> How do they figure out the building heights at all then? I don't know how this software does it, but people are tagging "number of floors" for buildings, and

> How do they figure out the building heights at all then? I don't know how this software does it, but people are tagging "number of floors" for buildings, and you can get a decent estimate of building heights from that (by presume X metres per floor). When standing on the street, you can easily figure out the number of floors.