Simple download service (Atom) of the dataset: Perimestal of the attractions of cities in France 2020

The catchment area of a city is a group of municipalities, of a single enclave and enclave, which defines the extent of the influence of a cluster of population and employment on the surrounding municipalities, this influence being measured by the intensity of commuting to work. Urban area zoning follows the zoning into urban areas in 2010. An area consists of a pole and a crown. The poles are determined mainly on the basis of density and total population criteria, using a methodology consistent with that of the municipal density grid. A threshold of jobs is added in order to prevent essentially residential municipalities with few jobs from being considered poles. Within the pole, the most populous commune is called the center commune. If a pole sends at least 15 % of its assets to work in another pole of the same level, the two poles are associated and together form the heart of a catchment area. Municipalities that send at least 15 % of their assets to work in the pole are the crown of the area. https://www.insee.fr/fr/information/4803954城市通勤吸引区（catchment area）是由若干市镇（commune）构成的集合体，涵盖单一飞地及关联飞地，其界定了人口与就业集群对周边市镇的影响范围，该影响以通勤上班的强度作为衡量指标。 城市区域分区遵循2010年版城市区域划分标准。 单个通勤吸引区由核心极（pole）和外围圈层（crown）两部分组成。 核心极的划定主要以人口密度和总人口规模为判定标准，所采用的方法与市镇密度网格的划定方法保持一致。此外增设就业门槛，以避免仅具备居住功能、就业岗位极少的市镇被误划为核心极。 在单个核心极范围内，人口最多的市镇被称为中心市镇（center commune）。若某一核心极至少有15%的就业通勤流向另一同级核心极，则两个核心极将被关联，共同构成一个通勤吸引区的核心区域。 若某市镇至少有15%的就业通勤流向该核心极，则该市镇将被划入该通勤吸引区的外围圈层。 https://www.insee.fr/fr/information/4803954