Map Viewing Service (WMS) of the dataset: Urban units according to INSEE in 1999 in Corrèze

N_URBAINE_UNITE_1999_ZSUP_019 The concept of urban unity is based on the continuity of the building and the number of inhabitants. An urban unit is a municipality or group of municipalities with a continuous building area (no cut-off of more than 200 metres between two buildings) with at least 2,000 inhabitants. If the urban unit is located in a single municipality, it is referred to as an isolated city. If the urban unit extends over several municipalities, and each of these municipalities concentrates more than half of its population in the continuous built-up area, it is referred to as a multi-communal agglomeration.N_URBAINE_UNITE_1999_ZSUP_019 城市连片区域（urban unity）的概念以建筑连续性与居住人口规模为核心判定依据。城市单元（urban unit）指满足以下条件的单个市镇或多个市镇的组合：拥有连片建成区，即任意两栋建筑之间的间隙不超过200米，且居住人口不少于2000人。若该城市单元仅覆盖单个市镇，则称其为孤立城市；若该城市单元跨越多个市镇，且每个相关市镇均有超过半数的人口集聚于该连片建成区内，则称其为多市镇集聚群（multi-communal agglomeration）。