Spot around the building of the BDTopo — IGN, 2016 edition — Normandy

Urban spot built from the layers “Bâti” (BATI_INDIFFERENCIE, BATI_REMARQUABLE and BATI_INDUSTRIEL) of the BDTopo de l’IGN in its 2016 edition (ED161). The process consisted of creating a buffer of 50 m around each building and then eroding the result 40 m. The spot obtained does not correspond to the precise condition of the structure at a given date throughout the region.本数据集的城市斑块源自法国国家地理研究院（Institut Géographique National，IGN）2016版（ED161）BDTopo数据库的建筑（Bâti）图层，该图层包含普通建筑（BATI_INDIFFERENCIE）、标志性建筑（BATI_REMARQUABLE）与工业建筑（BATI_INDUSTRIEL）三个子类别。其生成流程为：先为每一栋建筑创建50米缓冲区，随后对该缓冲区结果进行40米的侵蚀操作。最终得到的城市斑块并不对应该区域内任意给定时间点的建筑精准现状。