This standard specifies the classification and codes of topographic elements of 1:5000, 1:10000, 1:25000, 1:50000, 1:100000 digital topographic maps. : 25000, 1: 50000, 1: 100000 digital topographic map surveying and mapping of topographic elements, this standard is applicable to 1: 5000, 1: 10000, 1 collection, storage, retrieval, output and exchange. When establishing topographic map databases, various departments can appropriately expand and supplement according to the classification system and coding method stipulated in this standard according to the needs of the profession and regional characteristics. Annotation is coded by the user.
GB/T 15660-1995 history
2022GB/T 13923-2022 Classification and codes for fundamental geographic information feature
2006GB/T 13923-2006 Specifications for feature classification and codes of fundamental geographic information
1995GB/T 15660-1995 Classification and codes for the features of 1:5000 1:10000 1:25000 1:50000 1:100000 topographic maps
GB/T 15660-1995 Classification and codes for the features of 1:5000 1:10000 1:25000 1:50000 1:100000 topographic maps was changed to GB/T 13923-2006 Specifications for feature classification and codes of fundamental geographic information.