On 4/5/2011 4:58 AM, Andy Allan wrote:
I nearly fell off my chair laughing when you implied that TIGER and NHD were good datasets.
Actually they are good reference datasets. NHD is better than anyone could obtain by mapping without access to private property. TIGER quality varies from location to location - much of it is based on municipal data which is much more accurate than can be obtained with a GPS unit walking under trees; the trees obscure the street from accurate aerial mapping. And some TIGER is scribbling - much like contributions of a new OpenStreetMap user that hasn't learned the tools or techniques yet.
Sometimes I wonder if one of the problems OSM is facing in the US is the relative paucity of examples where OSM volunteers have mapped to higher standards
Are you claiming that nearly everything people have surveyed in the US is crap?
- instead you have endless
amounts of poor, basic TIGER data with broken buildings
TIGER didn't include buildings - are you making fun of buildings traced from aerials? (Which, due to parallax and tracing the roof instead of the base, often have as many errors as TIGER roads)
The biggest issue in the US is that people's reaction is that we already have "Free Google, Bing, Yahoo and Mapquest" maps. Why is there even another map?
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