a free, bird's-eye photographic map of the world. But it faces a unique set of challenges. The project's browseable world map uses a JavaScript-powered zoomable interface similar to OSM's, and can even render OSM data as a layer on top of its own photographic tiles.
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