基于兴趣点的北京市住宅生活便利度指数研究

Research on Beijing Residential Convenience Index Based on Point of Interest

住宅的生活便利度指数指住宅居民在一定范围内可利用的设施种类与数量,是城市宜居度的重要指标.兴趣点(point of interest, POI)数据是一组包含物理实体属性的地理坐标点,具有数据种类详尽、粒度精细、范围广和时效性强的优点.基于高德POI数据,对北京市城区住宅的生活便利度指数进行研究,提出面向地铁出行的各向异性距离度量方法,根据构建的生活便利度指数指标体系将住宅分为优质、良好、中等和待改进4个等级.各等级住宅在城区中的空间分布结果表明,考虑地铁出行后,对住宅的生活便利度指数度量更为合理.

Residential convenience index refers to the types and number of facilities available to residential residents within a certain range,which is a significant indicator for urban livability.Point of interest(POI)data is a set of geographic coordinate points containing physical entity attributes.It has the advantages of detailed data types,fine granularity,wide range and strong timeliness.Based on the POI data of Amap,the residential convenience index of buildings in Beijing’s urban areas is studied,and an anisotropic distance measurement method for subway travel is proposed.According to the constructed index system of living convenience index,houses are divided into excellent,good,moderate and poor levels.The results of the spatial distribution of various levels of residences in the urban area show that after taking subway trips into account,the convenience index measures of all levels of dwellings are more reasonable.