2022年南京市建筑物下垫面数据

本数据集包含了南京市共享地图资源建筑物下垫面分布，包括接近10万个矢量面。其中每座建筑物拥有其对应的楼层高度，及对应的网格编码。本套数据对这些矢量面进行了采集、编码、入库，形成了南京市建筑物下垫面时空大数据基础库；同时也实现了该区域资源建筑物标识的统一，使建筑物资源信息与时空网格自动关联。

This dataset encompasses the building underlying surface distribution of shared map resources in Nanjing, comprising nearly 100,000 vector polygons. Each individual building is equipped with its corresponding floor height and grid code. By collecting, encoding and ingesting these vector polygons into the database, this dataset has established the foundational spatio-temporal big data repository for building underlying surfaces in Nanjing. Additionally, it has unified the identifiers of building resources in this region, enabling the automatic correlation between building resource information and spatio-temporal grids.