North American Overlay Mapping
Layer Notes - Minor City
The 'Minor City' foreground overlay shows two types of point feature, each being differentiated by the color of the point and name. The bolder color indicates towns and cities with a population of between 10,000 and 50,000. The weaker color indicates towns and cities with a population of less than 10,000.
Choice of cities. The design-brief for NAOMI was to give a good idea of population centres, whilst trying to avoid clutter and over-crowding of the maps. Therefore, certain towns and cities have been ommited if very close to larger ones in crowded areas.
The data for this overlay came from a variety of sources; the major one being VMAP0 data. For more information about VMAP0, visit the www.mapability.com website.