Built 086

GIS-structured database with polygonal representation of the building extracted from CTRN 5000 with associated building height and volume information. IGM 50000 cut.本数据集为地理信息系统（Geographic Information System，GIS）结构化数据库，包含从CTRN 5000中提取的建筑物多边形表示数据，附带关联的建筑高度与体积信息，且经IGM 50000裁剪处理。