DCW China Set consists of six layers: roads, railroads, drainage system, populated places, urbanized areas, and contours. There are two sub-sets of layers: DCW_CHN covers China (including Taiwan) only; DCW_PLUS covers a much larger area (latitude between 10 degrees north and 60 degrees north; longitude from 70 degrees east to 140 degrees east). In terms of their contents, the two sub-sets differ only in the urbanized areas layer. With DCW_CHN, the urbanized areas layer has attribute TYPE while in DCW_PLUS there is no such attribute. In addition, a few very small urbanized areas were deleted from DCW_PLUS.
|Last modified on 12 May, 1997||Return to CITAS Homepage|