comprehensive road network file; roads, streets, etc.
Vector
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The SRTM tiles are DEM data divided in to one degree blocks for the surface of the earth. The data is divided into two resolutions, one at 3 arc seconds (90m) and one at 30 arc seconds (900m). 80% of the earths surface is covered for all of the area… Read more.
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From the early 2000s when the China Expressway Atlas (CEA) began to distinguish National Main Routes from Provincial Expressways, and thereafter when 'Superior' Highways began appearing, they being better than ordinary highways, but perhaps not… Read more.
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comprehensive road network file; roads, streets, etc.
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The VMap Level 0 database provides worldwide coverage of vector-based geospatial data which can be viewed at 1:1,000,000 scale. It consists of geographic, attribute, and textual data. The complete database is organized into 10 thematic layers. The… Read more.
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Files available on the Scholars Portal Geospatial Portal http://geo1.scholarsportal.info/ Correspondence Files between 2006 and 2011 are also listed