OpenStreetMap GPS trace density in and near Europe
Cropped from a global plot of the logarithm of point density in the April, 2012 planet.gpx release (wiki.openstreetmap.org/wiki/Planet.gpx)
Cropped from a global plot of the logarithm of point density in the April, 2012 planet.gpx release (wiki.openstreetmap.org/wiki/Planet.gpx)