Modelling of urbanisation (urban stains), situation in 1950 in Franche-Comté

Urban stain modelling in Franche-Comté since 1950. The Urbanisation Dynamics — Urban Taches tool offers a modeling of urbanised spaces over time. Urban spots were generated by the application of the following model: expansion distance of + 50 m around the buildings then erosion of -40 m. The dynamic map depicts urban spots according to the building years. Urban spots have been visualised in 10 years since 1950. Urban spot objects were generated from the buildings of the IGN databases (BDParcellaire and BDTopo). The “year of construction” information of the buildings comes from the DGFiP land database (MAJIC files) as of 1 January 2011. This source is not exhaustive. Buildings whose year of construction is unknown have generated “undated” urban spots (mainly for buildings for agricultural and industrial use). The file “Tache_urbane_NC_R43.TAB” contains GIS data for “undated” urban spots. Please note: the public domain is not listed in the MAJIC database. Population data have been downloaded from the INSEE website.1950年以来弗朗什-孔泰（Franche-Comté）地区城市斑块建模。 本数据集依托「城市化动态——城市斑块工具（Urbanisation Dynamics — Urban Taches）」实现随时间演进的城市化空间建模。城市斑块通过以下模型生成：以建筑为中心向外扩张50米，随后向内侵蚀40米。 该动态地图依据建筑建造年份呈现城市斑块，自1950年起以每10年为一个时间粒度进行可视化展示。 城市斑块对象源自法国国家地理研究所（Institut Géographique National，IGN）数据库（BDParcellaire与BDTopo）中的建筑数据。 建筑的「建造年份」信息源自法国公共财政总局（Direction Générale des Finances Publiques，DGFiP）截至2011年1月1日的土地数据库（MAJIC文件），该数据来源并非全覆盖。 建造年份未知的建筑将生成「无日期」城市斑块（主要为农业与工业用建筑）。文件「Tache_urbane_NC_R43.TAB」包含地理信息系统（GIS，Geographic Information System）数据，对应「无日期」城市斑块。 请注意：公共领域建筑未被纳入MAJIC数据库。 人口数据源自法国国家统计与经济研究所（Institut National de la Statistique et des Études Économiques，INSEE）官方网站。