you could use my website http://compare.osm-tools.org/ Nicely done site. I just took a look at my area, most of the red pixels are due to simple differences in classification. In other words, OSM does have the street, but classifies it differently than Google.
On Tue, Sep 2, 2014 at 7:07 AM, Stephan Knauss <[email protected]> wrote: > Eleanor Stokes writes: > > Does anyone happen to know of completeness analyses >> across cities in different regions that have been performed? >> I'm particularly interested in the completeness of the >> road datasets in OSM. >> > > there was a talk at SotM-EU 2011: > http://2011.sotm-eu.org/[email protected] > Fraunhofer IAIS did some comparison. > > If you don't have access to a reference data set it might be difficult to > come up with a number. > > If a rough estimation might be OK, you could use my website > http://compare.osm-tools.org/ and count red pixel from a screenshot. > Divide that by the average street-width in pixel on that scale and then you > have the length of the road network (in pixel@scale) which is not in OSM > dataset but in Google. > > Background information: > http://www.osm-tools.org/compare.html > > Stephan > > > _______________________________________________ > talk mailing list > [email protected] > https://lists.openstreetmap.org/listinfo/talk >
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