大比例尺地形图要素分类编码研究与应用

Research and Application of Large-scale Topographic Map Classification and Coding

大比例尺地形图要素分类编码编制是大比例尺地形图数据库建库的前提,更是数字城市地理空间框架建设的重点之一。在《基础地理信息要素数据字典第1部分:1∶500、1∶1000、1∶2000基础地理信息要素数据字典》GB/T 20258.1 2007国标的基础上,结合行业应用实际需要,提出一个面向地理实体的大比例尺地形图要素分类编码方案,方案中体现了实体要素和辅助要素的区分,既满足了目前大比例尺地形图生产的实际需要,又为未来数字城市地理空间框架建设中地理实体数据生产提供了接口。

Features of classification and coding of large-scale topographic maps are large-scale topographic maps of Building the Database premise, but also one of the priorities of the digi- tal city geospatial framework construction. On the basis of the national standard named Data dictionary for fundamental geo- graphic information features-Part 1 ： Data dictionary for funda- mental gepgraphic information features of 1：500 1：1000 1： 2000 scale, combined with the actual needs of industry appli- cations, we have proposed a large-scale topographic maps clas- sification and coding proposal which oriented to geographical entities, it not only reflects the physical elements and auxiliary elements distinguish, both to meet the actual needs of large-scale topographic map production.what＇ s the more, it provides an interface for future geographical entity data produc- tion of digital city geo-spatial framework construction.