唱ICS01.100 A01 广州市地方标准DB4401 DB4401/T46—2020 代替DBJ440100/T7—2016 水务地理信息管理规范 Geographicinformationmanagementofwateraffair 2020-06-08发布 2020-07-01实施 广州市市场监督管理局发布 DB4401/T46—2020 Ⅰ目次 前言.......................................................................................................................................................................Ⅲ 1范围...................................................................................................................................................................1 2规范性引用文件...............................................................................................................................................1 3术语和定义.......................................................................................................................................................1 4一般规定...........................................................................................................................................................2 4.1图式...........................................................................................................................................................2 4.2符号...........................................................................................................................................................3 4.3坐标系.......................................................................................................................................................3 5图示符号...........................................................................................................................................................3 6水务空间数据交换格式.................................................................................................................................11 7水务基础电子地图产品模式.........................................................................................................................12 7.1分类.........................................................................................................................................................12 7.2产品名称.................................................................................................................................................12 7.3构成.........................................................................................................................................................13 8水务地理空间数据元数据标准.....................................................................................................................14 参考文献...............................................................................................................................................................15