一种基于POI大数据的城市核心区识别方法
康翔,潘剑君,朱燕香,白浩然,卢晓丽

A Method for Identifying the Urban Nuclei based on POI Big Data
Xiang Kang,Jianjun Pan,Yanxiang Zhu,Haoran Bai,Xiaoli Lu
图6 城市核心区等值线
Fig.6 Counter line of urban nuclei